Columbia CDVB-100, Инструкция по установке, эксплуатации и обслуживанию, Страница: 36 / 44

36
The main burner flame should form a
sharp blue inner mantel with no yellow.
13.
Adjusting the pilot flame:
A. Remove the pilot adjustment cover screw.
B. Turn inner screw (adjustment screw) clockwise
to decrease and counterclockwise to increase
the pilot flame. See figure 34 .
C. After adjustment, be sure to replace cover screw to
prevent possible gas leakage.
D. The main burners and the pilot burner should be
checked for signs of corrosion or scale build up.
E. Clean main burners and pilot burner with a steel
bristle brush.
CHECK GAS INPUT RATE TO BOILER
1.
Maximum permissible gas supply pressure must not
be higher and minimum supply pressure must not be
lower than what is specified on the rating plate.
2.
To check for proper flow of natural gas to boiler using
the gas meter, proceed as follows:
A. Turn off the gas supply to all other appliances,
except the boiler.
B. With the boiler operating, determine the flow of gas
through the meter for two minutes and multiply by
30 to get the hourly rate (in cubic feet).
C. Divide the input rate shown on the rating plate by
the heating value of the gas as obtained from the
local gas company. This will determine the number
of cubic feet of gas required per hour.
D. If minor adjustment is necessary, adjust the
pressure regulator on the combination gas control.
Increase or decrease manifold pressure to obtain
gas input required as described on the rating plate.
To increase, turn the regulator adjusting screw
clockwise
or counterclockwise to decrease
pressure, see figure 38 . The manifold pressures
are taken at the outlet side of the gas valve.
E. Relight all the other appliances turned off in step
"a." above. Be sure all pilot burners are operating.
GENERAL INSTRUCTION FOR SEASONAL STARTUP & MAINTENANCE
Figure 32 - Main Burner Flame
Figure 33 - Pilot Flame
Figure 34 - Gas VaLve