Trane ReliaTel - Page 16

16 RT-SVD03G-EN
Module Flow Diagram
Figure 6. Economizer Module (RTEM)
Refrigeration
Module
24 VAC
ReliaTel Economizer Module
Power Exhaust
ModBus Communication
24 VAC
PWR
EXH
relay
D
B
A
C
Enthalpy/Temperature
Setpoint Pot.
DCV Setpoint LL
300-1900 ppm
(RTRM v8.0 & later)
DCV Setpoint UL
500-1500 ppm (pre-RTRM
v8.0)
1000-2000 ppm (RTRM
v8.0 & later)
Mixed Air Temp (AIP)
10K 25C Neg Coeff
Return Air Relative Humidity (AIP)
4-20 mA Pos Coeff
Return Air Temp (AIP)
10K 25C Neg Coeff
Outdoor Air Relative Humidity (AIP)
4-20 mA Pos Coeff
IAQ Sensor (C0
2
) (AIP)
0-10 VDC
Remote Minimum Position Pot. (AIP)
0-270 Ohm
MA Sensor
RH Sensor
RA Sensor
RH Sensor
Potentiometer
C0
2
Sensor
Status LED
E
DCV Mode
24 VAC
DCV Min Pos 0-40/50%
Design Min Pos 0-10/50%
RTEM