Carrier 42/38KCJ024713, Technical & Service Manual

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Installation detail
18
16 6180~7540N.cm(630~770kgf.cm)
19 9720~11860N.cm(990~12106kgf.cm)
6.3.3 Air Purging
When Using the Vacuum Pump
(For method of using a manifold valve, refer to its operation manual.)
a. Completely tighten the flare nuts, A, B, C, D, connect the manifold valve charge
hose to a charge port of the low-pressure valve on the gas pipe side.
b. Connect the charge hose connection to the vacuum pump.
c. Fully open the handle Lo of the manifold valve.
d. Operate the vacuum pump to evacuate. After starting evacuation, slightly loose
the flare nut of the Lo valve on the gas pipe side and check that the air is
entering.(Operation noise of the vacuum pump changes and a compound
meter indicates 0 instead of minus)
e. After the evacuation is complete, fully close the handle Lo of the manifold valve
and stop the operation of the vacuum pump. Make evacuation for 15 minutes or
more and check that the compound meter indicates -76cmHg (-10x106Pa).
f. Turn the stem of the packed valve B about 45 counterclockwise for 6~7 seconds
after the gas coming out, then tighten the flare nut again. Make sure the pressure
display in the pressure indicator is a little higher than the atmosphere pressure.
g. Remove the charge hose from the low pressure charge hose.
h. Fully open the packed valve stems B and A.
i. Securely tighten the cap of the packed valve.
6.4 Drain Pipe of The Indoor Unit
Make sure the drainpipe is connected to the outdoor side downward;
The hard polyvinyl chloride(PVC)plastic pipe (external diameter 26 mm) sold is the
market is suitable for the attached soft drain pipe;
Please connect the Soft Drain Pipe with the Drain Pipe, then fix it with band;
If you have to connect the Drain Pipe indoors, to avoid condensing caused by air intake,
you must cover the pipe with heat-insulation material (polyethylene with Specific Gravity