nuaire BPS-ECO-HP07 Air Handing Unit User Manual

BPS HP-CO
Boxer Packaged Solution with Heat Pump
Service Manual

SAFETY PRECAUTIONS

Before servicing or carrying out repairs to the unit, make sure you read all the “Safety precautions”.
1.1 Hazard Symbols
Warning: Describes precautions that should be observed to prevent danger of injury or death to the user.
Caution: Describes precautions that should be observed to prevent damage to the unit.
1.2 Important Information
Warning:

• Carefully read the labels affixed to the main unit.
• Only a trained and qualified technician should carry out repair and service work on this unit.
• EN378-4 specifies that anyone working on flammable refrigerants systems should receive training which includes the following:
  Knowledge of legislation, regulation and standards relating to flammable refrigerants;
  Detailed knowledge of and skill in handling flammable refrigerants, personal protective equipment, refrigerant leakage prevention, handling of cylinders, charging, leak detection, recovery and disposal.
• Improper service or repair by the user /other may result in, electric shock, fire, explosion or water leakage.
• Any copper tube used to replace refrigerant piping shall be seamless copper tube of Type ACR (hard or annealed) complying with sound engineering practice of PED/PE(S)R.
• Use the specified cables for wiring. Make the connections securely so that any outside forces acting on the cables are not applied to the terminals. Inadequate connection and fastening may generate heat and cause a fire.
• Never repair the unit with unspecified parts always use approved Nuaire parts. If the unit is repaired improperly, electric shock, explosion or fire may result.
• When handling this product, always wear protective equipment e.g. Gloves, full arm protection namely boiler suit, and safety glasses. Improper handling may result in injury.
• If the pressure switch, thermal switch, or other protection device is shorted or operated forcibly, or parts other than those specified by Nuaire are used, fire or explosion may result.

1.2.1 Tools & Equipment
Warning:

• Tools should be rated for use in a Zone 2 area or have been suitably tested for use with flammable refrigerants. Type ‘n’ protection according to EN60079-15 is deemed as suitable for this application. This is not intrinsic safety.
• A flammable gas detector should be used to monitor the air in the work area. If an electronic leak detector is used it must be safe and sensitive to the flammable refrigerant.
• Refrigerant recovery machines must be assessed for use with flammable refrigerants. Approval must be sought from the manufacturer before using a standard HFC recovery machine with any flammable refrigerant.
• More accurate scales are necessary when charging small, critical charged systems with some flammable refrigerants An accuracy of ±5 g is often necessary.
• A dry powder or CO2 fire extinguisher must be available at the location.
• A suitable ventilation fan should be used when working inside if there is insufficient natural ventilation. Procedures The work area must be well ventilated with no source of ignition within 3 m of the system and the service equipment such as a vacuum pump and recovery machine.
• The vacuum pump should be controlled by a switch outside the 3m zone (the vacuum pump’s switch should not be used as it is a source of ignition) and the pump should be located in a well-ventilated area. Prior to un brazing joints the flammable refrigerant must be removed from the system, and the system filled with nitrogen. Faulty electrical devices and compressors must be replaced with like for like components.
• To dispose of this product, consult your dealer. Do not use a leak detection additive.

1.2.2 Before Service
Caution:

• Do not install the unit where combustible gas may leak and keep away from any fire source.
• If the gas leaks and accumulates around the unit, an explosion may result.
• Ground the unit. Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground lines. Improper grounding may result in electric shock.
• Install the power cable so that tension is not applied to the cable. Tension may cause the cable to break and generate heat which may, in turn, cause fire.
• Install a leak circuit breaker, as required. If a leak circuit breaker is not installed, electric shock may result.
• Use power line cables of sufficient current carrying capacity and rating. Cables that are too small may leak, generate heat, and cause a fire.
• Use only a circuit breaker and fuse of the specified capacity. A fuse or circuit breaker of a larger capacity or a steel or copper wire may result in a general unit failure or fire.
• Be very careful regarding product transportation. Two people should be used to carry products of 20kg or more.

1.2.3 Before Testing
Caution:

• Do not touch the switches with wet fingers. Touching a switch with wet fingers can cause electric shock.
• Do not touch the refrigerant pipes during and immediately after operation. During and immediately after operation, the refrigerant pipes may be hot or cold, depending on the condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant cycle parts. Your hands may suffer burns or frostbite if you touch the refrigerant pipes.
• Do not operate the air handling unit or heat pumps with the panels / guards removed. Rotating, hot, or high-voltage parts can cause injuries. •Do not turn off the power immediately after stopping operation. Always wait at least five minutes before turning off the power. Otherwise, water leakage and other problems may occur.

1.2.4 Overview Of Service
Warning:

• Systems should be serviced and maintained following good refrigeration practice, with some changes to tools, equipment and procedures.
• Engineers working on flammable gas system should be appropriately trained.

1.2.5 Disclaimer
Warranty: This product manufactured by Nuaire is warranted against defective materials for a period of 5 years from the date of delivery to the original purchaser.
Warning: Nuaire assumes no liability for damages consequent to the user of this product. We reserve the right to change this manual at any time without notice. The information furnished by us is believed to be accurate and reliable. However, no responsibility is assumed by us for its use, nor for any infringements of patents or other rights of third parties resulting from its use.

1.3 Personal Protective Equipment
The following minimum Personal Protective Equipment (PPE) is recommended when interacting with Nuaire product:

• Protective Steel Toed Shoes – when handling heavy objects.
• Full Finger Gloves (Marigold PU800 or equivalent) – when handling sheet metal components.
• Semi Fingerless Gloves (Marigold PU3000 3DO or equivalent) – when conducting light work on the unit requiring tactile dexterity.
• Safety Glasses – when conducting any cleaning/cutting operation or exchanging filters.
• Reusable Half Mask Respirators – when replacing filters which have been in contact with normal room or environmental air.

Nuaire would always recommend a site specific risk assessment by a competent person to determine if any additional PPE is required.

UNIT DIMENSIONS

2.1 BPS-ECO-HP07 2.2 BPS-ECO-HP12 BPS-ECO-HP17

SYSTEM OPERATION

The BPS-Eco internal heat pump is a twin compressor DX R32 heat pump system, designed to recover heat from the extracted air.
Each system will run independently, giving back up in case one system should fail, each system is controlled by a c.pco plc. Each controller communicates via Ethernet, so back up / run and duty share is all possible.
In the event of any faults on the lead system the other system will take up the primary operation. Fault codes are displayed on both controllers but does not prevent the health system from operating. A list of all fault codes can be found on page 26 > 38.
The heat pump will operate from a 0 >10 volt signal from the BPS Connect controller housed in main BPS control panel, the 0 >10 volt signal is dependant of the air supply temperature set point, set on the controller. The controller will also send a cooling or heating volt free signal to the C.pco heat pump controllers.
This signal will energise the reversing valve coil when cooling is required.
Two R32 refrigerant gas detectors are factory installed, one in the compressor section and the other in the supply coil section.
In the unlikely event of a refrigerant gas leak when the AHU is not in operation, either one of these sensors will start both extract and supply fans in boost mode.
Each sensor should be checked and serviced every 12 months, details of the sensors can be found in Section “6.0 R32 GAS DETECTORS” on page 30.
For further information on testing or servicing and to ensure safe operation of the heat pump systems gas detection please contact Nuaire after sales department.

3.1 System Information
3.1.1 BPS-ECO-HP07

3.1.2 BPS-ECO-HP12

3.1.3 BPS-ECO-HP17

3.2 Piping Schematics
3.2.1 BPS-ECO-HP07

KEY

3.2.2 BPS-ECO-HP12

KEY

3.2.3 BPS-ECO-HP17

KEY

3.3 Compressor Components

3.4 Heat Pump Control Panel Layout

3.5 Wiring Schematics
3.5.1 Condensate & Refrigerant Gas Detection
9 Condensate & Refrigerant Gas Detection Wiring

Key:
Internal Factory Connection
EEV 1: Electronic expansion valve sys 1.
EEV 2: Electronic expansion valve sys 2.
T1/T3: Discharge temperature sensor.
T2/T4: suction Temperature sensors.
T5/T6: Temperature after thermal wheel (extract) defrost control.
T7/T8: Compressor shell temperature sensors.
P1/P3: High pressure sensors.
P2/P4: Low pressure Sensors. overload switches.
HP1/HP2: High pressure switches.
$1: System 1 by-pass solenoid valve 24vac coil.
$2: System 2 by-pass solenoid valve 24vac coil.
RV1: System 1 Reverse cycle valve 24vac coil.
RV2: System 2 Reverse cycle valve 24vac coil.
F-1 : Heat pump panel Fuse 1.5A 3.5.2 Heat Pump Controllers 3.5.3 Mains Power & Inverter

CONTROLS

4.1 Controller Layout

+5V Power Supply For Ratiometric Probes
7| Relay Digital Outputs
8| External Terminal Or BMS Or Fieldbus Connector
+Vterm: Terminal Power Supply
9| FieldBus Connector
10| CANBus Connector
11| CANBus Communication LED
12| Faston For Ethernet Earth Connection
13| Ethernet Connection
14| Micro USB Port
15| Power Supply LED
16| Antenna NFC

4.2 Home Page Layout

if turned off, SHUT DOWN if turning off or START UP if turning on.
B| Suction Pressure
C| Discharge Pressure
D| External Operation Signal (0-10VDC)
E| Compressor Speed Output (0-100%)
F| Quick Menu (Info or On/Off)
1| Alarm Summary Button (Flashes Red In Alarm)
2| Menu Button (Takes User To Menu)
3| Return Button (Returns User To Previous Or Home Menu)
4| Up Button (Navigates UP Page In a Loop, Or Increases A Parameters Value)
5| Enter Button (Confirms Selection Or Enters Quick Menu Selected)
6| Down Button (Navigates DOWN Page In a Loop, Or Decreases A Parameters Value)

4.3 Quick Menu On/Off
Pressing ‘ENTER’ when the quick menu On/Off symbol is shown will take the user to the relevant menu as stated below.
If Off, pressing ‘ENTER’ will turn on the system. A Countdown is displayed.
If On, pressing ‘ENTER’ will turn off the system. A Countdown is displayed. 4.4 Quick Menu Information / Compressor Summary
Pressing ‘ENTER’ when the quick menu Information symbol is shown will take the user to the compressor summary. 4.4.1 Compressor Summary Layout

4.4.2 Compressor Envelope
Exact envelope is compressor dependent. 4.4.3 Compressor Envelope Explanation

4.4.4 Compressor Zone Explanation

4.4.5 Electronic Expansion Valve (EEV) Summary Layout

4.5 Quick Menu Exit
Quick menus are exited by pressing ‘ESCAPE’ once to return to
the home screen.
4.6 Menu
4.6.1 Login
To access inputs and outputs, press ‘PROGRAM’. Press ‘ENTER’ 4 times to key in password “0000”, allowing user access and displaying the user menu. 4.6.2 W In/Out
Press DOWN once so W. In/Out is selected and press ‘ENTER’ to access the menu. The W. In/Out menu displays all Inputs & Outputs (I/O) in order.
Press ‘UP’ or ‘DOWN’ to navigate through the menu loop. Press ‘RETURN’ twice to return to homepage.

4.7 Alarm Code List

•Check connections and probe.
2| | Auto Reset| A03 – Discharge
Temperature Probe
Not Working| Discharge temperature sensor (U1) not reading.
•Check connections and probe.
9| | User Reset| A10 – High Discharge
Pressure Switch| High discharge pressure switch (ID1) triggered because maximum discharge pressure was exceeded.
•Check fans are running and that the unit temperature limits have not been exceeded.
15| | User Reset| A16 – EVD – Low SH| Low superheat alarm.
•Check refrigerant charge.
•Check fans are running.
•Check valve operation.
16| | User Reset| A17 – EVD – Motor Error| Whenever the valve is powered a valve motor error recognition procedure is initiated.
•Check valve motor connections.
•Check and possibly replace stator coil.
17| | Auto Reset| A18 – EVD – Setting
Out Of Bound| EEV driver settings are set outside of allowed limits.
•Check EEV parameters.
•Reload defaults to reset if necessary.
18| | Auto Reset| A19 – Settings Range Error| EEV driver settings are set outside of allowed limits.
•Check EEV parameters.
•Reload defaults to reset if necessary.
19| | Auto Reset| A20 – Inverter Offline| Power+ drive has detected a current supplied that is too high due to:
-Sudden strong load increase.
-Acceleration that is too high.
-Wrong parameter values or inadequate motor.
•Check load and dimensions of motor and cables.
•Check inverter address is set to 1 and Baud rate is set to 19200.
20| | Auto Reset| A21 – Inverter – Drive
Overcurrent (01)| Power+ drive has detected a current supplied that is too high due to:
-Sudden strong load increase.
-Acceleration that is too high.
-Wrong parameter values or inadequate motor.
•Check load and dimensions of motor and cables.
•Decrease acceleration.
•Check motor parameters.
21| | Auto Reset| A22 – Inverter – Motor
Overload (02)| Current supplied has exceeded motor rated current over the maximum accepted time.
•Check load and dimensions of motor and cables.
•Check motor parameters.
22| | Auto Reset| A23 – Inverter – DC
Bus Overvoltage (03)| DC overvoltage of intermediate circuit has exceeded limits envisioned due to:
-Deceleration that is too high.
-High overvoltage peaks on power supply network.
•Decrease deceleration.
23| | Auto Reset| A24 Inverter – DC Bus
Undervoltage (04)| DC overvoltage of intermediate circuit is below limits envisioned due to:
-Insufficient power supply voltage.
-Fault inside drive.
•In event of temporary power supply outage, reset alarm and restart drive. Check power supply voltage.
24| | Auto Reset| A25 Inverter – Drive
Overtemperature (05)| Temperature inside drive has exceeded maximum allowed.
•Check that quantity and flow of cooling air are regular.
•Check environment temperature.
•Ensure switching frequency is not too high with respect to environment temperature and motor load.
25| | Auto Reset| A26 Inverter – Drive
Undertemperature (06)| Temperature inside drive is below minimum level allowed.
•Warm up ambient where drive is installed.
26| | Auto Reset| A27 – Inverter – HW
Overcurrent (07)| Drive has detected an instantaneous current supplied is too high due to:
-Sudden strong load increase.
-Motor cables short circuit.
-Wrong parameter values or inadequate motor.
•Check load and dimensions of motor and cables.
•Check motor parameters.
27| | Auto Reset| A28 – Inverter
– PTC Motor
Overtemperature (08)| Temperature detected by PTC thermistor corresponds to resistance > 2600 ohm.
•Reduce motor load.
•Check motor cooling.
29| | Auto Reset| A30 – Inverter – CPU
Error (10)| Loss of memory data.
•Critical failure, replace Power+.
30| | Auto Reset| A31 – Inverter –
Parameter Default (11)| Execution of reset parameter default command; Parameters user setting corrupted.
•Reset parameters using Default Parameters procedure.
31| | Auto Reset| A32 – Inverter – DC
Bus Ripple (12)| Input power supply phase loss.
•Check input power supply phases to drive.
32| | Auto Reset| A33 – Inverter – Data
Communication Fault (13)| Data reception failure.
•Check serial connection.
•Switch drive off and back on again.
33| | Auto Reset| A34 – Inverter – Drive
Thermistor Fault (14)| Internal Fault
•Call for assistance.
34| | Auto Reset| A35 – Inverter –
Autotuning Fault (15)| Wrong parameter values.
•Check parameter values.
•Restart command again.
35| | Auto Reset| A36 – Inverter – Drive
Disabled (16)| •Check cable disconnected.
•Check operation of external contactor.
•Check 24V power supply loss.
•Check wiring.
•Restore external contactor.
36| | Auto Reset| A37 – Inverter – Motor
Phase Fault (17)| •Motor cable disconnected.
•Check motor cable connections.
37| | Auto Reset| A38 – Inverter –
Internal Fan Fault (18)| Internal Fault.
•Call for assistance.
38| | Auto Reset| A39 – Inverter – Speed
Fault (19)| Wrong Parameter values or unsuited load.
•Switch drive off and back on again and check parameters.
•Check motor load.
39| | Auto Reset| A40 – Inverter – PFC
Module Error (20)| PFC overcurrent.
•Call for assistance.
40| | Auto Reset| A41 – Inverter – PFC
Overvoltage (21)| Too high power supply voltage.
•Check input power supply and inductive load generating voltage are connected to line.
41| | Auto Reset| A42 – Inverter – PFC
Undervoltage (22)| Too low power supply voltage.
•Check input power supply.
42| | Auto Reset| A43 – Inverter – STO
Detection Error (23)| Internal Fault.
•Call for assistance.
43| | Auto Reset| A44 – Inverter – STO
Detection Error (24)| Internal Fault.
•Call for assistance.
44| | Auto Reset| A45 – Inverter –
Ground Fault (25)| Drive detected too high ground current.
•Check ground insulation of motor and wires.
45| | Auto Reset| A46 – Inverter – ADC
Conversion Sync Fault
(26)| Overload CPU
•Call for assistance.
46| | Auto Reset| A47 – Inverter – HW
Sync Fault (27)| Hardware synchronisation fault.
•Call for assistance.
47| | Auto Reset| A48 – Inverter – Drive
Overload (28)| Current supplied exceeded drive rated current over maximum time accepted.
•Check load and dimensions of motor and cables.
•Check motor parameters.
48| | Auto Reset| A49 – Inverter – Drive
Overtemperature (HW) (29)| Temperature inside drive has exceeded maximum allowed.
•Check that quantity and flow of cooling air are regular.
•Check heat sink is free of dust.
•Check environment temperature.
•Ensure switching frequency is not too high with respect to environment temperature and motor load.
49| | Auto Reset| A50 – Unexpected
Stop (99)| Unexpected Stop.
•Check connections, restart system.
•If is persists – This is a critical fault.
50| | User Reset| A51 – BLDC – Starting
Failure| BLDC failed on start.
•Check compressor windings.
•Check inverter wiring.
59| | Auto Reset| A60 – Discharge
Pressure Probe Not Working| Discharge pressure sensor (U10) not reading.
•Check connections and probe.
60| | Auto Reset| A61 – Suction
Temperature Probe
Not Working| Suction temperature sensor (U2) not reading.
•Check connections and probe.
80| | Auto Reset| A81 – Compressor
Envelope – High
Compression Ratio| High difference between suction and discharge pressures – exceeding maximum compression ratio set in parameters.
•Check sensors
•Check refrigerant level.
81| | User Reset| A82 – Compressor
Envelope – High
Discharge Ratio| Envelope high discharge pressure limit exceeded.
•Check refrigerant level.
•Check discharge pressure sensor.
•Check air flow.
82| | Auto Reset| A83 – Compressor
Envelope – High Motor Current| High motor current level exceeded – causes may include faults on compressor windings or issues in refrigerant circuit.
•Check compressor windings.
•Check refrigerant level.
83| | Auto Reset| A84 – Compressor
Envelope – High
Suction Pressure| High suction pressure alarm.
•Check compressor operation.
84| | Auto Reset| A85 – Compressor
Envelope – Low
Compression Ratio| Low Compression ration, lower than expected for compressor
operation.
•Check no bypass is active.
•Check compressor operation.
•Check for leaks.
85| | Auto Reset| A86 – Compressor
Envelope – Low
Differential Pressure| Low pressure differential, lower than expected for compressor operation.
•Check no bypass is active.
•Check compressor operation.
•Check for leaks.
86| | User Reset| A87 – Compressor
Envelope – Low
Discharge Pressure| Low discharge pressure alarm.
•Check compressor operation.
•Check refrigerant level.
•Check system not outside ambient limits.
87| | Auto
Reset Until
Counter| A88 – Compressor
Envelope – Low
Suction Pressure| Low suction pressure alarm.
•Check compressor operation.
•Check refrigerant level.
•Check system not outside ambient limits.
88| | Auto Reset| A89 – Compressor
Envelope – High
Discharge
Temperature| Envelope high discharge temperature limit exceeded.
•Check refrigerant level.
•Check discharge temperature sensor.
•Check airflow.
89| | Auto Reset| A90 – EVD – LOP
(Low Operating Pressure)| LOP alarm triggered because suction pressure was below LOP limit for a set period of time.
•Check refrigerant level.
•Check LOP limits.
90| | Auto Reset| A91 – EVD – MOP
(Maximum Operating
Temperature)| MOP alarm triggered because suction pressure was below MOP limit for a set period of time.
•Check refrigerant level.
•Check MOP limits.
92| | Auto Reset| A93 – EVD – Low
Suction Temperature| EVD (Electronic Expansion Valve Driver) detected low suction pressure.
•Check refrigerant level.
•Check EVD configuration and refrigerant is correct.
•Check suction temperature sensor.
93| | Auto Reset| A94 – EVD –
Emergency Closing| EVD had to perform, an emergency closing procedure.
•Other alarms and resolve.
94| | Auto Reset| A95 – BLDC – Delta
Pressure Greater Than
The Allowable At Startup| Pressure differential between suction and discharge pressures higher than allowed at startup, preventing BLDC start.
•Check bypass valve operation.
•Check pressure sensors.
•Extend bypass valve activation time.
103| | Auto Reset| A104 – EVD –
Selftuning Alarm| EVD self tuning failed.
•Restart tuning required.
198| | Auto Reset| A199 – Master Offline| Secondary controller cannot detect primary.
•Restart tuning required.
305| | Auto Reset| A306 – Serious Alarm| Another unit in the group has a serious alarm.
•Resolve alarm on secondary units.
306| | Auto Reset| A307 – Warning
Equalize Fail| Equalisation failed at compressor start-up.
•Check bypass valve operation.
•Extend bypass time if required.
•Check suction and discharge pressure sensors.
307| | Auto Reset| A308 – PSD
Parameters Mismatch| Compressor (BLDC) parameters do not match expected for the compressor and unit type.
•Check BLDC parameters and restart default initialisation procedure.
308| | Auto Reset| A309 – Thermal Wheel
Temperature Probe Failure| Thermal wheel extraction temperature probe (U3) failed.
309| | Auto Reset| A310 – Crankcase
Temperature Probe Failure| Cranckcase temperature probe (U4) failed.
•Check temperature sensor.

HEAT PUMP ACCESS

Caution: Before carrying out the below operation the system must be isolated at the main BPS isolator.
5.1 Heat Pump Layout 5.2 EEV’s & Condensate Pump 5.3 MCB![nuaire BPS ECO HP07 Air Handing

• MCB](https://manuals.plus/wp-content/uploads/2023/08/nuaire-BPS-ECO-HP07 -Air-Handing-MCB.jpg) 5.4 Inverter Choke![nuaire BPS ECO HP07 Air Handing
• Inverter Choke](https://manuals.plus/wp-content/uploads/2023/08/nuaire-BPS- ECO-HP07-Air-Handing-Inverter-Choke.jpg) 5.5 Inverter PCB 5.6 Thermal Wheel Exhaust Temperature Thermistor

5.7 Heat Pump Skid Withdrawal Video

https://sketchfab.com/3d-models/bps-eco-hp-ahu-with-integral-heat- pump-copy-19ee4a2c096f4e7f89bee91f4d2dc208

R32 GAS DETECTORS

43 R32 Gas Detector Datasheet

AD-em HFC – Datasheet
Unit overview
The AD-em HFC is a stand-alone, semi conductor based refrigerant leak detector for use in air conditioning and refrigeration applications.
Specification
Housing………….…..…….…..…………..………….White plastic (main unit)
Power…………………….………. 12-24V AC or DC – 2.5VA Max, 1VA Nom
Relays……….…….. 1 Relay – Max Rating 0.5A @ 125VAC / 1A @ 24VDC
Indicators………………………………………….….……… 1 x Tri-colour LED
Sounder……………………………………………..85dB 2300Hz (+/- 300Hz)
Screw Terminals………………………….……….5 x 0.5mm/sq stranded core
Size…………………….………………………………….……..85 x 85 x 38mm
Weight……………….………………..……………………..……….approx. 85g
Refrigerant…………………. R410a, R32 (other gases available on request)
Sensor…………………………………………….….………… Semi-conductor

Mounting
Remove the detector front cover and carefully unclip the detector PCB from the mounting plate. Fix the mounting plate to the desired location using the holes provided. Refit the PCB and front cover once completed. Note: Cables must only enter the detector via the cable entries provided.

Locating the sensor
The main considerations when deciding where to locate the detector are:-
Low Level – As HFC refrigerants are heavier than air, the detector / sensor should be mounted as close as practical to floor level (150mm ~ 250mm above floor level), preferably directly below the potential source of any leaks.
Accessible for Maintenance – The detector should be mounted in a position where it can be easily accessed for maintenance and repairs.
Minimize Damage – Mount the detector in a position that minimizes the risk of mechanical damage to the unit.
Minimize false alarms – Semi-conductor sensors can be ‘poisoned’ by contaminants and after exposure may take considerable time to recover. Solvent paints and silicon mastic are typical contaminants and exposure from these substances must be avoided.
Ensure leaks can be detected – Do not mount the sensor next to doors or windows, where fresh air may influence readings.

Detector PCB electrical connections and features

1| Power (V1)| 12 > 24v
AC / DC
---|---|---
2| Power (V2)
3| Relay (NO)
4| Relay (C)
5| Relay (NC)

Testing
Measure the Gv voltage on the test/calibration connector – pin 3 (GND), pin 6 (Gv); as shown opposite >>
Refer to the table below for the expected voltages.

Red>Off 1Hz
1 Amberpulse pthin| 1 x pulse pymin| | N/A
Pre-Alarm Level 1
Gv> 2.5V
Fcr >2 secs| Flashing
Green>Off 2Hz| OFF| | >2.5VDC
Pre-Alarm Level 2
Gv> 3.5V
For >2 secs| Flashing
Red>Off 2Hz| OFF| | >3.5VDC
Low Level Alm.
Gv> 3.5V
For >30mins| Flashing
Red >Amber 2Hz| Pulsing
21-1z| | >3.5VDC
High Level Alm.
Gv > 4.2V
For >30secs| Flashing
Red >Amber 4Hz| Pulsing
41-1z| | >4.2VDC
Notes: When returning below Pre-araM7 level — there is a 60s de ay before returning to Normal Operation.

CPC (UK)
Unit 3 Beta Way,
Thorpe Industrial Estate,
Egham, Surrey
TW208RE
Phone: +44 (0) 1784 222110
Web: www.cpcuk.co.uk

For further information refer to user manual
ADEM04v1.0 – AD-em HFC Product datasheet
Disclaimer
Gases and vapours other than the target refrigerant gas may cause semi- conductor sensors to react. Sensors exposed to silicon fumes may be permanently damaged. Our policy is one of continual improvement ~ we reserve the right to modify and change the specifications.

PARTS LIST

Nuaire Part Number| Quantity Of Parts|
---|---|---
BPS HP07| BPS HP12| BPS HP17| Description
7713322| 2| 2| | C-7RZ233H3CBF 200V AVIC R32 Rotary Compressor
7713323| | | 2| C-7RZ320H3CAF 200V AVIC R32 Rotary Compressor
7713279| 2| 2| 2| Inverter 18A, 380480VAC 3PH
7713280| 2| 2| 2| Sensor NTC HT IP55 0/150T 6M
7713958| 2| 2| 2| EEV Coil For E2V%
7713876| 2| | | EEV E2V11ZWF7
692234| | 2| | EEV E2V14FWF73
7713289| | | 2| EEV E2V18FWFC1
692298| 4| 4| 4| Press Trans Cable & Vulcanized Connector
692237| 2| 2| 2| c.pCO Mini DIN High-End, LCD
692398| 2| 2| 2| PRESS.TRASD.0-5V 0…45 BARG (0…650PSIG)
692238| 2| 2| 2| PRESS.TRASD.0-5V 0…34,5 BARG
692239| 2| 2| 2| Sensor NTC L•,0-50/+105GC IP67
692241| 2| 2| 2| Connector Kit, c.pCO Mini
692246| 2| 2| 2| Sensor NTC HP IP67 -50T50 6M
692369| 2| 2| 2| HP Switch YKO3H-059-42R35R
692347| 2| 2| 2| LDF3A08 ODF 1/4 Bypass Solenoid Valve
692345| 2| 2| 2| SQ-A25024-000001 AC24V RV Coil
692342| 2| | | SHF(L)-7H-34-52 Reversing Valve
692343| | 2| | SHF(L)-7H-35-52 Reversing Valve
692344| | | 2| SHF 14A-46 Reversing Valve
692303| 4| 4| | KGQ-W11661-701 3/8 Strainer
692300| | | 4| KGQ-W11881-7011/2 Strainer
692348| 2| 2| 2| FQ-A05024-000709 Bypass Solenoid Coil
692371| 2| | | Suction Line Accumulators – Volume 04S
692372| | 2| | Suction Line Accumulators -155
692373| | | 2| Suction Line Accumulators -165
7713317| 1| | | 14kW Twin Circuit Right Handed DX Coil
7713318| 1| | | 14kW Twin Circuit Left Handed DX Coil
692306| | 1| | 20kW Twin Circuit Left Handed DX Coil
692307| | 1| | 20kW Twin Circuit Right Handed DX Coil
7713570| | | 1| 28kW Twin Circuit Left Handed DX Coil
7713571| | | 1| 28kW Twin Circuit Right Handed DX Coil
692304| 2| 2| 2| DC Chokes

ANNUAL MAINTENANCE & SERVICING

• An inspection of the exterior condition of the equipment.
• An annual test for refrigerant leaks on each individual condenser/evaporator circuit in accordance with current legislation. This should include all integral soldered joints. All seals and valves should be inspected for possible wear and tear.
• Any refrigerant leaks found should be repaired asap.
• Refrigerant gas detectors should be clean and checked for correct operation (see page 47 for detector details).
• Heat exchange coils should be inspected for free airflow and cleaning carried out either by reverse blowing or by brushing with a stiff brush.
• Compressors should be checked for smooth operation.
• The controls should be checked for correct operation setting, calibration and response.
• The safety controls should also be inspected for operation and settings.
• There should be an inspection of the solenoid valves, EEV motorised valve heads and checked for operation.
• Condensate and overflow drains should be tested and cleaned.
• Refrigeration system pipe insulation should be inspected for any damage.
• Compressor anti-vibration mountings, should be checked for their effectiveness.
• Wiring should be checked for integrity.
• The temperature and pressure sensors should be checked and info recorded.
• A written service report should be provided and the customers F-Gas log books updated.
• Chemical treatment to remove bacteria, smells and odours is also recommended.
• High pressure switch operation should be checked (every 24 months).

AFTER SALES AND REPLACEMENT PARTS

For technical assistance or further product information, including spare parts and replacement components, please contact the After Sales Department.
If ordering spares please quote the serial number of the unit together with the part number, if the part number is not known please give a full description of the part required. The serial number will be found on the identification plate attached to the unit casing.

Telephone 02920 858 400 aftersales@nuaire.co.uk
9.1 Nuaire Website QR Code

https://nuaire.co.uk/

Technical or commercial considerations may, from time to time, make it necessary to alter the design, performance and dimensions of equipment and the right is reserved to make such changes without prior notice.

Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
22. 05. 23. Document Number 672055

References

• Ventilation Systems for Better Indoor Air Quality | Nuaire

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