Unit Start Up - Lennox EL296DFV Installation Instructions Manual

Unit Start-Up
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING
Do not use this furnace if any part has been under­
water. A flood-damaged furnace is extremely dan­
gerous. Attempts to use the furnace can result in
fire or explosion. Immediately call a qualified ser­
vice technician to inspect the furnace and to replace
all gas controls, control system parts, and electrical
parts that have been wet or to replace the furnace,
if deemed necessary.
CAUTION
Before attempting to perform any service or mainte­
nance, turn the electrical power to unit OFF at dis­
connect switch.
WARNING
Danger of explosion. Can cause injury
or product or property damage. Should
the gas supply fail to shut off or if
overheating occurs, shut off the gas
valve to the furnace before shutting off
the electrical supply.
BEFORE LIGHTING the unit, smell all around the fur­
nace area for gas. Be sure to smell next to the floor be­
cause some gas is heavier than air and will settle on the
floor.
The gas valve on the EL296DFV is equipped with a gas
control switch. Use only your hand to move switch. Never
use tools. If the switch will not move by hand, do not try to
repair it. Force or attempted repair may result in a fire or
explosion.
Placing the furnace into operation:
EL296DFV units are equipped with an automatic hot sur­
face ignition system. Do not attempt to manually light
burners on this furnace. Each time the thermostat calls
for heat, the burners will automatically light. The ignitor
does not get hot when there is no call for heat on these
units.
Priming Condensate Trap
The condensate trap should be primed with water prior to
start-up to ensure proper condensate drainage. Either
pour 10 fl. oz. (300 ml) of water into the trap, or follow
these steps to prime the trap:
1 - Follow the lighting instructions to place the unit into op­
eration.
2 - Set the thermostat to initiate a heating demand.
3 - Allow the burners to fire for approximately 3 minutes.
4 - Adjust the thermostat to deactivate the heating de­
mand.
5 - Wait for the combustion air inducer to stop. Set the
thermostat to initiate a heating demand and again al­
low the burners to fire for approximately 3 minutes.
6 - Adjust the thermostat to deactivate the heating de­
mand and wait for the combustion air inducer to stop.
At this point, the trap should be primed with sufficient
water to ensure proper condensate drain operation.
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or death.
Gas Valve Operation (Figure 60)
1 - STOP! Read the safety information at the beginning of
this section.
2 - Set the thermostat to the lowest setting.
3 - Turn off all electrical power to the unit.
4 - This furnace is equipped with an ignition device which
automatically lights the burners. Do not try to light the
burners by hand.
5 - Remove the access panel.
6 - Move gas valve switch to OFF. See figure 60.
7 - Wait five minutes to clear out any gas. If you then smell
gas, STOP! Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's instruc­
tions. If you do not smell gas go to next step.
8 - Move gas valve switch to ON. See figure 60.
9 - Replace the access panel.
10- Turn on all electrical power to to the unit.
11- Set the thermostat to desired setting.
NOTE - When unit is initially started, steps 1 through 11
may need to be repeated to purge air from gas line.
INLET PRESSURE POST
GAS VALVE SHOWN IN ON POSITION
12- If the appliance will not operate, follow the instructions
"Turning Off Gas to Unit" and call your service techni­
cian or gas supplier.
Turning Off Gas to Unit
1 - Set the thermostat to the lowest setting.
2 - Turn off all electrical power to the unit if service is to be
performed.
3 - Remove the access panel.
Page 55
WARNING
HIGH FIRE ADJUSTMENT
MANIFOLD
SCREW
PRESSURE POST
(under cap)
FIGURE 60