York YDCS-28CA15A Installation Manual page 10

The end of the drainpipe should be over 50mm higher than the ground or the bottom of the drainage chute, and do not
immerse it in water. If you discharge the water directly into sewage be sure to make a U-form aquaseal by bending the
pipe up to prevent the smelly gas entering the house through the drain pipe.
CAUTIONS
All the joints of the drain system must be sealed to prevent water leakage.
Chart 15
2. Drainage test
• Check whether the drainpipe is unhindered
• New built house should have this test done before paving the ceiling.
1- Remove the test cover, and stow water of about 1500ml to the water receiver through the stow tube. (Refer to Chart 17)
2- Turn on the power, and operate the air conditioner under the "COOLING" mode. Listen to the sound of the drain pump.
Check whether the water is discharged well (a lag of 1min is allowed before discharging, according to the length of
the drain pipe), and check whether water leaks from the joints.
CAUTIONS
If there is any malfunction, please resolve it immediately.
3- Stop the air conditioner for there minutes, check if everything is ok. If the drain hose is located unreasonable, water
overflow will cause the Alarm indicator lamp flashing (For both cooling and heating type or cooling only type), even
the water leak out from the water receiver.
Lean over 1/50
Constrict here
Lean over 1/50
Drainpipe
Connecting pipe
Stow
Stow tube
Water receiver
Body Drain pipe
Drain plug
Drip tray
Chart 17
10
Lean over 1/50
Pump-pipe clasp
(the fittings)
Chart 16