Install Instructions

7 33-00135EFS—03
4. For compressor applications: Leave the jumper between termi-
nals J and R in place.
For boiler applications: Remove the jumper between terminals J
and R.
Fig. 5. Terminal Designations showing the jumper
between J and R terminals.
5. For compressors and boilers:
Connect a 24 VAC power source
to the R and C terminals on the ERM.
Fig. 6.
Once power is connected, the “Compressor” (or “Boiler”) LED should
illuminate green. (Fig. 7)
Fig. 7.
MCR35657
C
Y
D
L
S1
S1
FOR COMPRESSOR:
Jumper J and R
FOR BOILER:
Remove Jumper
J
R
O/B
T
Y2
T
M35658
C
Y
D
L
S1
S1
24V CAN COME FROM AIR HANDLER
(COMPRESSOR APPLICATION)
OR EXTERNAL TRANSFORMER
J
R
O/B
T
Y2
T
24
VAC
V c.a.
OR
MCR35659
CONNECTED LED STATUS
Connect
Flash
ing: Device Connecting
Gree
n: Device Connected
Red: Not Communicating
Compressor
Boiler
Connected
MCR35660
CONNECTED LED STATUS
Connect
Flash
ing: Device Connecting
Gree
n: Device Connected
Red:
Not Communicating
Compressor
Boiler
Connected
33-00135EFS_B.book Page 7 Wednesday, November 11, 2015 11:31 AM