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Start-Up Procedures
Venting system must be sealed gas-tight
to prevent flue gas spillage and potential
carbon monoxide emissions, which will
result in severe personal injury or death.
Check Gas Piping
1. Check around the unit for gas odor fol-
lowing the procedure outlined in this
manual on Page 49.
If any gas leaks are found or suspected,
shut the unit down immediately. Use a
gas detection device or bubble test to
locate the source of the gas leak and
repair at once. Do not operate the unit
until the leak is corrected. Failure to
comply with this procedure could result
in severe personal injury, death or sub-
stantial property damage.
Verify Flame Pattern and Combustion
Check the flame pattern through the
inspection port of the burner. The
flame should be blue and stable. The
flame should be the length of the burn-
er head openings.
Remove the test plug located on the flue
hood and insert a combustion test probe.
Test for CO2 or O2 and for CO. The
combustion reading should be within
the range listed in Table 5. The CO
level should not exceed 100 ppm when
combustion is correct.
To adjust the combustion level open or
close the air shutter by a 1/2 setting.
- Closing the air shutter will decrease
the O2 level and increase the CO2
level.
- Opening the air shutter will increase
the O2 level and decrease the CO2
level.
A combustion test must be performed
after any adjustments are made. Allow
the unit to operate for approximately 10
minutes after adjustment before measur-
ing any combustion levels. Failure to
comply with these pro c e d u r es could
result in severe personal injury, death or
substantial property damage.
Replace the test port plug when the com-
bustion test is completed to prevent flue
gas spillage into the building. Failure to
comply with this procedure could result
in severe personal injury, death or sub-
stantial property damage.
Measure Input - Natural Gas Only
1. Operate the unit for approximately 10
minutes.
2. Turn off all gas appliances within the
building.
3. At the gas meter, record the time
required to use one cubic foot of gas.
4. Calculate gas input using the following
equation:
3600 x 1000 / number of second record-
ed for one cubic of gas = BTU/H.
5. The BTU/H calculated should approxi-
mate the input rating listed on the unit.
WARNING
WARNING
WARNING
WARNING
Natural Gas Propane
O2 Min. 3.00% 3.00%
O2 Max. 5.00% 5.00%
CO2 Min 9.00% 10.50%
CO2 Max 10.00% 12.00%
Table 5: Recommended Combustion Levels