White Rodgers 3046-5 Mercury Flame Sensors 安装指导

2

Uncoil the capillary carefully, making certain that it is not
bent sharply at any place. Be particularly careful with that
part of the capillary connected to the diaphragm.

The thermal element of the automatic pilot may be at-
tached to the pilot burner either before of after the pilot
burner is mounted to the main burner. To attach the
thermal element to the pilot burner: remove nut and
lockwasher, slip thermal element into bracket of pilot
burner so that screw on element extends through the hole
in bracket. Then fasten with nut and lockwasher.

The orifice fitting should then be screwed into the pilot
burner and the tubing connected to the orifice fitting.

The proper location of an automatic pilot, with respect to
the main burner, should be determined by the manufac-
turer of the burner according to the requirements of the
American Gas Association and the local gas utility.

1.

The operating temperatures, as taken by thermo-
couples attached to the surface of the automatic pilot
and pilot burner at the points shown below, must not
exceed the following:

5

4

2

1

3

1. Tip of pilot burner, 1200

°

 F.

2. Tip of thermal element, 1400

°

 F.

3. Orifice fitting, 475

°

 F.

4. Capilllary 500

°

 F.

5. Terminal screw on pilot, 175

°

 F.

Horizontal

Vertical

Bleed Burners are available
for vertical or horizontal pilots.

2.

The automatic pilot must be mounted near enough to
the main gas burner so it is easily ignited by the pilot
ignition flame even when the pilot flame is reduced to
the point where it is just sufficient to keep the pilot
switch contacts closed.

3.

Proper functioning of the automatic pilot requires that
the flame from the main gas burner not touch any part
of the automatic pilot.

4.

The pilot burner must be positioned so as to receive
incoming secondary air and not the products of com-
bustion.

5.

Unless protected from strong drafts of secondary air,
which tend to carry the flame away from the bulb, the
automatic pilot may not be supplied with sufficient
heat for proper operation.

6.

It is recommended that on installations burning manu-
factured gas, an approved filter of sufficient capacity
be connected into the pilot gas line to prevent forma-
tion of gum at the orifice.

7.

Bleed tubes are available for attaching to the bracket
of the pilot burner. This tube is for burning the bleed
gas from the diaphragm gas valve and from the
pressure regulator and should be connected accord-
ingly.

These typical wiring diagrams show only the terminal
identification and wiring hook up. Always refer to wiring
instructions provided by equipment manufacturer for sys-
tem hookup operation.