Furnace Components; Safety Considerations - Payne PG9MAA User's Information Manual

FURNACE COMPONENTS

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Burner sight glass for viewing burner flame.
2
Burner assembly (inside), operates with energy-
saving, inshot burners and hot surface ignitor for safe,
dependable heating.
3
Combustion-air intake connection (right or left side).
4
Redundant gas valve. Safe, efficient. Features 1 gas con-
trol with 2 internal shutoff valves.
5
Junction box for 115-v electrical power supply.
6
Vent outlet, uses PVC pipe to carry vent gases from the
furnace's combustion system (right or left side).
7
Secondary condensing heat exchanger (inside). Wrings
out more heat through condensation.
Constructed with polypropylene-laminated steel to en-
sure durability.
8
Pressure switch ensures adequate flow of combustion
products through furnace and out vent system.
9
Inducer motor. Pulls hot combustion products through
the heat exchangers, maintaining negative pressure for
added safety.
10
Condensate drain connection, collects moisture
condensed from burned gases for disposal into home
drain system.
11
Heavy-duty blower, circulates air across the heat
exchangers to transfer heat into the home.
12
Air filter and retainer.
13
Rollout switch (manual reset) to prevent
overtemperature.
14
Primary serpentine heat exchanger (inside),
stretches fuel dollars with the S-shaped heat-flow
design. Solid construction of corrosion-resistant
aluminized steel means reliability.

SAFETY CONSIDERATIONS

Installing and servicing of heating equipment can be hazardous due to gas and electrical components. Only trained and qualified
personnel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. Observe safety precautions in this manual, on tags, and on labels attached to the furnace
and other safety precautions that may apply.
Recognize safety information. This is the safety-alert symbol
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER
identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could
result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or
product and property damage.
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MODEL PG9MAA FURNACE
(SHOWN IN UPFLOW POSITION) 1
15
3-amp fuse provides electrical and component
protection.
16
Light emitting diode (LED) on control center. Status code
lights are for diagnosing furnace operation and
service requirements.
17
Control center.
18
Blower access panel safety interlock switch.
19
Transformer (24v) behind control center provides
low-voltage power to furnace control center and
thermostat.
. When you see this symbol on the furnace and in instructions or
!
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