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Trane
Air Conditioner
25 Series
Trane 25 Series User Manual
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Refrigerant System Diagram
Heat Pump Models
Indoo
r un
i
t
Outdoo
r uni
t
COOLING
HEATING
4-Way valve
Discharge
Suction
He
at
e
xch
ang
e
r
(e
vapo
ra
tor)
He
at
e
xc
hang
e
r
(condenser)
Valve
Valve
Liquid
p
i
pe
side
Gas pipe
side
Strainer
Electron
expansion
valve
Strainer
Accumlator
Compre
ssor
Liquid pipe:1/4"
Gas pipe:3/8" (09K) 1/2"(12K)
In
do
or
un
it
Ou
td
oo
r un
it
COOLING
HEATING
4-Way valve
Discharge
Suction
He
at
exc
hange
r
(e
vapora
to
r)
He
at
ex
change
r
(condenser)
Valve
Valve
Li
qu
id
pi
pe
si
de
Gas
pi
pe
si
de
St
ra
in
er
Electron
expansion
valve
St
ra
in
er
Accumlator
Compressor
Capillary
Liquid pipe: 1/4"inch
Gas pipe: 1/2" (for 18k)
Gas pipe: 5/8" (for 24k)
9K-12K
18K-24K
30
25 Series Single Zone
29
31
Table of Contents
Table of Contents
4
Safety Precautions
5
Pre-Installation Checklist
6
Items Shipped with the System
7
Necessary Tools
7
Typical Installation Setup
8
Names and Functions of each Part
8
Clearance Requirements
9
Connection Pipe Requirements
10
Refrigerant Piping Precautions
11
Nitrogen Purging While Brazing
11
Installation Location
12
Installing the Indoor Unit
13
Mounting Location
13
Drilling the Piping Hole
14
Refrigerant Piping at the Indoor Unit
15
Installing the Condensate Pipe
17
Wiring at the Indoor Unit
17
Binding the Pipes and Cables
19
Hanging the Indoor Unit
19
Installing the Outdoor Unit
20
Condensate Management of the Outdoor Unit
20
Installing the Refrigerant Piping
21
Flaring Process and Bending Pipes
21
Refrigerant Piping at the Outdoor Unit
22
Insulating the Refrigerant Piping and Connections
22
Piping Requirements
23
Vacuum and Refrigerant Leakage Detection
24
Wiring Precautions
25
Outdoor Wiring Connections
25
Stranded Wiring Connections
26
Electrical Connections
27
Power Supply Wiring
28
Cable Specifications and Grounding Requirements
28
Installation of Controllers
28
Post Installation Checklist
29
Test Operation
29
Refrigerant System Diagrams
30
Wiring Diagrams
32
Unit Dimensions
38
Common Error Codes
43
Troubleshooting
45
Auxillary Operation
46
Indoor Unit Maintenance
46
General Maintenance
47
4
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Trane 25 Series Specifications
General
Brand
Trane
Model
25 Series
Category
Air Conditioner
Language
English
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