Model EZGas Pro gas burner — Instruction manual
MNEZGas 011917
– 16 –
Where appliance instructions differ from this manual, follow the appliance instructions.
4. Check system • start-up burner/appliance
(continued)
Installer/servicer
Please check off and fill in certificate
Should overheating or an emergency occur, immediately:
• Shut off main manual gas valve.
• Shut off control switch to burner.
Under some circumstances power should remain on for water
pumps or circulating blowers. Determine proper response
before attempting start-up. If appliance fails ignition on several
attempts, close gas valve and use burner blower to purge
appliance before restart.
Check combustion using instruments
Do not attempt to confirm combustion simply by inspecting
the flame visually. You must use combustion test instruments.
Failure to properly verify/adjust combustion could allow
unsafe operation of the burner, resulting in severe personal
injury, death or substantial property damage.
Make final burner adjustments
(continued)
Inspect flame
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Look at flame through appliance observation port. The flame should be
a soft blue with well-defined orange and yellow tips for natural gas, or
well-defined yellow tips for propane gas. (If you make air or gas pres-
sure changes later, inspect the flame again). See instrument warning
below.
Check the firing rate
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Natural gas only — Turn off all other gas appliances connected to the
gas meter. Use a stopwatch to time the number of seconds for a flow
of one cubic foot of gas (two revolutions for a one half cubic foot per
revolution dial, for example). You will also need to know the gas heat
content in Btu per cubic foot. Determine the actual input from: INPUT
= (3600 x Btu per cubic foot) ÷ (number of seconds for one cubic foot),
for firing rate in Btuh. For example, for 1050 Btu per cubic foot natural
gas, with meter timed at 30.2 seconds for one cubic foot of gas: INPUT
example = (3600 x 1050) ÷ (30.2) = 125,200 Btuh. Firing rate should
be within ± 5% of rated input for the appliance. Adjust the combination
gas valve pressure regulator if necessary to obtain the correct firing
rate. Valve outlet pressure must not be lower than 3.2 inches w.c. nor
higher than 3.8 inches w.c.
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For propane gas, contact your propane supply for procedure to verify
firing rate.
Make final burner adjustments
Check for leaks in gas piping
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Smell around burner to make sure there is no gas leak in near-burner
piping. Verify integrity of gas line joints between combination gas valve
and burner gas inlet tapping using soap suds mixture.
Check/adjust gas valve outlet pressure
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With burner running, check manometer reading for combination gas
valve outlet pressure. Adjust valve regulator if necessary so the reading
is 3.5 inches w.c. for either natural gas or propane gas (an LP conver-
sion kit is not required when firing propane).
Preparation before checkout
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Burner/appliance installed per appliance instruction manual?
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Burner components verified against Table 1, page 7?
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Burner/appliance installed per all applicable codes?
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Installation site has adequate ventilation openings and vent system?
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Gas supply line in good condition and sized correctly?
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All gas line joints sealed with pipe dope listed for use with liquefied
petroleum gases?
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Gas supply pressure to combination gas valve checked?
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Regulator installed if pressure can exceed 14 inches w.c.?
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Air purged from gas line?
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Gas piping checked for leaks?
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Wiring installed per burner and appliance instruction manuals?
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Burner inspected and primary control flame failure lockout checked?
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Start-up sequence performed (page 11)?
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Insert test probe into vent above appliance to sample flue products.
The results should show CO
2
or O
2
as follows:
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If the combustion results are outside the range above, and the firing
rate of the burner is within 5% of rated input, open or close the air band
until the CO
2
(or O
2
) are acceptable.
After CO
2
(O
2
) tests are completed satisfactorily, measure
flue products for carbon monoxide (CO) concentration. The
CO must not exceed 50 ppm adjust to “air free”, or other if
specified by local codes.
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Check pressure overfire in appliance. Refer to appliance manual for
recommended reading and barometric damper instructions for proper
setting of damper.
