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Indoor Unit Installation

4.

Laying piping, hoses, and wiring 

• The recommended installation method is back piping. 

When performing bottom piping or side piping, refer to 
“5. Bottom or side piping” on page 10.

4-1. Right-back piping 

1) Attach the drain hose to the underside of the refrigerant pipes with 

adhesive vinyl tape.

2) Wrap the inter-unit wire, refrigerant pipes and drain hose together 

with insulation tape.  

3) Pass the inter-unit wire, drain hose and refrigerant pipes through the 

wall hole, then set the indoor unit on the mounting plate hooks by using the   
markings at the top of the indoor unit as a guide. 

4-2. Left-back piping 

1) Replace the drain plug and drain hose. 
2) Attach the drain hose to the underside of the refrigerant 

pipes with adhesive vinyl tape.

3) Be sure to connect the drain hose to the drain port in place 

of a drain plug.

4) Shape the refrigerant pipe along the pipe path marking on the mounting plate. 
5) Pass drain hose and refrigerant pipes through the wall hole, then set the indoor unit on mounting plate hooks, using 

the   markings at the top of indoor unit as a guide. 

6) Pull in the inter-unit wire. 
7) Connect the inter-unit pipes.
8) Wrap the refrigerant pipes and drain hose 

together with insulation tape as shown in the 
figure on the right (in case of setting the drain 
hose through the back of the indoor unit).

Left back piping

Right back piping

Bind refrigerant pipe and drain hose 
together with adhesive vinyl tape.

A Mounting plate

Replacing onto the left side

1) Remove the insulation fixing screw on the right 

and remove the drain hose.

2) Remove the drain plug on the left side and 

attach it to the right side.

3) Insert the drain hose and tighten with included 

insulation fixing screw. Forgetting to tighten this 
may cause water leakages.

How to replace the drain plug and drain hose

Drain hose attachment position

The drain hose is on the back of the unit.

Front side of unit

Attachment on the right side 
(factory default)

Attachment on the left side

Drain hose

Drain hose

Insulation 
fixing screw

Insulation 
fixing screw

Right side

Left side

How to set drain plug

No gap

Insert a hexagonal wrench (4mm).

Do not apply lubricating oil (refrigerant 
oil) to the drain plug when inserting it.
The application of lubrication oil to the 
drain plug will deteriorate the plug to 
cause drain leakage from the plug.

Drain hose

Bind with 
adhesive 
vinyl tape.

A Mounting plate

Caulk this hole 
with putty or 
caulking material.

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

Summary of Contents for FTXJ20MV1BS

Page 1: ...R32 Split Series INSTALLATION MANUAL DAIKIN ROOM AIR CONDITIONER MODELS FTXJ20MV1BW FTXJ20MV1BS FTXJ25MV1BW FTXJ25MV1BS FTXJ35MV1BW FTXJ35MV1BS FTXJ50MV1BW FTXJ50MV1BS...

Page 2: ...nte por B de acuerdo con el Certificado C 06 Nota delineato nel A e giudicato positivamente da B secondo il Certificato C 07 A B C 08 Nota tal como estabelecido em A e com o parecer positivo de B de a...

Page 3: ...lead as this may cause overheating electric shocks or fire Make sure that all wiring is secured the specified wires are used and that there is no strain on the terminal connections or wires Improper c...

Page 4: ...troller signals are properly received by the indoor unit within 6m CAUTION Do not install the air conditioner at any place where there is a danger of flammable gas leakage In the event of a gas leakag...

Page 5: ...finishing tape from bottom to top Cut thermal insulation pipe to an appropriate length and wrap it with tape making sure that no gap is left in the insulation pipe s cut line Caulk pipe hole gap with...

Page 6: ...e front panel locks on the back of the front panel upward to release the locks left and right sides 2 Insert the panel shafts on both sides of the upper front panel into the shaft holes 3 Slide the fr...

Page 7: ...6 Install the air filter and then mount the upper front panel 3 How to set the different addresses When two indoor units are installed in one room the two wireless remote controllers can be set for di...

Page 8: ...e cutter 2 Remove burrs with the cut surface facing downward so that the chips do not enter the pipe 3 Put the flare nut on the pipe 4 Flare the pipe 5 Check that the flaring is properly made WARNING...

Page 9: ...Choose heat insulation materials that will withstand this temperature 2 Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below 3 Use separate thermal insulat...

Page 10: ...the upper front panel then remove the service lid 2 Pass the inter unit wire from the outdoor unit through the feed through wall hole and then through the back of the indoor unit Pull them through the...

Page 11: ...ant pipes and drain hose together with insulation tape as shown in the figure on the right in case of setting the drain hose through the back of the indoor unit Left back piping Right back piping Bind...

Page 12: ...nit side Apply the blade of the copping saw to the notch and cut off the pipe port cover along the uneven inner surface 2 After cutting off the pipe port cover perform filing Remove the burrs along th...

Page 13: ...for the drain pump etc from the terminal block Doing so may cause electric shock or fire Do not connect the indoor unit to the mains electricity Connect it to the outdoor unit only or there may be dan...

Page 14: ...circuit board BZ Buzzer FG Frame ground F1U F2U Fuse H1P H2P Pilot lamp M1F Fan motor M1S M2S M3S Swing motor M1 Stepping motor R1T R2T Thermistor S25 S200 Connector S1C Limit switch S1W Operation sw...

Page 15: ...llation shut off the circuit breaker to eliminate unnecessary power consumption If the circuit breaker trips to shut off the power to the air conditioner the system will restore the original operation...

Page 16: ...3P393185 6K 2015 11 Copyright 2015 Daikin...

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