2
For the following items, take special care during
construction and check after installation is finished
Tick
when checked
❑
Is the indoor unit fixed firmly?
The unit may drop, vibrate or make noise.
❑
Is the gas leak test finished?
It may result in insufficient cooling.
❑
Is the unit fully insulated?
Condensate water may drip.
❑
Does drainage flow smoothly?
Condensate water may drip.
❑
Does the power supply voltage correspond to that shown on
the name plate?
The unit may malfunction or components may burn out.
❑
Are wiring and piping correct?
The unit may malfunction or components may burn out.
❑
Is the unit safely grounded?
Dangerous at electric leakage.
❑
Is the wiring size according to specifications?
The unit may malfunction or components may burn out.
❑
Is nothing blocking the air outlet or inlet of either the indoor or
outdoor units?
It may result in insufficient cooling.
❑
Are refrigerant piping length and additional refrigerant charge
noted down?
The refrigerant charge in the system might not be clear.
❑
Are the air filters fixed properly (when installing with rear duct)?
Maintenance of the air filters can be impossible.
Notes to the installer
•
Read this manual carefully to ensure correct installation. Be
sure to instruct the customer how to properly operate the
system and show him/her the enclosed operation manual.
•
Explain to the customer what system is installed on the site.
Be sure to fill out the appropriate installation specifications in
the chapter "What to do before operation" of the operation
manual.
SELECTING INSTALLATION SITE (
SEE
FIGURE
1
AND
2)
1. Select an installation site where the following conditions
are fulfilled and that meets your customer’s approval.
•
Where optimum air distribution can be ensured.
•
Where nothing blocks air passage.
•
Where condensate water can be properly drained.
•
Where the false ceiling is not noticeably on an incline.
•
Where sufficient clearance for maintenance and service
can be ensured.
•
Where piping between indoor and outdoor units is possible
within the allowable limit. (Refer to the installation manual
of the outdoor unit.)
•
Keep indoor unit, outdoor unit, power supply wiring and
transmission wiring at least 1 meter away from televisions
and radios. This is to prevent image interference and noise
in those electrical appliances.
(Noise may be generated depending on the conditions
under which the electric wave is generated, even if 1 meter
is kept.)
2. Use suspension bolts for installation. Check whether the
ceiling is strong enough to support the weight of the
indoor unit. If there is a risk, reinforce the ceiling before
installing the unit.
1
Service space 300
2
Drain pipe
3
Power supply wiring port
4
Transmission wiring port
5
Maintenance drain outlet
6
Gas pipe
7
Liquid pipe
PREPARATIONS BEFORE INSTALLATION
1. Relation of ceiling opening to unit and suspension bolt
position. (see figure 3)
Model
A
B
FH(Y)B35•45
700
750
FH(Y)B60•71
1000
1050
FHYB100•125
1400
1450
1
Indoor unit
2
Pipe
3
Suspension bolt pitch (x4)
4
Suspension bolt pitch distance
For installation, choose one of the possibilities as listed further.
Standard rear suction
See figure 6a
1
Ceiling surface
2
Ceiling opening
3
Service access panel (optional accessory)
4
Air filter
5
Air inlet duct
6
Duct service opening
7
Interchangeable plate
Installation with rear duct and duct service opening
See figure 6b
Installation with rear duct, no duct service opening
See figure 6c
NOTE
Before installation of the unit (in case
of installation with duct, but no duct
service opening): modify the position
of the air filters.
1
Remove the air filter(s) at the
outside of the unit
2
Remove the interchangeable plate
3
Install the air filter(s) from the inside
of the unit
4
Reinstall the interchangeable plate.
Bottom suction
See figure 7a
NOTE
The unit can be used with bottom suction by replacing the
interchangeable plate by the air filter holding plate.
1
air filter holding plate with air filter(s)
2
interchangeable plate
3
small bottom plate
1
2
4
3
