CleaverBrooks ProFire Q Series, Installation Operation & Maintenance

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750-437
Q Series Full Modulation
3-9
Operation
5. RESET MANUAL VALVE OPEN/CLOSE POSITIONS BEFORE RESUMING NORMAL OPERATION.
Confirm:
•Manual-leak test valves [8A] and [8B] are closed.
•All safety shutoff valves are operating normally.
•Confirm manual cocks [1] and [7] are open.
3.5 — Combustion Emissions and Efficiency
The Q burner should be tuned so combustion results match the respective firing rate range in Table 3- 4:
3.5.1 — Carbon Monoxide
Carbon Monoxide Parts per Million (PPM) values should be kept to a minimum; it is reasonable to expect
attainable levels below 50 PPM. Certain heat exchanger characteristics such as furnace dimensions, vessel
construction, etc., can make low CO difficult to achieve; consequently, continued attention to levels is advised.
Most codes limit permissible CO amounts to below 400 PPM.
3.5.2 — Efficiency and Stack Temperature
A high net stack temperature indicates wasted heat. Net stack temperature is obtained by subtracting the
ambient air temperature from the flue gas temperature. Stack temperature should be as low as possible without
causing flue gas condensation.
TABLE 3- 4.
Emissions Guidelines
Firing
Rate
O
2
Excess Air
CO
2
Natural Gas
CO
2
Propane
HIGH
FIRE
3.0 15.0 10.0 11.7
3.5 18.0 9.6 11.5
4.0 21.0 9.4 11.2
MID
FIRE
4.5 24.5 9.1 10.8
5.0 28.1 8.8 10.4
5.5 31.9 8.5 10.0
LOW
FIRE
6.0 35.9 8.3 9.8
6.5 40.3 8.0 9.5
7.0 44.9 7.7 9.2
8.0 55.6 7.5 8.5
Carbon Monoxide is a colorless, odorless toxic gas resulting from incomplete combustion of gas. It can kill
quickly with no warning.
Know the signs:
headaches, nausea, dizziness, breathlessness, collapse, loss of consciousness.
! Warning