Vokera PINNACLE High Efficiency System Boiler User Manual

PINNACLE High Efficiency System Boiler

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Specifications

• Product: PINNACLE High efficiency system boiler
• Dimensions:
  • Height: 740 mm
  • Width: 420 mm
  • Depth: 275 mm
• Clearances Required:
  • Above: 25mm*
  • Below: 200mm^
  • Left Side: 5mm
  • Right Side: 5mm**
  • Front: 4mm***

Product Usage Instructions

1. Things You Should Know

• Gas Appliances: Ensure installation and
  maintenance are done by a competent person and in accordance with
  regulations.

• Electrical Supply: Connect to a double pole
  isolator with a 3 AMP fuse. Must be earthed.

• Warranty Registration: Register warranty on
  Vokera websites.

2. Getting Started

2.1 Before Switching On

Familiarize yourself with isolating the appliance from gas,
water, and electricity pressure, external thermostats, and
appliance controls.

2.2 Appliance Controls

Refer to page 2 for details on appliance controls.

2.3 Lighting the Boiler

Ensure gas and electrical supply are on. Follow commissioning
preparation steps to start the boiler.

2.4 Start Screen

After connecting to electrical supply, set time and date. The
boiler will enter ‘pre-purge’ mode. Press the center of the display
to activate desired selection (OFF, WINTER).

FAQ

Q: How do I register the warranty for the appliance?

A: You can register the warranty on the Vokera websites by
following the instructions provided and having your appliance
warranty card ready.

Q: What should I do if I need to dispose of the product?

A: Do not dispose of the product as solid urban waste. Instead,
hand it over to a differentiated waste collection centre for proper
disposal.

“`

PINNACLE
High efficiency system boiler
Users Instructions Installation & Servicing Instructions
PINNACLE 20S NG G.C. N° 47-364-25 PINNACLE 25S NG G.C. N° 47-364-26 PINNACLE 32S NG G.C. N° 47-364-27
THESE INSTRUCTIONS TO BE RETAINED BY USER
Vokèra is a licensed member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the UK.

1. THINGS YOU SHOULD KNOW…………………………………………… 3 2. GETTING STARTED………………………………………………………….. 3 3. CONTROL PANEL…………………………………………………………….. 4 4. HOW TO…………………………………………………………………………… 8 5. WHAT IF…………………………………………………………………………… 8 SECTION 1 – DESIGN PRINCIPLES AND OPERATING SEQUENCE ……………………………………………………………………….. 10 SECTION 2 – TECHNICAL DATA ………………………………………….. 11 SECTION 3 – GENERAL REQUIREMENTS (UK) ……………………. 14 SECTION 3A – GENERAL REQUIREMENTS (EIRE)……………….. 16
SECTION 4 – INSTALLATION ………………………………………………. 17
SECTION 5 – COMMISSIONING & OPERATION…………………….. 23

SECTION 6 – MAINTENANCE AND CLEANING …………………….. 30 SECTION 7 – PASSWORD SETTING FOR ACCESSING AND CHANGING PARAMETERS IN THE TECHNICAL MENU ……. 32 SECTION 8 – USER INSTRUCTIONS ……………………………………. 36 SECTION 9 – GUIDED TOUR ……………………………………………….. 39 SECTION 10 – SERVICING INSTRUCTIONS …………………………….. 40 SECTION 11 – CHECKS, ADJUSTMENTS AND FAULT FINDING .. 41 SECTION 12 – LPG INSTRUCTIONS …………………………………….. 44 Commissioning checklist …………………………………………………… 45
Benchmark …………………………………………………………………….46-49

USERS INSTRUCTIONS
INTRODUCTION
Dear Customer Your Vokèra PINNACLE boiler has been designed to meet and exceed the very latest standards in gas central heating technology, and if cared for, will give years of reliable use and efficiency. Please therefore take some time to read these instructions carefully. Do’s and Don’t’s – Do ensure that the system pressure is periodically checked – Do ensure that the boiler should not be used by children or unassisted disabled people – Do ensure that you know how to isolate the appliance in an emergency – Do ensure that you are familiar with the appliance controls – Do ensure that your installer has completed the appliance log book section – Do not attempt to remove the appliance casing or gain internal access – Do not hang clothes etc. over the appliance – Do not forget to have the appliance serviced annually.
This booklet is an integral part of the appliance. It is therefore necessary to ensure that the booklet is handed to the person responsible for the property in which the appliance is located/installed. A replacement copy can be obtained from the Vokera website
For the warranty terms and conditions please refer to www.vokera.co.uk (UK) or www.vokera.ie (ROI).
At the end of its life, the product should be not be disposed of as solid urban waste, but rather it should be handed over to a differentiated waste collection centre.

2

1. THINGS YOU SHOULD KNOW

1.1 GAS APPLIANCES
Gas Safety (Installation and Use) Regulation (UK). In the interests of your safety and that of others it is a legal requirement that all gas appliances are installed and correctly maintained by a competent person and in accordance with the latest regulations.
1.2 ELECTRICAL SUPPLY
Please ensure that this appliance has been properly connected to the electrical supply by means of a double pole isolator, and that the correct size of fuse (3 AMP) has been fitted. Warning: this appliance must be earthed!
1.3 WARRANTY REGISTRATION
Please take the time to register the appliance warranty which can be done via the Vokera websites – Vokera.co.uk (UK) & Vokera.ie (Ireland) (please have your appliance warranty card to hand).
1.4 APPLIANCE COMMISSIONING
CHECKLIST (UK only)
The Benchmark checklist section can be found at the rear of the appliance installation booklet. This important document must be completed during the installation/commissioning of your boiler. All GAS SAFE registered installers carry a GAS SAFE ID card, and have a registration number. These details should be recorded in the Benchmark commissioning checklist section within the installation booklet. You can check your installers details by calling GAS SAFE direct on 08004085500. Failure to install and commission the appliance in accordance with the manufacturers instructions will invalidate the warranty. This does not affect your statutory rights.
1.5 HOW DOES IT WORK?
Your PINNACLE boiler supplies heated water to your radiators and hot water cylinder. The central heating is controlled via a time clock and any thermostats that your installer may have fitted. The boiler will light when it receives a request from the time clock via any thermostat that may be installed. Your PINNACLE boiler lights electronically and does not have a pilot light. In the unlikely event of a fault developing with your boiler, the supply of gas to the burner will be terminated automatically.

150 25
200

1.6 DIMENSIONS
HEIGHT 20S-25S-32S 740 mm

WIDTH 420 mm

DEPTH 275 mm

1.7 CLEARANCES REQUIRED

ABOVE BELOW LEFT SIDE RIGHT SIDE FRONT

25mm 200mm^ 5mm 5mm 4mm

• 25mm above flue bend

5

5

if top flue outlet is used. Consideration should

be given to providing

reasonable clearance

for the insertion of a FGA

probe.

** Disconnection

of

adjacent components

may be required in

order to facilitate syphon

removal.

*** Provided that a door or

removal panel enables

420mm access for

maintenance.

^ Can be reduced to

5mm if a removal panel

enables 200mm for

maintenance.

2. GETTING STARTED
2.1 BEFORE SWITCHING ON
Before switching the appliance on, please familiarise yourself with: – how to isolate the appliance from the gas, water, and electricity
supplies; – how to check and top-up ­ if necessary ­ the system water
pressure; – any external thermostats and their functions; – the appliance controls.
2.2 APPLIANCE CONTROLS (see page 2)
NOTE: the appliance frost protection is active in all the boiler modes. The control panel functions can be used to vary the temperature of the water that circulates around your radiators and the water that flows from your hot water cylinder. The heating temperature range can be adjusted between 20C – 40C (low temperature) or 40C – 80C (high temperature) this range is configured by your installer and the default is the high temperature range. Refer to the main appliance status table for fault indicator and boiler status.

2.3 LIGHTING THE BOILER
Ensure the gas and electrical supply to the boiler are turned on. After completing all operations required to prepare commissioning, proceed as follows to start the boiler.
2.4 START SCREEN
When the appliance is first connected to the electrical supply, the UI may require you to set the time and date (see page 4), and the appliance will enter its pre-purge’ mode that will last for several minutes. On completion of thepre-purge’ phase, the appliance will enter its `standby’ mode unless a heating request has been made. By pressing in the centre of the display it is possible to activate the desired selection (OFF, WINTER).
2.5 HOW TO RESET THE APPLIANCE
Reset function In order to reset the boiler’s operation in the event of a fault, refer to the adjacent pages for information on the meaning of the various alarm or fault codes; and how to carry out a reset.

3

3. CONTROL PANEL
The PINNACLE touchscreen display allows the user to interact quickly and easily with the interface, which, depending on the level of use, is presented with graphic symbols or descriptive text. When the display is not being used, the stand-by screen is shown, simply press in the centre of the display to activate the operating mode.
Key : allows a reset of an ongoing fault.

Key : ENABLE/DISABLE winter operation.

The touchscreen has colours that help the user take even more advantage of the SMART features of our interface:

grey

white

green

red

orange

The colour ‘grey’ is The colour ‘white’ is Indicates correct oper- When associated with the Indicates the presence

usually associated with usually associated with ation of the appliance. a parameter or function a parameter or function

symbol it indicates the of a transient fault.

that cannot be changed. that can be changed.

presence of a fault that sends

the boiler into a lockout con-

ditions.

EXAMPLE: WINTER SCREEN – EXAMPLES OF COLORS ON TOUCH SCREEN

12 39
Gio

1.2 bar

1.2
bar WHITE

45 52 12 1.2 bar

°C

°C

39

.5

.5

45 52 14

°C

°C

JUL

.5

.5

Heating

Hot water

GREY

GIO 14 LUG

12°C

42.5 °C

49.5 °C

12°C

42.5°C

49.5°C

Heating

Domestic Hot Water

RED
b Some icons may be active depending on which set-

tings are currently active.

12 Time and date

1.2

39

bar

Gio 14 Automatically sets
JUL Modify time 12:39

Modify date 30 Settembre 2022

12°C

SETTINGS MENU

12 Menu

1.2

39

bar

Gio 14

Domestic water 52°C

JUL Heating circuit

45°C

Boiler mode Winter

System info
12°C

12 Menu

1.2

39 Comfort functions

bar

Gio 14 JUL

Preheat
Biberon Off

Guided tour On/active

Hourly scheduling
12°C On

12 Menu

1.2

39 Time and date

bar

Gio 12:39 thu 14 jul

14

JUL Screen lock

Off

Buzzer On/active

12°C

Language English

12 Menu

1.2

39 Technical menu

bar

Gio Blocked

14

JUL

TIME & DATE

FAULT RESET

SCREEN

12 39

1.2
bar

Gio

14

JUL

12 39

1.2 bar

1.2
bar

E010 Maximum number of
ignition attempts

Gio

45 14

°C

JUL

.5

Heating

52 °C .5
Hot water

12°C
COMFORT

12 39 Comfort functions

1.2
bar

12°C

42.5°C

49.5°C

FUNCTIONS

Gio 14 Comfort functions JUL

Preheat

SETTINGS HEATING DELIVERY
TEMPERATURE

12 Temperature heating

1.2

39 circuit

bar

Gio

14

JUL

45 °C .5

SETTINGS

12°C

DHW

TEMPERATURE

12 DHW temperature

1.2

39

bar

Gio

14

JUL

52 °C .5

Smart preheating Touch&go

12°C

OK

12°C

OK

MENU GESTIONE PRESSIONE PRESSURE MANAGEMENT MENU

12 Boiler pressure

1.2

39

bar

Gio

1.2 bar

14

JUL

1.0

1.5

The boiler pressure is correct

12 Boiler pressure

1.2

39

bar

Gio

0.7 bar

14

JUL

1.0

1.5

The system is not working optimally, proceed to automatic filling?

PRESSURE MANAGEMENT

12 39

Boiler pressure

1.2
bar

Gio

0.2 bar

14

JUL

1.0

1.5

The system is not working optimally, proceed to automatic filling?

12°C

12°C

OK

12°C

OK

12°C

12 39

Boiler pressure

1.2
bar

12 39

Boiler pressure

1.2
bar

Gio

0.7 bar

14

Gio 14

0.2 bar

JUL

1.0

1.5

JUL

1.0

1.5

Automatic system filling in progress…

Automatic system filling in progress…

12°C

12°C

4

USER MENU

12 Menu

1.2

39

bar

Gio 14

Domestic water 52°C

JUL Heating circuit

45°C

Boiler mode Winter

System info
12°C

12 Menu

1.2

39 Comfort functions

bar

Gio Preheat

14 JUL

Biberon Off

Guided tour On/active

Hourly scheduling
12°C On

12 Menu

1.2

39 Time and date

bar

Gio 12:39 thu 14 jul

14

JUL Screen lock

Off

Buzzer On/active

12°C

Language English

12 Menu

1.2

39 Technical menu

bar

Gio Blocked

14

JUL

12°C

TECHNICAL MENU

12 Security password

1.2

39

bar

Gio 14
JUL 0 0 0 0

12°C

OK

12 Service menu

39
Gio

Chimney sweep

14

Ipd

JUL

Alarm history

Call service

Call service

12°C

High efficiency enable Not active

Contact service

12 Technical menu 39
Gio Guided tour 14 JUL Combustion
Configuration
Heating
12°C
Dhw
12 Technical menu 39
Gio Service 14 JUL Connectivity
12°C

1.2
bar

12 Connectivity

39
Gio Bus 485 config 14 Wi-Fi key

JUL Ot config

1.2

Activate

bar

12°C

1.2
bar
1.2
bar

12 Combustion

39

Gio 14

Gas – gas type Methane

JUL D52 – p1 GAS VALVE

45

Gac

Apl – power
12°C 25 kW

1.2
bar

12 39

Configuration

Gio Hydraulic configuration 14 Inst flowmeter

JUL Min rpm 1000 RPM

Max rpm 7900 RPM

12°C

Max ch rpm 6300 RPM

12 39

Configuration

Gio Range rated 14 6300 RPM JUL Config aux 1
Not set

Exhaust probe reset

12°C

12 39
Gio 14 JUL
12°C

Configuration
Hydraulic configuration Inst flowmeter Water pressure transducer Water transducer Auto-fill enable Not active Air purging cycle

12 39
Gio 14 JUL
12°C

Configuration
Min rpm 1000 RPM Max rpm 7900RPM Max ch rpm 6300 RPM Range rated 6300 RPM

12 39

Configuration

Gio Config aux 1 14 Not set

JUL Exhaust probe reset

12°C

1.2

12 Heating

bar

39 Pump control type

Gio 85

14

Ot cascade control

JUL Activate

Screed function

Anti cycle function

12°C 3Min
Reset ch timers Activate

1.2

12 Heating

bar

39 Type of heating

Gio High temperature

14

Max temp

JUL 80.5°C

Min temp 40°C

Thermoregulation

12°C Activate
Hourly scheduling Activate

1.2

12 Heating

bar

39 Hyst on high temp

Gio 5°C

14

Hyst off high temp

JUL 5°C

Hyst on low temp 3°C

Hyst off low temp

12°C 3°C
Pump control type 85

1.2

12 Heating

bar

39 Ot cascade control

Gio Activate

14

Screed function

JUL

Anti cycle function 3Min

Reset ch timers

12°C Activate
Type of heating High temperature

1.2

12 Heating

bar

39 Max temp

Gio 80.5°C

14

Min temp

JUL 40°C

Thermoregulation Activate

Hourly scheduling

12°C Activate

1.2 12 Dhw

1.2

bar

39

bar

Gio 14

Anti legionella function Not active

JUL Tank hysteresis on

5°C

Tank hysteresis off

5°C

Tank flow temp
12°C 80°C

1.2 12 Dhw

1.2

bar

39

bar

Gio Min temp

14

37°C

JUL Max temp

60°C

Special functions

None

12°C

1.2 12 Dhw

1.2

bar

39

bar

Gio Anti legionella function

14

Not active

JUL Tank hysteresis on

5°C

Tank hysteresis off

5°C

Tank flow temp
12°C 80°C

1.2 12 Dhw

1.2

bar

39

bar

Gio Min temp

14

37°C

JUL Max temp

60°C

Special functions

None

Post circulation

12°C Not active

1.2
bar

5

3.1 Signalling and faults
GREEN
DISPLAY WITH REGULAR OPERATION

ORANGE

RED

DISPLAY WITH

A FAULT

PRESENT

12

1.2 12

1.2

39

bar

39

bar

Gio 14 JUL
E077
Absence of communication with low temperature thermostat

Gio
14
JUL E011
Parasitic flame

12°C

12°C

The presence of a fault is indicated with two different colours: – orange: indicates that a self-resetting transient error is present
which could limit the correct operation of the boiler

– red (together with the symbol ) indicates the presence of an error which will put the boiler into a lockout condition.

Reset function To restore operation of the boiler in the event of a fault, press

. At this point, if the correct operating conditions have been

restored, the boiler will restart automatically. A maximum of 5

consecutive unlocking attempts can be made from the inter-

face, after which the interface displays

12

1.2

39

bar

Gio
14
JUL
E099 reset attempts exhausted

12°C

In this case, the boiler must be disconnected from the electric-
ity supply and then reconnected again, to reactivate operation.
b If the attempts to reset the boiler do not work, contact the
Technical Assistance Centre.

PRESSURE fault When the pressure value falls below 0.5 bar, the following situations can occur:

warning signal FIL

12

0.5

39

bar

Gio

FIL

14

JUL

FIL LOW WATER PRESSURE

CHECK THE HTG SYSTEM

12 °C

The boiler is operating normally, but it is still recommended to fill
the system in the following way:
– attach the temporary flexi-pipe and open both filling taps A&B – close the filling valve, access the Info menu (section 7.2, item
I018) to check that the pressure value reaches 1-1.5 bar
– close both A&B taps and remove the flexi-pipe (see also “4.1 HOW TO TOP-UP THE SYSTEM PRESSURE” page 8).

temporary fault – E041

12

0.2

39

bar

Gio

14

JUL
E041

Low water pressure

12°C

The boiler is not working properly. Fill the system as described in the previous point; operation required within 10 minutes of the message appearing otherwise the anomaly becomes definitive (E040).

definitive fault – E040

12

0.2

39

bar

Gio 14 JUL
E040

Low water pressure

12°C

In the event of a permanent lockout, fill the system and then release the alarm.

Press to restore operation.
Once operation is restored, the boiler performs an automatic vent cycle.
b If the drop in pressure is very frequent, request the inter-
vention of the Technical Assistance Centre.

DHW PROBE fault (E060)
Indicates a possible configuration error; please contact Vokera Technical or the Service Centre for assistance.

PRIMARY HEAT-EXCHANGER CLEANING fault (E091) The boiler has an auto-diagnostic system which, based on the total number of hours in certain operating conditions, can signal the need to clean the primary heat exchanger. Once the cleaning operation has been completed with the cleaning kit supplied as an accessory, it is necessary to reset the total hours meter as follows:

12 39

Configuration

Gio Config aux 1 14 Not set

JUL Exhaust probe reset

1.2 12 Exhaust probe reset

1.2

bar 39

bar

Gio
14
JUL Proceed with reset of the hour counter of the flue gas probe?

12°C

12°C

OK

NOTE: The meter resetting procedure should be carried out after each in-depth cleaning of the primary exchanger or if this latter is replaced.

The fault occurs when the hour meter exceeds 2500 hours; this value can be verified as follows: access the “System Info” menu to display the value of the flue
gas probe meter (display/100, example 2500h = 25).

12 System info

39
Gio

Screed heating hours

14 JUL

Flow probe

Return probe

1.2
bar 0 21°C 22°C

Dhw probe

20°C

12°C Dhw set
Exhaust probe

44°C 33°C

6

ERROR CODE E010 E011 E012 E013 E014 E015 E020 E021 E030 E031 E032 E033 E034 E035 E036 E037 E038 E039 E040 E042 E071 E075 E081 E088 E090 E092 E093 E094 E097 E098 E099 E041 E050 E051 E052 E055 E056 E060 E070 E071 E072 E077 E080 E081 E082 E090 E091 E095 E096 FIL
pressure value
COM
E065
FWER
CFS SFS
OBCD
LLL CFG

ERROR MESSAGE MAXIMUM NUMBER OF IGNITION ATTEMPTS
PARASITIC FLAME MAXIMUM NUMBER OF FLAME LOSSES
SERIAL PROTOCOL FLAME DETECT TEST FAILED VOLTAGE DETECT FLAME TEST FAILED
LIMIT THERMOSTAT GAS VALVE CONTROL MALFUNCTION
FAN ERROR FAN FAILURE MECHANICAL BLOCKAGE
ROTOR FAN FAILURE BLOCKED ROTOR FAN FAILURE DAMAGED CHIMNEY OBSTRUCTION IN PREVENTILATION BLOCKAGE OBSTRUCTION FLUE GAS LOW POWER BLOCKAGE OBSTRUCTION FLUE GAS HIGH POWER FAILED COMBUSTION CHECK LOW POWER COMBUSTION CHECK FAILED HIGH POWER
ABNORMAL FLAME VALUE LOW WATER PRESSURE WATER TRANSDUCER – LWCO ERROR HEATING TEMPERATURE OVER LIMIT VALVE OPENING LIMIT REACHED RETURN TEMPERATURE OVER LIMIT
CAC FAILED EXHAUST PROBE ERROR
CALIBRATION FAILED TOO MANY CALIBRATION ATTEMPTS
LAMBDA OVER LIMIT Check FAILED GAC FAILED
RESET ATTEMPTS EXHAUSTED LOW WATER PRESSURE
SMOKE OBSTRUCTION ERROR LOW POWER SMOKE OBSTRUCTION ERROR HIGH POWER
HARDWARE ERROR OUT OF THRESHOLD NO CARD FAN COMMUNICATION
NO COMMUNICATION MICROPROCESSOR CARD CONFIGURATION ERROR CH PROBE ERROR
HEATING TEMPERATURE OVER LIMIT DELTA T RETURN OUT OF LIMIT
ABSENCE OF COMMUNICATION WITH LOW TEMPERATURE THERMOSTAT RETURN PROBE ERROR
RETURN TEMPERATURE OVER LIMIT WARNING DELTA TEMPERATURE EXHAUST PROBE ERROR CLEAN PRIMARY HT EXCHANGER CALIBRATION FAILED LAMBDA OVER LIMIT
LOW WATER PRESSURE CHECK THE HTG SYSTEM HIGH WATER PRESSURE CHECK THE HTG SYSTEM
APPLIANCE PCB COMMUNICATION LOST (more than 30 seconds)
IMOD ERROR
WARNING FIRMWARE VERSIONS NOT COMPATIBLE
CALL FOR SERVICE STOP FOR SERVICE
ON BOARD CLOCK DAMAGED
GENERIC FIRMWARE BLOCK GAC NOT EXECUTED

ERROR TYPE DESCRIPTION
DEFINITIVE
TRANSITORY
SIGNAL SIGNAL: (the boiler continues to operate
but with no display or keys) SIGNAL
SIGNAL: (the boiler continues to operate but with no display or keys) SIGNAL DEFINITIVE
SIGNAL: (the boiler continues to operate but with no display or keys) SIGNAL SIGNAL

7

4. HOW TO…

5. WHAT IF…

4.1 HOW TO TOP-UP THE SYSTEM
PRESSURE
The system pressure must be checked periodically to ensure the correct operation of the boiler. The system pressure is shown at the top of the LCD display or can be read on the gauge located on the underside of the appliance. When the boiler is at room temperature, the system pressure should be approximately 1.0 bar. If the pressure requires `topping-up’ use the following instructions as a guide. – Locate the filling valve connections (usually beneath the
boiler, see fig. 1). – Attach the filling loop to both connections. – Open the filling valve slowly until you hear water entering the
system. – Close the filling valve when the pressure gauge (on the boiler)
reads between 1 and 1.5 BAR. – Remove the filling loop from the connections.

control valve (A)

Fig.1

temporary connection

control valve (B)

flow/return pipe

double check valve supply pipe

4.2 HOW TO CARE FOR THE APPLIANCE
To clean the outer casing use only a clean damp cloth. Do not use any scourers or abrasive cleaners.

5.1 WHAT IF I SUSPECT A GAS LEAK
If you suspect a gas leak, turn off the gas supply at the gas meter and contact your installer or local gas supplier. If you require further advice please contact your nearest Vokèra office.
5.2 WHAT IF I HAVE FREQUENTLY TO TOPUP THE SYSTEM
If the system regularly requires topping-up, it may be indicative of a leak. Please contact your installer and ask him to inspect the system.
5.3 WHAT IF THE APPLIANCE IS DUE ITS ANNUAL SERVICE
Advice for tenants only Your landlord should arrange for servicing. Advice for homeowners Please contact Vokèra Customer Service (0330 236 8630 (UK) or 056 7755055 (ROI) if you would prefer a Vokèra service engineer or agent to service your appliance. Alternatively your local GAS SAFE registered engineer may be able to service the appliance for you.
5.4 WHAT IF I NEED TO CALL AN ENGINEER
If you think your boiler may have developed a fault, please contact your installer or Vokèra Customer Services (0330 236 8630 (UK) or 056 7755055 (ROI) have all your details to hand including full address and postcode, relevant contact numbers, and your appliance log book. It is a requirement of your warranty terms & conditions that your Benchmark logbook has been filled out correctly and is fully up to date.

8

INSTALLATION AND SERVICING INSTRUCTIONS

INTRODUCTION
All installers are asked to follow the Benchmark Scheme by adhering to the Code of Practise, details of which can be obtained from www.benchmark.org.uk.
The PINNACLE has a ACC (Active Combustion Control) system. This control system ensures functionality, efficiency and low emissions under any conditions. The ACC system uses an ionisation sensor immersed in the burner flame, whose information allows the control board to operate the gas valve that regulates the fuel. This sophisticated control system provides the auto-regulation of the combustion, so there is no need for an initial calibration. The ACC system is able to adapt the boiler to operate with different gas compositions, different outlet pipes lengths and different altitudes (within the specified design limits). The ACC system can also perform an auto-diagnostic operation that locks out the burner before the permitted upper emission limit is exceeded. The PINNACLE product family comprises a range of highefficiency system boilers. These appliances ­ by design ­ incorporate electronic ignition, circulating pump, expansion vessel, safety valve, pressure gauge and automatic by-pass. The range is produced as room sealed, category II2H3PII2HY203P appliances, suitable for internal wall mounting applications only. Each appliance is provided with a fan powered flue outlet with an annular co-axial combustion air intake that can be rotated ­ horizontally ­ through 360 degrees for various horizontal or vertical applications.
b Before connecting the “Hi, Comfort T300 or K100″ de-
vices, the Connectivity Menu must be set up correctly to avoid communication failure problems (see section section 8.10).

These appliances are designed for use with a sealed system only; consequently they are not intended for use on open vented systems.
The boiler is suitable for use with combustible gases group H and/or group E and natural gas mixtures and hydrogen up to 20% by volume.
This booklet is an integral part of the appliance. It is therefore necessary to ensure that the booklet is handed to the person responsible for the property in which the appliance is located/ installed. A replacement copy can be downloaded from the Vokèra website – www.vokera.co.uk.
The boiler complies with basic requirements of the following Directives: – Regulation (EU) 2016/426; – Yield directive: Article 7(2) and Annex III of directive 92/42/
EEC; – Electromagnetic compatibility directive 2014/30/EU; – Low-voltage directive 2014/35/EU; – Directive 2009/125/EC Ecodesign for energy-using
appliances; – Regulation (EU) 2017/1369 Energy labeling; – Delegated Regulation (EU) No. 811/2013; – Delegated Regulation (EU) No. 813/2013; – Regulation UNI/TS 11854.
At the end of its life, the product should be not be disposed of as solid urban waste, but rather it should be handed over to a differentiated waste collection and/or recycling centre.

Fig.2

F

G

R

General layout
1 Safety valve 2 Pressure transducer 3 Siphon 4 Fan 5 Air filter 6 Mixer 7 NTC delivery probe 8 Limit thermostat 9 Flame detection electrode/ionisation sensor 10 Burner 11 Combustion analysis socket plug 12 Flue gas exhaust 13 Flue gas probe 14 Flame ignition electrode 15 Exchanger 16 Expansion vessel 17 NTC return probe 18 Degassing pipe 19 Gas valve 20 Air vent valve 21 Circulator 22 Drain tap 23 Hydrometer
R Heating return connection
F Heating flow connection G Gas connection

9

1. SECTION – DESIGN PRINCIPLES AND OPERATING SEQUENCE

1.1 PRINCIPLE COMPONENTS
· A fully integrated electronic control board featuring electronic temperature control, anti-cycle control, pump over-run, selfdiagnostic fault indicator, full air/gas modulation
· Stainless-steel heat exchanger · Electronic ignition with flame supervision · Integral high-head pump · Fan · Expansion vessel · Flue sensor · Pressure transducer · Safety valve
1.2 MODE OF OPERATION (AT REST)
When the appliance is at rest and there are no requests for heating or hot water, the following functions are active: · frost-protection system: the frost-protection system protects
the appliance against the risk of frost damage, if the main temperature falls to 5°C, the appliance will function on minimum power until the temperature on main reaches 35°C. · anti-block function: the anti-block function enables the pump to be energised for short periods, when the appliance has been inactive for more than 24-hours.
1.3 MODE OF OPERATION (HEATING AND/
OR HOT WATER)
When there is a request for heat via the onboard clock and/ or any external control, the pump and fan are started, the fan speed will modulate until the correct signal voltage is received at the control PCB. At this point an ignition sequence is enabled. Ignition is sensed by the electronic circuit to ensure flame stability at the burner. Once successful ignition has been achieved, the electronic circuitry increases the gas rate to 75% for a period of 15 minutes. Thereafter, the boiler’s output will either be increase to maximum or modulate to suit the set requirement. When the appliance reaches the desired temperature the burner will shut down and the boiler will perform a three-minute anti-cycle (timer delay). When the request for heat has been satisfied the appliance pump and fan may continue to operate to dissipate any residual heat within the appliance.

1.4 SAFETY DEVICES
When the appliance is in use, safe operation is ensured by: · a pressure transducer that monitors system water pressure
and will de-activate the pump, fan, and burner should the system water pressure drop below the required minimum value; · fan speed sensor to ensure safe operation of the burner; · a high limit thermostat that over-rides the temperature control circuit to prevent or interrupt the operation of the burner; · flame sensor that will shut down the burner when no flame signal is detected and/or when incomplete combustion or high emissions are detected; · flue sensor that will shut down the burner if the flue threshold temperature is exceeded; · a safety valve which releases excess pressure from the primary circuit.
NOTE: when the appliance is first switched ON or when the electrical supply is interrupted then restored, the appliance will enter a short purge’ cycle whereby the pump cycles ON & OFF for approximately 2-minutes. Only when the purge’ cycle has been completed, will the appliance go through an ignition sequence.

45

6

7

2 1

8

9

12

3

10 11

F
1 Safety valve 2 Pressure transducer 3 Automatic by-pass 4 NTC delivery probe 5 Limit thermostat 6 Exchanger 7 NTC return probe 8 Air vent valve 9 Expansion vessel 10 Circulator 11 Drain tap 12 Hydrometer R Return connection F Flow connection

R Fig.3

10

2. SECTION – TECHNICAL DATA

2.1 CENTRAL HEATING

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Maximum heat input (kW)

20.00

25.00

32.00

Minimum heat input (kW)

1.90

2.70

2.70

Maximum heat output (kW) 60/80°C

19.53

24.42

31.19

Minimum heat output (kW) 60/80°C

1.77

2.57

2.57

Maximum heat output (kW) 30/50°C

21.31

26.51

33.70

Minimum heat output (kW) 30/50°C

1.96

2.84

2.84

Minimum working pressure

0.25÷0.45 bar

Maximum working pressure

3 bar

Minimum flow rate

450 l/h

2.2 GAS PRESSURES

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Inlet pressure (G20)

20.0 mbar

20.0 mbar

20.0 mbar

Heating maximum gas rate (m3/hr)

2.12

2.64

3.38

Minimum gas rate (m3/hr)

0.20

0.29

0.29

2.3 EXPANSION VESSEL

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Capacity

9 litres

Maximum system volume

74 litres

Pre-charge pressure

1 bar

2.4 DIMENSIONS

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Height (mm)

740

Width (mm)

420

Depth (mm)

275

Dry weight (kg)

28

28

29

2.5 CLEARANCES REQUIRED FOR MAINTENANCE

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Sides

5mm*

Top

150mm from casing or 25mm above flue elbow (whichever is applicable)

Bottom

200mm^

Front

420mm^^

• It may be necessary to remove adjacent components if component removal/replacement is required ** Consideration should be given to providing reasonable clearance for the insertion of a FGA probe. ^ This can be reduced to 4mm if a removal panel enables the required 200mm ^^ When installed in a cupboard, this dimension can be reduced to 4mm provided that the required 420mm is available when the door is opened/
  removed.

2.6 CONNECTIONS

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Flow & return

22mm

Gas

15mm

Safety valve

21mm

Condense

21mm

2.7 ELECTRICAL

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Power consumption CH (Watts)

79

80

104

Voltage (V/Hz)

230/50

Internal fuse

4 A T (for PCB) – 3.15A F (for connections block)

External fuse

3A

2.8 FLUE DETAILS (CONCENTRIC 60-100)

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Maximum horizontal flue length (60/100mm)

10.0 m

8.0 m

8.0 m

Maximum vertical flue length (60/100mm)

11.0 m

9.0 m

9.0 m

2.9 EFFICIENCY

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

SEDBUK 2005 (%)

90.2

90.2

90.1

2.10 EMISSIONS

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

CO2 @ maximum output (%) (*)

8.8

8.8

8.8

CO2 @ minimum output (%) (*)

8.8

8.8

8.8

CO @ maximum output (ppm)

230

200

240

CO @ minimum output (ppm)

15

15

15

NOx rating

class 6

class 6

class 6

(*) CO2 tolerance= +1% -1%

2.11 FAN ROTATIONS

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Maximum number of heating fan rotations (rpm)

6,300

6,200

7,700

Minimum number of heating fan rotations (rpm)

1,000

1,100

1,100

2.12 GAS PRESSURE

PINNACLE 20S

PINNACLE 25S

PINNACLE 32S

Nominal methane gas pressure (G20 – I2H)

20 mbar

20 mbar

20 mbar

Nominal methane-hydrogen gas pressure (G20.2 – I2Y20)

20 mbar

20 mbar

20 mbar

Nominal liquid gas LPG pressure (G31 – I3P)

37 mbar

37 mbar

37 mbar

11

Parameter

Symbol

20S

25S

32S

Unit

Seasonal space heating energy efficiency class

–

A

A

A

–

Water heating energy efficiency class

–

–

–

–

–

Rated heat output

Pnominal

20

24

31

kW

Seasonal space heating energy efficiency

s

94

94

94

%

Useful heat output

At rated heat output and high-temperature regime (*)

P4

19.5

24.4

31,2

kW

At 30% of rated heat output and low-temperature regime (**)

P1

6.6

8.2

10.5

kW

Useful efficiency

At rated heat output and high-temperature regime (*)

4

87.9

87.9

87.8

%

At 30% of rated heat output and low-temperature regime (**)

1

98.8

98.7

98.8

%

Auxiliary electricity consumption

At full load

elmax

30.0

31.1

54.9

W

At part load

elmin

12.2

13.3

13.6

W

In Stand-by mode

PSB

3.0

3.0

3.0

W

Other parameters

Stand-by heat loss

Pstby

30.0

35.0

35.0

W

Pilot flame energy consumption

Pign

–

–

–

W

Annual energy consumption

QHE

60

75

96

GJ

Sound power level, indoors

LWA

47

45

48

dB

Emissions of nitrogen oxides

NOx

22

20

35

mg/kWh

For combination heaters

Declared load profile

–

–

–

Water heating energy efficiency

wh

–

–

–

%

Daily electricity consumption

Qelec

–

–

–

kWh

Daily fuel consumption

Qfuel

–

–

–

kWh

Annual electricity consumption

AEC

–

–

–

kWh

Annual fuel consumption

AFC

–

–

–

GJ

(*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet

(**) Low temperature means for condensing boilers 30 °C, for low-temperature boilers 37 °C and for other heaters 50 °C return temperature (at heater inlet)

Description
Technical data for typical installations: Temperature of combustion products @ Nominal heat output (at 80/60° C) – [°C] Mass flow rate [kg/h] @ Nominal heat output [kW] Nominal heat output [kW] Overtemperature of the flue gases [°C] Temperature of the flue gases at minimum heat output [°C] Mass flow rate [kg/h] @ Minimum heat output [kW] Minimum heat output [kW] CO2 content @ Nominal heat output [%] CO2 at minimum heat output [%] Loss of minimum permitted pressure (in air feed and flue gas pipe) [Pa] Loss of maximum permitted pressure (in air supply and flue gas pipe) [Pa] Maximum permitted pressure difference between combustion air inlet and flue gas outlet (including wind pressure) [Pa] Maximum permitted combustion air temperature [°C] C9 Minimum useful diameter of the flue/vertical technical compartment for combustion air supply [mm]

20S
63 2.759 25.8
35.2 0.414 3.91 8.42 3.03 4.4 180
–
–

Boiler type PINNACLE S

25S 32S 20S 25S 32S 20S 25S 32S

C4

C6

C8

62.2 63.8 63.5 64.2 63.9 49.7 55.2 56.3

3.158 3.823 2.743 3.365 4.089 2.833 3.2618 3.944

30.15 35.67 25.55 30.96 38. 26.46 31.02 36.82

115

37 39.5 57 58.3 60.1 35.4 36.4 37.4

0.536 0.694 0.232 0.326 0.422 0.787 0.965 1.187

5.03 6.52 2.18 3.09 4 7.4 9.02 11.1

8.56 8.56 10.00 10.40 10.40 5.62 5.92 5.92

3.01 3.04 9.05 9.16 9.26 2.60 2.46 2.56

8.3 8.3 –

—

–

–

–

195 195 –

—

–

–

–

–

– 4.4 8.3 8.3 –

–

–

–

– 45 45 45 –

–

–

20S – 25S – 32S

240

Notes

C1: for the installation of the terminals on the wall and roof, refer to the specific instructions contained in the kits the terminals emerge from separate combustion and air supply circuits within a square area of 50 cm

C3: the terminals of the separate combustion and air supply circuits must lie within a square area of 50 cm, and the distance between the surfaces of the two holes must be less than 50 cm

C4: the boilers in this configuration, with the relative connection pipes, can be connected to only one natural draught stacke condensate flow inside the appliance is not permitted

C5: the terminals for combustion air supply and the evacuation of flue gases must not be installed on opposite walls of the building

C6: condensate flow inside the appliance is permitted maximum permitted recirculation rate of 10% in windy conditions
the terminals for combustion air supply and the evacuation of flue gases must not be installed on opposite walls of the building.

This type of configuration is not permitted in some countries; refer to the local regulations in force

C8: condensate flow inside the appliance is not permitted

12

Fig.4

Key Location
A Below an opening (window, air-brick, etc.) B Above an opening (window, air- brick, etc.) C To the side of an opening (window, air-brick, etc.) D Below gutter, drain-pipe, etc. E Below eaves F Below balcony, lowest point of carport roof, etc. G To the side of a soil/drain-pipe, etc. H From internal/external corner I Above ground, roof, or balcony level J From a surface or boundary facing the terminal K From a terminal facing a terminal L From an opening in the car-port into the building M Vertically from a terminal on the same wall N Horizontally from a terminal on the same wall P From a structure to the side of the vertical terminal Q From the top of the vertical terminal to the roof flashing
R To the side of a boundary S To the side of an opening or window on a pitched roof T Below an opening or window on a pitched roof V From a vertical terminal to an adjacent opening (window, air-brick, etc.) W From a vertical terminal to an adjacent vertical terminal

Minimum distance
300 mm 300 mm 300 mm 25 mm 25 mm 25 mm 25 mm (60mm for 80/125mm) 25 mm (60mm for 80/125mm) 300 mm 600 mm* 1200 mm 1200 mm 1500 mm 300 mm 300 mm As determined by the fixed collar of the vertical terminal 300 mm 600 mm 2000 mm 2000 mm 300 mm (only if both terminals are the same height)

*The possibility that this may be deemed as causing a nuisance, should be considered

Circulator residual discharge head The boiler is fitted with a high-efficiency circulator already hydraulically and electrically connected. The relative usable performance values are shown in the chart.
800

700

600

Residual head (mbar)

500

400

300

200
47 W
100

0

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

Flow rate (l/h)

13

3. SECTION – GENERAL REQUIREMENTS (UK)

BS 5440 BS 5440 BS EN 12828 BS 5546 BS 6798 BS 6891
BS 7074

PART 1 PART 2
PART 1

FLUES FLUES & VENTILATION DESIGN FOR WATER-BASED HEATING SYSTEMS INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES
INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 70kW
LOW PRESSURE INSTALLATION PIPES APPLICATION, SELECTION, AND INSTALLATION OF EXPANSION VESSELS AND ANCILLARY EQUIPMENT FOR SEALED WATER SYSTEM

This appliance must be installed by a competent person in accordance with the Gas Safety (Installation & Use) Regulations.
3.1 RELATED DOCUMENTS
The installation of this boiler must be in accordance with the relevant requirements of the Gas Safety (Installation & Use) Regulations, the local building regulations, the current I.E.E. wiring regulations, the bylaws of the local water undertaking, the Building Standards (Scotland) Regulation, and Building Standards (Northern Ireland) Regulations. It should be in accordance also with any relevant requirements of the local authority and the relevant recommendations of the following British Standard Codes of Practice.
ATTENTION The use of PPE (Personal Protective Equipment) such as but not limited to gloves, mask, safety glasses, etc. is strongly recommended whenever carrying out the installation, repair, or maintenance of this appliance ­ please pay particular attention to: · Sharp edges that may be encountered when:- handling or
lifting the appliance, removing parts, etc. during installation and maintenance · Airborne particles that may be released and/or disturbed when cleaning or removing components during maintenance · Water treatment chemicals that could have been added to the system water may spill from the appliance and or components during maintenance
Please refer to an appropriate Health and Safety document such as HSE L23 (UK) or S.I. 299 (Ireland), for more detailed advice on safe working practices and procedures.
3.2 LOCATION OF APPLIANCE
The appliance may be installed in any room or internal space, although particular attention is drawn to the requirements of the current I.E.E. wiring regulations, and in Scotland, the electrical provisions of the Building Regulations, with respect to the installation of the appliance in a room or internal space containing a bath or shower. When an appliance is installed in a room or internal space containing a bath or shower, the appliance or any control pertaining to it must not be within reach of a person using the bath or shower (refer to IEE regs). The location chosen for the appliance must permit the provision of a safe and satisfactory flue and termination. The location must also permit an adequate air supply for combustion purposes and an adequate space for servicing and air circulation around the appliance. Where the installation of the appliance will be in an unusual location special procedures may be necessary, BS 6798 gives detailed guidance on this aspect. A compartment used to enclose the appliance must be designed and constructed specifically for this purpose. An existing compartment/cupboard may be utilised provided that it is modified to suit. Details of essential features of compartment/ cupboard design including airing cupboard installations are given in BS 6798. This appliance is not suitable for external installation.
3.3 GAS SUPPLY
The gas meter ­ as supplied by the gas supplier ­ must be checked to ensure that it is of adequate size to deal with the maximum rated input of all the appliances that it serves. Installation pipes must be fitted in accordance with BS 6891. Pipe work from the meter to the appliance must be of adequate size. Pipes of a smaller size than the appliance gas inlet connection must not be used. The installation must be tested for soundness in accordance with BS6891. If the gas supply serves more than one appliance, it must be ensured that an adequate supply is maintained to each appliance when they are in use at the same time.
14

NOTE: It is recognised that pressure loss’ through the gas cock and gas valve may result in a pressure drop of approximately 2mbar between the gas meter and gas valve inlet test point; this will not impair the performance of the appliance, provided that a dynamic pressure of 18mbar is available at the appliance inlet. 3.4 FLUE SYSTEM The terminal should be located where the dispersal of combustion products is not impeded and with due regard for the damage and discoloration that may occur to building products located nearby. The terminal must not be located in a place where it is likely to cause a nuisance (see fig. 4). In cold and/or humid weather, water vapour will condense on leaving the terminal; the effect of such pluming must be considered. If installed less than 2m above a pavement or platform to which people have access (including balconies or flat roofs) the terminal must be protected by a guard of durable material. The guard must be fitted centrally over the terminal. Refer to BS 5440 Part 1, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves. 3.5 AIR SUPPLY The following notes are intended for general guidance only. This appliance is a room-sealed, fan-flued boiler, consequently it does not require a permanent air vent for combustion air supply. When installed in a cupboard or compartment, ventilation for cooling purposes is also not required. 3.6 WATER CIRCULATION Detailed recommendations are given in BS EN 12828 and BS 6798. The following notes are for general guidance only. 3.6.1 PIPEWORK It is recommended that copper tubing to BS 2871 Part 1 is used in conjunction with soldered capillary joints. Where possible pipes should have a gradient to ensure air is carried naturally to air release points and that water flows naturally to drain cocks. Except where providing useful heat, pipes should be insulated to avoid heat loss and in particular to avoid the possibility of freezing. Particular attention should be paid to pipes passing through ventilated areas such as under floors, loft space, and void areas. 3.6.2 AUTOMATIC BY-PASS The appliance has a built-in automatic by-pass, consequently there is no requirement for an external by-pass, however the design of the system should be such that it prevents boilercycling’.
3.6.3 DRAIN COCKS These must be located in accessible positions to facilitate draining of the appliance and all water pipes connected to the appliance. The drain cocks must be manufactured in accordance with BS 2879.
3.6.4 AIR RELEASE POINTS These must be positioned at the highest points in the system where air is likely to be trapped. They should be used to expel trapped air and allow complete filling of the system.
3.6.5 EXPANSION VESSEL The appliance has an integral expansion vessel to accommodate the increased volume of water when the system is heated. Refer to the specification table for more detailed information.
3.6.6 FILLING POINT A method for initial filling of the system and replacing water lost during servicing etc. directly from the mains supply, must be provided (see fig. 5). This method of filling should comply with the current Water Supply (Water Fittings) Regulations 1999 and Water Bylaws 2000 (Scotland).

3.6.7 LOW PRESSURE SEALED SYSTEM An alternative method of filling the system would be from an independent make-up vessel or tank mounted in a position at least 1 metre above the highest point in the system and at least 5 metres above the boiler (see fig. 6). The cold feed from the make-up vessel or tank must be fitted with an approved non-return valve and stopcock for isolation purposes. The feed pipe should be connected to the return pipe as close to the boiler as possible.
3.6.8 FREQUENT FILLING Frequent filling or venting of the system may be indicative of a leak. Care should be taken during the installation of the appliance to ensure all aspects of the system are capable of withstanding pressures up to at least 3 bar.
3.7 ELECTRICAL SUPPLY
The appliance is supplied for operation on 230V @ 50Hz electrical supply; it must be protected with a 3-amp fuse (supplied). The method of connection to the mains electricity supply must allow for complete isolation from the supply. The preferred method is by using a double-pole switch with a contact separation of at least 3mm. The switch must only supply the appliance and its corresponding controls, i.e. time clock, room thermostat, etc.
Warning! This appliance must be earthed.
3.8 MOUNTING ON A COMBUSTIBLE SURFACE
The appliance can be mounted on a wall of combustible material without any requirement to fit any additional protective (fireresistant) material.
3.9 TIMBER FRAMED BUILDINGS
If the appliance is to be fitted in a timber framed building, it should be fitted in accordance with the Institute of Gas Engineers publication (IGE/UP/7) `Guide for Gas Installations in Timber Frame Buildings’.
3.10 WATER TREATMENT
Vokera recommend that water treatment be carried out in accordance with the Benchmark Guidance on water treatment in central heating systems. If water treatment products are to be used, then they must be entirely suitable for use with a stainless-steel heat exchanger. Any water treatment product, must be administered in strict accordance with the manufacturer’s instructions. If the appliance is to be installed to an existing system; water treatment and flushing of the complete heating system should be carried out in accordance with BS 7593 and the Benchmark Guidance on water treatment in central heating systems.

control valve

temporary connection

control valve

flow/return pipe

double check valve

Automatic air-vent

Make-up vessel or tank

supply pipe

Fig.5

Non-return Stopcock valve

5.0 metres minimum

Heating return

Fig.6

15

3A. SECTION – GENERAL REQUIREMENTS (EIRE)

This appliance must be installed by a competent person in accordance with and defined by, the Standard Specification (Domestic Gas Installations) Declaration (I.S. 813).
3A.1 RELATED DOCUMENTS
The installation of this boiler must be in accordance with the relevant requirements of the local building regulations, the current ETCI National Rules for Electrical Installations, and the bylaws of the local water undertaking. It should be in accordance also with any relevant requirements of the local and/or district authority.
ATTENTION The use of PPE (Personal Protective Equipment) such as but not limited to gloves, mask, safety glasses, etc. is strongly recommended whenever carrying out the installation, repair, or maintenance of this appliance ­ please pay particular attention to: · Sharp edges that may be encountered when:- handling or
lifting the appliance, removing parts, etc. during installation and maintenance · Airborne particles that may be released and/or disturbed when cleaning or removing components during maintenance · Water treatment chemicals that could have been added to the system water may spill from the appliance and or components during maintenance
Please refer to an appropriate Health and Safety document such as HSE L23 (UK) or S.I. 299 (Ireland), for more detailed advice on safe working practices and procedures.
3A.2 LOCATION OF APPLIANCE
The appliance may be installed in any room or internal space, although particular attention is drawn to the requirements of the current ETCI National Rules for Electrical Installations, and I.S. 813, Annex K. When an appliance is installed in a room or internal space containing a bath or shower, the appliance or any control pertaining to it must not be within reach of a person using the bath or shower. The location chosen for the appliance must permit the provision of a safe and satisfactory flue and termination. The location must also permit an adequate air supply for combustion purposes and an adequate space for servicing and air circulation around the appliance. Where the installation of the appliance will be in an unusual location special procedures may be necessary, refer to I.S. 813 for detailed guidance on this aspect. A compartment used to enclose the appliance must be designed and constructed specifically for this purpose. An existing compartment/cupboard may be utilised provided that it is modified to suit. This appliance is not configured for external installation.
3A.3 GAS SUPPLY
The gas meter ­ as supplied by the gas supplier ­ must be checked to ensure that it is of adequate size to deal with the maximum rated input of all the appliances that it serves. Installation pipes must be fitted in accordance with I.S. 813. Pipe work from the meter to the appliance must be of adequate size. Pipes of a smaller size than the appliance gas inlet connection must not be used. The installation must be tested for soundness in accordance with I.S. 813. If the gas supply serves more than one appliance, it must be ensured that an adequate supply is maintained to each appliance when they are in use at the same time.
NOTE: It is recognised that `pressure loss’ through the gas cock and gas valve may result in a pressure drop of approximately 2mbar between the gas meter and gas valve inlet test point; this will not impair the performance of the appliance, provided that a dynamic pressure of 18mbar is available at the appliance inlet.
3A.4 FLUE SYSTEM
The terminal should be located where the dispersal of combustion products is not impeded and with due regard for the damage and discoloration that may occur to building products located nearby. The terminal must not be located in a place where it is likely to cause a nuisance (see I.S. 813). In cold and/or humid weather, water vapour will condense on leaving the terminal; the effect of such pluming must be considered. If installed less than 2m above a pavement or platform to which people have access (including balconies or flat roofs) the terminal must be protected by a guard of durable material. The guard must be fitted centrally over the terminal. Refer to I.S. 813, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves.
16

3A.5 AIR SUPPLY
The following notes are intended for general guidance only. This appliance is a room-sealed, fan-flued boiler, consequently it does not require a permanent air vent for combustion air supply. When installed in a cupboard or compartment, ventilation for cooling purposes is also not required.
3A.6 WATER CIRCULATION
Specific recommendations are given in I.S. 813. The following notes are for general guidance only.
3A.6.1 PIPEWORK It is recommended that copper tubing be used in conjunction with soldered capillary joints. Where possible pipes should have a gradient to ensure air is carried naturally to air release points and that water flows naturally to drain cocks. Except where providing useful heat, pipes should be insulated to avoid heat loss and in particular to avoid the possibility of freezing. Particular attention should be paid to pipes passing through ventilated areas such as under floors, loft space, and void areas.
3A.6.2 AUTOMATIC BY-PASS The appliance has a built-in automatic by-pass, consequently there is no requirement for an external by-pass, however the design of the system should be such that it prevents boiler cycling’. 3A.6.3 DRAIN COCKS These must be located in accessible positions to facilitate draining of the appliance and all water pipes connected to the appliance. 3A.6.4 AIR RELEASE POINTS These must be positioned at the highest points in the system where air is likely to be trapped. They should be used to expel trapped air and allow complete filling of the system. 3A.6.5 EXPANSION VESSEL The appliance has an integral expansion vessel to accommodate the increased volume of water when the system is heated. Refer to the specification table for more detailed information. 3A.6.6 FILLING POINT A method for initial filling of the system and replacing water lost during servicing etc. must be provided (see fig. 5). You should ensure this method of filling complies with the local water authority regulations. 3A.6.7 LOW PRESSURE SEALED SYSTEM An alternative method of filling the system would be from an independent make-up vessel or tank mounted in a position at least 1 metre above the highest point in the system and at least 5 metres above the boiler (see fig. 6). The cold feed from the make-up vessel or tank must be fitted with an approved non-return valve and stopcock for isolation purposes. The feed pipe should be connected to the return pipe as close to the boiler as possible. 3A.6.8 FREQUENT FILLING Frequent filling or venting of the system may be indicative of a leak. Care should be taken during the installation of the appliance to ensure all aspects of the system are capable of withstanding pressures up to at least 3 bar. 3A.7 ELECTRICAL SUPPLY The appliance is supplied for operation on 230V @ 50Hz electrical supply; it must be protected with a 3-amp fuse (supplied). The method of connection to the mains electricity supply must allow for complete isolation from the supply. The preferred method is by using a double-pole switch with a contact separation of at least 3mm. The switch must only supply the appliance and its corresponding controls, i.e. time clock, room thermostat, etc. Warning! This appliance must be earthed. 3A.8 MOUNTING ON A COMBUSTIBLE SURFACE The appliance can be mounted on a wall of combustible material without any requirement to fit any additional protective (fireresistant) material. 3A.9 TIMBER FRAMED BUILDINGS If the appliance is to be fitted in a timber framed building, it should be fitted in accordance with I.S. 813 and local Building Regulations. The Institute of Gas Engineers publication (IGE/ UP/7)Guide for Gas Installations in Timber Frame Buildings’ gives specific advice on this type of installation.

3A.10 WATER TREATMENT
Vokera recommend that water treatment be carried out in accordance with the Benchmark Guidance on water treatment in central heating systems. If water treatment products are to be used, then they must be entirely suitable for use with a stainless-steel heat exchanger. Any water treatment product, must be administered in strict accordance with the manufacturer’s instructions. If the appliance is to be installed to an existing system; water treatment and flushing of the complete heating system should be carried out in accordance with BS 7593 and the Benchmark Guidance on water treatment in central heating systems.

3A.11 DECLARATION OF CONFORMITY
A Declaration of Conformity (as defined in I.S. 813) must be provided on completion of the installation. A copy of the declaration must be given to the responsible person and also to the gas supplier if required. This appliance must be installed by a competent person in accordance with and defined by, the Standard Specification (Domestic Gas Installations) Declaration (I.S. 813).

4. SECTION – INSTALLATION

NOTE
Please refer to 3/3A and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.

Fig.7

4.1 PREPARATION FOR MOUNTING THE

APPLIANCE

The appliance should be mounted on a smooth, vertical sur-

A

face, which must be capable of supporting the full weight of

the appliance. Care should be exercised when determining the

position of the appliance with respect to hidden obstructions

such as pipes, cables, etc.

When the position of the appliance has been decided ­ using

the template supplied ­ carefully mark the position of the anchor

holes (see Fig. 7) and flue-hole (if applicable).

Ensure that the anchors are securely fixed to support the appliance weight.

A

TIGHTENING TORQUE

Ø 3/4″ Ø 1/2”

35Nm 25Nm

17

4.2 FITTING THE FLUE
This appliance incorporates a `click-fit’ flue connection at the top of the appliance.
NOTE: The boiler flue gas exhaust turret is sized for a concentric pipe with an external diameter of the flue gas pipe 60 +0.6 -0.3 mm and an external diameter of the air pipe 100 +0.3 -0.7 mm. Make sure the coupling is watertight.

4.2.1 CONCENTRIC HORIZONTAL FLUE These instructions relate specifically to the installation of this appliance with the Vokera 60/100mm `X-type’ (click-fit) flue terminals accessories. For specific instructions on installing this appliance with an alternative Vokera flue system, e.g. 80/125mm; please refer to the instructions supplied with the specific flue system, or download the instructions from the Vokera website. The appliance flue outlet elbow can be rotated through 360º on its vertical axis. In addition the flue may be extended from the outlet elbow in the horizontal plane. A reduction must also
be made to the maximum length (see table below) when ad-
ditional bends are used.

Reduction for additional bends

Bend
45º bend 90º bend

Reduction in maximum flue length for each bend 1.3 metre
1.6 metre

Horizontal/Vertical flue terminals and accessories

Part No. Description

Length/Size

20122759 XF Horizontal `Click fit’ Flue Kit 796mm C/E

20122761 XT Telescopic `Click fit’ Flue Kit 400-575mm C/E

20122763 XV Vertical `Click fit’ Flue Kit

1000mm + VC

20132060 0.5-Metre Extension

500mm

20132061 1.0-Metre Extension

1000mm

20132062 2.0-Metre Extension

2000mm

20132059 90-Degree Bend

N/A

20132058 45-Degree Bend x 2

N/A

20131979 Telescopic Extension

372/519mm

20142842 PMK Plume Kit

1370mm

20142841 45° Plume divertor

N/A

20132050 Pitched Roof Flashing

500mm x 500mm

20135582 Flat Roof Flashing

340mm Dia.

20135587 Wall Brackets

208mm C/E

20121903 Vert. Connector `Click Fit’ VC

131mm

Fig.7: referring to position A, mark and drill a hole for the passage of the flue pipe. Both horizontal terminals (fixed & telescopic) have an eccentric configuration, that enables condense fluid to drain back to the appliance; consequently the terminals should be installed level.
NOTE: any horizontal runs that incorporate extensions, must have a 3-degree fall-back to the appliance.
NOTE: Minimum horizontal flue length = 0.35m.

NOTE (Fig.8): The appliance incorporates a click-fit’ flue connection. Ensure that both screwsC’ on the click-fit’ have been slackened off. Ensure that the connector is correctly aligned with theclick-fit’ and insert it into the click-fit’ until it clicks into position (this is when the tabs at pointsA’ are located in the groove of the flue bend connector). Both screws (C) should now be tightened. NOTE Fit the internal (white) trim to the flue assembly prior to connecting the flue pipe to the bend. You must ensure that the entire flue system is properly supported and connected. Seal the flue assembly to the wall using cement or a suitable alternative that will provide satisfactory weatherproofing. The exterior trim can now be fitted.
Fig.9
Fig.10 A

B A
C

A C

Fig.8
4.2.2 FITTING THE HORIZONTAL FLUE KIT Carefully measure the distance from the centre of the appliance flue outlet to the edge of the finished outside wall (dimension X). Add 65mm to dimension X to give you Dimension Y (see Fig.9). Measure dimension Y from the terminal end of the concentric flue pipe and cut off the excess ensuring any burrs are removed. Pass the concentric flue pipe through the previously drilled hole. Fit the flue bend to the boiler flue outlet and insert the concentric flue pipe into the flue bend ensuring the correct seal is made.

18

4.2.3 EXTENDING THE FLUE Connect the bend ­ supplied with the terminal kit ­ to the top
of the boiler (see Fig.8). The additional bends & extensions
have push-fit connections, care should be taken to ensure that the correct seal is made when assembling the flue system. Connect the required number of flue extensions or bends (up to the maximum equivalent flue length) to the flue terminal (Fig.11). The flue system should have a 3º rise from the boiler to outside, to ensure any condense fluid that forms, is allowed to drain back to the appliance.
NOTE
When cutting an extension to the required length, you must
ensure that the excess is cut from the plain end of the exten-
sion (Fig.11). Remove any burrs, and check that all seals are
located properly. You must ensure that the entire flue system is properly supported and connected. Seal the flue assembly to the wall using cement or a suitable alternative that will provide
satisfactory weatherproofing. The interior and exterior trim can now be fitted.

Fig.11

4.2.4 CONCENTRIC VERTICAL FLUE Using Fig.13 as a reference, cut a 110mm diameter hole in the roof and/or ceiling to facilitate the route of the vertical flue system. NOTE: ensure that the top of the appliance – if already in position – is covered and protected from the possibility of any dust or debris falling or entering the appliance via the flue outlet.
Fit the appropriate flashing to the roof and insert the vertical flue terminal through the flashing from outside, ensuring that the collar of the terminal is located over the outlet of the flashing.
The fixing holes for the appliance wall mounting bracket should now be drilled and plugged. An appropriate type and quantity of fixing should be used to ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket.
If the vertical flue system requires additional extensions or bends, connect these to the vertical terminal, ensuring the following: – the maximum permitted flue length is not exceeded – reductions to the maximum flue length have been made for
any bends that are used on the vertical flue system – any horizontal sections of the flue system, incorporate a
3-degree fallback to the appliance – the entire flue system is fully supported and secured using
the appropriate brackets – if/when an extension is cut to a shorter length, ensure that
the excess length is cut from the plain end of the extension, and that any burrs or rough edges are removed – all seals are properly located before assembling or connecting the flue system.
IMPORTANT: The VX flue terminal is supplied with a sachet of silicone lubricant; smear a small amount of the lubricant around both inner and outer connections, at both ends of the vertical flue connector (supplied with the VX terminal).
NOTE (Fig.12): The appliance incorporates a click-fit’ flue connection. Ensure that both screwsC’ on the click-fit’ have been slackened off. Ensure that the connector is correctly aligned with theclick-fit’ and insert it into the click-fit’ until it clicks into position (this is when the tabs at pointsA’ are located in the groove of the vertical flue connector). Both screws (C) should now be tightened.
NOTE: If more convenient, the vertical flue connector can be attached to the vertical flue terminal/extension before connecting it to the appliance.
NOTE: Minimum length of vertical flue = 2m.
NOTE: Additional bends and/or extensions can be connected to the terminal connector if desired, however if additional bends are fitted, a reduction must be made to the maximum flue length (see table below).

Reduction for bends

Bend 45º bend 90º bend

Reduction in maximum flue length for each bend 1.3 metre 1.6 metre

Fig.13

IMPORTANT The vertical flue terminal is 1.0 metre in length and cannot be cut; therefore it may be necessary to adjust the height of the appliance to suit or use a suitable extension.

4.3 CONNECTING THE GAS & WATER (FIG.14)
The appliance is supplied with an accessory pack that includes service valves. The service valves are of the compression type. The accessory pack contains sealing washers’ etc, for use with the service valves. When connecting pipe work to the valves, tighten the compression end first then insert the sealing washers before tightening the valve to the appliance. NOTE: it will be necessary to hold the valve with one spanner whilst tightening with another.
The valves must be fitted perpendicular with the rear of the appliance, in order to avoid obstruction.

Fig.14

C/H return valve

Gas cock

C/H flow valve

vertical connection

Fig.12

B A C

A C

4.3.1 GAS The appliance is supplied with a 15mm service valve, connect a 15mm pipe to the inlet of the valve and tighten both nuts. NOTE: it will be necessary to calculate the diameter of the gas supply pipe to ensure the appliance has an adequate supply of gas.

flange installed as standard

19

4.3.2 FLOW & RETURN The appliance is supplied with 22mm service valves for the flow and return connections, connect a 22mm pipe to the inlet of each valve and tighten both nuts. NOTE: depending on system requirements, it may necessary to increase the size of the flow & return pipe work after the service valve connections.
4.3.3 SAFETY VALVE The appliance incorporates a combined pressure relief and condensate discharge arrangement. Consequently the combined discharge pipe must have a continuous fall away from the appliance and should be suitably protected against the risk of freezing. Alternatively it is permissible to fit a tundish, e.g. Mactun, Hotun, etc. close to or adjacent to the discharge pipe where it exits the appliance.

The condensation exhaust system must be dimensioned and installed in such a way as to guarantee the correct evacuation of the condensation produced by the appliance and/or collected by the evacuation systems of combustion products. All the components of the condensation exhaust system must be made in a workmanlike manner using materials that are suitable for withstanding the mechanical, thermal and chemical stresses of the condensation produced by the appliance over time. Note: if the condensation exhaust system is exposed to the risk of frost, always provide an adequate level of insulation of the pipe and consider any increase in the diameter of the pipe itself. The condensation exhaust pipe must always have an adequate slope level to prevent the condensation from stagnating and its proper drainage. The condensation exhaust system must have an inspectable disconnection between the condensation exhaust pipe of the appliance and the condensation exhaust system.

Fig.15
4.3.4 CONDENSE PIPE This appliance will – under normal operating conditions produce condensate fluid that will require to be disposed of via the dwelling’s waste water drainage system. Vokera strongly recommends that the condensate pipe is connected to the internal waste water pipework in accordance with BS6798. BS6798 provides comprehensive instruction and advice on all permissible condensate disposal methods; notwithstanding this, it is essential that the following is strictly adhered to: – use only plastic drainage pipe (minimum OD of 21.5mm) – horizontal runs must incorporate a minimum 45mm fall per
metre, away from the appliance – external pipework and/or pipework in unheated areas, must
have a minimum OD of 32mm and be insulated with Class-O pipe insulation – the route, type, and termination of the condensate disposal method, must not permit any spillage of condensate fluid, into the dwelling in the event of a blockage or freezing of the condesate pipework
– if there is a risk of freezing, Vokera strongly recommends that a tundish is incorporated within the discharge pipework (see section 4.3.3 above).
Should it not be possible to route and terminate the condensate pipework internally using `gravity discharge’; Vokera recommends that the Vokera condensate pump (code 404) be considered as an alternative solution. Ensure that the end-user is aware of the effect/consequences of the condensate pipework becoming blocked or frozen.
4.3.5 INSTRUCTION FOR CONDENSATION EXHAUST CONNECTION
b All components of the product condensation drain sy-
stem must be properly maintained in accordance with the manufacturer instructions and cannot be modified in any way.
This product is designed to prevent the escape of gaseous products of combustion through the condensation drain pipe with which it is equipped, this is obtained by using a special siphon placed inside the appliance The construction of the condensation exhaust system downstream of the appliance is the responsibility of the installer.

4.4 ELECTRICAL CONNECTIONS
The boiler is supplied w ith a short fly-lead. This lead can be used for connection to the electrical supply. Connect the fly-lead to a fused isolator in the following way: · brown wire to LIVE supply · blue wire to NEUTRAL supply · green/yellow to EARTH connection. Insert the supplied 3-AMP fuse into the fused isolator. Should the fly-lead be unsuitable, refer to 4.6 for details on how to connect the electrical supply directly to the boiler. The electrical supply must be as specified in section 3/3A. A qualified electrician should connect the appliance to the electrical supply. If controls – external to the appliance – are required, a competent person must undertake the design of any external electrical circuits, please refer to section 11 for detailed instructions. ANY EXTERNAL CONTROL OR WIRING MUST BE SERVED FROM THE SAME ISOLATOR AS THAT OF THE APPLIANCE. The supply cable from the isolator to the appliance must be 3-core flexible seized 0.75mm to BS 6500 or equivalent. Wiring to the appliance must be rated for operation in contact with surfaces up to 90 ºC. NOTE: · See pages 22 & 43 for wiring of typical external controls into
connector CE8. · Do not connect 230V to any of the CE8 terminals. · Do not remove the white link wire from TBT unless it’s to be
used to connect an approved control.
MODBUS CONNECTION – CE4 The CE4 connector is located on the underside of the appliance towards the front left.
b We recommend using conductors with a section no larger
than 0,5 mm2.
CE8 LOW-VOLTAGE CONNECTIONS The CE8 low-voltage connector is located on the underside of the appliance; at the rear of the right hand side. There are 4-pairs of connectors: >TBT – Safety or alarm connector >TA – External control (clock, etc.) >OT+ – Opentherm >SE – External sensor

20

NOTE: when an OT bus remote control is connected 1.2 to the system, the boiler display shows (see figure on bar the right):

Please note that, if OT bus remote control connected: – it is no longer possible to set the boiler OFF/WINTER
status (which can now be set via the OT bus remote control) – the heating setpoint value calculated by the OT bus remote control is displayed in the “System Info” screen – it is only possible to set the heating setpoint in the boiler if zone valve management is enabled.

12 Config aux 1

1.2 12 Config aux 1

1.2

39

bar 39

bar

Gio Set aux output

Gio Set aux output

14

JUL

Zone valve

14 JUL

Zone valve

Supplementary pump

Supplementary pump

12°C

12°C

4.6 CONNECTING THE MAINS (230V) INPUT
Unhook and remove the terminal block cover (230V).
Pass the cable through the cable anchorage point. Connect the supply cable wires (LIVE, NEUTRAL, & EARTH) to their corresponding terminals (L, N, & E) on the appliance ­ high voltage ­ terminal block (M3). When connecting the EARTH wire, ensure that it’s left slightly longer that the others, this will prevent strain on the EARTH wire should the cable become taut. Route the electrical supply via the cable entry/exit point and secure to the sleeve using an appropriate cable tie, and/or silicone sealant.
If it is anticipated that external controls will be required please refer to the wiring diagrams in section 11 for more detailed information.
NOTE It is the installer’s responsibility to ensure that the appliance is properly Earthed. Vokèra Ltd. cannot be held responsible for any damages or injuries caused as a result of incorrect Earth wiring.

The value can be seen in the “System Info” screen
– to activate the COMBUSTION ANALYSIS, function, with OT bus remote control connected, the connection must be temporarily disabled; remember to restore this connection once the function has completed.
Alarm reset, INFO displays and settings remain active.
4.5 CASING REMOVAL
To gain internal access to the appliance you must first remove the front cover, proceed as outlined below: · locate and unscrew the 2-screws that secure the front cover
to the appliance · Disengage both clips at 1A to release the lower part of the
front cover · lift the cover upward to disengage it from the top locating
hooks and then remove · store the cover and screws safely until required. Re- fit in the
reverse order · press and hold the spring tabs on either side of the control
panel where it meets the appliance side panels and gently lower it until it rests.

3

1a

b To tighten the

2

1

screws, apply a torque of 0.6 –

0.8 Nm

1a

21

ACCESSORIES

X4

L-N antifreeze heaters

CE8

TA: (room thermostat)

CE8

OT+

CE8 SE: outdoor temperature sensor

CE8

TBT: Low temperature limit thermostat

X10

Alarm remote control

X11 Zone valve or additional pump

ATTENTION – Do not connect any high voltage (230V) power to the
connections on CE4 or CE8. – Any switched live’ (230v L/N) supply must only be connected to the CN1 terminals on relay board BE11 (see below). – Connect the Vokera external sensor to the SE connections on plug CE8 or terminals 3&4 (orange) on X18 of the PCB (see also 4.4). – Connect the Opentherm control, e.g. Hi COMFORT to the OT+ connections on plug CE8 or terminals 5 & 6 (pink) on X18 of the PCB (see also 4.4). – The TA connections on terminals 7 & 8 (black) of X18 arevoltage-free’ and MUST only be used to switch a `voltagefree’ external control, e.g. 2-wire room thermostat. – Do not remove the white link-wire from plug CE8.

NOTE – Only connect the Vokera external sensor if there is no
requirement for HW. – See 4.6 if the supplied `fly-lead’ is unsuitable or of insufficient
length. – Please contact the Vokera technical helpline (0330 236
8630) if you require further information on any of the above.

22

5. COMMISSIONING & OPERATION

NOTE: please refer to 3/3A and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.
5.1 GAS SUPPLY INSTALLATION
Inspect the entire installation including the gas meter, test for tightness and purge. Refer to BS 6891 (I.S. 813 in ROI) for specific instruction.
5.2 THE HEATING SYSTEM
The appliance contains components that may become damaged or rendered inoperable by oils and/or debris that are residual from the installation of the system, consequently it is essential that the system be flushed in accordance with the following instructions.
5.3 INITIAL FILLING OF THE SYSTEM
Ensure both flow and return service valves are open, remove appliance casing as described in 4.5, identify the automatic air release valves (AAV) and loosen the dust cap/s by turning the cap anti-clockwise one full turn. Ensure all manual air release valves located on the heating system are closed. Connect the filling loop (not supplied), slowly proceed to fill the system by firstly opening the inlet valve connected to the flow pipe, and then turning the lever on the fill valve, to the open position. As water enters the system the pressure gauge will begin to rise. Once the gauge has reached 1 BAR close both valves and begin venting all manual air release valves, starting at the lowest first. It may be necessary to go back and top-up the pressure until the entire system has been filled. Inspect the system for water tightness, rectifying any leaks.
5.4 INITIAL FLUSHING OF THE SYSTEM
The whole of the heating system must be flushed both cold and hot as detailed in 5.6. Open all radiator or heating valves and the appliance flow & return service valve. Drain the boiler and system from the lowest points. Open the drain valve full bore to remove any installation debris from the boiler prior to lighting. Refill the boiler and heating system as described in 5.3.
5.5 PRELIMINARY CHECKS
Before starting up the boiler, check: – confirm via the appliance data badge, that the appliance is
suitable/configured for the gas type and electrical supply that has been provided to the appliance – inspect the entire flue system and ensure that it has been installed in accordance with these instructions and the relevant standards that apply locally and/or nationally – that the required clearances have been met in respect of the requirements for maintenance – inspect the entire installation including the gas meter, test for tightness and purge. Refer to BS 6891 (I.S. 813 in ROI) for specific instruction – ensure that the rated delivery of the gas meter is adequate enough to serve this appliance and any other gas appliance connected to the same meter – ensure that the gas supply pipework is of adequate size to provide the maximum gas rate required by this appliance – check that the siphon is completely filled with water, otherwise fill it up (see chapter 5.7).
b Before connecting the “Hi, Comfort T300 or K100” de-
vices, the Connectivity Menu must be set up correctly to avoid communication failure problems (see section section 8.10).
5.6 FINAL FLUSHING OF THE HEATING
SYSTEM
The system shall be flushed in accordance with BS 7593 (I.S. 813 ROI). Should a cleanser be used, it must be suitable for stainless-steel heat exchangers. It shall be from a reputable manufacturer and shall be administered in strict accordance with the manufacturers’ instructions and the DWTA code of practice.
NOTE: Chemicals used to cleanse the system and/or inhibit corrosion must be pH neutral, i.e. they should ensure that the level of the pH in the system water remains neutral. Premature failure of certain components can occur if the level of pH in the system water is out-with normal levels.

5.7 FIRST COMMISSIONING
On first ignition after prolonged inactivity and after maintenance, before putting the appliance into operation it is essential to
proceed as described in the following paragraphs. At the first
start-up, the calibration procedure (GAC) is also recommen-
ded to allow the boiler to reach its optimal performance. If the
procedure is not performed, the display shows “CFG – GAC Not performed”. It is also essential to fill the condensate collection siphon by pouring about 1 litre of water into the boiler combustion analysis take-off and check: – that the float within the trap is free and moving – the correct flow of water from the boiler outlet discharge
pipe
– there are no leaks of the condensate drain connection line.
Correct operation of the condensate drain circuit (siphon and
pipes) requires that the condensate level does not exceed the maximum level (max). Prior filling of the siphon and the presence of the safety float inside the siphon is designed to prevent the escape of combustion gases into the environment.

High efficiency mode (SERVICE) In this mode, the boiler limits the power output in heating for 60 minutes to a minimum value. Activating the chimney sweep temporarily disables this function.

12 Service menu

39
Gio

Chimney sweep

14 JUL

Ipd

Alarm history

Call service

Call service

12°C

High efficiency enable Not active

Contact service

1.2 12 High efficiency enable

1.2

bar 39

Activate function

bar

Gio

14 JUL Siphon fill time

Siphon fill delay

12°C

12 High efficiency enable

39

Activate function

Gio

14

Siphon fill time

JUL 60 Min

Siphon fill delay

60 Days

1.2 12 bar 39
Gio 14 JUL

1.2 bar
High efficiency in pro-

1.2
bar

gress

45 52 °C

°C

.5

.5

Heating

Hot water

12°C

12°C

42.5°C

49.5°C

5.8 VENTING CYCLE
Turn the main system switch ON. Every time the boiler is powered up, a vent cycle is run lasting 4 minutes.

12°C

75%

Air purging cycle

b When the vent cycle is running all heat requests are
inhibited except for DHW requests when the boiler is not in OFF.

If the boiler is not in the OFF condition, the vent cycle can be interrupted by tapping the “x” on the progress bar.

5.9 MANUAL CALIBRATION PROCEDURE
(GAC)
The GAC procedure, which is useful to calibrate the gas valve and combustion control system, is mandatory following: gas conversion – gas valve replacement – board replacement fan replacement – cleaning of primary heat exchanger and/or burner – replacement of flame detection electrode (ionisation) – replacement of burner insulation panel – modification of suction/exhaust pipes.

23

The GAC procedure must also be carried out on first startup. If this procedure is not carried out in the time required, the boiler will still be safe however it may be limited in performance and may also process combustion control signals.

b The procedure must be performed with the casing
closed.

The msg “CFG – call for GAC” is only displayed on the home page if the function has never been performed.

12 39

Gio

45 14

°C

JUL

.5

Heating

1.2
bar
52 °C .5
Hot water

12°C

42.5°C

Cfg

49.5°C

call for gac

– Power up the boiler and wait for the vent cycle to run (see paragraph section 5.8).
– If in the OFF condition, set the boiler to WINTER. – Generate a HEAT request. Although there are no limitations on
the part of the system, except those foreseen by the ALARMS supervision, however, it is advisable to do the GAC scan with boiler return system water below 15°C or in any case with a temperature compatible with the flow rate of system water towards the boiler. – Wait until the flame symbol appears on the display. No key must be pressed at this stage.

12 Combustion

39

Gio 14

Gas – gas type Methane

JUL D52 – p1 GAS VALVE

45

Gac

1.2 12 Gac

1.2

bar 39

bar

Gio 14 JUL

Perform full calibration?

Apl – power
12°C 25 kW

12°C

OK

12 Gac 39
Gio 14 JUL

Please wait

1.2 12 bar 39
Gio 14 JUL

Gac
4950

1.2
bar RPM

12°C

12 39

Gac

Gio 14 JUL

Calibration carried out successfully

12°C 1.2
bar

Calibration in progress

12°C

NOTE: If it is not possible to dissipate heat, it is still possible for high- temperature systems to carry out the GAC in a heating request by setting the heating water setpoint to 80.5°C, or even better, by activating the chimney sweep function and then, with the flame on, starting the GAC.
If the GAC is successfully completed, return to the main screen by pressing the HOME button; if the message “Calibration failed. Retry?” is displayed, you can repeat the procedure by pressing the OK button.
If the procedure is not carried out when it is mandatory to do so, this non- compliance may lead to a limited operation and the possibility of abnormal combustion control signals occurring.
If a fault occurs during the procedure or if the heat request is interrupted, the procedure would be terminated prematurely by displaying the fault status or automatically returning to the main screen. In this case, the procedure must be repeated.

5.10 SETTING THE THERMOREGULATION

NOTE: Thermoregulation via an external sensor is unsuitable for systems that incorporate a domestic hot water cylinder.

Thermoregulation is only available with an outdoor temperature sensor connected and is only active for the HEATING function.

12 39
Gio 14 JUL
12°C

Heating
Type of heating High temperature Max temp 80.5°C
Min temp 40°C
Thermoregulation Activate
Hourly scheduling Activate

1.2 12 Thermoregulation

1.2

bar 39

bar

Gio Activate function

14

Climatic curve

JUL 0.4

Night compensation Not active

Building type

12°C

5 Min Outdoor reactivity

20

12 Thermoregulation

1.2

39

bar

Gio Activate function

14

Climatic curve

JUL 0.4

Night compensation Not active

Building type

12°C

5 Min Outdoor reactivity

20

With the function not enabled or an outdoor temperature sensor, the boiler works at a fixed-point. The electronic thermostat algorithm will not use the measured outdoor temperature value directly, but rather an average outdoor temperature value , which takes account of the insulation of the building: in well-insulated buildings, outdoor temperature variations have less influence on the ambient temperature than in less insulated buildings. This value together with the temperature detected by the outdoor temperature probe can be displayed in the following screen:

12 System info

39
Gio

Screed heating hours

14 JUL

Flow probe

Return probe

1.2
bar 0 21°C 22°C

Dhw probe

20°C

12°C Dhw set
Exhaust probe

44°C 33°C

REQUEST FROM OT CHRONOTHERMOSTAT In this case, the delivery setpoint is calculated by the timed thermostat on the basis of the outdoor temperature value, and by the difference between the real ambient temperature and the required ambient temperature.

REQUEST FROM ROOM THERMOSTAT
In this case, the delivery setpoint is calculated by the adjustment
board on the basis of the outdoor temperature value, to obtain an
estimated ambient temperature of 20° (reference ambient tem-
perature). There are 2 parameters that are used to calculate the
delivery setpoint: slope of the compensation curve (KT) – modifiable by technical
personnel offset to reference ambient temperature – can be modified by
the user.

12 39

Building type

1.2 12 bar 39

Outdoor reactivity

1.2
bar

Gio

Gio

14

14

JUL

5

Min

JUL

20

12°C

12°C

OK

OK

12 Climatic curve

1.2

39

bar

Gio

14

0,2 JUL

12°C

OK

TYPE OF BUILDING It is indicative of the frequency with which the value of the calculated outdoor temperature for thermoregulation is updated, a low value for this value will be used for buildings that have little insulation.

24

REACTIVITY SEXT It is an indication of the speed with which variations of the measured outdoor temperature affect the calculated outdoor temperature value for thermoregulation, low values indicate high speeds.

CURVE SLOPE The heating thermoregulation curve maintains a theoretical temperature of 20°C in the room for outdoor temperatures between +20°C and -20°C. The choice of the curve depends on the minimum design outdoor temperature (and thus the geographical location) and the design flow temperature (and thereby the type of system) and should be carefully calculated by the installer, according to the following formula:

Tshift =

KT = Project delivery T. – Tshift 20- min. outdoor project T.
30°C standard system 25°C floor installations

If the calculation gives an intermediate value between two bends, you are advised to choose the thermoregulation bend closest to the value obtained.

Example: if the value obtained from the calculation is 1.3, it lies
between curve 1 and curve 1.5. Choose the nearest curve, i.e.
1.5. The settable KT values are as follows: standard system: 1,0÷3,0 free- standing system 0,2÷0,8.

Delivery temperature (°C)

100 90 MAX 80 CH SET 70
60 MIN 50 CH SET 40
30
20 20 15

THERMOREGULATION CURVES 3,0 2,5
10 5 0 -5 -10 External temperature (°C)

2,0 1,5
1,0 0,8 0,6 0,4 0,2
-15 -20

Offset on the reference ambient temperature In any case, the user can indirectly modify the HEATING setpoint value by inserting an offset on the reference temperature (20°C). This offset may vary from -5 to +5 (offset 0 = 20°C). To correct the offset, refer to section section 8.4″.

Delivery temperature (°C)

CLIMATIC CURVE CORRECTION 90

80

70

60

50

40

30

+5°C

20

20°C

10

-5°C

30 25 20 15 10 5 0 -5 -10 -15 -20

External temperature (°C)

12 Night compensation 39

1.2
bar

Gio Activate function

14

JUL

12°C
NIGHT COMPENSATION If a time programmer is connected to the input ROOM THERMOSTAT the night compensation can be enabled. In this case, when the CONTACT is CLOSED, the heat request is made by the flow probe on the basis of the outdoor temperature, to obtain a nominal ambient DAY temperature (20°C). The OPENING OF THE CONTACT does not produce a switch-off, but rather a reduction (parallel shift) of the climatic NIGHT curve (16°C).

Delivery temperature (°C)

PARALLEL NIGHT TIME REDUCTION 90
80
70
DAY TEMPERATURE CURVE
60
50
NIGHT TEMPERATURE CURVE
40
30
20
10 20 15 10 5 0 -5 -10 -15 -20 External temperature (°C)
In this case too, the user can indirectly modify the HEATING setpoint value by inserting an offset on the reference DAY temperature (20°C) or NIGHT temperature (16°C). This offset may vary from [-5 to +5]. NIGHT COMPENSATION is not available if OT+ chrono is connected. To correct the offset, refer to section section 8.3.
5.11 “COMFORT FUNCTIONS” & “SPECIAL DHW FUNCTIONS”
These functions apply only to the combi version of this appliance; if they are displayed or activated, the appliance will require to be re-configured to the correct hydraulic configuration.

5.12 SCREED HEATER FUNCTION

If the system is at low temperature the boiler provides a `screed heater’ function (function only available in OFF-state) which can be activated as follows:

12 39

1.2 bar

1.2 12 bar 39

Heating
Pump control type

1.2
bar

Gio

Gio 85

14 JUL

14 JUL

Ot cascade control Activate

Boiler off

Screed function

Antifreeze function

Anti cycle function

12°C

12°C 3Min

Reset ch timers

Activate

12 Screed function 39

1.2 12 bar 39

1.2 bar

1.2
bar

Gio

Gio

14

14

JUL

Proceeding with the screed

JUL

function?

Boiler off

Antifreeze function

12°C

OK

12°C

75%

Screed Function in progress

The screed heater function lasts 168 hours (7 days) during

which, in the zones configured as low temperature, a heating

request with initial zone delivery setpoint of 20°C is simulated,

subsequently increased according to the table indicated

below.

By accessing the `System Info’ menu, it is possible to display

the value for the number of hours that have elapsed since

the activation of the screed heater function. Once activated,

the function takes priority, if the machine is shut down by

disconnecting the power supply, when it is restarted the

function picks up from where it was interrupted. The function

can be interrupted before its end by switching the boiler to a

state other than OFF or by disabling the parameter.

DAY 1

TIME 0

TEMPERATURE 20°C

6

22°C

12

24°C

18

26°C

2

0

28°C

12

30°C

3

0

32°C

4

0

35°C

5

0

35°C

6

0

30°C

7

0

25°C

Note: The temperature and increase values can be set to different values only by qualified personnel, only if strictly necessary. The manufacturer declines all responsibility if the parameters are incorrectly set.

25

5.13 COMBUSTION CHECK
b The checks of the settings of CO2 in relation to the reference
parameters, indicated in the tables below, must be carried out with the casing closed.

To carry out the combustion analysis, proceed as follows:

1 12 39 Gio 14 JUL

1.2 bar

1.2
bar

2

Boiler off
Antifreeze function

12°C

3

12 Service menu

39
Gio

Chimney sweep

14

Ipd

JUL

Alarm history

Call service

Call service

12°C

High efficiency enable Not active

Contact service

12 Fan revolutions 39 4950 RPM
Gio 14
JUL 4950

The probe for the fumes analysis must be inserted until it reaches the stop.

1.2 12 Chimney sweep

1.2

bar 39

bar

Gio 14 JUL

Start Combustion analysis now?

12°C

OK

1.2
bar

RPM

12°C

MIN

RATED

MAX

Holding down the heating and Wi-Fi keys will take you to the chimney sweep function page without going through the password-protected technical menu.

CO2* max

METHANE GAS (G20)

LIQUID GAS (G31)

20S

8,8

25S

8,8

32S

8,8

(*) CO2 tolerance = ±1%

10,0

%

9,9

%

9,9

%

CO2* min

METHANE GAS (G20)

LIQUID GAS (G31)

20S

8,8

25S

8,8

32S

8,8

(*) CO2 tolerance = ±1%

10,0

%

10,0

%

10,0

%

Check that the values of O2 (max, nominal and min) related to

20% hydrogen mixture are in accordance with the following.

20S 25S 32S

max

% 2,4 2,4 2,4

O2 value relative to the 20% hydrogen mixture

Qmax Qmin

nominal min max nominal

% 4,3 % 6,2 % 2,4 % 4,3

4,3 6,2 2,4 4,3

4,3 6,2 2,4 4,3

min

% 6,2 6,2 6,2

– The COMBUSTION ANALYSIS lasts a maximum of 15 minutes; the procedure can be terminated prematurely by pressing the (HOME) key.
– If the system is in low temperature, live, without mixing or thermostatic valves, the COMBUSTION ANALYSIS must be carried out in DHW request mode.
b COMBUSTION ANALYSIS is terminated prematurely if:
– the delivery temperature exceeds 95°C; it will ignite again when the temperature falls below 75°C
– a flame is not detected resulting in an alarm
b – in the event of an alarm. With the “Config OT bus” function active, combustion control is not possible. To carry out the flue gases analysis, deactivate the function. Remember to reset the function once the combustion check has been completed.

12 Ot config

1.2

39

bar

Gio Activate function 14

JUL

b With the chimney sweep function in progress, press the
HOME button to activate the “GAC” procedure (follow the indications provided in section 5.9).

The display shows:

12 Chimney sweep 39 1400 rpm
Gio 14
JUL 1000

1.2 12 Chimney sweep bar 39 7843 rpm

Gio

14

7900 RPM

JUL

1.2
bar RPM

12°C

MIN

RATED

MAX

12°C

MIN

RATED

MAX

12°C
When the check has ended: exit the function by pressing “<” remove the analyser probe and close the combustion analysis
outlet with the relative plugs and screw put the analysis probe adapter (supplied with the boiler) in the
documentation envelope set the boiler to the required operating mode, depending on
the season regulate the requested temperature values according to
needs.

By setting the maximum value, the boiler will operate at maximum output; by setting the minimum value, the boiler will operate at minimum output.
Check on the analyser that CO2 max and minute values comply with the following tables.

26

5.14 ADJUSTMENTS

The boiler has already been adjusted during manufacturing by the manufacturer. However, if it is necessary to carry out the adjustments again (for example after extraordinary maintenance, after replacing the gas valve, after a gas transformation or after replacing the board) follow the procedures described below.

Maximum and minimum power and maximum heating adjustments must be carried out only by qualified personnel:

– Power the boiler

12 39
Gio 14 JUL
12°C

Configuration
Min rpm 1000 RPM Max rpm 7900RPM Max ch rpm 6300 RPM Range rated 6300 RPM

1.2 12 Min rpm

1.2

bar 39

bar

Gio

14

1000 JUL RPM

12°C

OK

12 Max rpm 39

1.2 12 Max ch rpm

1.2

bar 39

bar

Gio

Gio

14

14

7900 JUL RPM

6300 JUL RPM

12°C

OK

12°C

OK

– set the desired values by referring to tables 1 and 2 – check that the values on the two screens are the same.
b

The maximum heating fan speed used will be the one set in the RANGE RATED screen.

12 Max ch rpm 39

1.2 12 Range rated

1.2

bar 39

bar

Gio 14
6300 JUL RPM

Gio

14

6300 JUL

RPM

12°C

OK

12°C

OK

Once the gas conversion has been carried out: – check that the fan speed corresponds to the indications pro-
vided in tables 1 and 2, section section 5.15 – carry out a new “GAC” procedure (see section 5.9).

5.16 OUTPUT CHANGE

To change the boiler output type:

12 Combustion

1.2 12 Apl – power

1.2

39

bar 39

bar

Gio 14

Gas – gas type Methane

Gio

25 Kw

14

JUL D52 – p1 GAS VALVE

JUL

35 Kw

45

Gac

Apl – power

12°C 25 kW

12°C

Configure the fan speeds of your boiler as indicated in tables 1 and 2, section section 5.15.
MODEL 20kW – select 25kW and modify the fan revolutions according to the
indications provided in tables 1 and 2 of the relevant model. MODEL 30kW – select 35kW and modify the fan revolutions according to the
indications provided in tables 1 and 2 of the relevant model.
b Disconnect and reconnect power to the boiler after
changing the parameters.
5.17 SIGNALLING AND FAULTS
GREEN
DISPLAY WITH REGULAR OPERATION

ORANGE

RED

table 1 MAXIMUM NO. FAN
ROTATIONS 20S 25S 35S
table 2 MINIMUM NO. FAN
ROTATIONS 20S 25S 32S

METHANE GAS (G20)
6,300 6,200 7,700
METHANE GAS (G20)
1,000 1,100 1,100

LIQUID GAS

(G31)

6,100

rpm

5,800

rpm

7,500

rpm

LIQUID GAS

(G31)

1,250

rpm

1,250

rpm

1,250

rpm

5.15 GAS CONVERSION

b Conversion from a family gas to other family gas can be b performed easily also when the boiler is installed.
This operation must be carried out by professionally qualified personnel.

The boiler is designed to operate with methane gas (G20) according to the product label. It is possible to convert the boiler to LPG (G31) as follows:

12 Combustion

1.2 12 Gas – gas type

1.2

39

bar 39

bar

Gio 14

Gas – gas type Methane

Gio

Methane

14

JUL D52 – p1 GAS VALVE

JUL

Lpg

45

Gac

Type gas 3

Apl – power
12°C 25 kW

Type gas 4
12°C

b Switch the boiler off and on again after changing
parameters.

DISPLAY WITH

A FAULT

PRESENT

12

1.2 12

1.2

39

bar

39

bar

Gio

Gio

14

14

JUL E077
Absence of communication with low temperature thermostat

JUL
E011 Parasitic flame

12°C

12°C

The presence of a fault is indicated with two different colours: – orange: indicates that a self-resetting transient error is present
which could limit the correct operation of the boiler

– red (together with the symbol ) indicates the presence of an error which will put the boiler into a lockout condition.

Reset function To restore operation of the boiler in the event of a fault, press

. At this point, if the correct operating conditions have been

restored, the boiler will restart automatically. A maximum of 5

consecutive unlocking attempts can be made from the inter-

face, after which the interface displays

12

1.2

39

bar

Gio
14
JUL
E099 reset attempts exhausted

12°C

In this case, the boiler must be disconnected from the electricity supply and then reconnected again, to reactivate operation.
b If the attempts to reset the boiler do not work, contact the
Technical Assistance Centre.
27

PRESSURE fault When the pressure value falls below 0.5 bar, the following situations can occur:

warning signal FIL

12

0.5

39

bar

Gio

FIL

14

JUL

FIL LOW WATER PRESSURE

CHECK THE HTG SYSTEM

12 °C

The boiler is operating normally, but it is still recommended to fill the system in the way described in section “4.1 HOW TO TOP-UP THE SYSTEM PRESSURE” page 8.

temporary fault – E041

12

0.2

39

bar

Gio 14 JUL
E041

Low water pressure

12°C

12 System info

39
Gio

Screed heating hours

14 JUL

Flow probe

Return probe

Dhw probe

12°C Dhw set
Exhaust probe

1.2
bar 0 21°C 22°C 20°C 44°C 33°C

5.18 REPLACING THE GAS VALVE
After replacing the gas valve it is necessary to reset the value P1 (see photo) as follows:

The boiler is not working properly. Fill the system as described in the previous point; operation required within 10 minutes of the message appearing otherwise the anomaly becomes definitive (E040).

definitive fault – E040

12

0.2

39

bar

Gio

14

JUL
E040

Low water pressure

12°C

In the event of a permanent lockout, fill the system and then release the alarm.

Press to restore operation.
Once operation is restored, the boiler performs an automatic vent cycle.
b If the drop in pressure is very frequent, request the inter-
vention of the Technical Assistance Centre.

DHW PROBE fault (E060)
Indicates a possible configuration error; please contact Vokera Technical or the Service Centre for assistance.

PRIMARY HEAT-EXCHANGER CLEANING fault (E091) The boiler has an auto-diagnostic system which, based on the total number of hours in certain operating conditions, can signal the need to clean the primary heat exchanger. Once the cleaning operation has been completed with the cleaning kit supplied as an accessory, it is necessary to reset the total hours meter as follows:

12 39

Configuration

Gio Config aux 1 14 Not set

JUL Exhaust probe reset

1.2 12 Exhaust probe reset

1.2

bar 39

bar

Gio
14
JUL Proceed with reset of the hour counter of the flue gas probe?

12°C

12°C

OK

NOTE: The meter resetting procedure should be carried out after each in-depth cleaning of the primary exchanger or if this latter is replaced.
The fault occurs when the hour meter exceeds 2500 hours; this value can be verified as follows: access the “System Info” menu to display the value of the flue
gas probe meter (display/100, example 2500h = 25).

12 39

1.2 bar

1.2 12 Combustion bar 39

1.2
bar

Gio 14

Gio 14

Gas – gas type Methane

JUL

JUL D52 – p1 GAS VALVE

45

Boiler off

Gac

Antifreeze function
12°C

Apl – power
12°C 25 kW

12 Gac

1.2

39

bar

Gio 14 JUL

Perform full calibration?

12°C

OK

– using the arrows, enter the second and third digits of the value P1 (e.g. 034 becomes 34) shown on the gas valve present in the boiler (each gas valve has its own offset P1 value), confirm.
b Disconnect the boiler from the power supply for at
least 10 seconds; then reconnect to the mains power supply.
Once the replacement is complete, a new “GAC” procedure must be carried out (see section 5.9).
b If the gas valve is replaced, also replace the relative sealing
gaskets.
To tighten the gas valve ramp nut, apply a torque equal to 25 Nm, limiting the rotation of the valve.
5.19 REPLACING THE INTERFACE
System configuration operations must be carried out by professionally qualified personnel of the Technical Assistance Centre. If the interface card is replaced, the user may be asked to reset the time and day of the week values at power on (see section 5.7); also check and reset, if necessary, information on hourly heating and DHW programming (see section 8.1) and the Feeder Bottle function (see section 8.11); note that no reprogramming of the configuration parameters is necessary, the value of which is retrieved from the regulation and control board in the boiler. Instead, it may be necessary to reset the DHW and/or heating setpoint values.

28

5.20 BOARD REPLACEMENT
If case of the control board is replacement and adjustment procedure, it may be necessary to check the configuration parameters and possibly reconfigure them. Consult the parameter table to identify the board default values, the factory set values and the customized ones. The parameters to necessarily be checked and possibly reset are: GAS – GAS TYPE d52 – P1 GAS VALVE (with boiler

in OFF) APL – POWER HYDRAULIC CONFIGURATION WATER PRESSURE TRANSDUCER (SERVICE) MIN FAN SPEED MAX FAN SPEED MAX FAN SPEED HTG RANGE RATED. Disconnect the boiler from the power supply for at least 10 seconds; then reconnect to the mains power supply. Once the replacement is complete, perform a new “GAC” procedure must be carried out (see section 5.9).

ERROR CODE E010 E011 E012 E013 E014 E015 E020 E021 E030 E031 E032 E033 E034 E035 E036 E037 E038 E039 E040 E042 E071 E075 E081 E088 E090 E092 E093 E094 E097 E098 E099 E041 E050 E051 E052 E055 E056 E060 E070 E071 E072 E077 E080 E081 E082 E090 E091 E095 E096 FIL
pressure value
COM
E065
FWER
CFS SFS
OBCD
LLL CFG

ERROR MESSAGE MAXIMUM NUMBER OF IGNITION ATTEMPTS
PARASITIC FLAME MAXIMUM NUMBER OF FLAME LOSSES
SERIAL PROTOCOL FLAME DETECT TEST FAILED VOLTAGE DETECT FLAME TEST FAILED
LIMIT THERMOSTAT GAS VALVE CONTROL MALFUNCTION
FAN ERROR FAN FAILURE MECHANICAL BLOCKAGE
ROTOR FAN FAILURE BLOCKED ROTOR FAN FAILURE DAMAGED CHIMNEY OBSTRUCTION IN PREVENTILATION BLOCKAGE OBSTRUCTION FLUE GAS LOW POWER BLOCKAGE OBSTRUCTION FLUE GAS HIGH POWER FAILED COMBUSTION CHECK LOW POWER COMBUSTION CHECK FAILED HIGH POWER
ABNORMAL FLAME VALUE LOW WATER PRESSURE WATER TRANSDUCER – LWCO ERROR HEATING TEMPERATURE OVER LIMIT VALVE OPENING LIMIT REACHED RETURN TEMPERATURE OVER LIMIT
CAC FAILED EXHAUST PROBE ERROR
CALIBRATION FAILED TOO MANY CALIBRATION ATTEMPTS
LAMBDA OVER LIMIT Check FAILED GAC FAILED
RESET ATTEMPTS EXHAUSTED LOW WATER PRESSURE
SMOKE OBSTRUCTION ERROR LOW POWER SMOKE OBSTRUCTION ERROR HIGH POWER
HARDWARE ERROR OUT OF THRESHOLD NO CARD FAN COMMUNICATION
NO COMMUNICATION MICROPROCESSOR CARD CONFIGURATION ERROR CH PROBE ERROR
HEATING TEMPERATURE OVER LIMIT DELTA T RETURN OUT OF LIMIT
ABSENCE OF COMMUNICATION WITH LOW TEMPERATURE THERMOSTAT RETURN PROBE ERROR
RETURN TEMPERATURE OVER LIMIT WARNING DELTA TEMPERATURE EXHAUST PROBE ERROR CLEAN PRIMARY HT EXCHANGER CALIBRATION FAILED LAMBDA OVER LIMIT
LOW WATER PRESSURE CHECK THE HTG SYSTEM HIGH WATER PRESSURE CHECK THE HTG SYSTEM
APPLIANCE PCB COMMUNICATION LOST (more than 30 seconds)
IMOD ERROR
WARNING FIRMWARE VERSIONS NOT COMPATIBLE
CALL FOR SERVICE STOP FOR SERVICE
ON BOARD CLOCK DAMAGED
GENERIC FIRMWARE BLOCK GAC NOT EXECUTED

ERROR TYPE DESCRIPTION
DEFINITIVE
TRANSITORY
SIGNAL SIGNAL: (the boiler continues to operate
but with no display or keys) SIGNAL
SIGNAL: (the boiler continues to operate but with no display or keys) SIGNAL DEFINITIVE
SIGNAL: (the boiler continues to operate but with no display or keys) SIGNAL SIGNAL

29

6. MAINTENANCE AND CLEANING

Periodic maintenance is essential to the safety, efficiency and duration of the boiler. It allows for the reduction of consumption, polluting emissions and keeping the product safe and reliable over time. Before starting maintenance operations: turn off the fuel and water taps of the heating and domestic
hot water system. To ensure product characteristics and efficiency remain intact and to comply with current regulations, it is necessary to render the appliance to systematic checks at regular intervals. This normally means the following tasks: removing any oxidation from the burner removing any scale from the heat exchangers check the state of deterioration of the electrodes and, if they
have deteriorated, replace them together with their seals check and general cleaning of exhaust and intake pipes checking the external appearance of the boiler checking the ignition, switch-off and operation of the appli-
ance, in heating mode checking the seal on the couplings and the gas/water/conden-
sate connection pipes checking gas consumption at maximum and minimum output checking the integrity of the insulation of electrical cables, par-
ticularly in the vicinity of the primary heat exchanger checking the gas failure safety device checking and cleaning the siphon checking the cleanliness of the fan, internal extraction (includ-
ing the air filter when provided)
b checking there is water in the drain-trap; if not, fill it. The electronic board and the gas valve do not require a
b specific check aimed at evaluating aging and deterioration. When servicing the boiler, the use of protective clothing is
b recommended in order to avoid personal injury. After maintenance work has been carried out, an analysis of the combustion products must be carried out to check
b that they are functioning properly. Do not clean the appliance or its parts with inflammable
b substances (e.g. petrol, alcohol, etc.). Do not clean panels, painted parts and plastic parts with
b paint thinner. Panel cleaning must be carried out only with soapy water.
Cleaning the primary heat exchanger Switch off the electrical supply by turning the main system
switch OFF. Close the gas shut-off valve. Remove the casing as explained in section 4.5. Disconnect the connection cable of the ignition and detection
electrodes. Disconnect the power cables of the fan. Remove the clip securing the gas train from the mixer. Loosen the gas train nut. Extract the gas train from the mixer and rotate it. Remove the 4 nuts that secure the combustion unit. Remove the air/gas conveyor assembly including fan and
mixer, taking care not to damage the insulation panel and electrode. Remove the siphon connecting pipe from the condensate drain fitting of the heat exchanger and connect a temporary collecting pipe. At this point proceed with the heat exchanger cleaning operations. Vacuum out any dirt residue inside the heat exchanger, taking care NOT to damage the retarder insulating panel.
b Clean the coils of the heat exchanger with a soft bristled brush. DO NOT USE METAL BRUSHES THAT COULD DAMAGE THE COMPONENTS.
Clean the spaces between the coils using a 0.4 mm thick blade or similar.
Vacuum away any residue produced by the cleaning intervention. Rinse with water, taking care NOT to damage the retarder
insulating panel.
b If there are stubborn fuel gas deposits on the heat
exchanger surface, remove them by spraying with natural white vinegar, taking care NOT to damage the retarder insulating panel.

Leave it to work for a few minutes. Clean the coils of the heat exchanger with a soft bristled brush.
b DO NOT USE METAL BRUSHES THAT COULD DAMAGE
THE COMPONENTS.
Rinse with water, taking care NOT to damage the retarder insulating panel.
Make sure the retarder insulation panel is undamaged and replace it if necessary following the relative procedure.
After cleaning, carefully assemble the components again repeating the indications provided above but in the reverse order.
To tighten the fastening nuts of the air/gas conveyor assembly, use a tightening torque of 6 Nm, following the sequence indicated on the die-cast (1,2,3,4).
Turn the power and gas feeding to the boiler back on.
b It is necessary to carry out a new “GAR” procedure followed
b by the “GAC” procedure (see section 5.9). What is indicated is also valid in the case of replacement of the conveyor alone, the exchanger or the conveyor and exchanger assembly.
Cleaning the burner Switch off the electrical supply by turning the main system
switch OFF. Close the gas shut-off valve. Remove the casing as explained in section 4.5. Disconnect the connection cable of the ignition and detection
electrodes. Disconnect the power cables of the fan. Remove the clip securing the gas train from the mixer. Loosen the gas train nut. Extract the gas train from the mixer and rotate it. Remove the 4 nuts that secure the combustion unit. Remove the air/gas conveyor assembly including the fan
and mixer, taking care not to damage the insulating ceramic panel and the electrodes. At this point proceed with the burner cleaning operations. Clean the burner with a soft bristle brush, taking care not to damage the insulation panel and electrodes.
b DO NOT USE METAL BRUSHES THAT COULD DAMAGE
THE COMPONENTS.
Check that the burner insulating panel and the sealing gasket are undamaged and replace them if necessary, following the relative procedure.
After cleaning, carefully assemble the components again repeating the indications provided above but in the reverse order.
To close the fixing nuts of the air/gas conveyor assembly, use
a tightening torque of 6 Nm. Turn the power and gas feeding to the boiler back on.
b Carry out an analysis of the combustion products. Only if it
returns values outside of tolerance, it is necessary to repeat a
new “GAR” procedure followed by the “GAC” procedure (see
section 5.9).
b What is indicated is also valid in the case of replacement
of the conveyor alone, the exchanger or the conveyor and
exchanger assembly.
Replacing the burner insulating panel Loosen the screws holding the ignition/detection electrode,
and remove it. Remove the burner insulating panel by inserting a blade just
under the surface. Remove any residual fixing adhesive. Fit the new burner insulating panel. The new insulating panel does not need to be fixed with an
adhesive as its geometric form ensures perfect coupling with
the heat exchanger flange. Refit the ignition and detection electrodes using the screws
previously removed and replacing the relevant seal. To tighten
the screws, apply a torque of 2.3 Nm.
b Do not perform GAR and/or GAC.

30

Siphon check and cleaning

Cleaning the air filter

Disconnect the pipes (A – B), remove the clip (C) and remove

the drain-trap.

Clean the parts of the drain-trap to remove any solid residue.

b Carefully reposition the previously removed components.

b At the end of the cleaning sequence, fill the drain-trap with

A

b water (see section 5.7) before re-starting the boiler. Do not perform GAR and/or GAC.

b What is indicated also applies in the case of replacing the

siphon.

B A
C
Ignition and detection electrodes The ignition and detection/ionization sensor electrodes perform an important function in the boiler ignition phase and in maintaining correct combustion; in this regard, during annual maintenance, it is necessary to always check that they are correctly positioned and that the reference dimensions indicated in the figure are strictly respected.

Unscrew the fixing screw A and extract the air filter. Blow compressed air over the filter to remove any impuri-
ties. In the event of persistent dirt, wash with water.
b It is necessary to carry out a new “GAR” procedure follo-
wed by the “GAC” procedure (see section 5.9).
Board replacement The control and regulation board does not provide a specific
procedure for verifying its deterioration. In case of replacement, refer to section 5.21.
Interface board replacement The interface board does not provide a specific procedure
for verifying its deterioration. In case of replacement, refer to section 5.20.
Gas valve replacement The gas valve does not provide a specific procedure for
checking its deterioration. In case of replacement, refer to section 5.19. The gas valve does not provide a specific cleaning procedure.

a Do not sand the electrodes. If the electrodes need to be
cleaned, dust them using a soft bristle brush.
b In the event of deformation and deterioration of the elec-
trodes outside the tolerances, replace them.
To tighten the screws, apply a torque of 2.3 Nm.
b In order to prevent potential operating anomalies, the ignition
and detection/ionisation sensor electrodes must be replaced
b every 5 years. It is necessary to carry out a new “GAR” procedure followed by the “GAC” procedure (see section 5.9).

31

7. PASSWORD SETTING FOR ACCESSING AND CHANGING PARAMETERS IN THE TECHNICAL MENU
In the manual, follow the procedure described whenever a password needs to be entered in order to access parameters:

12 39

1.2 bar

1.2
bar

Gio

45 14

°C

JUL

.5

52 °C .5

Heating

Hot water

12°C

42.5°C

49.5°C

12 Menu 39 Technical menu
Gio Blocked 14 JUL
12°C

1.2

12 Security password

1.2

bar

39

bar

Gio

14

JUL 0 0 0 0

12°C

OK

7.1 PROGRAMMABLE PARAMETERS
Below is a list and description of the programmable parameters: USER (always available) and INSTALLER (access with psw 18): set the password as indicated in the previous chapter.

b Some of the information and functions indicated be-
low may not be available depending on the access
level, status and type of machine or system configuration.

LEVEL PASSWORD

USER (always available) INSTALLER (psw 18)
SERVICE

USER X

WHICH PARAMETERS ARE VISIBLE/ACCESSIBLE

INSTALLER

SERVICE

X

X

X

X

X

USER MENU (access level USER)

12 39
Gio 14 JUL
12°C

Menu
Domestic water 52°C
Heating circuit 45°C
Boiler mode Winter
System info

1.2 12 Menu

bar 39 Comfort functions

Gio Preheat

14 JUL

Biberon Off

Guided tour On/active

Hourly scheduling
12°C On

1.2 12 bar 39
Gio 14

Menu
Time and date 12:39 thu 14 jul

JUL Screen lock

Off

Buzzer On/active

12°C

Language English

1.2 12 Menu

1.2

bar 39 Technical menu

bar

Gio Blocked

14

JUL

12°C

Domestic Hot Water

DHW Temperature: to set the DHW temperature (for more details please refer to “Heating and DHW setpoint setting”). NOT AVAILABLE ON THIS MODEL.

Heating Circuit

Heating Circuit Temperature: to set the temperature of the heating circuit (for more details please refer to “Heating and DHW setpoint setting”).

Boiler Mode

Boiler Mode: to set the boiler operating mode (for more details please refer to “Operating mode”).

System Info

Menu Info: to consult the system info (for more details please refer to “INFO Menu”).

Comfort Functions

Comfort Functions: to enable/disable comfort functions (for more details please refer to “Comfort Functions”). NOT AVAILABLE ON THIS MODEL.

Biberon Function

Biberon function: to enable/disable the bottle function (for more details please refer to “Feeder Bottle Function”). NOT AVAILABLE ON THIS MODEL.

Guided tour

Guided tour: to access the guided tour (for more details please refer to “GUIDED TOUR”).

Timer Programming

Timer Programming: to set the TIMER PROGRAMMING, when enabled.

Time and Date

Time and Date: to set TIME AND DAY (for more details please refer to “INSTRUCTIONS FOR USE”).

Key Lock

Key and Screen Lock: to lock/unlock keys and touch screen (for more details please refer to section “Keypad lock function”).

Buzzer

Buzzer: to enable/disable the buzzer (for more details please refer to “INSTRUCTIONS FOR USE”).

Factory setting = active

Language

Language: to set the desired language (for more details please refer to “INSTRUCTIONS FOR USE”).

Units of Measurement

Units of Measurement: to change the unit of measurement. NOT CURRENTLY AVAILABLE.

32

TECHNICAL MENU (access level INSTALLER)

12 Technical menu

1.2 12 Technical menu

1.2

39

bar 39

bar

Gio Guided tour

Gio Service

14

14

JUL Combustion

JUL Connectivity

Configuration

Heating

12°C

12°C

Dhw

Combustion

:

– GAS – GAS TYPE: parameter identifying the type of gas: Methane LPG Gas 3 Gas 4.

Factory setting = Methane

– d52 – P1 GAS VALVE: parameter for resetting the P1 value of the gas valve.

Factory setting = 45

– GAC – VALVE CALIBRATION: parameter used to calibrate the gas valve and combustion control system.

– APL – POWER: parameter used to set the boiler output: 25kW – 35kW.

Factory setting = 25kW

Configuration

:

– HYDRAULIC CONFIGURATION: to set the hydraulic configuration of the boiler: Heating only – Instantaneous with Flow switch – Instantaneous with Flow meter – Storage Cylinder with probe –

Storage Cylinder with Thermostat.

Factory setting = Heating only, do not modify. When replacing the circuit board, make sure that this parameter is set to Heating only.

– MIN FAN SPEED: to change the minimum fan speed.

Factory setting = see technical data table.

– MAX FAN SPEED: to change the maximum rpm of the fan.

Factory setting = see technical data table.

– MAX FAN SPEED HTG: to vary the maximum heating fan speed (this can be programmed within the minimum fan speed range – maximum fan speed).

Factory setting = see technical data table.

– Range Rated: RANGE RATED adjustment. DO NOT CHANGE.

– CONFIG AUX 1: to configure the operation of an additional relay (only if BE09 board is installed (accessory kit)) to feed a phase (230Vac) to a second heating pump (additional pump) or a zone

valve. It is to choose how to programme operation by choosing between: This depends on the wiring configuration of the BE09 board: cut jumper: additional pump – jumper present: zone valve

(factory setting) zone valve management additional pump management.

Factory setting = function not enabled.

– EXHAUST PROBE RESET: allows the operating hours counter to be reset under certain conditions (for more details please refer to “Warning signals and faults”, fault E091).

Factory setting = function not enabled.

Heating

:

– PUMP CONTROL TYPE: proportional variable speed pump.

Factory setting = 85.

– OT CASCADE CONTROL: allows the boiler to be set up for cascade applications via OT+ signal. NOT APPLICABLE TO THIS BOILER MODEL.

– SCREED FUNCTION: enables/disables the screed heater function (for more details please refer to “Screed heater function”).

Factory setting = function not enabled.

– ANTI CYCLE FUNCTION: allows the forced heating off time to be modified. This relates to the delay time introduced for re-ignition of the burner when the burner is switched off due to having

reached the heating temperature.

Factory setting = 3 minutes and can be set to a value between 0 min and 30 min.

– RESET CH TIMERS: Allows you to cancel the function HEATING RESET TIMING and REDUCED HEATING MAXIMUM OUTPUT, during which the fan speed is limited between the minimum

value and 60% of the set maximum heating power, with an increase of 10% every 15 minutes.

Factory setting = function not enabled.

– TYPE OF HEATING: allows you to specify the type of zone to be heated, choosing from the following options: HIGH TEMPERATURE LOW TEMPERATURE.

Factory setting = HIGH TEMPERATURE

– MAX TEMP: allows the maximum heating setpoint value to be specified: range 20°C – 80°C, default 80°C for high temperature systems range 20°C – 45°C, default 45°C for low temperature

systems. Note: The maximum heating setpoint value cannot be smaller than the minimum heating setpoint value.

– MIN TEMP: with this parameter you can specify the minimum settable heating setpoint: range 20°C – 80°C, default 40°C for high temperature systems range 20°C – 45°C, default 20°C for

low temperature systems. Note: The minimum heating setpoint value cannot be greater than the maximum heating setpoint value.

– THERMOREGULATION: enables thermoregulation when an outdoor temperature sensor is connected to the system.

Factory setting = function not active, the boiler always operates at fixed point. With the outdoor temperature sensor disconnected, the boiler works at a fixed setpoint. For more details, please

refer to the section ‘Setting the thermoregulation.

– HOURLY SCHEDULING: enables hourly heating programming.

Factory setting = DISABLE.

– MANUAL FORCING DURATION: with time programming enabled, this parameter allows you to set the switching mode from manual to automatic heating operating mode. The transition from

manual to automatic time programming occurs automatically at the first time slot change.

DHW

:

– ANTI LEGIONELLA FUNCTION: function linked to the availability of a storage cylinder. NOT AVAILABLE ON THIS MODEL.

– ANTI LEG. DELAY: function related to the availability of a storage cylinder. NOT AVAILABLE ON THIS MODEL.

– SUPPLY TEMPERATURE: function linked to the availability of a storage cylinder. NOT AVAILABLE ON THIS MODEL.

– TANK HYSTERESIS ON: function related to the availability of a storage cylinder. NOT AVAILABLE ON THIS MODEL.

– TANK HYSTERESIS OFF: function related to the availability of a storage cylinder. NOT AVAILABLE ON THIS MODEL.

– TANK FLOW TEMP : function related to the availability of a storage cylinder. NOT AVAILABLE ON THIS MODEL.

– MODULATING TANK SUPPLY TEMP: function related to the availability of a storage cylinder. NOT AVAILABLE ON THIS MODEL.

– MIN TEMP: to set the minimum DHW setpoint.

Factory setting = 37°C

– MAX TEMP: to set the maximum DHW setpoint.

Factory setting = 60°C.

– SPECIAL FUNCTIONS: to enable the special DHW functions. NOT AVAILABLE ON THIS MODEL.

Service

:

– CHIMNEY SWEEP: to carry out combustion analysis, only with the boiler in the OFF position. For more details, please refer to the section ‘Combustion control’.

33

TECHNICAL MENU (access level SERVICE)

12 Technical menu

1.2 12 Technical menu

1.2

39

bar 39

bar

Gio Guided tour

Gio Service

14

14

JUL Combustion

JUL Connectivity

Configuration

Heating

12°C

12°C

Dhw

Configuration

:

– WATER PRESSURE TRANSDUCER: to set the water pressure transducer type: water pressure switch – pressure transducer.

Factory setting = pressure transducer, do not modify. When replacing the circuit board, make sure that this parameter is set to ‘pressure transducer’.

– AUTO-FILL ENABLE: to enable the ‘semi-automatic filling’ function when a pressure transducer and a solenoid valve are installed in the boiler. NOT AVAILABLE ON THIS MODEL.

– BEGIN SYSTEM FILLING: only appears if ‘Semi-automatic filling’ is enabled. NOT AVAILABLE ON THIS MODEL.

– AIR PURGING CYCLE: to disable the vent cycle function.

Factory setting = “function enabled”. For more details, please refer to the section ‘Vent Cycle’.

Heating

:

– HYST ON HIGH TEMP: for high temperature systems, this parameter allows you to set the hysteresis value used by the control board to calculate the burner ignition delivery temperature: IGNITION

TEMPERATURE = HEATING SETPOINT – Hysteresis ON High temp.

Factory setting = 5°C, can be changed in the range 2°C- 10°C.

– HYST OFF HIGH TEMP : for high temperature systems, this parameter allows you to set the hysteresis value used by the control board to calculate the burner shutdown delivery temperature:

SWITCH-OFF TEMPERATURE = HEATING SETPOINT + Hysteresis OFF High temp.

Factory setting = 5°C, can be changed in the range 2°C- 10°C.

– HYST ON LOW TEMP: for low temperature systems, this parameter allows you to set the hysteresis value used by the control board to calculate the burner ignition delivery temperature: IGNITION

TEMPERATURE = HEATING SETPOINT – Hysteresis ON Low temp.

Factory setting = 3°C, can be changed in the range 2°C- 10°C.

– HYST OFF LOW TEMP: for low-temperature systems, this parameter allows you to set the hysteresis value used by the control board to calculate the burner shutdown delivery temperature:

SWITCH-OFF TEMPERATURE = HEATING SETPOINT + Hysteresis OFF Low temp.

Factory setting = 3°C, can be changed in the range 2°C- 10°C.

DHW

:

– DHW DELAY: through this parameter a delay in seconds is introduced on the activation of the pump and fan when there is a DHW request. NOT AVAILABLE ON THIS MODEL.

Factory setting = function not enabled.

– POST-CIRCULATION: through this parameter it is possible to enable/disable the DHW post-circulation function with heating start inhibition. When this function is active, it is it is possible to set

the duration of DHW post-circulation. NOT AVAILABLE ON THIS MODEL.

Factory setting = function not enabled.

Service

:

– ALARM HISTORY: to activate the storage of an alarm history.

Factory setting = function not enabled; the parameter is automatically enabled after 2 hours of operation. Disabling the parameter resets the alarm history. Please refer to the section ‘Alarm

History’ for more details.

– CALL SERVICE: this parameter allows periodic control of the boiler according to a pre-set operating period. With function enabled (factory setting) it is possible to set:

– “Call for service” (factory setting): the display shows CFS signalling without any operating stops. In this condition, the INFO menu displays the number of days that have elapsed since the

CFS alert appeared. The CFS signal occurs at 10 minute intervals for a duration of 1 minute, 1 month before the end of the period set in the parameter “Service expiry”

– “Stop for service”: the display shows the SFS signal indicating the permanent inhibition of all heating and DHW heat requests. Cannot be reset.

– “Service expiry”: pre-set period of operation for the service call. Factory setting: 52 weeks

– HIGH EFFICIENCY ENABLE: automatic function which activates when first powered on or after 60 days of non-use (boiler electrically powered). In this mode the boiler, for 60 minutes, limits

the power in heating to a minimum and the maximum temperature in DHW to 55°C. Activating the chimney sweep temporarily disables this function.

Factory setting = function not enabled. For more details, please refer to the section ‘Condensate trap filling – High efficiency mode’.

– CONTACT SERVICE: through this parameter you can enter the data of the Technical Assistance Centre.

Connectivity

:

– BUS 485 CONFIG: this parameter is used to enable remote boiler management. Three values are available:

– Wi-Fi key: management from boiler interface and APP if Wi-Fi key present (FACTORY SETTING)

– Ignore Wi-Fi key: management from boiler interface ONLY

– Modbus remote control: management from boiler interface and system manager (T300)

– OT CONFIG: this parameter is used to enable/disable the possibility of remote control of the boiler via an OpenTherm device.

Factory setting = function enabled.

34

7.2 INFO MENU
b If no buttons are pressed, after 120 sec, the interface automatically exits the `System Info’ menu.

12 Menu

1.2

39

bar

Gio 14

Domestic water 52°C

JUL Heating circuit

45°C

Boiler mode Winter

System info
12°C

12 System info

39
Gio

Screed heating hours

14 JUL

Flow probe

Return probe

0 21°C

1.2 12 bar 39
Gio 14 JUL

22°C

System info
Oat Filtered oat Dhw flow rate

1.2 12 System info

3°C

bar 39
Gio

Ot main zone set

1°C

14 JUL

Water pressure

0.0

Dhw hour

1.2 12

—

bar 39
Gio

1.0bar

14 JUL

1

System info
Ch supply avg Dhw supply avg Ch return avg

Dhw probe

20°C

Fan revolutions

0

Ch hour

2

Dhw return avg

12°C Dhw set

44°C

Exhaust probe

33°C

12 System info

39
Gio

Comfort

14 JUL

Sun on

Pcb id

12°C Exhaust hours

0

Main zone set

72

1.2 12

0

bar 39
Gio

0

14 JUL

GP02

System info
Alarm 1 Alarm 2 Alarm 3

12°C Dhw modulation

98%

Ch modulation

40%

1.2 12

E040

bar

39
Gio

E041

14 JUL

E077

System info
Next legionella Rsc Rs

12°C Evg on cycles
High efficiency
1.2
bar 0 1289 8

Pcb fw

7

Alarm 4

E010

Rss

1260

12°C Interface fw

2.1.76

12°C Alarm 5

E077

12°C Rf

104

Radio signal

0

Clean exchanger

0

1.2
bar 28°C 45°C 21°C 34°C 21 0

INFO NAME

DESCRIPTION (only info related to the model configuration will be displayed)

SCREED HEATING HOURS

Number of hours spent with screed heater function (when in progress)

FLOW PROBE

Boiler flow sensor value

RETURN PROBE

Boiler return temperature sensor value

DHW PROBE

NOT AVAILABLE ON THIS MODEL

DHW SET

NOT AVAILABLE ON THIS MODEL

EXHAUST PROBE

Flue gas probe value

OUTDOOR TEMP PROBE

Instantaneous outdoor temperature sensor value

FILTERED OUTDOOR TEMP

Filtered outdoor temperature sensor value used in the temperature control algorithm to calculate the heating setpoint

DHW FLOW RATE

NOT AVAILABLE ON THIS MODEL

FAN SPEED

Number of fan rotations (rpm)

EXHAUST PROBE HOURS

Number of operating hours of the heat exchanger in “condensing mode” (the values are expressed in hundreds of hours, example: 01 = 100h)

MAIN ZONE SET

Main zone delivery setpoint

OT MAIN ZONE SET

Main zone delivery setpoint from OT+

WATER PRESSURE

System pressure

DHW HOUR

NOT AVAILABLE ON THIS MODEL

CH HOUR

Hours with burner on

References

• Vokera|Vokèra by Riello
• Vokera – Viridus Energy
• Home — Benchmark
• centralheating.co.uk
• hhic.co.uk
• Vokera|Vokèra by Riello
• Vokera – Viridus Energy

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