Systems Controls & Instruments CEM-24 Series Owner's Manual page 9

Front plate – jumper configuration:
Jumper No.
Internal Sensor Control
JP1
External sensor control
4 minutes delay for compressor
JP3
No delay
Clock mode – 24 hours
JP4
Clock mode – 12 hours (AM/PM)
"OUT,OUT" outputs not active
JP5
"OUT,OUT" outputs active
HC (Heat/Cool)
JP6
HP (Heat Pump)
In HP
JP7
In HC
Base plate – jumper configuration:
Jumper No.
24Vac to "W1" output.
The "W1" and "MIL" outputs are
JP1
used to connect 2-wire Millivolt
system (dry contact)
USE ONLY IN HC! (JP6 = Open)
Function
Heat Pump in Cool
Heat Pump in Heat
Heat mode - Electric
Heat mode - Oil/Gas
Function
Position Default
"B" Position
"A" Position
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Position Default
"3" Position
"1" Position
X
X
X
X
X
X
X
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