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Summary of Contents for 387.910100

Page 1: ... a d a l l I n s t r u c t i o n s Carefully Before Starting the I n s t a l l a t i o n For thermostat to operate properly Y O U M U S T W I R E I T C O R R E C T L Y Put tabs on wires See Page 4 Note 7 A D J U S T H E A T A N T I C I P A T O R See Page 3 Page 6 Para 1 S T O P Save This Manual For Future Reference SEARS ROEBUCK AND CO Chicago IL 60684 U S A P r i n t e d i n U S A ...

Page 2: ...voltage will damage control could c a u s e s h o c k o r fi r e h a z a r d T h i s t h e r m o s t a t c a n n o t b e u s e d o n Millivolt systems self generating systems that do not have atransformer or relay Three wire zone valve systems H e a t p u m p s y s t e m s Two stage heat or cool systems Those ELECTRIC HEATING systems where B l o w e r c o m e s o n I M M E D I A T E L Y w h e n th...

Page 3: ... 6 7 Independent Temperature Levers Lever with red line in cover slot for high temperature settings Lever with blue line in cover slot for low temperature settings 8 S w i t c h P i n s applications Provided in parts envelope along with Jumper Wire and 2mounting screws p L e t s G e t S t a r t e d The instructions are presented in two parts 1 Instructions for replacing an existing thermostat page...

Page 4: ... each wire before removing from old thermostat Just 1 After fi nding type thermostat 5B above and Fig 9 USE SELF ADHESIVE WIRING mmuie LABELS to identify each wire Discard o t h e r s w h i c h a r e n o t u s e d 2 Disconnect the wiresoneata time Attach to each wire the label that matches that wire s terminal marking on old thermostat Do this before you disconnectthe next wire Notice the label ha...

Page 5: ... a s e 5 Mount thermostat to subbase and tighten captive screws All captive screws should be tightened since they are electrical connections to the heating system See Figure 13 F I G 1 0 M O U N T I N G H O L E S S W I T C H P I N S S W I T C H I N G SUBBASE F R O N T V I E W REAR VIEW N E W 2 W I R E T H E R M O S T A T F I G 11 O L D 0 3 WIRE SERIES 10 P R I M A R Y C O N T R O L JUMPER F I G 1 ...

Page 6: ...erature selection 2 Holding timer dial securely remove each BLUE c o d e d t i m e r s e l e c t o r R e i n s t a l l t h e m a t t h e desired time to start each LOW set back temperature selection 3 T w o a d d i t i o n a l s e t s o f s e l e c t o r s a r e i n s i d e t h e cover Use them if additional set back set up periods are desired Atotal of three set back set up periods may be program...

Page 7: ...n the AUTO position which will cause the fan to cycle with the heating or cooling system When the Switch is moved to the ON position the fan furnace blower will run continuously to provide constant air c i r c u l a t i o n On heating only systems the fan will operate only when the furnace is heating S E T S Y S T E M S W I T C H Select COOL OFF or HEAT R E D M A R K 5 0 6 0 7 0 BLUE MARK B L U E ...

Page 8: ...refer to Start and Set Timer page 6 D BATTERY POSITIVE END v 2 i U i R E P A I R P A R T S S E A R S H E A T I N G C O O L I N G O R H E A T I N G O N L Y T H E R M O S T A T M O D E L 3 8 7 9 1 0 1 0 0 Always Order by Part Number not by Key Number P a r t Key Description N o N o C o v e r 1 5 Volt AA Alkaline Battery T h e r m o s t a t 2 4 H o u r T i m e r with Time Selectors Adjustable Heat An...

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