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COMMISSIONING
3.
Selecting the diameter
Number of connecting indoor units → Calculate drainage volume → Select the diameter
Calculate allowed volume =Total cooling capacity of indoor units(HP)×2 (l/ hr)
Hard
Hard
Hard
Hard
Hard
v.
Drainage test
•
Check whether the drainpipe is unhindered
•
New built house should have this test done before paving the ceiling .
•
Remove the test cover, and stow water of about 2000ml to the water receiver through the stow tube . (Refer to chart 43)
1.
Drainage without drain pump
After finishing drainpipe installation, pour some water into the water receiver plate to check if the water flows smoothly.
2.
Drainage with drain pump
Poke the Water Level Switch , remove the cover, use water pipe to pour 2000ml water into the water receipt plate through the
water inlet .
a.
Turn on the power to Cooling operation . Check the pump's operation and switch on the Water Level Switch . Check the pump's
sound and look into the transparent hard pipe in the outlet at the same time to check if the water can discharge normally .
b.
Stop the air conditioner running, turn off the power, and put back the cover .
•
Stop the air conditioner . After 3 minutes, check if it has abnormity . If the collocation of drainpipes is illogical, the water will
flow back overfull, which will cause the alarm lamp flashes, even overflow from the water receipt plate.
•
Keep on pouring water until it gives an alarm signal for high water level, check if the pump drains water at once . If the water
level can't fall below the alarmed water level after 3 minutes, the air conditioner will stop . Turn off the power and drain the
remained water, then turn on the air conditioner .
Note: the drain stuff in the main water receipt plate is for maintenance . Stuff up the drain stuff to prevent water leakage .
Water to the receiver
Test cover
through the stow tube
(Take size 36 as example)
Chart 42
• 6 •
Allowed volume (lean 1/100) (l/h)
§ ≤ 14
14 < § ≤ 88
88 < § ≤ 334
175 < § ≤ 334
334 < §
Water inlet
I.D. (mm)
¢ 25
¢ 30
¢ 40
¢ 50
¢ 80
Pour water
The base
Seal
Drain elbow
pan hole of
outdoor unit
Chart 43
Thick
3,0
3,5
4,0
4,5
6,0
Seal
Drain elbow
The base
pan hole of
outdoor unit
DUCTAIR II - 0808-E
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