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. 37-5785A
9714
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
756-50
Electric Water Heater Control
INSTALLATION INSTRUCTIONS
This control is a dual-function control having a tempera-
ture regulating control in series with a high-limit control.
The temperature control is a SPDT switch which opens on
a rise in temperature and will control one or two heating
elements.
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
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
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
