Daikin VRV III Manual page 78

ED34-862
<PRECAUTIONS FOR DRAIN RAISING PIPING>
• Install the drain raising pipes at a height of less than 675mm.
The drain pump of this unit has a high delivery flow rate. Therefore, the higher the drain raising height is, the
lower the sound of draining will be. For this reason, a minimum drain raising height of 300mm is recommended.
• Install the drain raising pipes at a right angle to the indoor unit and no more than 300mm from the unit.
Drain hose (1)
(accessory)
To prevent air bubbles in the
drain hose part, keep it level or
slightly tilted up. Any bubbles in
the hose might cause the unit
to make noise due to backflow
when the drain pump stops.
NOTE
• To ensure no excessive pressure is applied to the included drain hose (1), do not bend or twist when install-
ing. (This may cause leakage.)
• If converging multiple drain pipes, install according to the procedure shown below.
Select converging drain pipes whose gauge is suitable for the operating capacity of the unit.
(2) After piping work is finished, check if drainage flows smoothly.
WHEN ELECTRIC WIRING WORK IS FINISHED
• Add approximately 1000cc of water slowly from the air outlet and check drainage flow.
• Check drainage flow during COOL running, explained under ''12. TEST OPERATION''.
• Refer to the figure on the following after checking the draining of water, and mount the thermal insulation
material for drainage (14) and thermal insulate the drain socket.
WHEN ELECTRIC WIRING WORK IS NOT FINISHED
CAUTION
• Electrical wiring work should be done by a certified electrician.
• If someone who does not have the proper qualifications performs the work, perform the following after the
test run is complete.
13
FXFQ-P
Level or
tilted
slightly up
Metal clamp
(accessory) (2)
Fig. 22
Thermal insulation
material for drainage (14)
(accessory)
Thermal insulation
material for drainage (14)
(accessory)
Ceiling slab
≥
300mm
1 – 1.5m
Hanger bracket
Drain raising pipe
Raising section
Drain hose (accessory) (1)
Fig. 21
Central drain pipe
The drain pipe should have a downward
slope of at least 1/100 to prevent
air pockets from forming.
Water accumulating in the drain
piping can cause the drain to clog.
Sealing pad (Large) (10)
Be sure to lay the sealing
material on (14).
Make sure that there
is no clearance.
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Installation Manual
2
Adjustable
≥
( 675)
English
3P161684-3B
73