23
refrigerant.
If the system cannot be charge with the specified amount of refrigerant, if can be
charged with a little at a time (approximately 150g each time0 while operating the air
conditioner in the cooling cycle; however, one time is not sufficient, wait approximately 1
minute and then repeat the procedure.(pumping down-pin).
4. Immediately disconnect the charge hose from the 3-
way valve’s service port.
Stopping partway will allow the refrigerant to be discharged.
If the system has been charged with liquid refrigerant while operating the air
conditioner, turn off the air conditioner before disconnecting the hose.
5. Mounted the valve stem caps and the service port
Use torque wrench to tighten the service port cap to a torque of 18N.m.
Be sure to check for gas leakage.
5.4 Drain Pipe of The Indoor Unit
1. Make sure the drain pipe is connected to the outdoor side downward;
2.The hard polyvinyl chloride(PVC)plastic pipe (external diameter 26 mm) sold is the
market is suitable for the attached soft drain pipe;
3.Please connect the Soft Drain Pipe with the Drain Pipe, then fix it with band;
4.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
of 0.03, at least 9 mm in thickness), and use Glue Band to fix it.
5.After the Drain Pipe has been connected, please check if the water drains out of the
pipe efficiently and has no leakage.
6.Refrigerant pipe and Drainpipe should be heat-insulated to avoid condensing and
water-dropping later on.
