30
Installation Manual
1. Connect charging hose of manifold valve to charge end of low pressure valve
(both high/low pressure valves must be tightly shut).
2. Connect joint of charging hose to vacuum pump.
3. Fully open the handle of Lo manifold valve.
4. Open the vacuum pump to evacuate. At the beginning, slightly loosen joint nut
of low pressure valve to check if there is air coming inside. (If noise of vacuum
pump has been changed, the reading of multimeter is 0) Then tighten the nut.
5. Keep evacuating for more than 15mins and make sure the reading of multi-
meter is-1.0
10 pa(-76cmHg).
6. Fully open high/low pressure valves.
7. Remove charging hose from charging end of low pressure valve.
8. Tighten bonnet of low pressure valve. (As shown in Fig.6)
7.4.2 Air Purging and Leakage Test
7.4.3 Outdoor Condensation Drainage (only for Heat pump type )
During heating operation, the condensing water and defrosting water should be
drained out reliably through the drain hose. Install the outdoor drain connector in
a
25 hole on the the base plate and attach the drain hose to the connector,so
that the waste water formed in the outdoor unit can be drained out satisfactorily.
Fig.6
Manifold Valve
Multimeter
-76cmHg
Lo Handle
Charging hose
Manometer
Hi handle
Vacuum pump
Low pressure valve
Base plate
Outdoor
drain connector
7.5 Check after installation and test operation
7.5.1 Check after Installation
Items to be checked
Possible malfunction
Has it been fixed firmly?
The unit may drop, shake or emit noise.
Have you done the refrigerant leakage test?
It may cause insufficient cooling(heating)
capacity
Is heat insulation sufficient?
It may cause condensation and dripping.
Is water drainage satisfactory?
It may cause condensation and dripping.
Is the voltage in accordance with the rated
voltage marked on the nameplate?
It may cause electric malfunction
or damage the product.
Is the electric wiring and piping
connection installed correctly and securely?
It may cause electric malfunction
or damage the part.
Has the unit been connected to a secure
earth connection?
It may cause electrical leakage.
Is the power cord specified?
It may cause electric malfunction
or damage the part.
Are the inlet and outlet openings blocked? It may cause insufficient cooling(heating)
capacity.
Is the length of connection pipes
and refrigerant capacity been recorded?
The refrigerant capacity is not accurate.
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