5 Installation
Installation manual
8
FBA35~14FBA35~7ADEA35~125A2VEB
Split system air conditioners
4P456962-1D – 2018.08
a1
Nut (field supply)
a2
Double nut (field supply)
b1
Washer (accessories)
c1
Hanger bracket (attached to the unit)
a
Indoor unit
b
Pipe
c
Hanger bracket pitch (suspension)
d
Suspension bolt spacing
INFORMATION
▪ The fan speed of the indoor unit is preset to ensure the
standard external static pressure.
▪ To set a higher or lower external static pressure, reset
the initial setting with the user interface.
▪
Installation example:
b
a
c
e
d
a
Anchor
b
Ceiling slab
c
Long nut or turn-buckle
d
Suspension bolt
e
Indoor unit
▪
Install the unit temporarily.
5
Attach the hanger bracket to the suspension bolt.
6
Fix it securely.
▪
Level
. Make sure the unit is level at all four corners using a level
or a water-filled vinyl tube.
b
a
a
Water level
b
Vinyl tube
7
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.
5.1.2
Guidelines when installing the ducting
WARNING
If one or more rooms are connected to the unit using a
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
min
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 the manufacturer
are used in the duct work;
▪ an air inlet or outlet is connected directly with a room by
ducting. Do NOT use spaces such as a false ceiling as
a duct for the air inlet or outlet.
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
b a
e
e
d
d
c
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.
5.1.3
Guidelines when installing the drain
piping
Make sure condensation water can be evacuated properly. This
involves:
▪ General guidelines
▪ Connecting the drain piping to the indoor unit
▪ Checking for water leaks
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 25 mm nominal diameter and
32 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.
1~1.5 m
a
a
Hanging bar
O
Allowed
X
Not allowed
▪
Condensation.
Take measures against condensation. Insulate
the complete drain piping in the building.
