Unit Start-Up - Lennox A97UH2E Installation Instructions Manual

Model
Red
030 Allowed
045 Allowed
070 Allowed
090 Allowed
Factory
110
Setting
Model
030
045
070
090
110 Factory Setting

Unit Start-Up

FOR YOUR SAFETY READ BEFORE OPERATING
WARNING
Do not use this furnace if any part has been underwater.
A flood-damaged furnace is extremely dangerous.
Attempts to use the furnace can result in fire or explosion.
Immediately call a qualified service 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.
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
blower deck, before performing any
service procedure.
508390-01
Allowable Heating Speeds
Low Fire Heating Speeds
Yellow Blue
Factory
Allowed
Setting
Factory Not
Setting Allowed
Factory Not
Setting Allowed
Factory Not
Setting Allowed
Not Not
Allowed Allowed
Allowable Circulation Speeds
Red Yellow
Allowed Factory Setting
Allowed Factory Setting
Allowed Factory Setting
Allowed Factory Setting
Allowed
Brown Black Red
Not Not Not
Allowed Allowed Allowed
Not Not Not
Allowed Allowed Allowed
Not Not Not
Allowed Allowed Allowed
Not Not Not
Allowed Allowed Allowed
Not Not Not
Allowed Allowed Allowed
Table 15.
Blue
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Table 16.
Before attempting
maintenance, turn the electrical power to unit OFF at
disconnect switch.
BEFORE LIGHTING the unit, smell all around the furnace
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 unit is equipped with a gas control
switch (lever). 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:
This furnace is equipped with an automatic hot surface
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.
Gas Valve Operation
STOP! Read the safety information at the beginning
1.
of this section.
2. Set the thermostat to the lowest setting.
Issue 2327
High Fire Heating Speeds
Yellow Blue Brown
Factory
Allowed Allowed
Setting
Factory
Allowed Allowed
Setting
Not Factory
Allowed
Allowed Setting
Not Factory
Allowed
Allowed Setting
Factory
Allowed Allowed
Setting
Brown
Not Allowed Not Allowed
Not Allowed Not Allowed
Not Allowed Not Allowed
Not Allowed Not Allowed
Not Allowed Not Allowed
CAUTION
to perform any
Black
Allowed
Allowed
Allowed
Allowed
Allowed
Black
service or
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