LG THERMA V AHNW16606B0, Руководство по установке, Страница: 60 / 65

60 Air-to-Water Heat Pump
Check Points, Maintenance and Troubleshooting
Before starting operation, pre-check points are described in this chapter. Some comments about
maintenance and how to do troubleshooting are presented.
Turn off the power before changing wiring or handling product
Check List before Starting Operation
Check Points, Maintenance and Troubleshooting
No Category Item Check Point
1
Electricity
Field wiring
• All switches having contacts for different poles should be wired
tightly according to regional or national legislation.
• Only qualified person can connect or route the wiring.
• Wiring and local-supplied electric parts should be complied with
European and regional regulations.
• Wiring should be following the wiring diagram supplied with the
product.
2 Earth wiring
• Earth should be connected. Do not earth to gas or city water pipe,
metallic section of a building, surge absorber, etc.
3 Power supply • Use dedicated power line.
4 Terminal block wiring
• Connections on the terminal block (inside the control box of the
indoor unit) should be tightened.
5
Water
Charged water pressure
• After water charging, the pressure gage (in front of the indoor unit)
should indicate 2.0~2.5 bar. Do not exceed 3.0 bar.
6 Air purge
• During water charging, air should be taken out through the hole of
the air purge.
• If water does not splash out when the tip (at the top of the hole) is
pressed, then air purging is not completed yet. If well purged, the
water will splash out like fountain.
• Be careful when testing air purge. Splashed water may make your
dress wet.
7 Shut-off valve
• Two shut-off valves (located at the end of water inlet pipe and water
outlet pipe of the indoor unit) should be open.
8 By-pass valve
• By-pass valve should be installed and adjusted to secure enough
water flow rate. If the rate of water flow is low, flow switch error can
be occurred.
9
Product Installation
Parts inspection
• There should apparently be no damaged parts inside the indoor
unit.
10 Refrigerant leakage
• Refrigerant leakage degrades the performance. If leakage is found,
contact qualified LG air conditioning installation person.
11 Drainage treatment
• While cooling, condensed dew can drop down to the bottom of the
indoor unit. In this case, prepare a drain to drain out (for example,
vessel to contain condensed dew) to avoid water drops.