LG AHUW148A3 Air To Water Heat Pump Instruction Manual

LG AHUW148A3 Air To Water Heat Pump

Product Information

Specifications

• Product: Air-to-Water Heat Pump
• Model: MFL69676201 Rev.02_072419
• Manufacturer: LG
• Website: www.lg.com

Installation Manual

Please read this installation manual completely before installing the product. Installation work must be performed in accordance with the national wiring standards by authorized personnel only. Please retain this installation manual for future reference after reading it thoroughly.

Safety Instructions

The manual describes the process of installation and maintenance of the device. The installation and maintenance can only be performed by qualified personnel. Read the manual carefully before the installation, this way you will be informed about the intended use, functionality, and process of handling the device.

Symbols

The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into ‘WARNING’ and CAUTION’ as described below:

• WARNING: This indicates that the failure to follow the instructions can cause serious injury or death.
• CAUTION: This indicates that the failure to follow the instructions can cause minor injury or damage to the product.
• NOTICE: A notice holding important information regarding requirements of the manufacturer and the device.

Installation Part

General Information

Before starting the installation, make sure to review the following information:

• Model Information
• Parts and Dimensions

Installation of Outdoor Unit

Follow these steps to install the outdoor unit:

1. Ensure the designated installation conditions are met.
2. Set up and connect the external sensor.
3. Drill a hole in the wall for installation.
4. Install the unit at a seaside location, if applicable.
5. Take seasonal wind and cautions in winter into consideration.

Installation of Indoor Unit

Follow these steps to install the indoor unit:

1. Choose a suitable location for the device.
2. Connect the indoor unit with the outdoor unit.
3. Establish hydraulic connection.
4. Complete electrical connection.

Piping and Wiring for Outdoor Unit

For outdoor unit piping and wiring, follow these steps:

1. Ensure proper refrigerant piping.
2. Complete electrical wiring.
3. Finalize the installation.
4. Perform a leakage test and evacuation.

System Set-Up

Set up the system using the DIP switch setting according to the instructions provided.

Check Points, Maintenance, and Troubleshooting

Before starting operation, check the following points:

• Complete the check list.
• Perform care and maintenance tasks.
• Conduct a test run.
• Ensure limiting concentration.
• Check for airborne noise emission.

Searching the Manual Using Your Mobile

Use your mobile device to search the manual for specific information.

FAQs

• Q: Who can perform the installation and maintenance of the device?
  • A: The installation and maintenance can only be performed by qualified personnel.
• Q: Where can I find the model information?
  • A: The model information can be found in the General Information section of the installation manual.
• Q: How do I set up and connect the external sensor?
  • A: Follow the instructions provided in the Installation of Outdoor Unit section.
• Q: What should I do before starting operation?
  • A: Complete the check list, perform care and maintenance tasks, and conduct a test run.
• Q: How can I search the manual using my mobile device?
  • A: Use your mobile device to access the manual and search for specific information.

ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH CESTINA NEDERLANDS POLSKI LIMBA ROMÂN

INSTALLATION MANUAL
AIR-TO-WATER HEAT PUMP

Please read this installation manual completely before installing the product. Installation work must be performed in accordance with the national wiring standards by authorized personnel only. Please retain this installation manual for future reference after reading it thoroughly.
Air-to-Water Heat Pump
Original instruction

MFL69676201 Rev.02_072419

www.lg.com
Copyright © 2016 – 2019 LG Electronics Inc. All Rights Reserved.

2 Air-to-Water Heat Pump

ENGLISH

Safety Instructions

Safety Instructions
The manual describes the process of installation and maintenance of the device. The installation and maintenance can only be performed by qualified personnel. Read the manual carefully before the installation, this way you will be informed about the intended use, functionality and process of handling the device.
· The manual has to be handed over to the end user after installation. · If this product is being handed over to a third person, ensure that you
provide them with this manual too.
Definitions · An informed person is a person who reads this manual. · A qualified person has a certificate of expert qualifications. · The authorized technician is trained and authorized by the manufacturer
to perform maintenance and servicing of the device. · The user uses the device according to its use. · The installer is a person professionally trained for performing hardware
and/or electric installation work and mounting of the device.
Incorrect use of the device can lead to damage to the device, property or injury to the user. To reduce risk, the manual points out important information with the use of symbols.

Installation Manual 3

Safety Instructions
Symbols
The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into WARNING’ andCAUTION’ as described below.
! This symbol is displayed to indicate matters and operations that can cause risk. Read the part with this symbol carefully and follow the instructions in order to avoid risk.
! WARNING
This indicates that the failure to follow the instructions can cause serious injury or death.
! CAUTION
This indicates that the failure to follow the instructions can cause the minor injury or damage to the product.
NOTICE
A notice holding important information regarding requirements of the manufacturer and the device.
General
NOTICE
· Read Owner’s manual and Installation manual before installation. · Any altering or replacement of original components of the device
voids the manufacturer’s guarantee for safe and functional operation. The manufacturer is not responsible for the consequences and will not acknowledge claims for damages in these cases of undesignated and incorrect use of the device. The user is solely responsible for injuries and damages on the device itself or on other objects resulting from undesignated and incorrect use of the device. · The installation of the device has to be performed in accordance with the manual; otherwise the manufacturer does not acknowledge the warranty.

4 Air-to-Water Heat Pump

ENGLISH

Safety Instructions
· High pressure can cause to safety valve to leak water. Make sure the drainage pipe is open to atmospheric pressure.
! WARNING
· Failure to comply with the manual and good practice while connecting the device to the power supply can lead to serious injury or death.
· Connecting the device to the power source can only be performed by a qualified personnel.
Safety warnings and instructions
! WARNING
· It is prohibited to move, shift, clean or service the device while in operation.
· It is prohibited to play with the device. Children are not allowed to clean the device without supervision.
· The device can be operated independently only by informed persons who are familiar with the safe operation of the device and understand possible hazards of its operation. Children older than 8 and people with reduced physical and mental capacities and with lack of experience and knowledge can only operate the device under the supervision of an informed person.
· Before installation and any further adjustments to the device it is necessary to consider the manual for safe use and maintenance.
· The installation has to be performed in accordance with national regulations on electrical installations and with the instructions of the manufacturer. It has to be performed by a professionally trained person.
· It has to be made sure that the device does not endanger anybody. Access to the device has to be denied to children and persons who are not informed about the operation of the device.
· The device must never be cleaned with cleaning agents containing sand, soda, acid or chlorides because these might damage the surface of the device.
· The device contains fluorinated greenhouse gas. Hence, installation, servicing and working with the coolant/device can only

Installation Manual 5

Safety Instructions
be performed by the authorised personnel. While performing works on the device it is necessary to prevent the leaking of the refrigerant into the atmosphere. · It is necessary to consider all technical data and instructions in this manual including all warnings and notes during planning, design, installation and use of the device. · Electrical installations have to be inspected in accordance with regulations on requirements for low voltage in buildings by a qualified personnel. · Connecting the devices power cable must be performed by a qualified electrician. The device must be disabled during the procedure. · In case the power cable of the device is damaged, it has to be replaced. The replacement can only be performed by the manufacturer and authorized maintenance worker. · Before opening the device disconnect all electrical circuits and make sure the device is not under voltage. · Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. · For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. · Always ground the unit. · Install the panel and the cover of control box securely. · Always install a dedicated circuit and breaker. · Use the correctly rated breaker or fuse. · Do not modify or extend the power cable. · Do not install, remove, or reinstall the unit by yourself (customer). · For antifreeze, always contact the dealer or an authorized service center. · For installation, always contact the dealer or an Authorized Service Center. · Do not install the unit on a defective installation stand. · Be sure the installation area does not deteriorate with age. · Do not install the water pipe system as Open loop type. · Use a vacuum pump or inert (nitrogen) gas when doing leakage test or purging air. Do not compress air or oxygen and do not use flammable gases.

6 Air-to-Water Heat Pump

ENGLISH

Safety Instructions
· Make sure the connected condition of connector in product after maintenance.
· Do not touch leaked refrigerant directly. · Take care to ensure that power cable could not be pulled out or
damaged during operation. · Do not place anything on the power cable. · Do not plug or unplug the power supply plug during operation. · Do not touch (operate) the unit with wet hands. · Do not place a heater or other appliances near the power cable. · Do not allow water to run into electric parts. · Do not store or use flammable gas or combustibles near the unit. · Do not use the unit in a tightly closed space for a long time. · When flammable gas leaks, turn off the gas and open a window for
ventilation before turning the unit on. · If strange sounds, or small or smoke comes from unit, turn the
breaker off or disconnect the power supply cable. · Stop operation and close the window in storm or hurricane. If
possible, remove the unit from the window before the hurricane arrives. · Do not open the front cover of the unit while operation. (Do not touch the electrostatic filter, if the unit is so equipped.) · Do not touch any electric part with wet hands. you should be power off before touching electric part. · Do not touch refrigerant pipe and water pipe or any internal parts while the unit is operating or immediately after operation. · If you touch the pipe or internal parts, you should be wear protection or wait time to return to normal temperature. · Turn the main power on 6 hours ago before the product starting operation. · Do not touch electric parts for 10 minutes after main power off. · The inside heater of product may operate during stop mode. It is intended to protect the product. · Be careful that some part of the control box are hot. · When the unit is soaked (flooded or submerged), contact an Authorized Service Center. · Be cautious that water could not be poured to the unit directly.

Installation Manual 7

Safety Instructions
· Ventilate the unit from time to time when operating it together with a stove, etc.
· Turn the main power off when cleaning or maintaining the unit. · Take care to ensure that nobody could step on or fall onto the unit. · For installation, always contact the dealer or an Authorized Service
Center. · If the unit is not used for long time, we strongly recommend not to
switch off the power supply to the unit.
! CAUTION
· Putting any kinds of items on or next to the device is prohibited. · The device must not be placed in a room where it cannot be
removed. Later walling or setting up of other obstacles next to the device is forbidden. · For the correct operation of the device, the electrical distributor has to provide electricity of adequate quality (SIST EN 50160). In normal conditions this is within ± 10 % of the rated voltage. The data about the state of the electrical grid have to be acquired from the electrical distributor. · Connecting the device to the electric grid has to be performed in accordance with the standards. The device has to be connected to the electric grid via the power supply cut-off which is installed into the electrical installation under the regulations in force. The power supply cut- off has to separate all contacts under the regulations of the overvoltage category III. · Always check for gas (refrigerant) leakage after installation or repair of unit. · Keep level even when installing the unit. · Use two or more people to lift and transport the unit. · Do not use the unit for special purposes, such as preserving foods, works of art, etc. · Use a soft cloth to clean. Do not use harsh detergents, solvents, etc. · Do not step on or put anything on the unit. · Use a firm stool or ladder when cleaning or maintaining the unit.

8 Air-to-Water Heat Pump

ENGLISH

Safety Instructions
· Do not turn on the breaker or power under condition that front panel cabinet, top cover, control box cover are removed or opened.
· The drainage hole of the safety valve must be directed downwards. Make sure it does not freeze A yearly inspection of the safety valve is necessary to ensure its proper operation; when performing it, remove lime deposits and make sure the safety valve is not blocked.
· In order to avoid a hazard due to inadvertent resetting of the thermal cut- out, this appliance must not be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly switched on and off by the utility.

Installation Manual 9

Safety Instructions
Obligations of the manufacturer
The manufacturer guarantees that the device is in accordance with current European directives and standards. The device is marked with the mark CE and it has all the necessary documentation. We reserve the right to make changes to the manual without prior notice. As manufacturer we do not take responsibility for the consequences arising from: · Non-compliance with the manual for the device. · Incorrect and/or inadequate maintenance of the device. · Non-compliance with the manual for the installation of the device.
Obligations of the installer during installation
The installer is responsible for installing the device in accordance with the following requirements: · To thoroughly study the instructions for use and installation
accompanying the device before installation. · To install the device in accordance with the instructions and national
legislation, policies and standards in force.
Obligations of the user
For ensuring unobstructed and effective operation of the device the user has to follow the following instructions: · To thoroughly study the instructions for use and installation
accompanying the device before use. · To have a qualified and authorized installer perform the installation of the
device. · Ensure regular yearly inspections and maintenance of the device by the
authorized maintenance worker. · Store this manual in an appropriate dry place close to the device.

10 Air-to-Water Heat Pump

ENGLISH

Installation Part

Installation Part

Thank you for choosing LG Electronics Air-to-Water Heat Pump Before starting installation, please ensure that all parts are found inside the product box.

Indoor unit box Item

Image

Quantity

Indoor unit

1

Installation Manual

Owner’s Manual
Outdoor unit box Item
Outdoor Unit (Product heating capacity : 9 kW)
Outdoor Unit (Product heating capacity :
12 kW, 14 kW, 16 kW)
Accessory Box Item
Modbus Converter (PP485B00K)

Image
Image
ON 1234 5678

1 1 Quantity 1
1
Quantity 1
Installation Manual 11

General Information

General Information

With advanced inverter technology,

is suitable for applications like under floor heating,

under floor cooling, and hot water generation. By Interfacing to various accessories user can

customize the range of the application.

In this chapter, general information of

is presented to identify the installation procedure.

Before beginning installation, read this chapter carefully for useful hints on installation techniques.

Model Information
Model number nomenclature
Factory Model Name

AH NW1 6 6 0 6 B 0

AHUW0 9 6 A 3

Series Number
Function B: DHW tank inegrated with Buffer tank D: DHW tank integrated
Heater Capacity 06 : 6 kW
Heater Electrical ratings 6 : 1 phase 220-240 V AC 50 Hz
Heating Capacity 16 : 16 kW
Model Type W : Inverter Heat Pump H : Heat Pump
Classification N : Indoor Unit
Air-to-Water Heat Pump for R410A

12 Air-to-Water Heat Pump

Series number
Function A : General heating heat pump Electrical ratings 6 : 1 phase 220-240 V AC 50 Hz 8 : 3 phase 380-415 V AC 50 Hz Heating Capacity 09 : 9 kW 12 : 12 kW 14 : 14 kW 16 : 16 kW Model Type W : Inverter Heat Pump Classification U : Outdoor Unit Air-to-Water Heat Pump for R410A

ENGLISH

Buyer Model Name
H N 16 1 6 T N B 0
Series number
Platform (Chassis code) B : DHW tank integrated Classification N : Indoor unit of Split type T : DHW tank integrated Heater capacity 6 : 6 kW Heater
Heater electrical ratings 1 : 1Ø, 220-240 V, 50 Hz Heating capacity Ex ) 16 kW : `16′ Classification N : Indoor unit H : Air to water Heat Pump

General Information

H U 09 1 U 4 3

Series number
U3 : U3 Chassis U4 : U4 Chassis
Classification U : Outdoor unit of Split type
Electrical ratings 1 : 1Ø, 220-240 V AC 50 Hz 3 : 3Ø, 380-415 V AC 50 Hz
Heating capacity Ex ) 9 kW : `09′ Classification U : Outdoor unit H : Air to water Heat Pump

Model name and related information

Model Name

Outdoor Unit

Indoor Unit

AHUW146A2

AHUW096A3

AHUW126A3

AHUW146A3 AHUW166A3

AHNW16606B0

AHUW128A3

AHUW148A3

AHUW168A3

Built-In Electric Heater(kW)
1 4(2+2) 3 6(2+2+2)

Capacity

Heating(kW)1 Cooling(kW)2

14.0

11.0

9.0

9.0

12.0

10.4

14.0

11.0

16.0

12.0

12.0

10.4

14.0

11.0

16.0

12.0

Power Source 220-240 V ~ 50 Hz 380-415 V ~ 50 Hz

1 : tested under Eurovent Heating condition (water temperature 30 °C ¡ 35 °C at outdoor ambient temperature 7 °C / 6 °C)
2 : tested under Eurovent Cooling condition (water temperature 23 °C ¡ 18 °C at outdoor ambient temperature 35 °C / 24 °C)

Installation Manual 13

General Information
Parts and Dimensions
Indoor unit
1 Heating/Cooling Inlet 2 Heating/Cooling Outlet 3 Warm sanitary water 4 DHW – circulation 5 Cold sanitary water – supply 6 Gas pipe 5/8“­ refrigerant 7 Liquid pipe 3/8“­ refrigerant 8 Mg. Anode

A Buffer tank B Circulating pump C Electric flow heater D TT3000 Controller E Condenser F 3 Way Valve G DHW tank

(unit:mm)

2 045 1 978

14 Air-to-Water Heat Pump

ENGLISH

Outdoor unit(External)

General Information
Product Heating Capacity :
12 kW,14 kW,16 kW (unit:mm)
Supporter

490

Description

No

Name

1

Liquid-side Service Valve

2

Gas-side Service Valve

3

Air discharge Grill

Installation Manual 15

General Information

Product Heating Capacity : 9 kW (unit:mm)
Supporter

Description

No

Name

1

Liquid-side Service Valve

2

Gas-side Service Valve

3

Air discharge Grill

16 Air-to-Water Heat Pump

ENGLISH

Installation of Outdoor Unit

Installation of Outdoor Unit

The outdoor unit of

is installed outside to exchange heat with ambient air. Therefore, it

is important to properly secure the outdoor unit against harsh environmental conditions and

mechanical injuries. This chapter provides instructions to install the outdoor unit, make a route to

connect with the indoor, and precautionary measures to follow if installed around seaside.

Conditions where Outdoor Unit is Installed
· If a sunroof is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the heat exchanger is not restricted.
· Ensure that the spaces indicated by arrows around front, back and side of the unit. · Do not place animals and plants in the path of the warm air. · Consider weight of the outdoor unit into account and select a place where noise and vibration are
minimum. · Select a place such that the warm air and noise from the outdoor unit do not disturb neighbors.
Sunroof
300

oFbesntcaecloers

300
600 700
Minimum service space (unit:mm)

Installation Manual 17

Installation of Outdoor Unit
Set up and connection of the external sensor
For controlling heating according to the external temperature, it is necessary to install the external temperature sensor.
! CAUTION
The sensor must be set up in a shady spot. The sensor must not be set up above a window or door. It must be located away from heat sources. For measuring external temperature, the sensor type PT 1000 is used.

Temperature sensor for external temperature.

T Temperature sensor for external temperature.

The direction of connecting cables.

! CAUTION
The external sensor must be connected and should be watertight to prevent water penetration.

Drill a Hole in the Wall
· For drilling a hole into the wall to connect a pipe to connect pipe between the indoor unit and the outdoor unit, please follow the below instructions. – Drill the piping hole with a Ø 70 mm hole core drill. – Piping hole should be slightly tilted to the outdoor side to prevent raindrops from entering indoors.

18 Air-to-Water Heat Pump

Indoor

Wall Outdoor

5~7 mm

ENGLISH

Installation of Outdoor Unit
Installation at Seaside
! CAUTION
1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2. Do not install the product where it could be exposed to sea breezes directly. It can result in corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient performance.
3. If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea breezes. Otherwise it needs additional anticorrosion treatment on the heat exchanger.
Selecting the location(Outdoor Unit)

1. If the outdoor unit is to be installed close to the seaside, direct exposure to the sea breezes should be avoided. Install the outdoor unit on the opposite side of the direction of the sea breeze.

Sea wind

Sea wind

2. In case, to install the outdoor unit on the seaside, put up a windbreak not to be exposed to the sea wind.

Windbreak Sea wind

· It should be strong enough like concrete to prevent the sea wind from the sea. · The height and width should be more than 150 % of
the outdoor unit. · It should be kept more than 700 mm of space
between outdoor unit and the windbreak for easy. air flow.

3. Select a well-drained place.
   Periodic ( more than once/a year ) clean the impurities settled on the heat exchanger by using water.
   Seasonal wind and cautions in winter
   · Sufficient measures are required in a frozen area or chilly climates to facilitate efficient operation of the product. · Take preemptive measures in case there is a seasonal wind or snow in winter. · Install a suction and discharge duct not to let in snow or rain. · Install the outdoor unit such that it does not come in contact with snow directly. If snow piles up and freezes on the air
   suction hole, the system may malfunction. If it is installed in a snowy area, attach the hood to the system. · Install the outdoor unit at the installation console higher by 500 mm than the average snowfall (annual average snowfall)
   if it is installed at the area with heavy snowfall. · Where snow is accumulated on the upper part of the Outdoor Unit by more than 100 mm, always remove the snow for
   efficient operation.
   1. The height of H frame must be more than 2 times the snowfall and its width shall not exceed the width of the product. (If width of the frame is wider than that of the product, snow may accumulate)
   2. Don’t install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
   Installation Manual 19

Installation of Indoor Unit
Installation of Indoor Unit
General
The device is installed according to capacity

1 Heating/Cooling Inlet

3 DHW ­ outlet

2 Heating/Cooling Outlet

4 DHW ­ circulation

C Electrical and communication connection 5 DHW ­ inlet

E Connection to outdoor unit

6 Gas pipe 5/8“­ refrigerant

D Connection to outdoor unit

7 Liquid pipe 3/8“­ refrigerant

P6 Power supply cable

P7

Communication cable – connection between outdoor and indoor unit

20 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit
Location of the device
NOTICE
· It is obligatory to consider the minimal clearance from obstacles for ensuring unobstructed access for maintenance and service.
· The location of the device has to be accessible by manual transport devices to ensure undisturbed delivery of replacement parts and equipment for maintenance and servicing. The operator is charged costs connected with hiring special equipment for installing the device, servicing and maintenance separately, these costs are not subjected to warranty.
· When you install a device into the building, ensure that you build in a water drain in case of spillage.
Minimal clearance from the device
! CAUTION
The device must not be installed under pipelines because there is a possibility of condensate forming. Ingress of water condensate can cause disturbances in the operation.
NOTICE
The installation location of the indoor unit must be dry and in the temperature range between +10 °C and 40 °C.

Installation Manual 21

Installation of Indoor Unit
Minimal clearances of the external device from walls facilitates seamless operation, maintenance and servicing.

(unit:mm) The unit should be installed upwards in a straight manner.

22 Air-to-Water Heat Pump

Front panel removal
Front panel removal

Installation of Indoor Unit

ENGLISH

Firstly unscrew 2 screws of the panel (A).

Open the panel (A) towards yourself and pull upward. After this repeat the procedure for each
panel.(B,C)

Connection with the outdoor unit
The connection between the indoor and outdoor unit is performed via refrigerant pipes and communication line.
! CAUTION
The pipeline and electrical cables have to be protected against heat and waterproof insulation in a protective pipe. This prevents the pipe connections soaking in cases of heavy groundwater or rainfall and with it intensive draining of heat into its surroundings.
Gas and liquid connection
The pipe connection between the external and internal devices can be made by positioning the pipes in two ways: · A inside two separate ribbed protective pipes, · B in one joint ribbed protective pipe.

Installation Manual 23

Installation of Indoor Unit

A P16 Fill with waterproof polyurethane foam

P17

Protective pipe for external sensors or communication cables

P18

Copper pipe Cu ­ refrigerant grade quality

P19 Insulation min. 13 mm.

B P20 Ribbed protective pipe min. 75
The ribbed protective pipe for the power P21 cable depends on the dimension of the
supply cable
P22 Ribbed protective pipe min. 150

Preparation of the refrigerant pipe
Prepare the pipe by following the below steps. Note that damaged joints of the pipe result in leakage. Thus, create joints in accordance with the below regulations.
STEP 1: Cutting the pipe · Use a pipe cutter which does not produce chips to cut the pipe. · Determine the distance between the outdoor and indoor unit. · Cut the pipes longer in order to ensure connecting the internal and external device normally.

1 Copper pipe 2 Inclined 3 Uneven 4 Rough
STEP 2: Removal of chips · Remove all chips from the part where the pipe was cut. · Hold the pipe downward during cleaning so that the chips do not fall into the pipe.

24 Air-to-Water Heat Pump

Installation of Indoor Unit

ENGLISH

1 Copper pipe 2 Copper pipe held downward 3 Beveler STEP 3: Inserting the screw nut · Remove the screw nut from the exterior unit. · Insert the screw nut into the pipe which has been cleaned.
1 Copper pipe 2 Screw nut STEP 4: Edging · The edging has to be performed with tools for edging as shown:

1 Holder 2 Copper pipe 3 Fitting 4 Cone 5 Bracket 6 Handle 7 Holder

· Mount the copper pipe firmly into the tool for edging. Consider the dimensions listed in the table below.

[mm] 9.52 15.88

External diameter

[inch] 3/8 5/8

”A” [mm] 1.5 ~ 1.7 1.6 ~ 1.8

Installation Manual 25

Installation of Indoor Unit
STEP 5: Testing · Compare the edging of the pipe with the picture below. · In the case of damaged edging, cut off the damaged part and repeat the edging procedure.

1 Circular edging of the pipe of the same length.
2 Circularly smooth edge 3 Interior edge and surface without
scratches

4 Inclined edge 5 Uneven surface 6 Cracked / rough 7 Unequal thickness

Connecting the refrigerant pipe on the indoor unit

STEP 1: Determine the direction of the pipe connection · The refrigerant pipe connections are located at the top of the unit. Please refer to the device
drawing for additional information.

STEP 2: Mounting · Align with the middle of the pipe and then tighten the screw nut by hand. · Tighten the screw nut with a torque wrench until it clicks. Prescribed torques for tightening:

[mm] 9.52 15.88

External diameter

[inch] 3/8 5/8

Torque [Nm] 34 ­ 42 65 ­ 81

26 Air-to-Water Heat Pump

1 Torque key 2 Counter key

ENGLISH

Installation of Indoor Unit
Hydraulic connection
! WARNING
The dimensioning of circulation pumps, valves, safety elements and pipes has to be performed by the design engineer according to the heating/cooling capacity of the device. Before connecting the device, it is necessary to rinse the pipe system thoroughly and remove impurities (solid particles, oils, greases …). Use suitable detergents if necessary.

! CAUTION
The closing valve with exhaust has to be installed lower than the pipe connections on the device.
DHW system
The hydraulic connection has to be installed in accordance with the national and local regulations for connecting buffer tanks for DHW to enable the water flow in full force. To prevent water leakage, install a drain through the floor below the level of the device. The following picture shows the correct hydraulic connection of the device.

! CAUTION
In the event of a longer absence from home and no use of hot water, close the valve on the cold water supply.

! CAUTION
Because different materials are used for pipe installation, all connections on the device (cold and hot water, circulation, heat conductor) have to be galvanically isolated; otherwise corrosion of connections can occur on the inner side of the buffer tank for DHW. We recommend placing galvanic isolators made of red brass the length of at least twice the diameter of the pipe on the connections.
The DHW tank is intended for storing drinking water, this is why the water has to be in accordance with the national regulations on drinking water in force; otherwise, damage to the device and a termination of the warranty can arise.
The cold DHW connection of the device must be fitted with a safety valve with the rated pressure of 0.6 MPa (6 bar).
For proper operation of expansion vessel, a suitable setting of the vessels operating pressure must be made. The pressure is set in regards to the pressure in the DHW system. The setting needs to be checked every 12 months.

NOTICE
The cold DHW connection must be fitted with an expansion vessel suitable for drinking water. The selection and installation must be in accordance with the standard DIN 4807 T5.

Installation Manual 27

Installation of Indoor Unit
1 Ball valve 2 Pressure reducing valve 3 Check valve 4 Safety valve 5 Expansion vessel 6 Charging pipe 7 Circulation pump 8 Cold sanitary water 9 Cold circulation water 10 Warm sanitary water

Adjusting the safety valve [MPa (bar)] System pressure [MPa (bar)] Volume of the DHW [L] Expansion vessel[L]

0.3 (3.0) 5

0.6 (6.0) 0.35 (3.5)
200 8

0.4 (4.0) 12

Setting the pressure for the expansion vessel for DHW
Expansion vessel for DHW is factory filled to a precharge pressure p0 with dry nitrogen. The pressure must be set depending on the settings of the pressure reducing valve on the DHW supply to the building. The pressure in the expansion vessel must be set according to the following formula:

P0 [MPa] = Prv [MPa] -0.02 [MPa], (P0 [bar]= Prv [bar] -0.2 [bar]) P0 ­ pressure in the expansion vessel Prv ­ setting of the pressure reducing valve

28 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit
Heating system
For unobstructed and safe operation, it is important to have a heat accumulator with a minimal volume of 40 l (integrated in the IDU). The accumulator is needed for hydraulic balancing, ensuring unobstructed flow and defrosting. A larger accumulator ensures a more balanced temperature of heating and more comfort.
NOTICE
When installing an additional larger heat accumulator, it is necessary to close the ball valve in the indoor unit. The location of the closing valve is indicated on the picture below.
C
C : Ball valve

Installation Manual 29

Installation of Indoor Unit

The heating system piping diagram

An example of the basic hydraulic scheme of the heating system is as shown below: For other circuits, see The Hydraulic Circuit Diagram Catalogue.

Scheme of the heating system in hydro modules with an integrated boiler

The elements on the scheme are marked in the following manner:

Legend of reading:

OC1

Mark of the element

MD1:Q7

Mark of the connecting clip on the input/output module – MD

Mark of the input/output module

! ! !

MD1

MD2

30 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit

ELEMENTS
PLC PST Spatial
MD1 T1 T2 OC1 OC2 MV2 OGK-1 OGK-2 MD2 T3 T4 OC3 OC4 MV3 MV4 OGK-3 OGK-4

CONNECTING TERMINALS
Q1-Q12 A1-A8 D1-D9

MARK

CHARACTERISTICS

1 Return for heating 2 Supply pipe for heating
Processing unit Pipe safety thermostat Connector on PLC Digital outputs of regulation ~ 230 V (input/output module MD1 and MD2) Analogue input (input/output module MD1 and MD2) Digital input (input/output module MD1 and MD2) Basic input/output module 1 Thermostat of heating cycle 1 Thermostat of heating cycle 2 Circulation pump of heating cycle 1 Circulation pump of heating cycle 2 Mixing valve of heating cycle 2 Heating cycle 1 Heating cycle 2 Expansion input/output module 2 Thermostat of heating cycle 3 Thermostat of heating cycle 4 Circulation pump of heating cycle 3 Circulation pump of heating cycle 4 Mixing valve of heating cycle 3 Mixing valve of heating cycle 4 Heating cycle 3 Heating cycle 4

MARK

CHARACTERISTICS Closing valve Circulation pump Closing valve with exhaust Drain valve with plug Water filter Expansion vessel Safety valve Non-return valve Magnetic separator of impurities Pipe safety thermostat

MARK

CHARACTERISTICS

Manometer

Temperature sensor

Thermometer

Consumer of heat / coolness

Automatic vent

3-way switching valve with EM drive

M

3-way mixing valve with EM drive

Supply pipe

Return line

! CAUTION
The supply line of each heating cycle must be fitted with a pipe safety thermostat that is connected sequentially with the circulation pump to safeguard against the inflow of high temperature.

Installation Manual 31

Installation of Indoor Unit
Charging of the heating system
! WARNING
Ensure that the venting of the system is strong to avoid malfunctions while operating.
! CAUTION
An expansion vessel of suitable dimensions must be fitted to the heating system. The expansion vessel must be regulated in accordance with standard EN 12828. For normal operation of the expansion vessel, the vessel’s working pressure should be appropriately adjusted. The settings have to be checked once in every 12 months. Consider the maximal operational pressure of the expansion vessel and filling the heating system.

A – Filling the system. B – Expansion vessel. C – Ball valve with exhaust. D – Air filling valve. H – Height of the heating system (from expansion vessel to the highest heating body in the building). Psv – Pressure of the safety valve.
NOTICE
If the pressure in the expansion system is P0, it results in malfunctioning of the heating system. The dimensioning of the expansion vessel must comply with the standard EN 12828 regulations.

32 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit
Setting the pressure for the expansion vessel P0
· Before filling the system with water, check and set the pressure P0. The expansion vessel is factory set to the pressure specified on its data label. For correct operation of the system, set the pressure P0 according to the equation below. The filling must not exceed the maximum operational pressure specified on the data label of the expansion vessel.
· Calculate the P0 pressure value with the help of the equation:
P0 [MPa] = Prv [MPa] -0.02 [MPa], (P0 [bar]= Prv [bar] -0.2 [bar]) P0 ­ pressure in the expansion vessel Prv ­ setting of the pressure reducing valve

! CAUTION
If the calculation shows a pressure lower than 0.1 MPa (1 bar), set the pressure of the expansion vessel to 0.1 MPa (1 bar). P0 [0.1 MPa (1 bar)] ­ pressure in the expansion vessel, P0 min [0.1 MPa (1 bar)] ­ minimum allowed pressure of the heating system, P0 max [0.1 MPa (1 bar)] ­ maximum allowed pressure of the heating system, H [m] ­ Height of the heating system.
· Set the amount of pressure in the expansion vessel by releasing or adding dry nitrogen. · Record the new value of the pressure P0 on the data label. · Open the closing valve of the expansion vessel carefully, open the vents and close the drain.
Filling the heating system
· Use the filling valve to fill the system with water of suitable quality (with anti-corrosion additives, etc.) to the pressure PF.
PF [MPa] = P0 [MPa] + 0.03 [MPa] (PF [bar] = P0 [bar] + 0.3 [bar])
Filling the system to the final pressure
· The final pressure of the system is determined by heating the system to the maximum heating temperature (thermal degassing).
· Turn off the circulation pumps, open the vents and vent the system. · Fill the system up to the final pressure which is 0.05 MPa (0.5 bar) lower than the venting pressure
of the safety valve. PE [MPa] Psv [MPa] – 0.05 [MPa] (PE [bar] Psv [bar] – 0.5 [bar])
PE ­ the final pressure of the system, PSV ­ the pressure of the safety valve.

Installation Manual 33

Installation of Indoor Unit
Preparing the heating system
Prepare the system according to one of the recommended hydraulic piping diagrams which is specified by the manufacturer of the device. This is the only way to ensure reliable and effective operation of the device. After connecting the device to the heating system, it is necessary to examine all circulating pumps and electric motor valves for correct functioning. The device must be connected to the heating system via rubber compensator or flexible pipes. The latter must not be under tension in final position, this would worsen the devices noise and vibration protection. In extreme cases this can also lead of damage of the device.
Quality of heating water The quality of the water used in the heating system is very important. The water from the water supply is mostly suitable for use in the heating system. In new systems, the impurities are a consequence of welding, soldering, dirty pipes (oil, grease), etc. In case the impurities start accumulating in the device this can worsen the flow and heat transfer, In extreme cases, the water freezes inside the pipes consequently destroying the system.
! WARNING
· To protect the device from intake and accumulation of dirt in the heat exchanger, you must install the strainer on the return line, inlet into the device.
· A galvanic disconnection between individual elements of the heating system (i.e. boiler, container …) is obligatory. In the case of using grey steel pipes in the heating system, it is necessary to degrease them (the interior of the pipe) before connecting them to the heat pump.
! CAUTION
The water in the heating system has to be in accordance with the requirements of standard VDI 2035 and must not contain microorganisms. The heating system has to be filled with soft water, which has been treated with anti-corrosion and antibacterial agents for preventing corrosion. Before filling, the heating system has to be cleaned of all impurities. The heating system has to be thoroughly vented. You must prevent air, including diffusion air entering the device. · If the product is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to
remove sludge and scale. · Installing sludge strainer in the water loop is very important to prevent performance degrade. · Chemical treatment to prevent rust should be performed by the installer. · It is strongly recommended to install an additional filter on the heating water circuit. Especially to
remove metallic particles from the heating piping, it is advisable to use a magnetic or cyclone filter, which can remove small particles. Small particles may damage the unit and CANNOT be removed by the standard filter of the heat pump system.

34 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit
NOTICE
To prevent damage to the components of the hydraulic system, we recommend the additional installation of Micro-bubble venting system. The micro bubbles in the system forms larger bubbles which eventually can cause corrosion of the system, result in system component malfunction and operation disturbance.

The table below represents the maximal allowed content of individual substances in the heating water and the influence of these on the heat exchanger. Do not use the heating water that contains any substance in concentrations ;resulting in corrosion of the heating system (influence “-“). Do not use heating water that contains two or more substances in concentrations ;resulting in corrosion in the heating system (influence “0”).

TYPE OF PRESENT SUBSTANCE
`Organic sediment Ammonia NH3
Chloride Allowed water hardness Electrical conductivity
Iron (Fe) removed
Free carbonic acid
Manganese (Mn) removed Nitrates (NO3) removed
pH value
Oxygen Hydrogen sulphide (H2S) HCO3- / SO42-
Hydrogen carbonate
Aluminium (Al) removed
Sulphates Sulphite (SO3) Chlorine (gas) (Cl2)

UNIT mg / L mg / L mg / L
°dH µS / cm mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L

CONCENTRATION
< 2 1 to 20

20 < 300 > 300 5 ­ 10 < 10 10 to 500 > 500 < 0.2 > 0.2
< 5 5 to 20
20 < 0.1 > 0.1 < 100 > 100 < 7.5 7.5 to 9 > 9 < 2 > 2 < 0.05 > 0.05 > 1 < 1 < 70 70 to 300 > 300 < 0.2 > 0.2 < 70 70 to 300 > 300 < 1 < 1 1 to 5 > 5

INFLUENCE TO THE HEAT CONDUCTOR 0 + 0 + 0
0 + + 0 + 0 + 0 + 0 0 + 0 + 0 + + 0 0 + 0 + 0 + 0 + + 0 –

Table: Influence of various aggressive substances in the heating water based up on the stability of stainless copper welded plate transmitters. (+ = no influence, 0 = danger of corrosion, – = corrosion use not permitted).

! CAUTION
The heating system has to be filled with water with the hardness scale between 5 °dH and 10 °dH. Malfunctions of the device caused by water hardness is not covered by the warranty.

Installation Manual 35

Installation of Indoor Unit
Electrical connection
Connect the indoor unit to the mains according to the instructions described in this chapter.
! WARNING
· The final electrical connection can only be performed by the person authorized by the manufacturer to ensure correct and efficient operation of the device. IT IS STRICTLY PROHIBITED FOR UNAUTHORIZED PERSONS TO TAMPER WITH THE ELECTRICAL CONNECTION OF THE DEVICE.
· The device must be connected to the mains, which has a built-in RCD residual-current device, switch type A.
· Pay attention to the characteristics of the inputs and outputs. Incorrect connection can lead to damage of the device.
! CAUTION
· Connecting the device to the electrical network has to be performed in accordance with the standards for connecting devices to the electrical network. The device has to be connected to the electrical network via the power supply which is provided for electrical installation under the regulations in force.
· The device must be connected to the mains using a cable with appropriate diameter (refer to paragraph 7 for more detailed information). The electrician defines the cable diameter according to the installation method, distance of the device from the main electrical cabinet and the power of the device.
· The total electrical power of the devices which are directly connected to the controller must not exceed 500 W. Else, separate power to the external devices is required connect only the control elements to the controller.
· Do not intertwine the communication cable (in accordance with the best engineering practices and regulations) with power cables.

36 Air-to-Water Heat Pump

Description of electrical connection board

Installation of Indoor Unit

ENGLISH

1 Input/output module MD1

2 Power supply ~ 230 V / 12 V

3

RESET button (Thermal protection of the electrical heater).

4 Connecting clips of external devices

5 Connecting clips of the power line 6 WEB module (Option)

7 Communication with outdoor unit (PI485)

8 Connecting clips spatial corrector KT-1(2)

9

Place of grounding the plated (braided) communication cable

10

Communication with outdoor unit and internal expansion unit TT3003.

11 Connecting clips neutral conductor

12 Electrical contactor

Installation Manual 37

Installation of Indoor Unit
Display – process module

1 6
2 5

4

3

1 Process module PLC

2

TE2 – connection with the input/output module (factory made).

3

TEX – communication with the ODI Gateway module PI485.

4

WM – connection with the WEB module (factory made).

5

RQ2 – connection for resetting the alarm (factory made).

6

RQ1 – connection of the signal for reporting an alarm (optional).

Schematic display of the control system – TT3000
! CAUTION
Connect the internal control unit TT3000 to external device with a plated cable; such that the plating of the cable is grounded on the envisioned spot ( ­functional earthing).

38 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit

Proper functioning requires a connection between the terminal clip X5 on the internal unit and connecting clips Bus_A [+] / Bus_B [-] / GND / 10 V on the Gateway PI485 module (Modbus Converter) on the external device.

ELEMENTS CONNECTING

MARK

TERMINALS

CHARACTERISTICS

B

Indoor unit TT3000

3

Basic input/output module MD1

TE1

Communication with I/O module MD2

TE2

Communication with the control electronics of the PLC screen module

JMP

Set-up of bridges (without)

X7

Connecting terminal for communication with expansion module MD2

A +, B- Communication

GND, 12 V Power supply

X6

Connecting terminal for the spatial correctors(optional)

A +, B- Communication

GND, 12 V Power supply

X5

Connecting terminal for communication with external module Gateway PI485 in Outdoor unit

BUS-A, BUS-B Communication

GND, 10 V Power supply

5

Web module

TW MODBUS Communication with PLC

TX MODUBUS Not in use

Ethernet Internet (Ethernet) connection

PLC

Process module

WM

Communication with Web module

TEX

Communication with outdoor unit ­ PI485 Gateway

TS

Communication with the spatial corrector

TE2

Communication with the basic V/I module MD1

D

Expansion wall unit TT3003

3b

Expansion input/output module MD2

TE1

Communication with the basic V/I module MD1

TE2

Not in use

JMP

Set-up of bridges (in first position)

X7

Connecting terminal for communication with I/O module MD1

A +, B- Communication

GND, 12 V Power supply

C

Gateway PI485 in the outdoor unit

PI485

External module Gateway PI485

BUS­A , BUS­B Communication with the control electronics of the Process module PLC

GND

Power supply

+ 10 V

Power supply

Installation Manual 39

Installation of Indoor Unit X5

BUS-A BUS-B GND 10V

40 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit
Connecting the internal control unit ­ TT3000
DANGER
Connecting the device to the power source can only be performed by a qualified installer in a voltage-free state!

As part of connecting the internal control unit to the connecting clips X1…X7, connect the following cables: · Power cable, · Communication cable for the external device, · Outdoor temperature sensor
Legend of cable connections to the connecting clips:

MARK

CONNECTING TERMINALS

X1 L1, L2, L3, N,

DIMENSIONS OF CABLE
Power cable

DESCRIPTION

A5, GND

2 x 0.75 mm2 Temperature sensor of outdoor temperature

X2 Q12, N

2 x 0.75 mm2 Additional external source

N, Q11,

3 x 0.75 mm2 Cooling valve

Q7, N,

3 x 0.75 mm2 Circulation pump of heating cycle 1 (optional)

Q8, N, X3
N, Q9+, Q10-

3 x 0.75 mm2 Circulation pump of heating cycle 2 (optional) 3 x 0.75 mm2 Mixing valve of heating cycle 2 (optional)

A7, GND

2 x 0.75 mm2 Temperature sensor of mixing-heating cycle 2 (optional)

D8, GND

2 x 0.75 mm2 Switch for heating/cooling (optional)

D7, GND X4
D6, GND

2 x 0.75 mm2 Thermostat of mixing cycle 2 (optional) 2 x 0.75 mm2 Thermostat of mixing cycle 1 (optional)

D5, GND

2 x 0.75 mm2 Remote on/off (optional)

X5

BUS­A, BUS ­ B, Cable H05VV-F Communication of the external control unit in the

GND, 10 V

4 x 0.75 mm2 WPLV device

X7 A+, B-, 12 V, GND 4 x 0.75 mm2 Communication with the expansion unit TT3003

5

Web module

TW MODBUS

UTP

Communication with PLC

TX MODBUS

/

Not in use

Ethernet

UTP

Internet connection

Installation Manual 41

Installation of Indoor Unit

5 TW TX
Ethernet

BUS-A BUS-B GND 10V

42 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit
! CAUTION
Make sure that all the cables are fed through the cable glands at the top of the unit. In that way you will ensure the tightness of the device.

In order to ensure water tightness of the cable routing follow the below instructions: 1. Make a small hole in the thin rubber membrane for each cable. 2. Push the cable through making sure the membrane isn’t damaged and that the membrane tightly
wraps the cable. 3. Pull the cable back for approximately 5 mm to make a positive seal.
! CAUTION
Make sure only one cable is fed through each cable gland hole to ensure a proper water tightness seal.

Installation Manual 43

Installation of Indoor Unit
Connection of power cable
! WARNING
Connecting the device to the power source can only be performed by a qualified installer in a voltage-free state!
! CAUTION
· The supply and communication cables have to be routed into the device and electrical cabinet through separate envisioned ducts and overflows which are installed before the cable clamp. This is to ensure that the cable is reliable and the electrical cabinet is protected from water penetration.
· Incorrect dimensioning of the power cable or defective terminal fuses of the device could lead to an overload of the safety elements on the power grid of the building which could lead to shortcircuits. Follow the requirements listed in this manual.
· Multi strand flexible cables must be connected to the indoor unit terminal blocks with crimped end sleeves.
Solid core wires do not use crimped end sleeves.

1 End sleeve 2 Multi strand flexible cable 3 Solid core wire
· The device comes with an electrical heater 3 x 2 kW. The power supply is connected according to your specifications.
a) ~ 230 V / 50 Hz on the connecting clips L1, N and PE, Connecting terminals of the supply cable
~ 230 V / 50 Hz For connecting the 2 kW heater, connect the connecting terminals in section A to L1, N and PE ( ). Input fuse: 16 A. For connecting the 4 kW heater, connect the connecting terminals in section B to L1, N and PE ( ). It is also necessary to connect the bridge from L1 to L2 Input fuse: 20 A.
Clip PE ( ) (yellow-green cable), clip N (blue cable), clips L1 (black or grey or brown cable).

44 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit
DANGER
In case of 1~230 V; 50 Hz connection it is not allowed to connect a secondary bridge between L2 to L3 or L1 to L3 in order to have 3×2 kW electrical heating capacity. Failure to comply may cause internal overheating and fire hazard.
b) 3N ~ 400 V / 50 Hz on the connecting clips L1, L2, L3, N and PE ( ). Connecting clips of the supply cable

X1

L3 / L2 / L1 L1 NN

Terminals L1, L2, L3 (3 x black or black, grey, brown cable)
Terminal N (blue cable) Terminal PE ( ) (yellow-green cable) Input fuse: 3 x 16 A

X5

Connecting the communication cable
The communication cable is intended for the communication between the indoor and outdoor. For the dimensions of the communication cable, see technical data.
! CAUTION
It is important to correctly connect the cable to terminal block X5.
The communication cable connects the external device to the terminal terminals X5 on the indoor unit. It is necessary to connect the terminals BUS­A, BUS­B and GND and 10 V.
BUS-A BUS-B GND 10 V
DANGER
The communication connection is considered as a low-voltage connection. The type of the communication cable must be H05VV-F 4 x 0.75 mm2 (IEC 60227-53) or similar.

Installation Manual 45

Installation of Indoor Unit
Electrical scheme

46 Air-to-Water Heat Pump

ENGLISH

Installation of Indoor Unit

ELEMENT X1 X2
X3
X4
X5 X6 X7 1 2 3 4 5
6 7 8 9
10
11 12 13 14 C TV RC

TERMINAL BLOCK L1, L2, L3, N, PE A5, GND Q11, N Q12, N, PE Q7, N, PE Q8, N, PE N, Q9+, Q10A7, GND D8, GND D7, GND D6, GND D5, GND BUS­A, BUS ­ B, GND, 10 V A+, B-, 12 V, GND A+, B-, 12 V, GND
D4
TW Modbus TX Modbus Ethernet A6 Q3 A1
WM TEX TS TE2 RQ1 RQ2
L N
VV+ A3 A4
A2

DESCRIPTION Power cable Temperature sensor for external temperature Cooling valve Additional external source Circulation pump of heating cycle 1 (optional) Circulation pump of heating cycle 2 (optional) Mixing valve of heating cycle 2 (optional) Temperature sensor of mixing-heating cycle 2 (optional) Switch heating/cooling and/or PV signal (optional) Thermostat of heating cycle 2 (optional) Thermostat of heating cycle 1 (optional) Remote on/off (optional) Communication with the ODU Communication spatial corrector (optional) Communication with expansion unit TT3003 Flow electrical heater Tree way valve for switching between heating and DHW Basic input/output module MD1 Flow switch Web module (OPTIONAL) Communication with PLC Not in use Internet connection Temperature sensor of the supply pipe Main circulation pump Temperature sensor of the return line Process module – PLC Communication with the Web module MODBUS communication with the ODU Communication with the spatial corrector Communication with the basic module MD1 ALARM dry contact RESET dry contact Power supply ~ 230 V / 12 V Phase 230 V 50 Hz Neutral 230 V 50 Hz Protective earth GND 12 V dc Temperature sensor refrigerant pipe ­ condenser inlet. Temperature sensor refrigerant pipe ­ condenser outlet. Membrane Keyboard Temperature sensor of sanitary water Electrical contactor of the electrical heater Thermal protection of the electrical heater RC Filter.

Installation Manual 47

Installation of Indoor Unit
Pump capacity
AHNW16606B0 Pump model : Yonos PARA RS 25/7.0 PWM1 Ku

! WARNING
Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit.

48 Air-to-Water Heat Pump

ENGLISH

Piping and Wiring for Outdoor Unit

Piping and Wiring for Outdoor Unit

Procedures about refrigerant piping and electric wiring of the outdoor unit are described in this chapter. Most of procedures are similar to those of LG Air Conditioner.

Refrigerant Piping
Before starting refrigerant piping, constraints in pipe length and elevation should be examined. After meeting all constraints, some preparations are required to proceed. Initially, connect the pipe to both the indoor and outdoor units.

Constraints in Pipe Length and Elevation

Outdoor model (kW)
9 12 / 14 / 16

Factory Charge (g)
1 800 2 300

Extra charge* (g)

Additional charge for long piping (g/m, > 7.5 m)

Pipe Diameter (inch(mm))
Gas Liquid

800 1 200

40

5/8′ 3/8′ (15.88) (9.52)

Length A (m)

Standard Max.

7.5

50

Elevation B (m) Max.
30

• Extra charge is required, because plate-heat-exchanger of HN1616T.NB0 indoor unit has much more volume than standard wall-hung indoor unit. Factory-charge is based on standard indoor unit.

Indoor unit

A trap is not necessary

when the outdoor unit is

installed in a higher

position than the indoor

A

unit.

Outdoor unit Oil trap

Outdoor unit

A A

B

Outdoor unit

B

B

Indoor unit

Indoor unit

! CAUTION
1. Improper refrigerant charge may result in malfunctioning. 2. Standard pipe length is 7.5 m If the pipe length is longer than 7.5 m, additional charge of the refrigerant is
required according to the table. · (Example) If 16 kW model is installed at a distance of 50m, additional refrigerant should be added
according to following formula : 1 200 g + (50-7.5) x 40g = 2 900 g 3. Rated capacity of the product is based on standard length and maximum allowable length is based on the
product reliability in the operation. 4. An oil trap should be installed every 5~7 meters, if IDU and ODU differ in elevation by more than 10 m. 5. A trap is not necessary if the outdoor unit is installed at a higher level than the indoor unit.
Note: Fill in the f-gas Label attached on outdoor about the quantity of the fluorinated greenhouse gases (This note about f-gas label may not apply depending on your product type or market.) Manufacturing site (See Model Name label) Installation site (If possible being placed adjacent to the service points for the addition or removal of refrigerant) The total Charge ( + )

Installation Manual 49

Piping and Wiring for Outdoor Unit

Preparation for Piping
Preparation for piping is shown in the below 5 steps. As main cause of refrigerant leakage is due to defects in flaring work, please carry out the appropriate flaring work as shown below:

Step 1. Cut the pipes and the cable.
· Use the accessory piping kit or the pipes purchased locally.
· Measure the distance between the indoor unit and the outdoor unit.
· Cut the pipes a little longer than the measured distance.

Copper tube

90°

Slanted Uneven Rough

Step 2. Burrs removal.
· Remove all burrs completely from cross sectional cut of the pipe.
· Put the rear end of the pipe in the downward direction to prevent drop of burrs from entering the pipe.

Pipe Reamer
Point down

Step 3. Insert flare nut.
· Take out flare nuts attached to the indoor unit and the outdoor unit.
· Insert flare nuts into the burr-removed pipe. · If flaring work is finished, it is impossible to insert
nuts into the pipe.

Flare nut Copper tube

Step 4. Flaring work.
· Carry out flaring work using dedicated flaring tool for R-410A refrigerant as shown below.
· Firmly hold the copper tube in a bar(or die) as per the dimensions in the table above.

Pipe diameter Inch (mm)
Ø 1/4 (Ø 6.35) Ø 3/8 (Ø 9.52) Ø 1/2 (Ø 12.7) Ø 5/8 (Ø 15.88) Ø 3/4 (Ø 19.05)

A inch (mm)

Wing nut type

Clutch type

0.04~0.05 (1.1~1.3)

0.06~0.07 (1.5~1.7) 0.06~0.07 (1.6~1.8) 0.06~0.07 (1.6~1.8)

0~0.02 (0~0.5)

0.07~0.08 (1.9~2.1)

Bar

“A”