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White-Rodgers 1F97-1277 Big Blue Single Stage Thermostat User Manual
INSTALLATION
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).
WARNING
Thermostat installation and all components of the
control system shall conform to Class II circuits per
the NEC code.
!
Remove Old Thermostat
Figure 1 – Thermostat Base Multi-Stage 1F97-1277
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 adapter
plate. 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.
+
S
Mounting
Hole
Mounting
Hole
-
W/E
6
L
Place Level
across
Mounting Tabs
(for appearance only)
Place Level
across
Mounting Tabs
(for appearance only)
Rear view of thermostat
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.
2 "AA" Batteries
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 mounting holes shown
in Figure 1 and two mounting screws. Leveling is for
appearance only and will not affect thermostat operation.
5. Connect wires to terminal block on base using appropriate
wiring schematic (see diagrams on next page).
6. Push excess wire into wall and plug hole with a fire resis-
tant 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.
WIRING CONNECTIONS
Refer to equipment manufacturers' instructions for specific
system wiring information. After wiring, see CONFIGURA-
TION section for proper thermostat configuration.
For wiring diagrams, see next page.
Wiring diagrams shown are for typical systems and describe
the thermostat terminal functions.
TERMINAL DESIGNATION DESCRIPTIONS
Terminal Designation
Description
B . . . . . . . . . . . . . . . . . . . Changeover valve for heat pump energized constantly in heating
O . . . . . . . . . . . . . . . . . . . Changeover valve for heat pump energized constantly in cooling
Y . . . . . . . . . . . . . . . . . . . Compressor Relay
G . . . . . . . . . . . . . . . . . . . Fan Relay
RC. . . . . . . . . . . . . . . . . . . Power for Cooling
RH. . . . . . . . . . . . . . . . . . . Power for Heating
C . . . . . . . . . . . . . . . . . . . Common wire from secondary side of cooling
L . . . . . . . . . . . . . . . . . . . For Call for Service indicator for systems with diagnostic connection
6 . . . . . . . . . . . . . . . . . . . Powered closed connection for 3-wire zone valve
W . . . . . . . . . . . . . . . . . . . Heat Relay
-. . . . . . . . . . . . . . . . . . . . Common (DC) for wired remote temperature sensor
S . . . . . . . . . . . . . . . . . . . Frequency signal from remote temperature sensor
+ . . . . . . . . . . . . . . . . . . . Power (DC) to remote temperature sensor
2
| General | Details |
|---|---|
| Name | White-Rodgers 1F97-1277 Big Blue Single Stage Thermostat User Manual |
| Make | WHITE RODGERS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.49 MB |
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