White Rodgers 758-1 Installation Instruction
To prevent electrical shock and/or equipment
damage, disconnect electric power to system at
main fuse or circuit breaker box until installation
is complete.
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.
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.
appliance manufacturers’ recommended instal-
lation/service instructions to insure proper op-
eration.
PART NO. 37-5788A
9721
Printed in U.S.A.
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
WHITE-RODGERS
757-1 Fan Control
758-1 Limit Control
INSTALLATION INSTRUCTIONS
The Fan control is a normally open SPST switch which
closes on a rise in temperature and has an adjustable
temperature setting.
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 tempera-
ture setting.
opens on a rise in temperature to limit the maximum
allowable temperature and has an adjustable tempera-
ture setting.
Operator: Save these instructions for future use!
PRECAUTIONS
THIS CONTROL MUST BE INSTALLED BY A QUALI-
FIED INSTALLER.
FIED INSTALLER.
All wiring must conform to local and national electrical
codes and ordinances.
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.
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 re-calibrate this control will void the White-
Rodgers warranty.
Any attempt to re-calibrate this control will void the White-
Rodgers warranty.
Do not use on circuits exceeding specified volt-
ages. Higher voltages will damage control and
could cause shock or fire hazard.
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.
low or line voltage, have it inspected by a quali-
fied heating and air conditioning contractor or a
licensed electrician.
CAUTION
!
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.
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.
WARNING
!
SPECIFICATIONS
AC ELECTRICAL RATINGS:
8 Amps at 120 VAC or 4 Amps at 240 VAC
Pilot Duty: 125 VA
Pilot Duty: 125 VA
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)
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398