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FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE 
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY 
AND/OR PROPERTY DAMAGE.

 

 

DESCRIPTION

755-50

Electric Water Heater Control

INSTALLATION INSTRUCTIONS

 

 

PRECAUTIONS

WARNING

!

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.

CAUTION

!

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.

 

 

SPECIFICATIONS

This control is a dual-function control having a temperature 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.

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 resi-
dential type storage tank water heaters.

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 White-Rodgers warranty.

AC ELECTRICAL RATINGS

UL and CSA recognized for resistive loads.

www.white-rodgers.com

www.emersonclimate.com

PART NO. 37-5784B

Replaces 37-5784A

1308

Temp Control

Voltage

Limit Control

30 Amps

120-250 VAC

40 Amps

25 Amps

277 VAC

40 Amps

12.5 Amps

480VAC

25 Amps

Wiring

All wiring must conform to local and national electrical codes 
and ordinances.

Connect in accordance with wiring diagrams provided by the equip-
ment manufacturer. If none are provided, the following represents 
a typical installation.

Temperature Ratings:

Temperature control - Variable 90° to 150°F (32° to 66°C)
Limit control - Fixed 170°F (77°C) with manual reset

Single Element Circuit for Full 
Power Disconnect Through 
Both Power Conductors

Heating Element

L1

L2

1

2

1

2

3

4

Factory Installed

Jumper

 

 

INSTALLATION 

Adjust temperature setting by inserting a screwdriver into open slot 
and turning pointer to desired temperature on dial.

Adjustment Slot

150F

66C

125F/52C

90F

32C

 

 

SETTING THE DIAL 

Содержание White Rodgers 755-50

Страница 1: ...e temperature It has manual reset Both switches are calibrated to meet the requirements for typical resi dential type storage tank water heaters 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 caus...

Страница 2: ...idirec tionnel normalement fermé qui s ouvre quand la température monte et qui commande un élément chauffant La commande de limite est un interrupteur bipolaire unidirectionnel nor malement fermé qui s ouvre quand la température monte pour limiter la température maximale permise Il est réarmé manuellement Les deux interrupteurs sont étalonnés pour répondre aux besoins des chauffe eau à ballon rési...

Страница 3: ...alo inspeccionar por un contratista de calefacción y aire acondicionado ESPECIFICACIONES Este control es de doble función con un control de temperatura en serie con un control de límite alto El control de temperatura es un interruptor unipolar de una posición normalmentecerrado queseabrecuandolatemperaturasubeycontrola un elemento de calefacción El control de límite es un interruptor bipolar de un...

Страница 4: ...presa de Emerson Electric Co The Emerson logo is a trademark and service mark of Emerson Electric Co Le logo d Emerson est une marque de commerce et une marque de service d Emerson Electric Co El logotipo de Emerson es una marca comercial y una marca de servicio de Emerson Electric Co www white rodgers com www emersonclimate com ...

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