19
CHECKING AND ADJUSTING
Figure 14 - Igniter
Adjust Pilot Burner
Pilot flame should surround 3/8” to 1/2” of pilot sensor. See
Figure 15.
To adjust Flame.
1.
Remove screw cover over pilot adjusting screw. See
Figure 13.
2.
Insert small screwdriver and adjust flame as needed.
Turn screw counterclockwise to increase flame, clock-
wise to decrease.
3.
Replace screw cover over pilot adjusting screw.
Main Burners
• Main burners do not require primary air adjustment and
are not equipped with primary air shutters.
• Main burner flames form sharp blue inner cones in
softer blue outer mantel, with no yellow. Remain still
when observing main burner flames.
• Check main burner orifices, burner throat and flame
ports for dust and lint obstruction if flame appearance
is not correct.
• Remove rollout shield if necessary to observe main
burner flames.
• Replace rollout shield after observation.
Gas Valve Safety Shutdown Test
1.
Test ignition system safety shutoff device after placing
boiler in operation.
2.
Boilers equipped with intermittent ignition, with
main burners firing, disconnect ignition cable from
intermittent pilot control box. Gas valve will shut off
main burners.
3.
TURN OFF ELECTRIC POWER to boiler before
reconnecting ignition cable, to prevent electric shock.
Figure 15 - Main Burner
Summary of Contents for Dunkirk Plymouth Steam PSB-3D
Page 9: ...9 Figure 4 Recommended Near Boiler Piping Using One Supply Tapping SYSTEM PIPING ...
Page 27: ...27 REPAIR PARTS ...
Page 28: ...28 REPAIR PARTS ...
Page 29: ...29 REPAIR PARTS ...
Page 30: ...30 REPAIR PARTS Safety Relief Valve 14 11 NPT X 4 Nipple PF 033 02 ...
Page 31: ...31 Date Service Performed Company Name Tech Initials Company Address Phone ...
Page 32: ...DUNKIRK BOILERS 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com ...
