Haier HP200S1, Installation And Service Manual

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e) close the valves of the pump and shut off (B). Verify that the gauge needle does not
move for about 5 minutes.
If the needle moves, there are air leaks in the system, then you must check all the
tightening and execution of flare at this point repeat the procedure from step c;
f)Disconnect the vacuum pump, (if you want to add refrigerant gas see the next
paragraph);
g) completely open the taps on 2 and 3 way valves (D);
h) Screw in the cap on the service outlet and valves (E);
i)after having tightened the plugs, make sure there are no gas leaks with the
appropriate detector.
Always protect hoses and cables to prevent their being damaged, as once damaged
can cause gas leaks(personal injury from frostbite).
5.8 Charge of the refrigerant gas
The product can be installed with refrigerant connection between internal and external
unit up to 20 m. The declared performances are referred to refrigerant connection
pipes of 5 m; different types of installation may lead to different values of
performance.
In case you are adding R134a gas in the circuit, will be needed:
- R134a refrigerant tank. In this case it is necessary a charge attack 1/2 UNF 20
threads per inch and corresponding seal;
- Electronic scale for refrigerant charging with sensitivity 10g.
- Connection pipes over 10 m need to increase the refrigerant(30g / m).
During installation:
a) Carry out the procedure of passage
Ā
a
ā
to the passage
Ā
f
ā
;
b) Connect the manometer on the low pressure service valve, and connect the
refrigerant cylinder to the center tap of the the manometer. Open the container of the
refrigerant then open the main valve cap pressure gauge and adjust the needle valve
until
you hear the coolant leak, and release the pin and close the valve of the the pipe;
c) Keep under control the weight of the refrigerant tank through the electronic scale;
d) Open the ball valve and to flow the refrigerant gradually;
e) After reaching the mass of gas to be loaded close the tap;
f) Remove the manometer and charging hose from the valve;
g) Fully open taps 2 and 3 way valves (D), turn the product in heat pump mode with
the detector and check for leaks of refrigerant;
h) Remove the container from the manifold and replace all the plugs (E).
Already installed:
a) Connect the manometer on the low pressure service valve, and connect the
refrigerant cylinder to the center tap of the the manometer. Open the container of the
refrigerant then open the main valve cap pressure gauge and adjust the needle valve