Trane ReliaTel - ReliaTel Dehumidification Module (RTDM); RTDM Inputs

RT-SVD03G-EN 43
ReliaTel Dehumidification Module (RTDM)
RTDM Layout
27.5 to 50 Ton
The RTDM is installed in the control box section for V3 units with Modulating Dehumidification.
RTDM Inputs
J4, J2 Inputs:
J4 provides 24VAC power in to the board and MODBUS communication to and from the RTRM. J2
provides 24VAC power and MODBUS communication to the RTOM.
J6 Inputs:
J6 - 2, 3 provides a temperature input for the Reheat Circuit Entering Evaporator Temperature.
J8 Inputs:
J8 - 1, 2 provide 12Vdc to the Reheat LPC switch and an input for the Reheat LPC Signal.
J5 Output
J5 - 1, 3 provides a normally open contact to be used for Reheat Pumpout solenoid control.
J1 Output
J1 - 1, 2, 3, 4 provides the output signals for the Reheat Valve stepper motor control.
J3 Output
J3 - 1, 2, 3, 4 provides the output signals for the Cooling Valve stepper motor control.
Figure 20. ReliaTel Dehumidification Module (RTDM) Layout
J1-1
J4-1
J6-1
J8-1
R50
J3-1
J5-1
Reheat Valve
Motor Control Output
Cooling Valve
Motor Control Output
Reheat Pumpout (NO)
Control Pumpout (COM)
J2-1
J4-1
24 VAC
24 VAC COMMON
MODBUS -
MODBUS +
Reheat Ckt. Entering Evap. Temp. Common
Reheat Ckt. Entering Evap. Temp. Signal
Reheat LPC Signal Input
12 Vdc
24 VAC
24 VAC COMMON
MODBUS -
MODBUS +