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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.
These explosion resisting thermostats are designed for control-
ling heating installations having hazardous atmospheres, such
as oil refinery, coal mine, flour mill, etc. They are designed for
line voltage operation, but may also be used as low voltage pilot
controls. White-Rodgers explosion resisting controls are avail-
able with either self-contained or remote sensitive bulbs.
The self-contained type is especially recommended for heating
installations of large air space.
The remote element type is applicable to installations such as
ducts, ovens or liquid baths.
THESE CONTROLS MUST BE INSTALLED BY A QUALIFIED
INSTALLER.
Do not exceed the specification ratings.
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 calibrate this control will void the White-Rodgers
warranty.
Switch Action: S.P.S.T. – Open on Rise
Dimensions of Enclosure: 6-1/8" high
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS RD., ST. LOUIS, MO. 63123
(314) 577-1300, FAX (314) 577-1517
9999 HWY. 48, MARKHAM, ONT. L3P 3J3
(905) 475-4653, FAX (905) 475-4625
5-1/4" wide over lugs
4-5/8" deep over adjusting knob
EXPLOSION RESISTING CONTROLS
Heating Service
INSTALLATION INSTRUCTIONS
To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could cause
shock or fire hazard.
Enclosure: Designed for Class I, Group D; Class II, Groups
E, F and G locations.
Electrical Opening: 1/2" pipe thread in bottom of enclosure.
Printed in U.S.A.
DESCRIPTION
PRECAUTIONS
CAUTION
WARNING
SPECIFICATIONS
PART NO. 37-1119B
Replaces 37-1119 & 37-9160
9551
Publicité
Manuels Connexes pour White-Rodgers 2A20-2
Sommaire des Matières pour White-Rodgers 2A20-2
- Page 1 Do not use on circuits exceeding specified voltage. This control has been accurately calibrated at the factory. Any Higher voltage will damage control and could cause attempt to calibrate this control will void the White-Rodgers shock or fire hazard. warranty.
- Page 2 INSTALLATION OF REMOTE BULB TYPES After a suitable location has been chosen for the control, remove the front cover by using a 3/16" Allen head wrench in the 6 cover screws. Fasten control to mounting surface. Use 1/2" pipe for connection to electrical outlet. The switch mechanism of remote bulb types may be mounted at any convenient point away from the controlled area within the length of the capillary.
- Page 3 SETTING THE CONTROL (CONT.) CONTROLS WITH ADJUSTABLE DIFFERENTIAL CONTROLS WITH A FIXED DIFFERENTIAL The movable indicator points to the temperature at which the The indicator (B) points to the temperature at which the contacts contacts open. The fixed indicator points to the temperature at open.
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Page 4: Spécifications
La commande a été calibrée avec précision lors de la des risques de chocs électriques et d’incendie. fabrication. Toute tentative de calibrer l’appareil annulera la garantie de White-Rodgers. SPÉCIFICATIONS Commutation : Unipolaire unidirectionnelle (SPST) Boîtier : Conçu pour emplacements de Classe I, à... -
Page 5: Installation Des Modèles Avec Capteur À Distance
INSTALLATION DES MODÈLES AVEC CAPTEUR À DISTANCE Après avoir choisi un emplacement adéquat pour la commande, détacher le couvercle en dévissant les 6 vis à l’aide d’une clé hexagonale de 3/16". Fixer la commande à la surface choisie. Raccorder la commande au circuit électrique à l’aide d’un conduit de 1/2". -
Page 6: Réglage De La Commande (Suite)
RÉGLAGE DE LA COMMANDE (suite) COMMANDES À DIFFÉRENTIEL RÉGLABLE COMMANDES À DIFFÉRENTIEL FIXE L’indicateur mobile donne la température à laquelle les L’indicateur (B) donne la température à laquelle les contacts seront ouverts. L’indicateur fixe donne la tempé- contacts seront ouverts. rature à...