Guidelines When Installing The Ducting; Guidelines When Installing The Drain Piping - Daikin FDXM35F3V1B Installer's Reference Manual

b
4 Reattach the removed suction cover.
b
c
a Air inlet
b Air outlet
c Suction cover
5 Attach the air filter (accessory) by pushing down the hooks (2
hooks for 25+35 type, 3 hooks for 50+60 type).
rear suction
2
1
▪ Install the unit temporarily.
6 Attach the hanger bracket to the suspension bolt.
7 Fix the unit securely.
▪ Level. Make sure the unit is level at all four corners using a level
or a water-filled vinyl tube.
b
a
a Level
b Vinyl tube
8 Tighten the upper nut.
NOTICE
Do NOT install the unit tilted. Possible consequence: If
the unit is tilted against the direction of the condensate flow
(the drain piping side is raised), the float switch might
malfunction and cause water to drip.
FDXM25~60F3V1B(9)
Split system air conditioners
4P550955-1 – 2018.07
a
c
a
bottom suction
2
1
6.2.3

Guidelines when installing the ducting

WARNING
If the one or more rooms are connected with the unit via
duct system make sure:
▪ there are no operating ignition sources (example: open
flames, an operating gas appliance or an operating
electric heater) in case the floor area is less than A
specified in the General safety precautions;
▪ no auxiliary devices, which may be a potential ignition
source, are installed in the duct work (example: hot
surfaces with a temperature exceeding 700°C and
electric switching device);
▪ only auxiliary devices approved by manufacturer are
used in the duct work.
WARNING
Do NOT install operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater) in the duct work.
The ducting is to be field supplied.
▪ Air inlet side. Attach the duct and intake-side flange (field
supply). For connecting the flange, use 7 accessory screws.
a b c
d e
a Connection screw (accessory)
b Flange (field supply)
c Main unit
d Insulation (field supply)
e Aluminium tape (field supply)
▪ Filter. Be sure to attach an air filter inside the air passage on the
intake side. Use an air filter with dust collecting efficiency ≥50%
(gravimetric method). The included filter is not used when the
intake duct is attached.
▪ Air outlet side. Connect the duct according to the inside
dimension of the outlet-side flange.
▪ Air leaks. Wind aluminium tape around the intake side flange and
duct connection. Make sure there are no air leaks at any other
connection.
▪ Insulation. Insulate the duct to prevent condensation from
forming. Use glass wool or polyethylene foam 25 mm thick.
6.2.4 Guidelines when installing the drain
piping
General guidelines
▪ Drain pump. For this "high lift type", the drainage sounds will be
reduced when the drain pump is installed in a higher location.
Recommended height is 300 mm.
▪ Pipe length. Keep drain piping as short as possible.
▪ Pipe size. Keep the pipe size equal to or greater than that of the
connecting pipe (vinyl pipe of 20 mm nominal diameter and
26 mm outer diameter).
▪ Slope. Make sure the drain piping slopes down (at least 1/100) to
prevent air from being trapped in the piping. Use hanging bars as
shown.
6 Installation
b a
e d
Installer reference guide
min
11