Unit Start-Up - Lennox Allied Air A93UH1E Installation Instructions Manual

Unit Start-Up

FOR YOUR SAFETY READ BEFORE OPERATING
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.
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.
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Figure 68. Integrated Control
(Automatic Hot Surface Ignition System)
WARNING
WARNING
120 HUM
LINE
XFMR
CIRC
EAC
COOL
HEAT
FAN
PARK
NEUTRALS
FS
24 COM
HUM 24
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.
Issue 1922
Terminal Designations
Humidifier (120 VAC)
Input (120 VAC)
Transformer (120 VAC)
Indoor Blower (120 VAC)
Electronic Air Cleaner (120 VAC)
Blower - Cooling Speed (24 VAC)
Blower - Heating Speed (24 VAC)
Blower - Fan Speed (24 VAC)
Dead terminals to park all speed taps
Neutral Terminals (120 VAC)
Flame Sense
Common (24 VAC)
Humidifier (24 VAC)
CAUTION
to perform any service or
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