Instruction/ maintenance manual of the product 37-6186B White Rodgers
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COMFOR T -SET 90 ® SERIES HEA T PUMP INST ALLA TION/CONFIGURA TION This White-Rodgers Automatic Setback Digital Thermostat uses microcomputer technology to provide precise time and 1F94-371 : 7 Day programming; residen- tial applications ELECTRICAL DA T A Electrical Rating: 20 to 30 V AC, 50/60 Hz with common 0.
2 Figure 1. Thermostat base and terminals R C R C EW 2 W 1 Y 2 Y 1 B O G P H D S AS BS C OT L 1 2 3 4 1 5 W3 A1 E2 P A TTENTION! This product does not contain mercury . However , this product may replace a unit which contains mercury . Do not open mercury cells.
3 HEA T PUMP TERMINAL OUTPUTS Refer to equipment manufacturers’ instruc- tions for specific system wiring information. Y ou can configure the thermostat for use with the following heat pump system types: HEA T PUMP TYPE 1. Single-stage compressor system; gas or electric backup.
4 RESET SWITCH See the T roubleshooting section at the end of this document for more information about the function of this switch. E2/P SWITCH The E2/P switch is located on the back of the thermostat body (see fig. 2). This switch controls how the E2/P terminal of the thermostat will be energized.
5 * NOTE: COMP LOCK OFF permanently defeats compressor lockout. Y ou must turn this selection ON if you do not have a system that already pr ovides compressor short-cycle protection. Please see “Lockout Bypass Option” to temporarily override compressor lockout.
6 These numbers are approximate and represent operation with a typical system. Actual temperature differentials and run times may vary widely based on your building and equip- ment, as well as outdoor temperature conditions. The chart below shows how this adjustment range affects thermostat performance.
7 (Installer table step 16). If you wish to sense indoor temperature using ONL Y the remote sensor(s), use this menu item to disable the temperature sensor in the thermostat (designated as the L sensor).
WHITE-RODGERS EMERSON ELECTRIC CO. 9797 REAVIS ROAD ST. LOUIS, MISSOURI 63123-5398 www.white-rodgers.com TROUBLESHOOTING RESET BUTTON If the thermostat does not respond when keys are pressed, or the thermostat is not operating properly , you may use the reset button located on the back of the thermostat body (see fig.
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