Dunkirk DKVLT-050 Installation, Operation & Maintenance Manual page 39

Gas
Min.
Natural Gas 9.0
Propane 10.0
NOTICE
Contact Technical Support for additional
information or assistance.
Natural Gas only**
1. Measure input. Compare to table above. Continue
to measure input and CO
values are within range specified in tables
Propane Gas
Most propane systems do not have flow meters.
1.
Check CO . Propane should be between 10% and
2
11.0%.
• If CO is low increase gas flow following figure
2
9-3 & 9-4.
• If CO is high decrease gas flow following figure 9-3
2
& 9-4.
FIGURE 9-3 Gas Valve - Models
050/075/100/150/200 MBH
• To increase gas flow turn 'throttle' left or counter
clockwise .
• To decrease gas flow turn 'throttle' right or
clockwise .
• Limit adjustment to one turn and retest.
9 - START UP PROCEDURE
CO
2
CO
Max.
9.5 <100ppm
11.0 <150ppm
until both measured
2
.
FIGURE 9-4 Gas Valve - Model 299 MBH
• To increase gas flow turn 'throttle' left or counter
clockwise
• To decrease gas flow turn 'throttle' right or
clockwise
• Limit adjustment to one turn and retest.
Verify Burner, Proper Operation
1. Inspect burner flame through Sight Glass. See
figure 11-1 & 11-2.
2.
Operate boiler through several heating cycles,
including domestic hot water, if used. Verify proper
operation.
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