Home > WHITE RODGERS > White-Rodgers 1F97-1277 Big Blue Single Stage Thermostat User Manual
White-Rodgers 1F97-1277 Big Blue Single Stage Thermostat User Manual
WIRING CONNECTIONS
Single Stage Connections
Refer to equipment manufacturers' instructions for specific system
wiring information.
This thermostat is designed to operate a single-transformer or two-
transformer system.
SINGLE STAGE gas, oil or electric.
After wiring, see INSTALLER CONFIGURATION section for proper
thermostat configuration.
You can configure the thermostat for use with the following systems:
Single Stage System with Single Transformer
To Remote Temperature Sensor
Jumper
B
O
RC
+
Y
G
RH
C*
S
-
W
6
L
System
Blower/
Circula-
tor Fan
Energiz-
ed on
DC
DC
Return
to
Energized
on call
Single
Stage
(SS)
supply
voltage
to re-
24 Volt
Com-
mon
Remote
Temp-
erature
Sensor
signal
Third
Diagnostic
Indicator
(See
Energized Energiz-
24 Volt
(Hot)
Heat
Energized
on call for
Heat
24 Volt
(Hot)
Cool
wire for
3-wire
zone
for Cool
(Com-
pressor)
in Heat
or Off
Mode
ed in
Cool
Mode
Remote
Temp-
erature
Sensor
call for
Cool &
for Heat
(if ELE
is sel-
mote
(option-
al)
1
Note
)
Temp-
erature
Sensor
valve
ected)
NEUTRAL
24VAC
HOT
120VAC
CLASS II
TRANSFORMER
* Common connection
required for fault or
malfunction indication
and remote sensor.
Single Stage with Two Transformers
To Remote Temperature Sensor
Remove Jumper Wire
between RH & RC
NOTE: If continuous backlight or hardwired
power input are desired but do not function
in both HEAT and COOL modes, cut the
heating transformer 24V wires and tape off.
Connect the neutral circuit disconnected
from the heating transformer to the neutral
circuit of the cooling transformer. Discon-
nect the wire to the RH terminal and install
a jumper between RH and RC. Depending
on the system requirements, replace the
cooling transformer with a 75VA class II
transformer if needed.
Jumper
B
O
RC
+
Y
G
RH
C*
S
-
W
6
L
System
Blower/
Circula-
tor Fan
Energiz-
ed on
DC
DC
Return
to
Energized
on call
supply
voltage
to re-
24 Volt
Com-
mon
Remote
Temp-
erature
Sensor
signal
Single
Stage
(SS)
Energized Energized
in Cool
Mode
Diagnostic
Indicator
(See
24 Volt
(Hot)
Heat
Energized
on call for
Heat
Third wire
for 3-wire
zone valve
24 Volt
(Hot)
Cool
for Cool
(Com-
pressor)
in Heat,
Off Mode
Remote
Temp-
erature
Sensor
call for
Heat or
Cool
mote
(option-
al)
Temp-
erature
Sensor
1
Note
)
(if ELE
is sel-
ected)
NEUTRAL
120VAC
24VAC
HOT
NEUTRAL
24VAC
HOT
120VAC
COOLING
CLASS II
TRANSFORMER
* Common connection
required for fault or
malfunction indication
and remote sensor.
HEATING
CLASS II
TRANSFORMER
NOTE ➀: Connection for Call for Service diagnostic indicator compatible with mechanical or electronic condenser control with Comfort AlertTM.
3
| 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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