Trane ReliaTel Diagnostic Manual page 13

Figure 3. Refrigeration Module (RTRM) Heat Pump
Unit Control, Select one
Zone Sensor
Mechanical
Thermostat
G Y1 Y2 O
W2 X2 T
R C/B
Zone Sensor
Programmable
COMM 3/4
Communication
Interface
24 VAC
Power
RT-SVD03G-EN
WS Refrigeration Module
4 Zone Sensor Inputs (AIP)
4 Outputs
LED or indications
No Electric Heat Configuration (BIP)
(open when heaters installed)
7 Thermostat inputs (BIP)
3 to 7 wire Communicating ZSM
MODBUS Communication
Outdoor Air Temp (AIP)
Options
Module
Economizer
Module
w/Actuator
1 Stage Electric Heat Config. (BIP)
(open when 2 Stage
heaters installed)
Indoor Fan Output
Outdoor Fan Output
Switchover Valve Output
Compressor 1 Output (BOP)
Compressor 1 Proving (BIP)
Electric Heat 2nd Stage
Compr 1 Disable (BIP)
Emergency Stop (BIP)
Service Test input (BIP)
Outdoor Air Temp (AIP)
Coil Sensor Temp (AIP)
LEDs: System TX, RX
Module Flow Diagram
IDF
ODF
SOV
CC1
Electric
Heat 1
Electric
Heat 2
Resistor
Sensor
Sensor
RTRM
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