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WARNING
Carbon monoxide gas is invisible, odorless and tox-
ic.
Exposure to carbon monoxide gas can cause personal in-
jury and even death to all occupants, including pets. Any
item that is powered by or gives off heat from a combustion
process (including lawn mowers, automobiles, and fire-
places) has the potential to produce carbon monoxide gas.
Because of this, Lennox recommends the use of a car-
bon monoxide detector in your home, even if you do
not own gas appliances. Reliable detectors are available
at reasonable retail prices. Contact your Lennox dealer for
more details about this investment in your safety.
Your furnace is designed to meet standards set by national
agencies, and to operate safely when properly installed
and maintained. However, the unit's performance can be
greatly impacted by the individual installation and the oper-
ating environment. It is your responsibility to ensure that
this appliance is maintained.
Proper maintenance is critical for your safety and the satis-
factory operation of the product. Lennox strongly recom-
mends annual inspection and maintenance of this ap-
pliance. Contact your Lennox dealer for an inspection by a
licensed professional service technician.
DANGER
Danger of explosion.
There are circumstances in which odorant used with
LP/propane gas can lose its scent. In case of a leak,
LP/propane gas will settle close to the floor and may
be difficult to smell. An LP/propane leak detector
should be installed in all LP applications.
Do not attempt to bleed the gas lines of air. Call your
local gas provider.
Start−Up & Operation Information
WARNING
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or death.
BEFORE PLACING THE UNIT INTO OPERATION, 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 SLP98UH is equipped with a gas con-
trol switch. Use only your hand to move the control switch.
Never use tools. If the switch will not move by hand, do not
try to repair it. Call a licensed professional service techni-
cian (or equivalent). Force or attempted repair may result in
a fire or explosion.
Placing the SGLP9UH furnace into operation:
SLP98UH070 units are equipped with a SureLight
system. Do not attempt to manually light burners on this
furnace. Each time the thermostat calls for heat, the burn-
ers will automatically light. The ignitor does not get hot
when there is no call for heat on units with SureLight
tion system.
Operating the Gas Valve (Figure 2)
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 outer access panel.
6 − Move the gas valve switch to the OFF position. See fig-
ure 2.
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.
VARIABLE CAPACITY GAS VALVE
GAS VALVE
SWITCH
GAS VALVE SHOWN IN ON POSITION
8 − Move gas valve switch to ON position. See figure 2.
9 − Replace the outer access panel.
10 − Turn on all electrical power to to the unit.
11 − Set the thermostat to desired setting.
Page 4
®
FIGURE 2
ignition
®
igni-
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