Installation Operating Instructions
62
FIG. 49
LOW FIRE ADJUSTMENT - V4062 ACTUATOR
(3) Remove the lead to V9055A terminal R.
Jumper terminal R to W. This will prevent the
actuator from going to the high re position.
(4) Energize the system and light the main burner.
(5) Use a Phillips screwdriver, or standard type with
a blade no more than 3/16 inch wide, to turn
the low re adjusting screw for the desired low
re position. DO NOT PUSH INWARD ON
SCREW.
(6) Shut down the burner, and then restart. Repeat
several times to be sure the low re setting is
that desired and suitable for correct burner light
off.
(7) Turn off power supply. Remove R-W jumper,
and reconnect the lead to terminal R on the
V9055A.
(8) Replace the wiring compartment cover.
FIG. 50
LOW FIRE ADJUSTMENT - V9055A ACTUATOR
12. MAIN BURNER FLAMES should have a clearly
dened inner cone, see Fig. 55 with no yellow tipping.
Orange-yellow streak caused by dust should not be
confused with true yellow tipping.
13. CHECK PILOT FLAME. Flame should be a blue
medium hard ame enveloping approximately 3/8” of
the end of the thermocouple, ame sensor, or sensing
probe, see Fig. 56 thru 59.
SECTION IV - OPERATION (continued)