MN801GAS 060520
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Step 3a
Verify operation
Perform all of the checkout procedures given in Step 6 of the
burner manual. In addition, verify operation of the gas pressure
switches as described below.
Verify high gas pressure switch operation
❏
Cycle the burner off with the appliance controls and turn off power to the
appliance/burner.
❏
Attach a manometer to the manifold-side manual gas valve test port.
❏
Turn on power and cycle the burner on with the appliance controls.
❏
Measure the manifold gas pressure with the manometer.
❏
Set the high gas pressure switch to a pressure less than actual manifold
pressure. The high gas pressure switch should shut the burner down.
Replace the switch if necessary.
❏
Turn off power to the appliance/burner; remove the manometer and replace
the plug in the gas valve test port. Reset switch.
Verify low gas pressure switch operation
❏
Cycle the burner off with the appliance controls and turn off power to the
appliance/burner.
❏
Close the main manual gas valve.
❏
Cycle the burner on.
❏
The low gas pressure switch should shut the burner down. Replace the
switch if necessary.
❏
Turn off power to the appliance/burner.
❏
Open the main manual gas valve.
❏
Reset low gas pressure switch.
7. Adjust the burner using test instruments
(continued)
Step 4
Verify operation
Burner/appliance/controls operation
❏
Test operating and limit controls on appliance as specified in appliance
instructions.
❏
Check operation of the primary control by forcing lockout to occur. For
primary controls that enter latch-up after multiple lockouts, force latch-up
to occur as well. Reset primary control per control data sheet instructions
after each test.
❏
Start and stop the burner several times, allowing the primary control to
sequence through normal operation. Verify correct operation of burner
and primary control throughout.
❏
Confirm and/or adjust overfire combustion pressure. Refer to boiler/
furnace manufacturer’s recommendations.
Verify vent system operation
❏
Verify vent is operating correctly and flue products are properly exhausted
from building. If the building contains any exhaust fans or conditions that
could affect vent performance, check burner/appliance/vent operation
with exhaust fans (or other conditions) operating.
Combustion/ventilation air
❏
Verify combustion/ventilation air openings are not, and will not be ob-
structed.
❏
Verify air opening louvers are fully open.
❏
If louvers are motor-operated, verify motor and end switch are interlocked
with appliance/burner wiring to prevent operation of the burner if the air
louvers are not fully opened.
Prepare burner for normal operation
❏
Cycle burner off with appliance controls.
❏
Turn off power to the appliance.
❏
Seal the appliance flue test opening.
❏
Verify all components and wires are in place and burner is ready for
operation.
❏
Restore power to the appliance.
Train the user
❏
Train the user to operate the burner and appliance under normal condi-
tions.
❏
Explain the procedure to shut down the burner/appliance when required.
❏
Review the back cover of this manual (and the appliance manual) with
the user.
❏
Verify the user is aware of all procedures specified in the manuals.
❏
Verify that the user will not store or use combustible liquids or materials
or contaminants in the vicinity of the burner/appliance.
