LG HM123M.U32 User Manual download pdf (Page 37)

Installation Manual 37

Installation

ENGLISH

Installation of the final check

No. Check point Description

Connection of Water

Inlet/Outlet

- Check if the shut-off valves should be assembled

with Water inlet and outlet pipe of the unit

- Check the location of the water inlet/outlet water pipe

2 Hydraulic pressure

- Check the pressure of supplying water by using

pressure gage inside the unit

- Pressure of Supplying water should be Under 3.0 bar

approximately

3 Water pump speed

- To secure enough water flow rate, do not set water

pump speed as ‘Min’.

- It can lead unexpected flow rate error CH14.

(Refer to Chapter 4 ‘Water Piping and Water Circuit

Connection’)

Transmission line and

power source wiring

- Check if Transmission line and power source wiring

are separated from each other.

- If it is not, electronic noise may occur from the power

source.

The power cord

specifications

- Check the power cord specifications

(Refer to Chapter 4 ‘Connecting Cables’)

6 3Way Valve

- Water should flow from Water outlet of the unit to

sanitary tank Water inlet when sanitary tank heating

is selected.

- To verify the flow direction, Make sure that the water

outlet temperature of the unit and water inlet

temperature of sanitary Water tank are similar

7 2Way Valve

- Water should not flow into under floor loop in cooling

mode.

- To verify the flow direction, check temperature at the

water inlet of the under floor loop.

- If correctly wired, this temperatures should not be

approached to 6℃ in cooling mode.

8 Air Vent

- Air-vent must be located highest level of Water pipe

system

- It should be installed at the point which is easy to

service.

- It takes some times to remove air in the water

system if air purge is not performed sufficiently it may

occur CH14 error.

(refer to Chapter 4 ‘Water Charging’)

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LG HM123M.U32 User Manual Page 37

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