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Daikin RXYQ5PY1 Service Manual Page 73

R-410a heat pump 50hz/60hz cooling only 50hz.
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SiEN34-705
Ceiling
Drain Piping Work
Suspended
1. Rig drain piping (Refer to Fig. 26)
Cassette Type
(FXUQ-MA)
Caution
Water pooling in the drainage piping can cause the drain to clog.
! To keep the drain hose from sagging, space hanging wires every 1 to 1.5 m.
! Use only the included drain hose (1), (for rightward running drain hose) or elbow (10) (for
! Fit the drain hose (1) or elbow (10) over the drain pipe up to the neck and fasten tight with
! Insulate the clamp (2) and drain hose or elbow (10) with the included sealing pad (8).
! Make sure that heat insulation work is executed on the following 2 spots to prevent any
Elbow (10)
(accessory)
Caution
! Do not twist or bend the drain hose (1), so that excessive force is not applied to it, as this
! If converging multiple drain piping, install according to the procedure shown below.
General Information
As for drain work, perform piping in such a manner that water can be drained properly.
As for drain piping, the connection can be made from three different directions.
! Employ a pipe with either the same diameter or with the diameter larger (excluding the
raising section) than that of the connecting pipe (PVC pipe, nominal diameter 20 mm,
outside diameter 26 mm).
! Keep the drain pipe short and sloping downwards at a gradient of at least 1/100 to prevent
air pockets from forming. (Refer to Fig. 27)
Drain hose (1) (For VP20 connection)
Drain piping
(Accessory)
(field supplied)
VP20
Elbow (10)
Large sealing pad (8) (accessory)
Clamp (2) (accessory)
Notes on upward running drain hose
Fig. 26
(Refer to Fig. 26)
upward running drain hose) and clamp (2).
the clamp (2).
(Refer to Fig. 28)
possible water leakage due to dew condensation.
! Insulate the drain hose inside the building.
! Drain socket
Metal clamp (2) (accessory)
Long
end
Large sealing pad (8) (accessory)
Tape
could cause leaks.
(Refer to Fig. 29)
Select converging drain piping whose gauge is suitable for the operating capacity of the unit.
Ceiling slab
1 - 1.5 m
Hanger
bracket
VP20
Metal clamp (2) (accessory)
Drain hose (1)
(accessory)
Large sealing pad (8)
(accessory)
Metal clamp (2)
Metal clamp (2)
(accessor
(accessory)
Drain hose (1)
(accessory)
Fig. 28
T-joint converging drain piping
Fig. 29
Rearward running piping
Rightward running drain hose
Fig. 27
Large sealing pad (8) (accessory)
Elbow (10) (accessory)
Metal clamp (2)
Upward
(accessory)
running
piping
Short end
Large
sealing pad (8)
(accessory)
≤4mm
Installation
Min. 1/100 gradient
GOOD
WRONG
(V2327)
67

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