Controls Using 24 Vac; Low Voltage Connection (1/2 Through 5 Ton Equipment); 24V Ac Conductors; Basic Controls Wall Mounted Thermostat - Trane Axiom GEHB 006 Installation, Operation And Maintenance Manual

Controls Using 24 VAC

Before installing any wire, refer to the
electrical access locations in
Dimension section of this manual.
Ensure that the AC control wiring
between the controls and the unit's
termination point does not exceed
three (3) ohms/conductor for the
length of the run.
Note: Resistance in excess of 3-
ohms per conductor may
cause component failure due
to insufficient AC voltage
supply.
Check all loads and conductors for
grounds, shorts, and mis-wiring.
Use copper conductors unless
otherwise specified.
Do not run the AC low voltage wiring
in the same conduit with the high
voltage power wiring.
Table 33.

24V AC conductors

Distance from unit Recommended
to Control Wire Size
000-460 feet 18 gauge
461-732 feet 16 gauge
733-1000 feet 14 gauge
Low voltage connection diagrams for
basic and deluxe 24 volt control
packages mounted on 1/2 through 5
ton equipment sizes are shown in
Figure 62.
56
Installation

Basic Controls Wall Mounted Thermostat

1TB1
24 VAC
1
2 FAN
REVERSING VALVE (COOL)
3
COMPRESSOR & VAR SPD PUMP SOLENOID
4
24 VAC GENERAL ALARM OUTPUT
5
6 24 VAC COMMON & VAR SPD PUMP SOLENOID
7
8
9
10
11
12
13
14
15
16
17
18
Deluxe Controls NSB Thermostat
1TB1
1 "L" THERMOSTSAT TERMINAL
FAN
2
REVERSING VALVE (COOL)
3
COMPRESSOR & VAR SPD PUMP SOLENOID
4
5
6 24 VAC COMMON & VAR SPD PUMP SOLENOID
7
"R" THERMOSTAT TERMINAL
8
9 24 VAC COMPRESSOR DISABLE INPUT
10 24 VAC COMPRESSOR DISABLE INPUT
11
12
13
14 24 VAC NIGHT SETBACK INPUT
24 VAC NIGHT SETBACK INPUT
15
ALARM CONTACT OUTPUT
16
ALARM CONTACT OUTPUT
17
18
Figure 62.

Low voltage connection (1/2 through 5 ton equipment)

Deluxe Controls Wall Mounted Thermostat
1TB1
24 VAC
1
2 FAN
REVERSING VALVE (COOL)
3
COMPRESSOR & VAR SPD PUMP SOLENOID
4
5
6 24 VAC COMMON & VAR SPD PUMP SOLENOID
7 ELECTRIC HEAT (COOL ONLY W/ ELEC HT UNIT)
8
24 VAC COMPRESSOR DISABLE INPUT
9
10 24 VAC COMPRESSOR DISABLE INPUT
11
12
13
14
15
ALARM CONTACT OUTPUT
16
ALARM CONTACT OUTPUT
17
18
Deluxe Controls With Reheat
1TB1
1 24 VAC
FAN
2
REVERSING VALVE (COOL)
3
COMPRESSOR
4
5
6 24 VAC COMMON & VAR SPD PUMP SOLENOID
7
8
9 24 VAC COMPRESSOR DISABLE INPUT
10 24 VAC COMPRESSOR DISABLE INPUT
HUMIDISTAT
11
VAR SPD PUMP SOLENOID
12
13
14
15
ALARM CONTACT OUTPUT
16
ALARM CONTACT OUTPUT
17
18
WSHP-SVX01E-EN