Start-Up; Operation - Trane GMND-SVX01B-EN Installation, Operation And Maintenance Manual

Start-Up

Operation

Explanation of Controls
WARNING
Carbon Monoxide!
Never operate duct furnaces if the power venter is not
operable. Your venting system must not be blocked by
any snow, snow drifts, or any foreign matter. Inspect
your venting system to ensure adequate ventilation
exists at all times! Failure to follow these
recommendations could result in death or serious
injury due to Carbon Monoxide Poisoning (symptoms
include grogginess, lethargy, inappropriate tiredness, or
flu-like symptoms).
1. Each Separated Combustion Duct Furnace comes
equipped with a power vent system that consists of a
power venter motor and blower, pressure switch, and
sealed flue collector (Figure 20, p.
NOTICE:
Additional Devices!
The addition of external draft hoods or power venters is
not permitted. Addition of such devices could cause
severe unit malfunction or failure!
2. The power venter motor is energized by the room
thermostat when a demand for heat is sensed. The
pressure switch measures the pressure differential
between the air inlet and exhaust vent systems. If the
differential is correct, the indirect spark ignition system
is energized.
3. The indirect spark ignition system consists of an
ignition module, a dual combination valve, and a
spark-ignited pilot burner. When the pressure switch is
closed, the pilot valve opens as a spark is generated to
light the pilot. When the flame is sensed by the flame
sensing circuit, the spark ceases, and the main gas
valve is opened to supply gas to the main burners.
Once the thermostat has been satisfied, the vent
system and gas valve are simultaneously de-
energized, stopping all gas flow to the unit.
Shut-Down
1. Turn the valve selector knob to the OFF position.
2. Turn off the electricity.
3. To relight, follow the instructions in
p. 26 (preceding section).
26
4. The high limit switch interrupts the flow of electric
5. The optional fan switch delays the operation of the fan
6. The wall thermostat, supplied optionally, is a
Initial Lighting
32).
1. Open the manual gas valve, in the gas supply line to the
Hazard of Explosion!
Never use an open flame to detect gas leaks. Explosive
conditions may occur. Use a leak test solution or other
approved methods for leak testing. Before attempting
to light or relight the pilot, wait 5 minutes to allow gas
which may have accumulated in the burner
compartment to escape. Failure to follow
recommended safe leak test procedures or pilot
lighting/relighting instructions could result in death or
serious injury or equipment or property-only-damage.
2. Turn on the electrical power. The duct furnace should
"Initial Lighting, "
current to the main gas valve if the duct furnace
becomes overheated.
is delayed for approximately 45 seconds once the
thermostat is closed, and continues fan operation for
approximately 65 seconds after the thermostat opens.
Note: The start-up fan delay must not exceed 90
seconds from a cold start.
temperature sensitive switch that operates the vent
and ignition systems to control the temperature of the
space being heated.
Note: The thermostat must be mounted on a vertical,
vibration-free surface, free from air currents,
and in accordance with the furnished
instructions.
duct furnace. Loosen the union in the gas supply line to
purge it of air. Tighten the union and check for leaks.
WARNING
now be under the control of the thermostat. Set the
thermostat to its highest setting; the power venter
motor should start and burner ignition occur. Turn the
thermostat to its lowest setting. The burners and
power venter should stop operating immediately.
Reset the thermostat to the desired operational setting.
GMND-SVX01B-EN