Shipping Temperature Range ................. -40 to +150°F (-40 to +65°C)
Dimensions Thermostat...................... 4-9/16"H x 5-13/16"W x 1-3/16"D
To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.
This product does not contain mercur y. However, this
product may replace a product that contains mercury.
Mercury and products containing mercury must not be
discarded in household trash. Do not touch any spilled
mercury. Wearing non-absorbent gloves, clean up any spilled
mercury and place in a sealed container. For proper disposal
of a product containing mercury or a sealed container of
spilled mercury, place it in a suitable shipping container.
Refer to http://thermostat-recycle.org for location to send
the product containing mercury.
PART NO. 37-7194C
Replaces 37-7194B
1045
WARNING
!
INSTALLATION
Mounting
Hole
Mounting
Hole
Place Level
across
Mounting Tabs
(for appearance only)
Place Level
across
Mounting Tabs
(for appearance only)
+
S
-
W/E
6
L
Y2
W2
2 "AA" Batteries
Thermostat installation and all components of the
control system shall conform to Class II circuits per
the NEC code.
Remove Old Thermostat
A standard heat/cool thermostat consists of three basic parts:
1. The cover, which may be either a snap-on or hinge type.
2. The base, which is removed by loosening all captive
screws.
3. The switching subbase, which is removed by unscrewing
the mounting screws that hold it on the wall or adapterplate. Before removing wires from old thermostat,
label each wire with the terminal designation from
which it was attached. Disconnect the wires from the old thermostat one at a time. Do not let wires fall back into
the wall.
Installing New Thermostat
1. Pull the thermostat body off the thermostat base. Forcing
or prying on the thermostat will cause damage to the unit.
2. Place base over hole in wall and mark mounting hole
locations on wall using base as a template.
3. Move base out of the way. Drill mounting holes. If you are
using existing mounting holes and the holes drilled are
too large and do not allow you to tighten base snugly, use
plastic screw anchors to secure the base.
4. Fasten base snugly to wall using the mounting holes
shown in Figure 1 and two mounting screws. Leveling
is for appearance only and will not affect the thermostat
operation.
5. Connect wires to terminal block on base using wiring
schematic on page 3.
6. Push excess wire into wall and plug hole with a fire
resistant material (such as fiberglass insulation) to
prevent drafts from affecting thermostat operation.
7. Carefully line the thermostat up with the base and snap
into place.
Battery Location
2 "AA" alkaline batteries are included in the thermostat at
the factory with a battery tag to prevent power drainage.
Remove the battery tag to engage the batteries.
To replace batteries, set system to OFF, remove thermostat
from wall and install the batteries in the rear along the top
of the thermostat (see Figure 1). For best results, use a
premium brand "AA" alkaline battery such as Duracell
Energizer
®
.
Figure 1 – Thermostat Base Multi-Stage
Rear view of thermostat
®
or
2
WIRING CONNECTIONS
Heat
Pump 1
(HP1)
Heat
Pump 2
(HP2)
Energized in
Cool
& Off
Mode
Energized in
Heat/
Emergency
Mode
System
O
RH
+
B
CLASS II
TRANSFORMER
HOT
24VAC
NEUTRAL
120VAC
W/E
Jumper
G
C
-
W2
Jumper
No
Output
1st
Stage
Heat &
Cool
(Compressor)
**
Blower/
Circulator Fan
Energized on
call for
Heat or
Cool
Comfort
Alert II module
or similar
malfunction
module
Refer to equipment manufacturers' instructions for specific
system wiring information. After wiring, see CONFIGURATION section for proper thermostat configuration.