Air-to-water Heat Pump Split Versati
89
SPLIT TYPE
TEST OPERATION & TROUBLESHOOTING & MAINTENANCE
1 Pre-check
1.1 Check for Wiring
NOTE
• Do not check for the power supply unless proper checkout equipment has prepared and preventive measures
have been taken, otherwise it would lead to severe injury.
(1)
Are sizes of connection lines and the air switch proper?
(2)
Does wiring comply with relative standards and electric codes?
(3)
Is there any incorrect wiring?
(4)
Does each contact work properly?
(5)
Is the power supply and insulation proper?
(6)
Are initial set points of control and protective elements satisfied?
1.2 Check for the Water System
(1)
Are water inlet and outlet directions correct?
(2)
Is the water piping cleaned? Are there foreign matters at the pipe joints? Is the water quality satisfied?
(3)
Is insulation of water pipes in good condition?
(4)
Does exhaust valve of the water system work properly?
(5)
Instructions for Water Makeup and Air Removal.
NOTE
•
Once the air vent cap has not been loosened before operation for removing air at top of the auxiliary electric
heater, it would work without enough water.
◆
Air removal steps are stated below.
Step 1: connect water pipes and loosen the automatic relief valve(air vent).
Step 2: open the cut-off valve at the water makeup pipe and make up water from the tap water pipe until the
water pressure gage reads 2.0~2.5bar.
Lossen the black cap for two turns.
