LG HU161H INSTALLATION MANUAL

INSTALLATION MANUAL

AIR CONDITIONER

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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 (For High Temperature)

[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-

gu, Changwon-si, Gyeongsangnam-do, KOREA

For more information, Refer to the CD or LG Web site (www.lg.com).

www.lg.com

P/NO : MFL67212813

AWHP Installation Manual
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS..............................................................................................................	3
2. INSTALLATION PARTS ................................................................................................................	8
3. GENERAL INFORMATION ..........................................................................................................	9
4. INSTALLATION...........................................................................................................................	10
TRANSPORTING THE UNIT ......................................................................................................	10
SELECTION OF THE BEST LOCATION.....................................................................................	11
INSTALLATION SPACE ..............................................................................................................	12
COLLECTIVE / CONTINUOUS INSTALLATION FOR ROOF TOP USE....................................	16
FOUNDATION FOR INSTALLATION ..........................................................................................	17
WATER PIPING AND WATER CIRCUIT CONNECTION............................................................	18
SANITARY WATER TANK AND SANITARY WATER TANK KIT .................................................	22
INSTALLATION SCENES ...........................................................................................................	23
REFRIGERANT PIPING .............................................................................................................	25
FLARE SHAPE AND FLARE NUT TIGHTENING TORQUE.......................................................	26
OPENING SHUTOFF VALVE......................................................................................................	26
CLOSING SHUTOFF VALVE ......................................................................................................	26
CONNECTING THE PIPES TO THE OUTDOOR UNIT..............................................................	27
CAUTIONS FOR HANDLING SERVICE VALVE.........................................................................	28
SELECTION OF REFRIGERANT PIPING..................................................................................	29
THE AMOUNT OF REFRIGERANT............................................................................................	29
LEAK TEST AND VACUUM DRYING .........................................................................................	30
HOW TO CONNECT WIRINGS ..................................................................................................	33
CONNECTION METHOD OF THE CONNECTING CABLE (EXAMPLE)...................................	34
CONNECTING CABLES.............................................................................................................	38
COMMUNICATION AND POWER CABLE..................................................................................	39
WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY........................................	40
5. ACCESSORIES INSTALLATION................................................................................................	41
LOCATION OF ACCESSORIES AND EXTERNAL PARTS CONNECTION ...............................	41
MAIN PUMP CONNECTION.......................................................................................................	44
WATER TANK TEMPERATURE SENSOR CONNECTION ........................................................	44
THERMOSTAT............................................................................................................................	45
REMOTE TEMPERATURE SENSOR.........................................................................................	48
3WAY VALVE ..............................................................................................................................	49
DRY CONTACT...........................................................................................................................	51
6. SYSTEM SET-UP ........................................................................................................................	52
DIP SWITCH SETTING...............................................................................................................	52
INSTALLER SETTING ................................................................................................................	59
7. TEST RUN...................................................................................................................................	67
CHECKS BEFORE TEST RUN...................................................................................................	68
TEST RUN PROCEDURE ..........................................................................................................	68
CAUTION BEFORE OPERATION TEST ....................................................................................	69
OPERATION TEST OF WATER PIPE ........................................................................................	68
TROUBLESHOOTING ................................................................................................................	69

2

Safety Precautions

1. Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

νBe sure to read before installing the unit.

νBe sure to observe the cautions specified here as they include important items related to safety.

νIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

ν Meanings of symbols used in this manual are as shown below.

Be sure not to do.

Be sure to follow the instruction.

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ν Installation

Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

•There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

•There is risk of fire or electric shock.

	Always ground the unit.
For electrical work,
contact the dealer,
seller, a qualified elec-
trician, or an Author-
ized Service Center.
• There is risk of fire or	• There is risk of fire or
electric shock.	electric shock.

Always install a dedi-	Use the correctly rated
cated circuit and	breaker or fuse.
breaker.
• Improper wiring or instal-	• There is risk of fire or
lation may cause fire or	electric.
electric shock.

Installation Manual 3

Safety Precautions

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.

•There is risk of fire or electric shock.

•There is risk of fire, electric shock, explosion, or injury.

•Almost the antifreeze is a toxic product.

The refrigerant of this unit	For installation, always
is R134a and the unit is	contact the dealer or an
connected to the outdoor	Authorized Service
unit where R410A refriger-	Center.
ant is used.

Do not install the unit on a defective installation stand.

•The installation tool such as manifold gauge should comply with R410A.

•There is risk of fire, electric shock, explosion, or injury.

•It may cause injury, accident, or damage to the unit.

Be sure the installation	Do not install the water
area does not deterio-	pipe system as Open
rate with age.	loop type.
• If the base collapses, the	• It may cause failure of
unit could fall with it,	unit.
causing property dam-
age, unit failure, and per-
sonal injury.

Do not install the Indoor Unit outside.

•It may cause damage to the unit.

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.

• There is the risk of death, injury, fire or explosion.

4

Safety Precautions

ν Operation
Take care to ensure		Do not place anything
that power cable could		on the power cable.
not be pulled out or
damaged during opera-
tion.
• There is risk of fire or		• There is risk of fire or
electric shock.		electric shock.

Do not touch (operate)	Do not place a heater
the unit with wet hands.	or other appliances
	near the power cable.
• There is risk of fire or	• There is risk of fire or
electric shock.	electric shock.

Do not plug or unplug the power supply plug during operation.

•There is risk of fire or electric shock.

Do not allow water to run into electric parts.

•There is risk of fire, failure of the unit, or electric shock.

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Do not store or use flammable gas or combustibles near the unit.

•There is risk of fire or failure of unit.

If strange sounds, or small or smoke comes from unit, turn the breaker off or disconnect the power supply cable.

•There is risk of electric shock or fire.

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.

• It may cause damage to	• There is risk of explosion
the unit.	or fire.

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.)

• There is risk of property	• There is risk of physical
damage, failure of unit,	injury, electric shock, or
or electric shock.	unit failure.

Installation Manual 5

Safety Precautions

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.

Ventilate the unit from time to time when operating it together with a stove, etc.

•There is risk of fire or electric shock.

• There is risk of fire, elec-	• There is risk of fire or
tric shock, or unit dam-	electric shock.
age.

Turn the main power off when cleaning or maintaining the unit.

Take care to ensure	For installation, always
that nobody could step	contact the dealer or an
on or fall onto the unit.	Authorized Service
	Center.

•There is risk of electric shock.

• This could result in per-	• There is risk of fire, elec-
sonal injury and unit	tric shock, explosion, or
damage.	injury.

If the unit is not used for long time, we strongly recommend not to switch off the power supply to the unit.

• There is risk of water freezing.

6

Safety Precautions

ν Installation
		Keep level even when		Use two or more people
Always check for gas
(refrigerant) leakage		installing the unit.		to lift and transport the
after installation or re-				unit.
pair of unit.
• Low refrigerant levels		• To avoid vibration or		• Avoid personal injury.
may cause failure of unit.		water leakage.

ν Operation

Do not use the unit for special purposes, such as preserving foods, works of art, etc.

•There is risk of damage or loss of property.

Use a soft cloth to	Do not step on or put
clean.	anything on the unit.
Do not use harsh deter-
gents, solvents, etc.
• There is risk of fire, elec-	• There is risk of personal
tric shock, or damage to	injury and failure of unit.
the plastic parts of the
unit.

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Use a firm stool or ladder when cleaning or maintaining the unit.

• Be careful and avoid personal injury.

Installation Manual 7

Installation Parts

2. Installation Parts

Before starting installation, please make it sure that all parts are found inside the unit box.

Item				Image		Quantity
			INSTALLATION MANUAL
Installation Manual		AIR				1
		CONDITIONER
			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 (For High Temperature)
			[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared
				Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands
			[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-
				gu, Changwon-si, Gyeongsangnam-do, KOREA
			For more information, Refer to the CD or LG Web site (www.lg.com).
				www.lg.com
			P/NO : MFL67212813
		OWNER’S MANUAL
Owner's Manual		AIR				1
		CONDITIONER
		Please read this manual carefully before operating
		your set and retain it for future reference.
		Air-to-Water Heat Pump (For High Temperature)
		[Representative] LG Electronics Inc. EU Representative :
				LG Electronics European Shared Service Center B.V.
				Krijgsman 1, 1186 DM Amstelveen, The Netherlands
		[Manufacturer]		LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro,
				Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA
		For more information, Refer to the CD or LG Web site (www.lg.com).
				www.lg.com
		P/NO : MFL67212706
Remote Controller						1
/ Cable

Sensor Holder

1

Water Tank

1

Temperature Sensor

Strainer

1

Screw

4

8

General Information

3. General Information

With advanced inverter technology, Air-to water Heat Pump (For High Temperature) is suitable for applications like under floor heating, and hot water generation. By Interfacing to various accessories user can customize the range of the application.

Model Information

Model name and related information

		Type			Air-to water Heat Pump (For High Temperature)
	Model			Unit	AHNW166T0 (Indoor)		AHUW166T0 (Outdoor)
Power Supply				Ø, V, Hz	1, 220-240, 50
				kW		16
Capacity		Heating		kcal/h	13,760
				Btu/h	54,600
Net Weight				kg(lbs)	88(194)		98(216)
Refrigerant		Type			R134a		R410A
		Amount		kg(lbs)	2.3(5)		3.5(7.7)
Noise Level				dB	43		53
Maximum Running Current				A	20		19

*1 : Tested under Eurovent Heating condition

(water temperature 55 (131 ) → 65 (149 ) at outdoor ambient temperature 7 (44 ) / 6 (42 ))

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Installation Manual 9

Installation

4. Installation

Transporting the Unit

•When carrying the suspended unit, pass the ropes between legs of base panel under the unit.

•Always lift the unit with ropes attached at four points so that impact is not applied to the unit.

•Attach the ropes to the unit at an angle of 40° or less.

•Use only accessories and parts which are of the designated specification when installing.

1) Indoor Unit

Sub line

40º or less

Line supporter

2) Outdoor Unit

Air outlet grille	Corner	Intake hole

Sub line

Handle

Always hold the unit by the corners, as holding

A 40° or less

it by the side intake holes on the casing may

cause them to deform.

10

Installation

CAUTION

Be very careful while carrying the unit.

-Do not have only one person carry the unit if it is more than 20 kg (44.1 lbs).

-PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.

-Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise plastic packaging bag may suffocate children to death.

-When carrying the unit, be sure to support it at 4-points. Carrying and lifting the unit with 3-point support may make it unstable, resulting in a fall.

Selection of the best location

1) Indoor

1. Select space for installing Indoor Unit, which will meet the following conditions:

•The place where the unit shall be installed inside.

•The place shall easily bear a load exceeding four times of the unit weight.

•The place where the unit shall be leveled.

•The place shall allow easy water drainage.

•The place where the unit shall be connected to the outdoor unit.

•The place where the unit is not affected by an electrical noise.

•The place where there should not be any heat source or steam near the unit.

2)Outdoor

1.Select space for installing outdoor unit, which will meet the following conditions:

•No direct thermal radiation from other heat sources

•No possibility of annoying neighbors by noise from unit

•No exposition to strong wind

•With strength which bears weight of unit

•Note that drain flows out of unit when heating

•With space for air passage and service work shown next

•Because of the possibility of fire, do not install unit to the space where generation, inflow, stagnation, and leakage of combustible gas is expected.

•Avoid unit installation in a place where acidic solution and spray (sulfur) are often used.

•Do not use unit under any special environment where oil, steam and sulfuric gas exist.

•It is recommended to fence round the outdoor unit in order to prevent any person or animal from accessing the outdoor unit.

•If installation site is area of heavy snowfall, then the following directions should be observed.

-Make the foundation as high as possible.

-Fit a snow protection hood.

2.Select installation location considering following conditions to avoid bad condition when additionally performing defrost operation.

•Install the outdoor unit at a place well ventilated and having a lot of sunshine in case of installing the product at a place with a high humidity in winter (near beach, coast, lake, etc). (Ex) Rooftop where sunshine always shines.

•Performance of heating will be reduced and preheat time of the indoor unit may be lengthened in case of installing the outdoor unit in winter at following location:

-Shade position with a narrow space

-Location with much moisture in neighboring floor.

-Location with much humidity around.

-Location where ventilation is good.

It is recommended to install the outdoor unit at a place with a lot of sunshine as possible as.

-Location where water gathers since the floor is not even.

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Installation Manual 11

Installation

3.When installing the outdoor unit in a place that is constantly exposed to a strong wind like a coast or on a high story of a building, secure a normal fan operation by using a duct or a wind shield.

•Install the unit so that its discharge port faces to the wall of the building. Keep a distance 500mm or more between the unit and the wall surface.

•Supposing the wind direction during the operation season of the air conditioner, install the unit so that the discharge port is set at right angle to the wind direction.

Strong wind

Strong wind

Blown air

500

Air inlet grille

Installation Space

1)Indoor Unit

•The following values are the least space for installation. If any service area is needed for service according to field circumstance, obtain enough service space.

•The unit of values is mm.

300

520

400

Piping space

330

(front side)

Service space (left side)

Service space

600

(front side)

(Unit: mm)

space

(Unit: mm)

<![if ! IE]>

<![endif]>100 100 1080 100

<![if ! IE]>

<![endif]>1080

H-Beam supporter

		<![if ! IE]> <![endif]>100			<![if ! IE]> <![endif]>200

12

Installation

2) Outdoor Unit

• The following values are the least space for installation.

If any service area is needed for service according to field circumstance, obtain enough service

space.	<![if ! IE]> <![endif]>ENGLISH
• The unit of values is mm.

νIn case of obstacles on the suction side

1.Stand alone installation

or	100
	more
		or
100			100		or
					100
more			more
					more
				or

less	less
or	or
500	500

<![if ! IE]> <![endif]>1000 or more

	150	or
or	more		150
100
more				or
			more

<![if ! IE]>

<![endif]>1000 or more

or
150
more	[Unit:mm]

2. Collective installation

orless 500

1000	or				1000	or
more		100			more		100
			or					or
		more					more
			200	or	or			200
					300
			more					more	or
					more

<![if ! IE]>

<![endif]>1000 or more

or 300 more

[Unit:mm]

Installation Manual 13

Installation

νIn case of obstacles on the discharge side

1.Stand alone installation

ormore 500

2. Collective installation

orless 500

ormore 500

orless 500

<![if ! IE]>

<![endif]>1000 or more

<![if ! IE]>

<![endif]>1000 or more

100	or	100	or
more		more
	more		more
			or
	or		1000	[Unit:mm]
	1000

νIn case of obstacles on the suction and the discharge side

Obstacle height of discharge side is higher than the unit

1.Stand alone installation

L > H	L > H
	<![if ! IE]> <![endif]>H
<![if ! IE]> <![endif]>L
	or
	100
	more
	or
	more
	500

<![if ! IE]>

<![endif]>H

orless 500

<![if ! IE]>

<![endif]>or1000more

	<![if ! IE]> <![endif]>L
	or
	250
or	more
1000	[Unit:mm]
more

14

Installation

2. Collective installation

L > H

L > H

<![if ! IE]> <![endif]>or1000 more

<![if ! IE]> <![endif]>L

<![if ! IE]> <![endif]>H

<![if ! IE]> <![endif]>L

100

or

more

100

or

more

or

or

300

300

more

more

more

or

1000

or

[Unit:mm]

more

1250

Obstacle height of discharge side is lower than the unit

1.Stand alone installation

L ≤ H

<![if ! IE]>

<![endif]>L

	<![if ! IE]> <![endif]>H
	or
	100
or	more
500
more

L ≤ H

<![if ! IE]>

<![endif]>L

orless 500 or 1000 more

<![if ! IE]>

<![endif]>H

	or
	300
or	more
1000
more

2. Collective installation

L ≤ H

									<![if ! IE]> <![endif]>H
<![if ! IE]> <![endif]>L
		100		or	more				or
								300
						or		more
						1500
						more

		less	<![if ! IE]> <![endif]>1000or more
L ≤ H		or
	500
			<![if ! IE]> <![endif]>H

<![if ! IE]>

<![endif]>L

100	or	more

or 1500 more

or 300 more

[Unit:mm]

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Installation Manual 15

Installation

Collective / Continuous Installation for roof top use

Space required for collective installation and continuous installation: When installing several units, leave space between each block as shown below considering passage for air and people.

1. One row of stand alone installation

	or
	200
or	more
1000
more

2.Rows of collective installation (2 or more)

•L should be smaller than H

								or
							100
					or			more
2000
				more

[Unit:mm]

L ≤ H

	100	or
	more
<![if ! IE]> <![endif]>H	or
or	600
	more
1500
more

	<![if ! IE]> <![endif]>L
	or
	300
or	more
3000
more
	[Unit:mm]

Seasonal wind and cautions in winter

•Sufficient measures are required in a snow area or severe cold area in winter so that product can be operated well.

•Get ready for seasonal wind or snow in winter even in other areas.

•Install a suction and discharge duct not to let in snow or rain.

•Install the outdoor unit not to 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 at snowy area, attach the hood to the system.

•Install the outdoor unit at the higher installation console by 50cm than the average snowfall (annual average snowfall) if it is installed at the area with much snowfall.

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.

16

Installation

Foundation for Installation

1) Indoor Unit

•Fix the unit tightly with bolts as shown below so that the unit will not fall down due to earthquake.

•Noise and vibration may occur from the floor or wall since vibration is transferred through the installation part depending on installation status. Thus, use anti-vibration materials (cushion pad) fully (The base pad shall be more than 200 mm (7-7/8 inch)).

	Anti-vibration material
	Concrete	3 or more screw	Nut
	base
		threads of the
	Support	2 bolts must be	Spring washer
		shown	Flat washer
354	<![if ! IE]> <![endif]>75
			Anchor bolt

392		(Unit: mm)

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2)Outdoor Unit

•Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation.

•Fix the unit securely by means of the foundation bolts. (Prepare 4sets of M12 foundation bolts, nuts and washers each which are available on the market.)

•It is best to screw in the foundation bolts until their length are 20mm from the foundation surface.

	Spring washer		Anti-vibration
			materials
				Four bolt are
	Frame	Nut	Concrete
			base	required
H-Beam
				3 thread ridges
			<![if ! IE]> <![endif]>75
<![if ! IE]> <![endif]>100	<![if ! IE]> <![endif]>75		<![if ! IE]> <![endif]>200	<![if ! IE]> <![endif]>200

[Unit:mm]

Foundation bolt executing method

Installation Manual 17

Installation

Water Piping and Water Circuit Connection

General Considerations

Followings should be considered before beginning water circuit connection.

•Service space should be secured.

•Water pipes and connections should be cleaned using water.

•Space for installing external water pump should be provided.

•Never connect electric power while proceeding water charging.

Water Piping and Water Circuit Connection

While installing water pipes, followings should be considered :

•While inserting or putting water pipes, close the end of the pipe with pipe cap to avoid dust entering.

•When cutting or welding the pipe, always be careful that inner section of the pipe should not be defective. For example, no weldments or no burrs are found inside the pipe.

•Pipe fittings (e.g. L-shape elbow, T-shape tee, diameter reducer, etc) should be tightened strongly to be free from water leakage.

•Connected sections should be leakage-proof treatment by applying tefron tape, rubber bushing, sealant solution, etc.

•Appropriate tools and tooling methods should be applied to prevent mechanical breakage of the connections.

•Operation time of flow valve(e.g. 3way valve) should be less than 90 seconds.

•Pipe is insulated to prevent heat loss to external environment.

18

Installation

Water cycle

* For the water pipe system, use the closed loop type.

1.	For the parts of the water pipe system, use the parts above the design water pressure.					<![if ! IE]> <![endif]>ENGLISH
2.	For the water pipe, do not use steel pipe.
3. To replace the connected device easily, install the union joint (2).
4.	Install the service port (3) to clean the heat exchanger at each inlet and outlet of the water pipe.
5.	Always install a strainer (4) at the inlet of the water pipe.
	- For the strainer, use one with 50 mesh or above with measurement diameter of 0.4mm or
	less. (Exclude other net)
	- Always install the strainer on the horizontal pipe.
	(When dirt, trash, rusted pieces get into the water pipe system, it can cause problems to the
	product by corroding the metallic material.)
6.	Install the air vent (5) at the top of the water pipe.
7.	Install a thermometer (6) and pressure gauge (7) at the inlet and outlet of the water pipe.
8.	Install the drain valve (8) that can be used for draining the water inside when replacing the part
	or providing service.
9.	Install the shut-off valve (9) to block the water by closing the valve when replacing the part or
	cleaning.
10. Apply insulated treatment on the exterior of the water pipe so that water drops do not form.
11. Install excessive pressure safety valve (10) that meets the design water pressure to prevent
	unit or water pipe damage at the pressure increase inside the water pipe system.
	On-site installation (1)
	Air vent (5)		Pressure gauge(7)		Shut-off valve (9)
	Union joint (2)	Thermometer (6)		Excessive pressure
				safety valve(10)
					Outlet Water
					[Install water tank]
					or
					[Install floor heating]
					Inlet water
	P/T Service port(3)	Strainer(4)			Drain valve(8)

12.There is a drain hole at the bottom of prevent risk of electric shock caused by leakage of water.

Installation Manual 19

Installation

* Water tank & Floor heating installation

1.Use the pump (1) with sufficient capacity to assure loss of overall water pressure and to supply water to the Indoor Unit.

2.Install the shut-off valve (2) on both sides of the pump to clean and repair the pump.

3.Install the flexible joint (3) to prevent noise and vibration transferred from the pump.

4.Install the pressure gauge (4) to monitor the water pressure from water tank. (Option)

5.Install the expansion tank (5) to accommodate the water contracted or expanded from the temperature difference and to supply the water.

6.After the installation of water pipe system is completed, open the water supply valve (6) and supply the water.

7.When installing the water tank, insert the water tank temperature sensor (7) to measure the temperature of the water inside the tank.

-For the water tank temperature sensor, use the sensor supplied on the product.

-When heating the floor, measure the temperature by using the remote controller or remote temperature sensor (Separately sold).

8.Use the water tank (9) with the heat exchange coil (8) installed so that the heat can be exchanged sufficiently inside the tank.

Installation of water tank

water tank temperature sensor (7)

Heat shut-off valve (2) Expansion tank (5) exchange

coil (8)

Pump (1)

water tank (9)

Pressure gauge (4)

Flexible joint (3)

(Indirect heating type)

Water supply valve (6)

Installation of floor heating

shut-off valve (2)

Expansion tank (5)

Pump (1)

Floor heating coil

Pressure gauge (4)

(Radiator, FCU can be used)

Flexible joint (3)

Water supply valve (6)

20

Installation

Strainer

- Use the 50 mesh strainer.
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- Check the strainer direction and assemble on the inlet hole (Refer to picture)
- Wrap the Teflon tape on the screw thread of the water pipe for more than 15 times for assembly.
- Install the service port facing downward. (Within left/right 45 degrees)
- Check if there is any leakage on the connecting part.
- Clean the strainer periodically. (Once a year or more frequent)
Water In

45°	Strainer

Front

Side

Installation Manual 21

Installation

Sanitary Water Tank and Sanitary Water Tank Kit

Installation Condition

Installing sanitary water tank requires following considerations :

•Sanitary water tank should be located at the flat place.

•Water quality should comply with EN 98/83 EC Directives.

•As this water tank is sanitary water tank (indirect heat exchange), do not use anti water-freezing treatment like ethylene grycol.

•It is highly recommend to wash out inside of the sanitary water tank after installation. It ensures generating clean hot water.

•Near the sanitary water tank, there should be water supply and water drain for easy access and maintenance.

Water Tank

Temperature Sensor

Water Out

Water In

Sanitary

Water Tank

Water tank temperature sensor connection

	Process PT 1/2 inch
	female bolt
	Water Tank	Sensor	Inside water tank
	Temperature Sensor	holder

PT 1/2 inch

•If hot water mode is used, make sure to install sensor to water tank.

•Make PT15A female bolt hole in the water tank, and install sensor in the water tank.

•Push the sensor into the hole of the sensor holder cap.

•Lock the sensor holder cap.

Water tank outer wall

22