Unit Start-Up - Lennox DAVE SIGNATURE SL280DFV Installation Instructions Manual

Unit Start-Up

FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Do not use this furnace if any part has been underwater.
Immediately call a licensed professional service
technician (or equivalent) to inspect the furnace and
to replace any part of the control system and any gas
control which has been under water.
WARNING
If overheating occurs or if gas supply fails to shut off,
shut off the manual gas valve to the appliance before
shutting off electrical supply.
CAUTION
Before attempting to perform any service or maintenance,
turn the electrical power to unit OFF at disconnect switch.
WARNING
During blower operation, the ECM motor emits
energy that may interfere with pacemaker operation.
Interference is reduced by both the sheet metal cabinet
and distance.
BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
The gas valve on the SL280DFV unit will be equipped with
either a gas control switch. Use only your hand to move
the control switch. Never use tools. If the switch will not
turn or 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:
SL280DFV units are equipped with an automatic ignition
system. Do not attempt to manually light burners on these
furnaces. 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 units with an automat-
ic ignition system.
WARNING
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 24)
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 switch on gas valve to OFF. Do not force. See
FIGURE 24.
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
instructions. If you do not smell gas go to next step.
WHITE RODGERS GAS VALVE
MANIFOLD
PRESSURE TAP
INLET PRESSURE POST
GAS VALVE SHOWN IN ON POSITION
8 - Move switch on gas valve to ON. Do not force. See
FIGURE 24.
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.
12 - If the appliance will not operate, follow the
instructions "Turning Off Gas to Unit" and call your
service technician or gas supplier.
Turning Off Gas to Unit 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 upper access panel.
4 - Move switch on gas valve to OF. Do not force. See
FIGURE 24.
5 - Replace the upper access panel.
Page 38
HIGH FIRE
LOW FIRE
ADJUSTMENT
ADJUSTMENT
(under cap)
(under cap)
FIGURE 24