Ingersoll-Rand ReliaTel, Manual, Page: 47 / 176

RT-SVD03L-EN 47
ReliaTel ™ ™ Dehumidification Module (RTDM)
RTDM Layout - 27.5 to 50 Tons
The RTDM is installed in the control box section for
Voyager
™ Commercial units with modulating
dehumidification.
Figure 30. 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 -
Reheat Ckt. Entering Evap. Temp. Common
Reheat Ckt. Entering Evap. Temp. Signal
Reheat LPC Signal Input
12 Vdc
2
4
V
A
C
2
4
V
A
C
C
O
M
M
O
N
M
O
D
B
U
S
-
M
O
D
B
U
S
+
RTDM Inputs/Outputs
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.
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.
J5 Output
J5 - 1, 3 provides a normally open contact to be used
for reheat pumpout solenoid control.