Twinning - Trane A801X026AM2SC Installation, Operation And Maintenance Manual

F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n

Twinning

TWINNING CONNECTION DIAGRAM
1 STAGE HEAT / 1 STAGE COOLING THERMOSTAT
1 STAGE HEATING
1 STAGE COOLING
THERMOSTAT FURNACE NO. 1
Y1 Y1
W1
W1
R
G
B
TWINNING CONNECTION DIAGRAM
1 STAGE HEAT / 1 STAGE COOLING
(WITH TRANSFORMER) THERMOSTAT
1 STAGE HEATING
1 STAGE COOLING
THERMOSTAT FURNACE NO. 1
Y1 Y1
W1
W1
R
G
B
38
FURNACE NO. 2
Y1
W1
R1
R
R
G G
B B
FURNACE NO. 2
Y1
ISOLATION RELAY
(FIELD SUPPLIED)
W1
R1
R
R
G G
B B
NOTES:
1. BOTH FURNACES MUST BE POWERED FROM
THE SAME 115 VAC PHASE LEG AT THE CIRCUIT BREAKER.
2. TRANSFORMERS MUST BE IN PHASE.
- MEASURE THE VOLTAGE BETWEEN THE "R" TERMINALS
ON BOTH FURNACES, VOLTAGE SHOULD BE LESS THAN
10 VOLTS.
- IF GREATER, REVERSE THE LOW VOLTAGE ON ONE OF THE
TRANSFORMERS AND RECHECK.
3. HEATING AND COOLING AIRFLOW MUST BE THE SAME FOR
BOTH FURNACES.
ISOLATION RELAY
1 STAGE ODU
(NO TRANSFORMER)
R1
Y1
B
NOTES:
1. BOTH FURNACES MUST BE POWERED FROM
2. TRANSFORMERS MUST BE IN PHASE.
3. HEATING AND COOLING AIRFLOW MUST BE THE SAME FOR
ISOLATION RELAY
R1
OUTDOOR UNIT
(WITH TRANSFORMER)
B
ISOLATION RELAY
(FIELD SUPPLIED)
ALTERNATE CONNECTION
THE SAME 115 VAC PHASE LEG AT THE CIRCUIT BREAKER.
- MEASURE THE VOLTAGE BETWEEN THE "R" TERMINALS
ON BOTH FURNACES, VOLTAGE SHOULD BE LESS THAN
10 VOLTS.
- IF GREATER, REVERSE THE LOW VOLTAGE ON ONE OF THE
TRANSFORMERS AND RECHECK.
BOTH FURNACES.
Y1
From Dwg. 21B341337 Rev. 2
A801X-SVX001-1A-EN