White Rodgers 5A75 installation instructions Installation Cont, Wiring, Setting The Control

INSTALLATION (CONT.)

The elements should be bent so that they will not touch the heated surface or be affected by reflected or radiated heat

unless such a position is determined by the furnace manu- facturer.

Care must be used when bending the element to prevent “kinking” it. The element should not be bent with a radius of less than one inch and all bending should be done between the coiled part of the element and a point one inch from the diaphragm cup. The element should be shaped over the thumbs so that a round bend is obtained.

On remote controls, the long capillary tubing between the sensitive bulb and the switch mechanism should be led over a path that will protect it from cuts, blows, wear due to vibration, etc.

Use the paper template packed with the control to obtain the mounting dimensions.

ELEMENT

AFFECTED BY AIR GOING

TO ONLY ONE DUCT

AIR FLOW OVER ELEMENT AFFECTED BU HUMIDIFIER

HUMIDIFIER

NORMALLY GOOD ELEMENT LOCATION

ELEMENT MAY BE

TOO CLOSE TO

SOURCE OF HEAT

UNLESS SUCH

POSITION IS

DETERMINED BY

FURNACE

MANUFACTURER

WIRING

All wiring should be done in accordance with local and national electrical codes and ordinances.

					REMOTE MANUAL SWITCH
If the furnace or burner manufacturer recommends a wiring				FOR SUMMER FAN OPERATION
diagram, then follow such recommendations. If none are of-		LIMIT FAN				(IF USED)
fered, connect the fan side (right hand switch) as shown in the	TYPE
diagram on this page.
	5A75
Connect the limit side (left hand switch) according to wiring
diagrams packed with the primary control, gas valve, oil burner							HOT
control or stoker control.
							LINE
							N
	FAN
SETTING THE CONTROL	MOTOR
LIMIT SWITCH WITH A FIXED DIFFERENTIAL
			CAUTION
The indicator (B) points to the temperature at which the contacts
	The limit control is a safety device. The manufacturer of
open.
	the furnace as well as testing agencies (U.L., AGA, CGA)
To set the control:
	have made many tests on the furnace to determine the
Use a screwdriver in the adjusting slot (A) on the front of the	proper dial setting.
control to rotate dial until the desired temperature at which	The limit dial should never be set any higher than the
the contacts will open is positioned directly under the
	setting it had when the furnace was delivered. Do not
indicator (B).
	force the dial past any stop on the dial even though the
	dial may be graduated beyond the stop.

“F” STOP TAB	“B” FIXED
	INDICATOR

“A” ADJUSTING

1.	Loosen stop screw (E) with enclosed wrench.
2.	Set dial to original equipment manufacturer’s specification.

“E” STOP SCREW

SLOT

3.	Without moving the dial, move stop tab (F) against indicator.
4.	Retighten stop screw (E).

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