White Rodgers Heating System 3L09 User Manual

3L09  
Limit Controls  
WHITE-RODGERS  
INSTALLATION INSTRUCTIONS  
Operator: Save these instructions for future use!  
FAILURETOREADANDFOLLOWALLINSTRUCTIONSCAREFULLYBEFORE  
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL  
INJURY AND/OR PROPERTY DAMAGE.  
DESCRIPTION  
This series of limit controls has a normally closed SPST tems. A small bimetal sensing element is located in the air  
switch that opens on temperature rise to limit the maxi- stream for quick response. These controls have a fixed  
mum allowable temperature in forced air heating sys- temperature setting and fixed differential.  
PRECAUTIONS  
THIS CONTROL MUST BE INSTALLED BY A QUALI-  
FIED INSTALLER.  
CAUTION  
!
To prevent electrical shock and/or equipment  
damage, disconnect electric power to system at  
main fuse or circuit breaker box until installation  
is complete.  
All wiring must conform to local and national electrical  
codes and ordinances.  
This control is a precision instrument, and should be  
handled carefully. Rough handling or distorting compo-  
nents could cause the control to malfunction.  
Label all wires prior to disconnection when ser-  
vicingcontrols.Wiringerrorscancauseimproper  
and dangerous operation.  
This control has been accurately calibrated at the factory.  
Any attempt to re-calibrate this control will void the White-  
Rodgers warranty.  
Following installation or replacement, follow  
appliance manufacturers’ recommended instal-  
lation/service instructions to insure proper op-  
eration.  
WARNING  
!
Do not use on circuits exceeding specified volt-  
ages. Higher voltages will damage control and  
could cause shock or fire hazard.  
If in doubt about whether your wiring is millivolt,  
low or line voltage, have it inspected by a quali-  
fied heating and air conditioning contractor or a  
licensed electrician.  
SPECIFICATIONS  
ELECTRICAL RATING:  
Temperature Setting:  
Fixed setting stamped on control  
Resistive: 15 amps @ 120 VAC  
13 amps @ 240 VAC  
9.3 amps @ 277 VAC  
Inductive: 5.8 FLA, 34.8 LRA @ 120 VAC  
2.9 FLA, 13.0 LRA @ 240 VAC  
Pilot Duty: 278 VA  
INSTALLATION  
This control must be mounted in the air stream of the  
appliance. Follow the original equipment manufacturers’  
recommendations for proper location and wiring.  
Wiring  
All wiring must conform to local and national  
electrical codes and ordinances.  
WHITE-RODGERS DIVISION  
EMERSON ELECTRIC CO.  
9797 REAVIS ROAD  
ST. LOUIS, MISSOURI 63123-5398  
PART NO. 37-6133A  
Printed in U.S.A.  
9949  
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