Lennox Allied Air A96UH2E - Unit Start-Up; FOR YOUR SAFETY READ BEFORE OPERATING; Placing the Furnace into Operation; Gas Valve Operation

507581-04 Page 53 of 60Issue 2128
Unit Start-Up
FOR YOUR SAFETY READ BEFORE OPERATING
Do not use this furnace if any part has been underwater.
A ood-damaged furnace is extremely dangerous.
Attempts to use the furnace can result in re or explosion.
Immediately call a qualied 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.
WARNING
Before attempting to perform any service or
maintenance, turn the electrical power to unit OFF at
disconnect switch.
CAUTION
BEFORE LIGHTING the unit, smell all around the furnace
area for gas. Be sure to smell next to the oor because
some gas is heavier than air and will settle on the oor.
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 re 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
1. STOP! Read the safety information at the beginning
of this section.
2. Set the thermostat to the lowest setting.
Allowable Heating Speeds
Model
Low Fire Heating Speeds High Fire Heating Speeds
Red Yellow Blue Brown Black Red Yellow Blue Brown Black
A96UH2E030B08S Allowed
Factory
Setting
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Allowed
Factory
Setting
Allowed Allowed
A96UH2E045B12S Allowed
Factory
Setting
Not
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Allowed
Factory
Setting
Allowed Allowed
A96UH2E070B12S Allowed
Factory
Setting
Not
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Factory
Setting
Allowed Allowed
A96UH2E090C16S Allowed
Factory
Setting
Not
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Allowed
Factory
Setting
Allowed
A96UH2E110C20S
Factory
Setting
Not
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Not
Allowed
Allowed Allowed
Factory
Setting
Allowed
Table 15.
Allowable Circulation Speeds
Model Red Yellow Blue Brown Black
A96UH2E030B08S Allowed Factory Setting Not Allowed Not Allowed Not Allowed
A96UH2E045B12S Allowed Factory Setting Not Allowed Not Allowed Not Allowed
A96UH2E070B12S Allowed Factory Setting Not Allowed Not Allowed Not Allowed
A96UH2E090C16S Allowed Factory Setting Not Allowed Not Allowed Not Allowed
A96UH2E110C20S Factory Setting Allowed Not Allowed Not Allowed Not Allowed
Table 16.