Panasonic GHP, Test Run Manual

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Ⅱ － 12
11.. Items to Check before the Test Run
(1) In order to activate the crankcase heater, turn the remote power switch on at least 5 hours before starting operation.
(If this is not done, the compressor may be damaged.)
(2) Fully open the shut-off valves of the gas, liquid and balance tubes of the GHP outdoor unit. Turn the valves slowly
through 90° to the left (counterclockwise). The valve is fully open when it reaches the stopper position. Do not attempt
to force it past that point. Note that the orientation of the tabs on the shut-off valves of the GHP outdoor unit for the gas
and liquid tubes is 90° different from the balance tubes. (Fig.7)
(3) Fully open the shut-off valves of the gas, liquid and balance tubes of the U-10MES2E8 outdoor unit. The gas tube
shut-off valve is fully opened by turning it fully to the left, using a hexagonal wrench (8mm across faces). The liquid tube
shut-off valve is fully opened by turning it fully to the left, using a hexagonal wrench (4mm across faces). Turn the shut-
off valve of the balance tube slowly through 90° to the left (counterclockwise). The valve is fully open when it reaches
the stopper position. Do not attempt to force it past that point. (Fig.8)
(4) Check that the cardboard and Styrofoam that were used for transport have been removed from the indoor fan and the
automatic flap.
Balance tube
Liquid tube
Open by turning to the
left with a hexagonal
wrench
4mm across faces
Gas tube
Open by turning
to the left with a
hexagonal wrench
8mm across faces
Gas tube, liquid tube, and balance tube of
the U-10MES2E8
Fully closed Fully open
Gas tube and liquid tube of the GHP outdoor unit
Rotate the tab 90 degrees.
Fully closed Fully open
Balance tube of the GHP outdoor unit
Balance tube of the U-10MES2E8
Fully closed
Fully open
Fig. 7 Fig. 8