TYPE 2A37
WHITE-RODGERS
HEATING
TEMPERATURE CONTROL
Adjustable Differential
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
This
The speed of response of the temperature sensitive element makes it particularly applicable to warehouses, factories, garages and similar installations.
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 compo- nents could cause the control to malfunction.
This control has been accurately calibrated at the factory. Any attempt to calibrate this control will void the White- Rodgers warranty.
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- ages. Higher voltages will damage control and could cause shock or fire hazard.
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| SPECIFICATIONS |
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ELECTRICAL DATA | THERMAL DATA | |
Switch Action: S.P.S.T. - Open on Rise | Range: 20° to 90°F | |
| Differential: 3° to 20°F (1.7° to 11°C) Adj. | |
When the temperature in the controlled area rises, the fluid in the coiled element expands, causing the contacts in the switch mechanism to snap open, turning off the heating system.
PRINCIPLE OF OPERATION
As the air cools in the controlled area, the fluid in the coiled element contracts. When the temperature drops to the control setting, the contacts snap closed turning on the heating system.
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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. |
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9999 HWY. 48, MARKHAM, ONT. L3P 3J3 |
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(905) |
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PART NO.
Replaces
