2.Manual Changeover (Heating/Cooling Systems Only)
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| Switch #2 OFF |
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3.Heat Only Systems
ON |
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| Switch #2 ON |
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4.Cool Only Systems
ON |
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| Switch #1 ON | |
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| Switch #2 ON |
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| Switch #3 (see step B5) |
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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
program period, programmed to begin at 6:00 AM, 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.
ON |
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2. Press | FAN | until FAN ON is displayed. The blower |
SWITCH |
should begin to operate (this will work only on sys- tems with a G terminal).
On
properly, but the fan does not operate when | FAN |
SWITCH |
is pressed, the red jumper wire (provided with thermo- 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.
3. Press | FAN | until FAN AUTO is displayed. The |
SWITCH |
blower should stop operating within approximately one minute.
HEATING SYSTEM
1. Press | SYSTEM | until HEAT is displayed (it may already |
SWITCH |
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.)
C. ELECTRIC HEAT SYSTEMS
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), clip wire W14 on the back of the thermostat (see fig. 13). If the thermostat is energizing electric heat sequenc- ers, DO NOT clip wire W14.
CHECK THERMOSTAT OPERATION
NOTE
When checking thermostat, Group B option switches #1 and #2 for automatic changeover must be in the OFF position. This will allow temporary setting of heat setpoints above cool setpoints. After system checkout, reset Group B option switch #1 to ON position if automatic changeover is desired (see SET GROUP B OPTION SWITCHES).
FAN OPERATION
1.Turn on power to the system. If the heat source has a standing pilot, be sure to light it.
LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’ USE ONLY. OPERATORS SHOULD NOT USE THIS FEA- TURE DUE TO POSSIBILITY OF EQUIPMENT OR PROPERTY DAMAGE, OR PERSONAL INJURY.
COMPRESSOR SHORT TERM
CYCLE PROTECTION
This thermostat has a
while testing thermostat operation, simply press PRGMADV
and HOLDTEMP buttons at the same time at initial startup.
DO NOT USE THE LOCKOUT BYPASS OPTION UNLESS THE COMPRESSOR OIL HEATERS HAVE BEEN OPERATIONAL FOR 6 HOURS AND THE SYSTEM HAS NOT BEEN OPERATIONAL FOR AT LEAST 5 MINUTES.
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