Daikin FBQ50D2VEB, Installation Manual

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2
For the following items, take special care during
construction and check after installation is finished
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 there is no risk of flammable gas leaking.
• The equipment is not intended for use in a potentially
explosive atmosphere.
• Where piping between indoor and outdoor units is possible
within the allowable limit. (Refer to the installation manual of
the outdoor unit.)
• This is a class A product. In a domestic environment this
product may cause radio interference in which case the user
may be required to take adequate measures.
• 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
interference in those electrical appliances. (Electric noise
may be generated depending on the conditions under which
the electric wave is generated, even if 1 meter is kept.)
• When installing the wireless remote controller kit, the
distance between wireless remote controller and indoor unit
might be shorter if there are fluorescent lights who are
electrically started in the room. The indoor unit must be
installed as far as possible away from fluorescent lights.
• Do not place objects that are susceptible to moisture directly
beneath the indoor or outdoor units. Under certain conditions,
condensation on the main unit or refrigerant pipes, air filter
dirt or drain blockage may cause dripping, resulting in fouling
or failure of the object concerned.
2. Ensure that a protective guard is installed on air suction and air outlet
side to prevent that the fan blades or heat exchanger be touched.
The protection must comply with relevant European and national
regulations.
3. 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.
Preparations before installation
1. Relation of ceiling opening to unit and suspension bolt position.
(See figure 5)
For installation, choose one of the possibilities as listed further.
Standard rear suction (See figure 6a )
Installation with rear duct and duct service opening (See
figure 6b )
Installation with rear duct, no duct service opening (See
figure 6c )
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 or heating.
 Is the unit fully insulated and checked for air leaks?
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 or heating.
 Are refrigerant piping length and additional refrigerant charge
noted down?
The refrigerant charge in the system might not be clear.
This to avoid confusion for future maintenance and serving of
the installation.
 Are the air filters fixed properly (when installing with rear duct)?
Maintenance of the air filters can be impossible.
 Is the external static pressure set?
It may result in insufficient cooling or heating.
1 Service space
2 Drain pipe
3 Power supply wiring port
4 Transmission wiring port
5 Maintenance drain outlet
6 Gas pipe
7 Liquid pipe
Model A (mm) B (mm)
35+50 700 738
60+71 1000 1038
100~140 1400 1438
1 Indoor unit
2 Pipe
3 Suspension bolt pitch (x4)
4 Suspension bolt pitch distance
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
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
1
2
4
3