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Operation
Final Check Out
1. Check the gas pressure at the burner manifold. It should be the same pressure that is indicated
2. Adjust the gas pressure at the automatic gas valve/regulator by removing the dust cap on the
3. Using a gas analyzer, check the emissions in the exhaust gas. Acceptable values are:
NOTICE:
Over-Firing Burners!
If fuel and air adjustment linkages were adjusted in the start-up process, insure that the burner
is not allowed to over fire. Be sure that the gas pressure on the manifold does not exceed the
gas pressure stated on the Powerflame burner name plate. Over firing operation could result in
equipment and property damage.
Normal Startup
Hazardous Gases and Flammable Vapors!
Exposure to hazardous gases from fuel substances have been shown to cause cancer, birth
defects or other reproductive harm. Improper installation, adjustment, alteration, service or use
of this product could cause flammable mixtures. To avoid hazardous gases and flammable
vapors follow proper installation and set up of this product and all warnings as provided in this
manual. Failure to follow all instructions could result in death or serious injury.
The gas heat module/section goes through the following routine every time it is started. The air
handler fan must be running, and the Power light on the flame-relay module should be illuminated.
1. A contact closure command (the signal to start) comes from a thermostat or building
2. The combustion air blower starts and runs for approximately 90 seconds. This 90-second run
3. 3:1 and 10:1 turndown, 200-2000 Mbh: The pilot light ignites, and the pilot light on the
4. 3:1 and 10:1 turndown, 200-2000 Mbh: The main burner ignites, the modulating gas-valve
5. 20:1 turndown, 1250 thru 2400 Mbh: The main burner lights and the main burner light on
30
on the Manifold Pressure at Max. Input nameplate at full fire. Refer to the Power Flame burner
nameplate for this value.
main gas valve/regulator and turning the adjusting screw. Turn the adjusting screw clockwise
to increase the gas pressure; turn the adjusting screw counter-clockwise to decrease the gas
pressure. If the pressure cannot be maintained at full fire at the setting shown on the nameplate
and the regulator is adjusted fully open, contact your local gas utility.
a. Carbon monoxide (CO)—400 ppm or less corrected to 12 percent carbon dioxide.
b. Efficiency—75 percent or higher
c. Oxygen—8 to12 percent
d. Carbon dioxide - 8.2 to 9.4 percent
WARNING
automation system.
is a pre-purge cycle to clear the heat exchanger of combustible gases before ignition.
flame-relay module should illuminate. (The pilot flame can be viewed through the small sight
glass on the burner.) The pilot flame will burn for 10 seconds, then the flame light on the flame-
relay module should illuminate.
actuator starts to open, and the main light on the flame-relay module should illuminate. Note
that it could take as long as 30 seconds for the actuator to fully open.
the flame-relay should illuminate. The modulating gas-valve actuator starts to open, and the
main light on the flame-relay module should illuminate. Note that it could take as long as 30
seconds for the actuator to fully open.
CLCH-SVX08A-EN
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