Trane A5HP5 - Page 11

88-A5HP5001-1B-EN 11
With Furnace
1. Units with pigtails require wirenuts for connections.
Cap all unused wires.
2. For 24V control, connect factory supplied harness to
circuit board at evaporator.
Complete all other wiring connections at the furnace
3. For 2 stage systems, connect W2 to W2 and Y2 to Y2.
Thermostat
Evaporator Coil MCB
Outdoor
Unit
Furnace
R
G
B
R
G
B
B
R
G
B/C
Y
W1
W2
R
24 VAC HOT
FAN
24 VAC
Common
COOL
HEATING
BK BK BKi
O O
Y
l
Y
l
Y
O
Y2
X2
R
G
B
W1
W2
BK
O
Y
l
Y/Y1
Y2
3)
3)
3)
3)
With A5AH4With A5AH6 With 5TAM5
1. Units with pigtails require wirenuts for connections.
2. Cap all unused wires.
3. In AC systems, for multiple stages of electric heat,
jumper W1 and W2 together if comfort control has
only one stage of heat.
1. Units with pigtails require wirenuts for connections.
2. Cap all unused wires.
3. In AC systems for multiple stages of electric heat,
jumper W1 and W2 together if comfort control has
only one stage of heat.
1. Units with pigtails require wirenuts for connec-
tions.
2. Cap all unused wires.
3. When BK is used, do not connect Y2 at the air
handler.
4. When BK is used, cut the jumper between R and
BK on the control board. See indoor wiring
schematic for details.
5. In AC systems, for multiple stages of electric heat,
jumper W1 and W2 together if comfort control has
only one stage of heat.
Thermostat Air Handler
Outdoor
Unit
Thermostat Air Handler
Outdoor
Unit
Thermostat Air Handler
Outdoor
Unit
R
G
B
W1
W2
B
R
G
B/C
Y
W1
W2
R
Blue
24 VAC HOT
FAN
24 VAC
Common
COOL/HEAT
1st STAGE
HEATING
1st STAGE
HEATING
2nd STAGE
HEATING
3rd STAGE
Pink
White
OO O
Y
l
Y
COOL/HEAT
2nd STAGE
Y
COOL/HEAT
2nd STAGE
Y
COOL/HEAT
2nd STAGE
Y
O
Y
W3
Brown
3)
Y2
W3
Brown
R
G
B
W1
W2
B
R
G
B/C
Y
W1
W2
R
Blue
24 VAC HOT
FAN
24 VAC
Common
COOL/HEAT
1st STAGE
HEATING
1st STAGE
HEATING
2nd STAGE
Pink
White
OO O
Y
l
Y
O
Y
Y2
R
G
B
W1
W2
B
R
G
B/C
Y
W1
W2
R
Blue
24 VAC HOT
FAN
24 VAC
Common
COOL/HEAT
1st STAGE
HEATING
1st STAGE
HEATING
2nd STAGE
Pink
White
OO O
Y
l
Y
O
Y
Y2
BK
WH/BLK
3)
3)
5)
Mitigation Board Guidelines
• The approved ID/OD combination will provide sufficient safe ventilation in case of a leak.
• Refer to Indoor Unit Installer’s Guide for correct specifications on indoor unit install.
• All systems require mitigation boards so an altitude adjustment factor may be required.
• Mitigation Control Board needs to be included in an A2L System.