Model 601GAS burner — Instruction manual
MN601GAS 012516
– 21 –
Where appliance instructions differ from this manual, follow the appliance instructions.
Installer/servicer
Please check off and fill in certificate
❏
After completing start-up and testing or service, fill out the certificate
on page 30.
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
circulating blowers or other equipment. Determine proper
response before attempting start-up. If appliance fails igni-
tion on several attempts, close gas valve and use burner
blower to purge appliance before restart.
5. Perform checkout procedures • fill out certificate
Make final burner adjustments
(continued)
Inspect flame
❏
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
pressure changes later, inspect the flame again.)
Check the firing rate
❏
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 15.1 seconds for one cubic foot
of gas: INPUT example = (3600 x 1050) ÷ (15.1) = 250,500 Btuh.
Firing rate should be within ± 5% of rated input for the appliance.
Adjust the gas 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.
❏
For propane gas, contact your propane supply for procedure to verify
firing rate.
Preparation before checkout
❏
Burner/appliance installed per appliance instruction manual?
❏
Burner components/settings verified against Table 1a, page 9?
❏
Burner/appliance installed per all applicable codes?
❏
Installation site has adequate ventilation openings and vent system?
❏
Gas supply line in good condition and sized correctly?
❏
All gas line joints sealed with pipe dope listed for use with liquefied
petroleum gases?
❏
Gas supply pressure to gas valves checked?
❏
Regulator installed if pressure can exceed 14 inches w.c.?
❏
Air purged from gas line?
❏
Gas piping checked for leaks?
❏
Wiring installed per burner manual and appliance instructions?
❏
Burner inspected and primary control flame failure lockout checked?
❏
Start-up sequence performed (page 16)?
Make final burner adjustments
Check for leaks in gas piping
❏
Smell around burner to make sure there is no gas leak in near-burner
piping. Verify integrity of gas line joints between gas valves and burner
gas inlet connection using soap suds mixture.
Check/adjust gas valve outlet pressure
❏
With burner running, check manometer reading for gas valve outlet
pressure. Adjust regulator if necessary so the reading is 3.5 inches
w.c. for either natural gas or propane gas.
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.
❏
Insert a test probe into appliance vent outlet to sample flue products.
The results should show CO
2
or O
2
as follows:
Fuel
CO
2
O
2
Minimum Maximum Maximum Minimum
Natural Gas
8.5%
10.0%
6.2%
3.5%
Propane Gas
9.5%
11.2%
6.0%
3.5%
❏
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
damper 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.
❏
Check overfire pressure in the appliance. Refer to the appliance
manual for recommended reading and barometric damper instructions
for proper setting of damper, when used.