MovinCool CM25 Service Manual - Manual (Page 32)

Operation Section
32
5.5 Field-Supplied Millivolt Wall Thermostat (MWT) Connection
• The CM 25 is equipped with terminals for connection to the MWT. The MWT can be installed for
convenient access in any room.
- Use with a single- and multi-stage system wall thermostat.
Thermostat type: Millivolt system
- Most wall thermostats provide these basic functions:
Fan Mode: On/Auto (Selects the desired fan mode.)
System: Cool/Heater (Selects Cool only.)
- Unit receives signals from the MWT to perform the following operations.
< NOTE >
Terminal No. G1 is used only with the MWT that has Fan Hi-Lo speed control.
Use the recommended extension cord size from 16 AWG to 26 AWG for a solid wire.
I003166
L– L+ E– E+ G4 C4 P RC Y1 Y2 G G1
G
L– L+ E– E+ G4 C4 P RC Y1 Y2 G G1
G
Terminal No. Function
RC
Y1
Y2
G
G1
Common
Cool MIN
Cool MAX
Fan HI
Fan LO
Terminal No. Function
RC
Y (Y2)
G
G1
Common
Cool
Fan HI
Fan LO
Unit Terminal
Ground Screw
Wall Thermostat
(Multi-Stage System)
Unit Terminal
Ground Screw
Wall Thermostat
(Single-Stage System)
Multi-Stage System Single-Stage System