Daikin VRV FXDQ-PDVE, Engineering Data

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FXDQ-PDVE(T) / FXDQ-NDVE(T) EDFMT391749
44
3P432203-7B
English 9
〈 PRECAUTIONS 〉
Drain piping connections
• Do not connect the drain piping directly to sewage pipes that
smell of ammonia. The ammonia in the sewage might enter
the indoor unit through the drain piping and corrode the heat
exchanger.
• Do not twist or bend the drain hose (2), so that excessive
force is not applied to it.
(This type of treatment may cause leaking.)
• If you are using central drain piping, follow the procedure
outlined in the figure 14.
•
Select central drain piping of proper size according to the
capacity of the connected unit.
(2) After piping work is finished, check drainage flows
smoothly, with manner described below.
• Gradually pour approximately 1L of water from the outlet hole
into the drain pan to check drainage.
• Check the drainage.
8. INSTALLING THE DUCT
Connect the duct supplied in the field.
Air inlet side
• Attach the duct and intake-side flange (field supply).
•
Connect the flange to the main unit with accessory screws
(7).
• Wrap the intake-side flange and duct connection area with
aluminum tape or something similar to prevent air escaping.
CAUTION
When attaching a duct to the intake side, be sure to attach an air
filter inside the air passage on the intake side. (Use an air filter
whose dust collecting efficiency is at least 50% in a gravimetric
technique.)
The included filter is not used when the intake duct is attached.
Air outlet side
• Connect the duct according to the air inside of the outlet-side
flange.
•
Wrap the outlet-side flange and the duct connection area
with aluminum tape or something similar to prevent air
escaping.
Class 20 · 25 · 32 40 · 50 63
Number of
positions
16 22 26
Portable pump
Refrigerant
pipes Bucket
Air outlet
Drain outlet
Connection screw (7)
(accessory)
(Field supply)
(Field supply)
(Field supply)
(Field supply)
Flange
Flange
Aluminum tape
Aluminum tape
Main unit
Insulation
material
Air inlet side Air outlet side
(1) Install the drain piping.
•
Make sure the drain works properly.
•
The diameter of the drain piping should be greater than or
equal to the diameter of the connecting pipe (vinyl tube; pipe
size: 20 mm; outer dimension: 26 mm).
(not including the riser)
• Keep the drain piping short and sloping downwards at a
gradient of at least 1/100 to prevent air pockets from forming.
(Refer to Fig. 14)
CAUTION
Water accumulating in the drain piping can cause the
drain to clog.
• To keep the drain piping from sagging, space hanging
bracket every 1 to 1.5 m.
• Use the drain hose (2) and the metal clamp (1). Insert the
drain hose (2) fully into the drain socket and firmly tighten the
metal clamp (1) with the upper part of the tape on the hose
end. Tighten the metal clamp (1) until the screw head is less
than 4 mm from the hose.
(Refer to Fig. 15, 16)
• The two areas below should be insulated because
condensation may form there causing water to leak.
• Drain piping passing indoors
• Drain socket
Referring the figure below, insulate the metal clamp (1) and
drain hose (2) using the included large sealing pad (5).
(Refer to Fig. 16)
Drain socket
Refrigerant pipes
Connect the drain pipe after removing the rubber cap and
insulation tubing attached to the connection hole.
Central drain piping
(with a slope of at least 1/100) Fig. 14
100mm or more
Metal clamp (1)
Drain hose (2) Tape
6 1 . g i F 5 1 . g i F
(accessory)
(accessory)
≤ 4mm
Large sealing
pad (5)
Metal clamp (1)
(accessory)
(accessory)