YOUR THERMOSTAT REPLACES
System Models
Standard Heat Only Systems
1E30N-910
1E50N-301
Electric Furnace
Heat Pump (No Aux or Emergency Heat)
Gas or Oil Heat
Millivolt Heat Only Systems
1
PREPARATIONS
Assemble tools required: power drill, fl at blade screwdriver, wire cutter/stripper, level.
Failure to follow and read all instructions carefully before installing or op-
erating this control could cause personal injury and/or property damage.
2
THERMOSTAT FEATURES
Captive
screws
Mounting
Screw
Mounting
Screw
COVER
THERMOSTAT
BASE
WALLPLATE
SWITCHING
SUBBASE
S
Y
S
T
E
M
O
F
F
H
E
A
T
G
W
RH
Mounting
Screw
50
60
70
80
90
50 60
70 80
90
4
Figure 1. Thermostat with subbase or wallplate
To prevent electrical shock and/or equipment damage, disconnect electrical
power to the system at the main fuse or circuit breaker until installation is
complete.
CAUTION
!
Before removing wires from old thermostat’s switching subbase, label each wire with
the terminal designation it was removed from.
1. Remove
Old
Thermostat:
A standard thermostat consists of three basic parts:
a. The cover, which may be either a snap-on or hinge type.
b. The base, which is removed by loosening all captive screws.
c.
The switching subbase, which is removed by unscrewing the mounting
screws that hold it on the wall or adaptor plate.
Make a note here
of the anticipator setting on the old thermostat
for future reference and use in step 5.
The heat anticipator pointer, if adjustable, will be set at one of a series of numbers
representing the current rating of the primary control in your furnace. The number will
be one of the following: .2, .4, .8, etc. or 0.2, 0.4, 0.8, etc.
3
REMOVING OLD THERMOSTAT
Installation Instructions for:
Vertical
Snap Action
1E30N-910
1E50N-301
