White Rodgers 755-50 Installation Instructions Manual

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.
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.
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.
WARNING
!
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.
AC ELECTRICAL RATINGS
UL and CSA recognized for resistive loads.
Temp Control Voltage
30 Amps 120-250 VAC
25 Amps 277 VAC
12.5 Amps 480 VAC
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
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.
Temperature Ratings:
Limit Control
40 Amps
40 Amps
25 Amps
Printed in U.S.A.
755-50
Electric Water Heater Control

INSTALLATION INSTRUCTIONS

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 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.
Temperature control - Variable 90 to 150 F (32 to
Limit control - Fixed 170 F (77 C) with manual reset
DESCRIPTION
PRECAUTIONS

SPECIFICATIONS

66 C)
PART NO. 37-5784A
9715