White Rodgers 37-1119B Controls with Adjustable Differential, Controls with a Fixed Differential

SETTING THE CONTROL (CONT.)

CONTROLS WITH ADJUSTABLE DIFFERENTIAL

The movable indicator points to the temperature at which the contacts open. The fixed indicator points to the temperature at which the contacts close. The difference between these two indicators is the differential.

“B” Fixed indicator (cut-in point)

“C” Differential adjusting screw

“D” Movable indicator (cut-out point)

“A” Adjusting slot

To set the control:

1.Use a screwdriver in the adjusting slot (A) on the front of the control to turn the dial so that the fixed indicator (B) points to the temperature at which the contacts will close.

2.Turn the differential adjusting screw (C) until the movable indicator (D) points to the temperature at which the contacts will open.

CONTROLS WITH A FIXED DIFFERENTIAL

The indicator (B) points to the temperature at which the contacts open.

“B” Fixed indicator

“A” Adjusting slot

To set the control:

Use a screwdriver in the adjusting slot (A) on the front of the control to rotate dial until the desired temperature at which the contacts will open is positioned directly under the indicator (B).

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