White Rodgers 758-1, 757-1 User Manual
757-1 Fan Control
WHITE-RODGERS
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.
The Fan control is a normally open SPST switch which
closes on a rise in temperature and has an adjustable
temperature setting.
The Limit control is a normally closed SPST switch which
opens on a rise in temperature to limit the maximum
allowable temperature and has an adjustable temperature setting.
THIS CONTROL MUST BE INSTALLED BY A QUALIFIED 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 components could cause the control to malfunction.
This control has been accurately calibrated at the factory.
Any attempt to re-calibrate this control will void the WhiteRodgers warranty.
WARNING
!
Do not use on circuits exceeding specified voltages. 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 qualified heating and air conditioning contractor or a
licensed electrician.
758-1 Limit Control
INSTALLATION INSTRUCTIONS
DESCRIPTION
This control is particularly well suited for use where space
limitations are a problem. The small bimetal sensing
element is completely in the air stream to give quick
response. This control has a snap-action switch with
heavy duty contacts.
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 servicing controls. Wiring errors can cause improper
and dangerous operation.
Following installation or replacement, follow
appliance manufacturers’ recommended installation/service instructions to insure proper operation.
AC ELECTRICAL RATINGS:
8 Amps at 120 VAC or 4 Amps at 240 VAC
Pilot Duty: 125 VA
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
SPECIFICATIONS
Temperature Ratings:
Fan control - Variable 70° to 160°F (21° to 71°C).
Fixed differential 25°F (14°C)
Limit control - Variable 110° to 200°F (43° to 93°C).
Fixed differential 25°F (14°C)
PART NO. 37-5788A
Printed in U.S.A.
9721
INSTALLATION
This control is designed for flush mounting and to be
located directly in the air stream
Follow the original equipment manufacturers' recommendations for proper location.
Wiring
All wiring must conform to local and national electrical codes and ordinances.
Follow the original equipment manufacturer's recommendations for proper wiring.
SETTING THE DIAL
Adjust temperature setting by inserting a screwdriver into
open slot and turning pointer to desired temperature on
dial.
The dial setting on the fan control is the temperature at
which the contacts close. The dial setting on the limit
control is the temperature at which the contacts open.
Adjustment Slot
160
150
140
130
120
110F
FAN ON TEMP.
757-1
100
Adjustment Slot
70
80
90
110
120
130
140F
150
758-1
200
190
180
170
160
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