Thermostat Location
Turn off power to HVAC system
.The Limit
Stat™ should be installed in a location that
represents the ambient space temperature. Do
not install the thermostat in an area where
drafts are present, near the floor, behind doors
or on an external wall. Avoid placing the
thermostat in areas where the air movement is
limited, affected by direct sunlight or other areas
not typical of the temperature in the space.
1
Mounting the Subbase
When mounting the subbase, be aware that
drafts may travel down wall cavities and enter
the back of the thermostat through the control
wire hole in the wall. It is important to seal the
hole to prevent any drafts that might affect the
internal temperature sensor.
Pull the control wires through the large opening
in the thermostat subbase then level and mount
the subbase on the wall using the supplied
anchors and screws.
Do not over tighten the
mounting screws as the subbase may warp
causing improper seating of the thermostat
connecting pins to the terminal block.
2
Limit Stat™
2
C
G
W1
Y1
RH
RC
B/O
W2
Y2
Use a properly sized screwdriver and land each
wire to its dedicated terminal as illustrated in
Section 4.
Check to ensure that all wires are landed
correctly and dressed properly to prevent any
shorts.
G
FAN
W1
HEAT
Y1
COOL
RH
24V HEAT (HOT)
RC
24V COOL (HOT)
B/O
REVERSING VALVE
(HEAT PUMP ONLY)
C
24V (COMMON)
G
FAN
W1
HEAT
Y1
COOL
RH
24V HEAT (HOT)
RC
24V COOL (HOT)
B/O
REVERSING VALVE
(HEAT PUMP ONLY)
If system has a single 24V transformer, leave
factory jumper between RH and RC.
If system has a separate heating and cooling
transformer, remove factory jumper and wire RH
to heating transformer and RC to cooling
transformer. For LSL-HCW models, wire C to
only one 24V transformer common.
Do not over tighten the terminal
screws.
Model LSL-HCB (Battery Powered)
Model LSL-HCW (Hardwired)
Heat / Cool Systems
3
Terminal Designations
4
Typical Wiring Diagrams
C
G
W1
Y1
RH
RC
B/O
W2
Y2
24V Common (LSL-HCW Only)
Fan
Heat (Not used for cooling only system)
Cool (Not used for heating only system)
24V Heating Transformer (Hot)
24V Cooling Transformer (Hot)
