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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.
PART NO. 37-5784A
9715
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.
DESCRIPTION
WHITE-RODGERS
755-50
Electric Water Heater Control
INSTALLATION INSTRUCTIONS
This control is a dual-function control having a tempera-
ture control in series with a high-limit control.
The temperature control is a normally closed SPST switch
which opens on a rise in temperature and will control one
heating element.
Operator: Save these instructions for future use!
PRECAUTIONS
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 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.
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.
CAUTION
!
The limit control is a normally closed DPST switch which
opens on a rise in temperature to limit the maximum
allowable temperature. It has manual reset.
Both switches are calibrated to meet the requirements for
typical residential type storage tank water heaters.
WARNING
!
SPECIFICATIONS
AC ELECTRICAL RATINGS
UL and CSA recognized for resistive loads.
Temperature Ratings:
Temperature control - Variable 90° to 150°F (32° to
66°C)
Limit control - Fixed 170°F (77°C) with manual reset
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
Temp Control Voltage Limit Control
30 Amps 120-250 VAC 40 Amps
25 Amps 277 VAC 40 Amps
12.5 Amps 480 VAC 25 Amps