Daikin FHA35AVEB99 Installation Manual Download

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English

• After piping is finished, cut the removed penetration

cover along the shape of piping, and install it.
Also, for top panel penetration cover, as it was before
removed, put the horizontal blade motor and thermistor
lead through the clamp of the top panel penetration cover
and fix. (Refer to Fig. 16 and Fig. 19)
When doing this, block any gaps between the piping pen-
etration cover and the piping using putty field supply to
prevent dust from entering the indoor unit.

NOTE

NOTE

1. When carrying out leakage test of refrigerant piping and the

indoor unit after the installation of indoor unit is finished,
confirm the connecting outdoor unit installation manual for
test pressure. Refer to also the outdoor unit installation
manual or technical document for refrigerant piping.

2. In case of refrigerant shortage due to forgetting additional

refrigerant charge etc., it will result in malfunction such as
does not cool or does not heat. Refer to the outdoor unit
installation manual or technical document for refrigerant
piping.

DRAIN PIPING WORK

(1) Carry out drain piping.

• Carry out drain piping so that drainage is ensured.
• Drain piping can be connected from the following direc-

tions: For right rear/right side, refer to Fig. 18 of ‘‘6.
REFRIGERANT PIPING WORK’’, and for left rear/left
side, refer to Fig. 20.

• When conducting left rear/left side drain piping, remove

the protection net. Then, remove the drain socket cap
and insulation material applied to left side drain socket
and apply them to the right side drain socket. When doing
this, insert the drain socket cap all the way in to prevent a
water leakage.
After the drain hose (1) (accessory) installing, attach the
protection net by reversing the steps taken to remove it.
(Refer to Fig. 21)

• Select the piping diameter equal to or larger than that of

the drain hose (1) (accessory) (polyvinyl chloride piping,
nominal diameter 20mm, outside diameter 26mm).

• Install the drain piping as short as possible with down-

ward inclination of 1/100 or more by avoiding air stagna-
tion. (Refer to Fig. 22 and Fig. 23)
(It may cause abnormal sound such as bubbling noise.)

CAUTION

If drain stagnates in the drain piping, the piping may be
clogged.

• Make sure to use the attached drain hose (1) and metal

clamp (2). Also, insert the drain hose (1) into the root of
the drain socket, and tighten the metal clamp (2) at the
root of the drain socket tightly.
(Refer to Fig. 24 and Fig. 25)
(Install the metal clamp (2) so that the tightening part is in
the range of about 45°as shown in the Fig. 25.)
(Do not bond the drain socket and drain hose. If so, main-
tenance and inspection for the heat exchanger and oth-
ers cannot be conducted.)

Screw
(put back to the indoor unit)

Decoration side panel (right)
Separating parts

Cut only this part when laying only
the drain piping on the right side.

Stay for packing and delivering
(reinforcing plate)

Right side refrigerant piping

Rear side drain piping

Rear side refrigerant piping

Right side drain piping

Fig. 18

Thermistor lead

Horizontal blade motor lead

Top panel penetration
cover clamp part