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White-Rodgers is a division 
of Emerson Electric Co.

The Emerson logo is a  
trademark and service mark 
of Emerson Electric Co.

Homeowner Help Line:  1-800-284-2925

www.white-rodgers.com

www.emersonclimate.com

Содержание White-Rodgers 1E78

Страница 1: ...ical power to the system at the main fuse or circuit breaker until installation is complete PART NO 37 6599B Replaces 37 6599A 1026 Failure to follow and read all instructions carefully before installing or operating this control could cause personal injury and or property damage Assemble tools required as shown below WIRE CUTTER STRIPPER Base Back of Thermostat Body RC G RH Y O B W W904 W905 Moun...

Страница 2: ... thermostat to operate properly with your system Thefactorydefaultsettingisforcedairheat ClippingjumperW905on the circuit board will produce a longer heating cycle which is normally for hot water or steam hydronic systems Both settings produce a very accurate temperature control and can be set to your personal preference As received the thermostat cycles the system just under 1 F With W905 clipped...

Страница 3: ...re 7 Typical wiring diagram for heat pump with reversing valve energized in HEAT TRANSFORMER Reversing Valve RC O B JUMPER WIRE Compressor Contactor JUMPER WIRE Reversing valve is energized when the system switch is in the HEAT position Fan Relay If at any time during testing your system does not operate properly contact a qualified service person Fan Operation If your system does not have a G ter...

Страница 4: ...ture F C CONVERTIBILITY The factory default setting is Fahr enheit Clipping W904 jumper on the circuit board see fig 1 will alter this feature to Celsius temperature setting LOW BATTERY INDICATOR If the 2 AAA alkaline batteries are low and should be replaced the display will be blank except for When the batteries are low pressing any but ton will cause the display to operate for ten seconds After ...

Страница 5: ...ion to thermostat or system 3 Furnace Lock Out Condition Heat may also be 4 intermittent 5 Heating system requires service or thermostat requires replacement Re light pilot Set SYSTEM Switch to HEAT and raise setpoint temperature above room temperature Verify thermostat and system wires are securely attached Many furnaces have safety devices that shut down when a lock out condition occurs If the h...

Страница 6: ... off more frequently but runs for a shorter time so there is no increase in energy use If you would like to increase the cycle time clip Jumper W 905 as mentioned in the instructions for Hydronic Heating Systems It is not possible to shorten the cycle time If an accept able cycle rate is not achieved as received or by clipping W 905 contact a local service person for additional suggestions Cooling...

Страница 7: ...www white rodgers com NOTES ...

Страница 8: ...White Rodgers is a division of Emerson Electric Co The Emerson logo is a trademark and service mark of Emerson Electric Co Homeowner Help Line 1 800 284 2925 www white rodgers com www emersonclimate com ...

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