TYPE 5A75
WHITE-RODGERS
FAN & LIMIT CONTROL
INSTALLATION INSTRUCTIONS
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.
DESCRIPTION
The
The fan switch is designed to control blower operation. It will start the fan circulating warm air when the bonnet temperature reaches the
The warm air limit switch is designed to act as a safety switch which automatically shuts off the burner when the furnace temperature reaches a dangerously high point, regardless of the cause.
The limit switch of these controls has special contacts which are suitable for use on low voltage and millivolt (thermocouple generator type) circuits as well as line voltage equipment such as gas valves, oil burner motors, etc.
PRECAUTIONS
THESE CONTROLS MUST BE INSTALLED BY A QUALIFIED INSTALLER.
Do not exceed the specification ratings.
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 components could cause the control to malfunction.
This control has been accurately calibrated at the factory. any attempt to calibrate this control will void the
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.
WARNING
Do not use on circuits exceeding specified volt- age. Higher voltage will damage control and could cause shock or fire hazard.
If the furnace manufacturer has made provision for, or recom- mendations for location of this control, then follow those instruc- tions. If not, the following suggestions should be observed.
The temperature sensitive bulbs should be positioned in the furnace bonnet so that they will be located in the area which is subjected to the most rapid temperature changes.
INSTALLATION
Avoid locations where there may be dead air spots or stratifica- tion affecting free air circulation. Corners, sharp turns, baffles or other obstructions usually cause these conditions. Do not locate the control elements where the
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EMERSON ELECTRIC CO. |
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9797 REAVIS RD., ST. LOUIS, MO. 63123 |
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(314) | Printed in U.S.A. |
9999 HWY. 48, MARKHAM, ONT. L3P 3J3 |
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(905) |
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PART NO.
Replaces