AdvantagePlus Fault Tree Troubleshooting
1706.doc
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b.
What size is the pipe between the appliance regulator and the AdvantagePlus ¾ inch x ½ inch
factory installed reducing coupling?
c.
Most of the time these regulators are installed too close to the unit. They must be upstream 10',
and minimum 3/4" ID black steel pipe run all the way to the 3/4" x 1/2" factory installed reducing
coupling. No flex connectors allowed, except a Dormont 3/4" ID commercial grade connector.
d.
What is the BTU capacity of the in-line appliance regulator?
4.
The gas supply regulator must be of sufficient size to accommodate all gas products it will service. If you
have two 100,000 BTU heaters, then the regulator must be capable of supplying a minimum of 200,000 BTUs of
fuel.
5.
Is the in-line regulator vented to the atmosphere?
a.
If not, is the regulator equipped with a "vent limiter"?
b.
In our experience some regulators are prone to field problems with inconsistent regulator
performance. They have vent-limiting devices, and do not respond well.
6.
Verify the gas orifice is installed, and it is the correct orifice for the gas in use.
7.
Is there a fabricated drip leg to keep debris out of the gas valve?
Adjust the AdvantagePlus using a CO meter. CO above 10 parts per million will cause premature igniter failure,
premature burner failure, and huffing and puffing sounds.
Many installations on natural gas are victims of insufficient gas volume due to inadequate gas available on the
job. Meter sizing, and building distribution piping, more often than not, is the culprit. In addition, CSST
(Corrugated Stainless Steel Tubing) is a major problem! This material may be used only on 2-pound systems to
supply high-pressure gas to the appliance regulator, assuming it is properly sized for the job. The low-pressure
gas from the regulator to the AdvantagePlus must be 10 feet of 3/4" ID black steel pipe.
Igniter; Power to igniter
Explanation: Monitors igniter element output. The
LED is ON when 120VAC power is applied to the
igniter.
At a minimum, check the following:
1.
Igniter current draw is too low.
2.
Molex is connected.
Does the igniter have
voltage?
Yes
No
Replace control board
Measure for 120 VAC at CN5.
