Maintenance - Lennox EL296UHV SERIES User's Information Manual

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 EL296UHV will be equipped with a
gas control switch. Use only your hand to move the 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 EL296UHV furnace into operation:
EL296UHV units are equipped with an ignition system. Do
not attempt to manually light burners on this furnace. Each
time the thermostat calls for heat, the burners will automati­
cally light. The ignitor does not get hot when there is no call
for heat on units with this ignition 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 upper access panel.
6 - Move switch on gas valve to OFF. See figure 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.
8 - Move switch on gas valve to ON. See figure 2.
INLET PRESSURE POST
GAS VALVE SHOWN IN ON POSITION
FIGURE 2
9 - Replace the upper 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 section
"Turning Off Gas to the Unit" and call your licensed pro­
fessional service technician (or equivalent).
Turning Off Gas to the Unit
If overheating occurs or if gas supply fails to shut off,
shut off the manual gas valve to the furnace before
shutting off electrical supply.
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 OFF.
5 - Replace the upper access panel.
Do not set thermostat below 60°F (16°C) in heating
mode. Setting thermostat below 60°F (16°C) reduces
the number of heating cycles. Damage to the unit
may occur that is not covered by the warranty.
Filters
All EL296UHV filters are installed external to the unit. Fil­
ters should be inspected monthly. Clean or replace the fil­
ter(s) when necessary to ensure proper furnace operation.
A filter must be in place when the unit is operating. See
table 1 for recommended filter sizes.
NOTE - Use replacement filters that are similar in size and
efficiency ratings to those originally provided by the in­
stalling contractor. Use of replacement filters with higher fil­
tration ratings may restrict air flow to the furnace. This may
result in reduced unit efficiency, as well as premature blow­
er motor failure.
Furnace
Cabinet Width
17-1/2"
21"
24-1/2"

Maintenance

A licensed professional service technician (or equivalent)
should inspect the complete system each season (heating
and cooling). The following maintenance procedures
should only be conducted by a licensed professional ser­
vice technician (or equivalent). Do not attempt to service
the unit in any way.
Page 4
WARNING
CAUTION
TABLE 1
Filter Size
Side Return Bottom Return
16 X 25 X 1 (1) 16 X 25 X 1 (1)
16 X 25 X 1 (1) 20 X 25 X 1 (1)
16 X 25 X 1 (2) 24 X 25 X 1 (1)