– 19 –
PERFORMANCE CURVE DIAGRAM
REMARKS FOR GAS PRESSURE CHECK AND CHARGING
Gas pressure is to be measured at TEST OPERATION for cooling or EMERGENCY OPERATION for
heating. (It is operated for 30 minutes at fixed frequency.)
If you find substantial diffrence in performance compared with PERFORMANCE CURVE as shown next,
recharge the refrigerant.
(In order to avoid excessive charging, purge all the remaining refrigerant first and then evacuate the unit
completely with vacuum pump and finally apply rated volume charging of refrigerant.)
Charging of refrigerant should be done by cooling operation, because the pressure at service valve will
be too high at heating cycle, then the heating performance characteristics must be checked by restarting
of heating operation.
Piping size
Max. tube length
Liquid side
Gas side
Max. height difference
6.35mm
9.52mm
15m
10m
Summary of Contents for S1731
Page 24: ... 23 ELECTRIC CIRCUIT DIAGRAM S1731Outdoor S1735Outdoor ...
Page 31: ... 30 PCB AC 377 AC 379 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor Bottom View ...
Page 32: ... 31 FILTER PCB AC 378 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor Bottom View ...
Page 34: ... 33 SCHEMATIC DIAGRAM AC 377 AC 379 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor ...
Page 35: ... 34 FILTER PCB AC 378 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor ...
