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| Fan & Limit Control |
| INSTALLATION INSTRUCTIONS |
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Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.
This fan and limit control combines, in one enclosure, a fan switch with an adjustable differential which operates the blower in a forced warm air furnace and a limit switch with a fixed differential which automatically shuts off the burner if the furnace temperature exceeds a predeter- mined high point.
DESCRIPTION
A summer fan switch is incorporated in this control to provide a convenient method for manual operation of the fan for air circulation during the summer.
THIS CONTROL MUST BE INSTALLED BY A QUALI- FIED INSTALLER.
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.
This control has been accurately calibrated at the factory. Any attempt to
!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.
PRECAUTIONS
!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.
Label all wires prior to disconnection when ser- vicing controls. Wiring errors can cause improper and dangerous operation.
Following installation or replacement, follow appliance manufacturers’ recommended instal- lation/service instructions to insure proper op- eration.
INSTALLATION
Removing Cover
To remove cover from control, grasp cover at top and bottom and pull outward. Grasping the cover by its sides will make removal more difficult.
Location
1.The bimetal element should not be too close to any hot surfaces of the heat exchanger. The element should always be at least 3“ away from any hot surfaces unless the position has been determined acceptable by the furnace manufacturer.
2.If this is a new application, please consult the original equipment manufacturer for proper location.
Mounting, For Flush Mounting (Vertical or
Sloping Surface)
1.Insert the element tube into the bonnet and attach control case with #10 screws. (Two screws, diago- nally located, are sufficient.)
2.Replace control cover after wiring and making any adjustments to the settings.
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EMERSON ELECTRIC CO. |
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9797 REAVIS RD., ST. LOUIS, MO. | Printed in U.S.A. | |
(314) | ||
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PART NO.
Replaces
9999 HWY. 48, MARKHAM, ONT. L3P 3J3 | 9714 |
(905) |
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