Camus Hydronics MICOFLAME 2 Series, Installation, Operation And Service Manual

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5
Burner staging is arranged to allow a minimum firing rate of no less than 50% in order to
minimize possibility of condensation in the venting. Staging of burners for models 1200 through
2000 is as follows:
Two
Stage
Left Burner Right Burner
Stage 1 Off Full-Fire
Stage 2 Full Fire Full-Fire
Three
Stage *
Left Burner Right Burner
Stage 1 Off Lo-Fire
Stage 2 Off Hi-Fire
Stage 3 Full-Fire Hi-Fire
* Recommended for Models 1400 and 1600
Four
Stage
Left Burner Right Burner
Stage 1 Off Lo-Fire
Stage 2 Off Hi Fire
Stage 3 Lo-Fire Hi-Fire
Stage 4 Hi-Fire Hi-Fire
6. GAS SUPPLY AND PIPING
This boiler is intended to operate at inlet gas pressures not exceeding ½ PSI (14“ W.C.). If
higher pressures are present, consult the gas company for correction.
When pressure testing the gas supply piping at pressures above ½ PSI, the boiler and its
individual gas shut-off valve must be disconnected from the supply piping.
Provide a trap (drip leg) as close to the heater as possible.
Install a good joint union and manual shut-off valve in the gas line near the heater to allow easy
removal of the gas control assembly.
Provide gas pressures at inlet to boiler manifold as follows:
PROPANE NATURAL GAS
Minimum (inches W.C.) 11 4
Maximum (inches W.C.) 11 7
The gas supply line must be of adequate size to prevent undue pressure drop and must never
be smaller than the size of the connection on the heater. Sizing based on Table 2 is
recommended.