Columbia MCB-100J, Инструкция по установке, эксплуатации и обслуживанию

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• Adjust gas input to boiler by removing protective cap on
pressure regulator
,
and turning screw clockwise to
increase input and counterclockwise to decrease
input.
• Manifold pressures are taken at outlet side of gas
valve.
• To check for proper fl ow of natural gas to boiler, divide
input rate shown on rating plate by heating value of
gas obtained from local gas company. This determines
number of cubic feet of gas required per hour.
• With all other gas appliances off, determine fl ow of gas
through meter for two minutes and multiply by 30 to
get hourly rate.
• Make minor adjustments to gas input as described
above. See Figure 16 page 18.
• Change burner ori fi ces if fi nal manifold pressure
varies more than plus or minus 0.3 inches water
column from speci fi ed pressure listed on boiler
rating plate.
• Primary air adjustment is not necessary, therefore
air shutters are not furnished as standard
equipment.
CHECK SAFETY CONTROL CIRCUIT . Test ignition
system safety shutoff device after placing boiler in
operation. Figure 15 page 19.
1.
Intermittent Pilot: With main burner operating, turn
pilot gas adjusting screw clockwise until pilot
gas is turned off. Within 90 seconds main gas control
closes, shutting off gas to main burner.
2.
High Limit Control : Remove plastic cover and
note temperature setting. Refer to appendix A for
adjustment procedure. Decrease setting to minimum
and operate boiler. When boiler water temperature
exceeds control temperature setting, control will open
circuit, closing automatic main gas valve. Figure 21.
14 - CHECKING GAS INPUT RATE TO BOILER
Figure 21 - High Limit Control Location
GAS VALVE
BURNER ACCESS
DOOR
HIGH LIMIT
AND OPERATING
CONTROL