[Chapter 10] Commissioning; Check List Before Starting Operation - LG THERMA V HN0916T Installation Manual

COMMISSIONING
If everything is going well until now, it is time to start the operation and to take advantages of
.
Before starting operation, pre-check points are described in this chapter. Some comments about
maintenance and how to do troubleshooting are presented.

Check List before Starting Operation

CAUTION
!
Turn off the power before changing wiring or handling product.
No Category
1
2 Protective devices
Electricity
3
4 Power supply
5 Terminal block wiring
6 Charged water pressure
7
Water
8 Shut-off valve
9 By-pass valve
10 Hang to the wall
11 Parts inspection
Product
Installation
12 Refrigerant leakage
13 Drainage treatment
Item
• All switches having contacts for different poles should be wired tightly
according to regional or national legislation.
• Only qualified person can proceed wiring.
Field 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.
• Install ELB (earth leakage breaker) with 30 mA.
• ELB inside the control box of the unit should be turned on before starting
operation.
• Earth should be connected. Do not earth to gas or city water pipe, metallic
Earth wiring
section of a building, surge absorber, etc.
• Use dedicated power line.
• Connections on the terminal block (inside the control box of the unit) should be
tightened.
• After water charging, the pressure gauge (in front of the unit) should indicate
2.0~2.5 bar. Do not exceed 3.0 bar.
• 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,
Air purge
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.
• Two shut-off valves (located at the end of water inlet pipe and water outlet
pipe of the unit) should be open.
• By-pass valve should be installed and adjusted to secure enough water flow
rate. If water flow rate is low, flow switch error (CH14) can be occurred.
• As the unit is hung on the wall, vibration or noise can be heard if the unit is not
fixed tightly.
• If the unit is not fixed tightly, it can fall down during operation.
• There should be no apparently damaged parts inside the unit.
• Refrigerant leakage degrades the performance. If leakage found, contact
qualified LG air conditioning installation person.
• While cooling operation, condensed dew can drop down to the bottom of the
unit. In this case, prepare drainage treatment (for example, vessel to contain
condensed dew) to avoid water drop.
COMMISSIONING
Check Point
163