Daikin FTXR28EV1B, Installation Manual

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English

8

4.

Laying piping, hoses, and wiring.

• Connect the humidifying hose to the indoor unit duct. 

See 

5. Humidifying hose installation work

 for details. 

• Lay the piping, drain hose and humidifying hose 

according to the orientation of the piping coming out of 
the unit, as shown below. 

• Make sure the drain hose is sloped downward.
• Wrap the piping, drain hose and humidifying hose 

together using insulation tape.

4-1. Right-side, right-back, or right-bottom piping. 

1) Wrap the piping, hose and inter-unit wiring using insulation tape as shown in the piping bundle diagram.
2) Put all the pipes through the through-hole in the wall and hook the indoor unit onto the   mounting plate.
3) Connect the pipes.

4-2. Left-side, left-back, or left-bottom piping. 

1) Replace the drain plug and drain hose. 

(How to replace the drain plug 

and drain hose.)

2) Pull in the refrigerant piping and lay it so that it matches the liquid and 

gas piping marked on the   mounting plate.

3) Hook the indoor unit onto the   mounting plate. 
4) Connect the pipes. If it is difficult to do, remove the front panel first.
5) Wrap the insulation on the piping with insulation tape. If you are not 

replacing the drain hose, store it in the location shown below.

4-3. Left-back piping. 

Drain hose

Gas pipe

Liquid pipe

Inter-unit wiring

Humidifying 
hose

Insulation tape

Piping bundle diagram

Cut out the 
piping-through hole.

Install with a 
downward slope.

Cut out the 
piping-through hole.

• Right-back piping

• Right-bottom piping

• Right-side piping

Humidifying hose

It is recommended 
to use the elbow.

A

• Left-back piping

• Left-bottom piping

• Left-side piping

Cut out the 
piping-through hole.

Refrigerant pipe

Drain hose

Humidifying hose

Refrigerant pipe

Cut out the 
piping-through hole.

Humidifying hose

Refrigerant pipe

F

M4 × 12L

1) Remove the front grille.

2) Secure the indoor unit 

with the      indoor unit 
fixing screws.

3) Install the front grille.

When securing the indoor unit with screws

F

A

A

Inter-unit wiring

Humidifying hose

Drain hose

Caulk this hole with putty 
or caulking material.

Bind with plastic tape.

Wrap insulation tape around the 
bent portion of refrigerant pipe. 
Overlap at least half the width of 
the tape with each turn.

Mounting plate

A

01_EN_3P177302-1.fm  Page 8  Tuesday, May 30, 2006  9:36 AM