LG PHLTB INSTALLATION MANUAL

INSTALLATION MANUAL

AIR

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.

(Sanitary Water Tank Kit)

PHLTB

www.lg.com

P/NO : MFL65222201

Connecting Sanitary Water Tank

		A
Outdoor	Indoor
	R
	T	E/T
	E/H	W/P
S

						Fan coil unit	Floor heating loop Radiator
		Hot water		Sanitary
					water
					tank
		City water
		High Temperature				Room Thermostat(Field supply)					3way valve
		Low Temperature				2way valve					(Field supply)
											Remote Controller
		Expansion Tank				(Field supply)		R
	E/T					By-pass valve(Field supply)					Strainer(Mesh : 1mm*1mm)
		(Field supply)						S
		Air Vent				Electric Heater					Water Pump
	A			E/H				W/P			(Field supply)

Note:

•Sanitary water tank

-It should be equipped with internal electric heater to generate sufficient heat energy in very cold season.

•3way valve

-Refer to the installation manual of to install the 3way valve.

supports following 3way valve.

Type	Power	Operating Mode	Supported
SPDT	1~ 230 V	Selecting “Flow A” between	Yes
3-wire		“Flow A” and “Flow B” (2)
(1)		Selecting “Flow B” between	Yes
		“Flow A” and “Flow B” (3)

(1): SPDT = Single Pole Double Throw. Three wires consist of Live1 (for selecting Flow A), Live 2 (for selecting Flow B), and Neutral (for common).

(2): Flow A means ʻwater flow from the unit to under floor water circuit.ʼ

(3): Flow B means ʻwater flow from the unit to sanitary water tank.ʼ

Safety Precautions

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

Be sure to read before installing the unit.

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

	Do not use a defective or underrated	For electrical work, contact the			Always ground the unit.
	circuit breaker. Use this appliance on	dealer, seller, a qualified electrician,
	a dedicated circuit.	or an Authorized Service Center.
	• There is risk of fire or electric shock.	• There is risk of fire or electric shock.			• There is risk of fire or electric shock.
	Install the panel and the cover	Always install a dedicated			Use the correctly rated breaker
	of control box securely.	circuit and breaker.			or fuse.
	• There is risk of fire or electric shock.	• Improper wiring or installation may			• There is risk of fire or electric.
		cause fire or electric shock.
	Do not modify or extend the	Do not install, remove, or			Be cautious when unpacking
	power cable.	reinstall the unit by yourself			and installing the unit.
		(customer).
	• There is risk of fire or electric shock.	• There is risk of fire, electric shock,			• Sharp edges could cause injury. Especially careful
		explosion, or injury.			on the unit edges and the fins on the heat exchanger.
	For antifreeze, always contact the dealer or an			Be sure the installation area does not
	authorized service center.			deteriorate with age.
	• Almost the antifreeze is a toxic product.		• If the base collapses, the unit could fall with it, causing
				property damage, unit failure, and personal injury.
	For installation, always contact the dealer or an		Do not install the unit on a defective installation
	Authorized Service Center.		stand.
	• There is risk of fire, electric shock, explosion, or injury.		• It may cause injury, accident, or damage to the unit.
	Keep level even when installing the unit.			Use two or more people to lift and transport the
				unit.
	• To avoid vibration or water leakage.		• Avoid personal injury.
					2

Parts

1Sensor (Thermistor)

2Water tank kit

3Installation Manual

4Multi harness (only AHBWXXXA0 model use)

1	2	3
		Terminal
		Block 3
	MCCB
		4
	Magnetic switch
	contact

Wiring Diagram

	YL	RD
BR	A1	A2 BL
	L1	L3
	T1	T3
BR		BL
	Magnet switch

Installation Method

To establish sanitary water circuit, 3way valve and sanitary water tank kit is required.

How to Install Sanitary Water Tank Kit

Follow below procedures Step 1 ~ Step 5.

Step 1. Uncover the water tank kit and locate it on the wall.

Step 2. Connect the water tank kit to the main power like the below figure 2.

Step 3. Connect the water tank kit to the Main PCB Assembly1 like the below figure 2.

Step 4. Connect power cord of sanitary tank heater. It is located inside of the tank. Refer to the next page for more information.

Step 5. Find sanitary water tank sensor. Plug it to 'CN_TH4' (Red Connector) of the main PCB assembly 1. The sensor should be mounted correctly to the sensor hole of sanitary water tank. Like below figure. 1

Step 6. Connect the Main PCB to terminal block with wire(Part 4) like figure 3.

This wire is only for AHBWXXXA0 model.

Sanitary
Water Tank
Sensor
CN-TH4	Sanitary Water
	Tank
Fig. 1	Main Power	6	7
		BR	BL
	220-240
		Main PCB

CH-B/HEAT(A)	Fig. 2
	.

Fig. 3

Sensor mounting

Insert sensor into sensor socket and bolt it tightly

3

4

Installing recirculation pump

When is used with sanitary water tank, it is STRONGLY recommended to install recirculation pump to prevent flooding out cold water at the end of hot water supply and to stabilize the water temperature inside the sanitary water tank.

-The recirculation pump should be operated when sanitary water demand is not required. Therefore, external time scheduler to determine when the recirculation pump should turn on and turn off is required.

-The operating duration time of the recirculation pump is calculated as follow : Duration time [minute] = (k*V)/R

k : 1.2 ~ 1.5 is recommended. (If distance between pump and tank is far, then choose high number.) V : Volume of sanitary water tank [liter]

R : Water flow rate of pump [liter per minute], which is determined by pump performance curve.

-The pump operating start time should be prior to the sanitary water demand.

Water Out

Water In

Hot water supply

Shower (End of Hot water supply)

Recirculation

Pump

External

Time Scheduler

Check Valve

Sanitary	City water
Water Tank

How to Wire Sanitary Water Tank Heater

Step 1. Uncover heater cover of the sanitary water tank. Heater is located inside of the tank.

Step 2. Find terminal block in the water tank kit and connect wires as below. Wires are field-supplied item.

(L) : Live signal from Water Tank Kit to Heater

(N) : Neutral signal from Water Tank Kit to Heater

Wire specification

•Cross-sectional area of the wire should be over 5mm2.

•You should use the shield wire for the signal wire in terminal block 5,6 not to make the electric noise.

Adjusting thermostat temperature

• To guarantee proper operation, it is recommended to set temperature of thermostat to maximum temperature (symbol at the figure 3).

Terminal block in the water tank kit

34

L N

BR BL

(L)(N)

Fig. 3

DIP Switch Setting

Turn off electric power supply before setting DIP switch.

• Whenever adjusting DIP switch, turn off electric power supply to avoid electric shock.

General Information

OFF

ON

1

2

3

4

5

6

7

8

OFF is selected

ON is selected

2

3

Unit + Sanitary water tank + Solar thermal system is installed.

5

6

7