White Rodgers 37-5086A Check Thermostat Operation, Heating System, C. Electric Heat Systems

2.Manual Changeover (Heating/Cooling Systems Only)

ON			Switch #1 OFF
			Switch #2 OFF
			Switch #3 (see step B5)
1	2	3

3.Heat Only Systems

ON			Switch #1 OFF
			Switch #2 ON
			Switch #3 (see step B5)
1	2	3

4.Cool Only Systems

ON			Switch #1 ON
			Switch #2 ON
			Switch #3 (see step B5)
1	2	3

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			Switch #1 (see steps B1–B4)
			Switch #2 (see steps B1–B4)
			Switch #3 OFF
1	2	3

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 three-wire heat only systems, or on four-wire heat/ cool systems, if the thermostat display is operating

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 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

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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