Daikin BRC1E51A7 Installation Manual download pdf (Page 17)

English 15

• Install the drain raising pipes at a height of less than 675 mm.

The drain pump of this unit has a high delivery flow rate. Therefore, the higher the drain raising height is,

the lower the sound of draining will be. For this reason, a minimum drain raising height of 300 mm is rec-

ommended.

• Install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit.

NOTE

• To ensure no excessive pressure is applied to the included drain hose (1), do not bend or twist when install-

ing. (This may cause leakage.)

• If converging multiple drain pipes, install according to the procedure shown below.

Select converging drain pipes whose gauge is suitable for the operating capacity of the unit.

(2) After piping work is finished, check if drainage flows smoothly.

WHEN ELECTRIC WIRING WORK IS FINISHED

• Add approximately 1 L of water slowly from the air outlet and check drainage flow.

Check drainage flow during COOL running, explained under ‘‘12. TEST OPERATION’’.

• After checking the drainage of water, refer to Fig. 24 and attach the sealing pad (14) to perform the thermal

insulation of the drain socket.

Ceiling slab

Metal clamp

(attached) (2)

Drain hose (1)

(attached)

Drain raising pipe

Raising section

Drain hose (attached) (1)

≤850

Hanger bracket

Adjustable

(

≤

675)

1 – 1.5 m

≤300 mm

175

Fig. 22

To prevent air bubbles in the

drain hose part, keep it level or

slightly tilted up. Any bubbles in

the hose might cause the unit

to make noise due to backflow

when the drain pump stops.

Level or

tilted

slightly up

0 -

675 mm

Converging drain pipes

Keep the drain pipe sloping downward

at a gradient of at least 1/100 to prevent

air pockets from forming.

(

Water pooling in the drainage pipe can

)

cause the drain to clog.

Fig. 23

Sealing pad (14)

(accessory)

Sealing pad (14)

(accessory)

Sealing pad - Large

(10) (accessory)

Be sure to lay

the sealing pad

(10) on (14).

Do not have the clearance.

Fig. 24

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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Daikin BRC1E51A7 Installation Manual Page 17

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