Carrier 58MCA - Safety Considerations and Precautions; General Installation Safety Warnings

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FURNACE COMPONENTS
Combustion-air intake connection to ensure contami-
nant-free air (right or left side).
Burner sight glass for viewing burner flame.
Burner assembly (inside). Operates with energy-saving
pilot, inshot burners, and hot surface igniter for safe,
dependable heating.
Redundant gas valve. Safe, efficient. Features 1 gas con-
trol with 2 internal shutoff valves.
Vent outlet. Uses PVC pipe to carry vent gases from the
furnaces combustion system (right or left side).
Inducer motor. Pulls hot flue gases through the heat ex-
changers, maintaining negative pressure for added safety.
Blower access panel safety interlock switch.
Air filter and retainer.
Condensate drain connection. Collects moisture con-
densed from burned gases for disposal into home drain
system.
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MODELS 58MXA, 58MCA, AND 58MTA
FURNACES (UPFLOW POSITION)
Heavy-duty blower. Circulates air across the heat ex-
changers to transfer heat into the home.
Secondary condensing heat exchanger (inside). Wrings
out more heat through condensation. Constructed with
Polypropylene-laminated steel to ensure durability.
Primary serpentine heat exchanger (inside). Stretches fuel
dollars with the S-shaped heat-flow design. Solid con-
struction of corrosion-resistant aluminized steel means re-
liability.
Control center.
3-amp fuse provides electrical and component protection.
Light emitting diode (LED) on control center. Code lights
are for diagnosing furnace operation and service require-
ments.
Pressure switch(es) ensure adequate flow of flue products
through furnace and out vent system.
Rollout switch (manual reset) to prevent overtemperature.
Junction box for 115-v electrical power supply. (May be
on right or left side)
Transformer (24v) behind control center provides low-
voltage power to furnace control center and thermostat.
Limit switch (manual reset) on 58MVP only.
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MODEL 58MVP
FURNACE (UPFLOW POSITION)