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WHITE-RODGERS 1F90-71 5-Day 2-Day Electronic Digital Thermostat Instruction Manual
2. Manual Changeover (Heating/Cooling Systems
Only)
FAN
SWITCH
2. Press
until FAN ON is displayed. The blower
should begin to operate (this will work only on sys-
tems with a G terminal).
ON
Switch #1 OFF
Switch #2 OFF
Switch #3 (see step B5)
1
2
3
Onthree-wireheatonlysystems,oronfour-wireheat/
cool systems, if the thermostat display is operating
3. Heat Only Systems
FAN
SWITCH
ON
properly, but the fan does not operate when
Switch #1 OFF
Switch #2 ON
Switch #3 (see step B5)
ispressed,theredjumperwire(providedwiththermo-
stat) may not be properly installed between the RH
and RC terminals. Disconnect electrical power to
system and properly install the jumper wire per the
appropriate wiring diagram.
1
2
3
4. Cool Only Systems
ON
Switch #1 ON
Switch #2 ON
Switch #3 (see step B5)
1
2
3
FAN
SWITCH
3. Press
until FAN AUTO is displayed. The
blower should stop operating within approximately
one minute.
5. Computed Energy Management Recovery
(EMR) — With EMR enabled, system will be ener-
gized before the next program period begins, to
achieve programmed temperature by the beginning
of the next program period (the thermostat’s micro-
computer calculates 15 minutes for every 2°F tem-
perature change). For example, assume that the
thermostat is programmed to provide an overnight
heating temperature of 62°F, and during the next
programperiod,programmedtobeginat6:00AM,the
programmed temperature is 70°F. With EMR acti-
vated, the thermostat will automatically activate the
heating system at 5:00 AM, so that the programmed
temperature of 70°F is reached by about 6:00 AM.
HEATING SYSTEM
SYSTEM
SWITCH
1. Press
untilHEATisdisplayed(itmayalready
be displayed).
2. Press
to adjust thermostat above room tem-
perature to call for heat. The heating system should
begin to operate.
(Instructions continue on next page.)
ON
Switch #1 (see steps B1–B4)
Switch #2 (see steps B1–B4)
Switch #3 OFF
1
2
3
C. ELECTRIC HEAT SYSTEMS
LOCKOUT BYPASS OPTION
For central electric heat systems where the blower is
energized by a separate circuit through the fan relay
(meaning that the fan turns on immediately on call for
heat), clipwireW14onthebackofthethermostat(seefig.
13). If the thermostat is energizing electric heat sequenc-
ers, DO NOT clip wire W14.
FOR QUALIFIED SERVICE TECHNICIANS’ USE
ONLY.OPERATORSSHOULDNOTUSETHISFEA-
TURE DUE TO POSSIBILITY OF EQUIPMENT OR
PROPERTY DAMAGE, OR PERSONAL INJURY.
COMPRESSOR SHORT TERM
CYCLE PROTECTION
CHECK THERMOSTAT OPERATION
NOTE
This thermostat has a built-in short term (5-minute)
time delay. During this 5-minute period, the thermo-
stat will lock out the compressor to allow head pres-
sure to stabilize. If you want to override this feature
ADV
When checking thermostat, Group B option switches #1
and #2 for automatic changeover must be in the OFF
position.Thiswillallowtemporarysettingofheatsetpoints
above cool setpoints. After system checkout, reset Group
Boptionswitch#1to ONpositionifautomaticchangeover
is desired (see SET GROUP B OPTION SWITCHES).
while testing thermostat operation, simply press
PRGM
HOLD
and
buttons at the same time at initial startup.
TEMP
FAN OPERATION
DO NOT USE THE LOCKOUT BYPASS OPTION
UNLESSTHECOMPRESSOROILHEATERSHAVE
BEEN OPERATIONAL FOR 6 HOURS AND THE
SYSTEM HAS NOT BEEN OPERATIONAL FOR AT
LEAST 5 MINUTES.
1. Turn on power to the system. If the heat source has
a standing pilot, be sure to light it.
7
| General | Details |
|---|---|
| Name | WHITE-RODGERS 1F90-71 5-Day 2-Day Electronic Digital Thermostat Instruction Manual |
| Make | WHITE RODGERS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.13 MB |
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