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Installation Procedures
4. Drainpipes
MVAH009-030MV2AA
MVAH036-048MV2AA
(a) To prevent water flowing back into air conditioner when the unit stops running, drain hose should decline to the drainage
side with an inclination of above 1/100. Drain hose expansion or water accumulation should be prevented, or else it will
cause abnormal noise.
Proper Piping
hanging bolt
39 3/8~78 6/8in
heat insultor
gradient of 1/100 or over
(b) Please use the accessory drain hose to connect indoor unit's water outlet and PVC pipe. Use snap rings to tighten
them as shown in the following figure:
drain pipe
gas pipe
1 1/8
Improper Piping
air outlet port
wash port
wash port
sealing washer [for insulation]
main unit
drainage hose
thread clip
(accessory)
sealing washer [for insulation](accessory)
20 1/8
18 5/8
16 1/4
liquid pipe
18 3/8
29
18 3/8
16
18 3/8
avoid lobing
drainage hose
joint (purchased at local shop)
(accessory)
hard PVC tube (purchased at local shop)
binding
sealing washer [for insulation](accessory)
8
1 1/8
avoid curving
don't put pipe
into water
unit: in
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