LG THERMA V AHBW036H0 Installation Manual page 18

Installation
When the water pipes are connected.
It must be tightened the nut with two wrench.
Otherwise pipes can be deformed.
WARNING
Water Pipe Insulation
Purpose of water pipe insulation is :
To prevent heat loss to external environment.
To prevent pipe breakage by freeze at winter season,
※ Must be insulation at exterior water pipe between product and building.
Shutoff Valve
- Shut-Off Valve is used to connect water pipe to unit.
- Tighten the flare nut with two spanner. (check the leak to the connection.)
18 Air-to-Water Heat Pump
Water Out
Union
Water In