Reliatel Dehumidification Module (Rtdm); Rtdm Layout; Rtdm Inputs - Trane ReliaTel Diagnostic Manual

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.
Figure 20. ReliaTel Dehumidification Module (RTDM) Layout
J1-1
Reheat Valve
Motor Control Output
J3-1
Cooling Valve
Motor Control Output
J5-1
Reheat Pumpout (NO)
Control Pumpout (COM)

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.
RT-SVD03G-EN
J2-1
J4-1 J4-1
24 VAC
24 VAC COMMON
MODBUS -
MODBUS +
Reheat Ckt. Entering Evap. Temp. Common
Reheat Ckt. Entering Evap. Temp. Signal
J6-1
Reheat LPC Signal Input
12 Vdc
J8-1
R50
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