Carrier 58MXA Product Data page 4

NOTES:
1. The 58MXA Furnaces are for use with natural gas, but can be field-converted for propane gas with a factory-authorized and
listed accessory conversion kit.
2. Component location and configuration may be different than shown above.
Combustion-air intake connection to ensure
contaminant-free air (right or left side).
Burner sight glass for viewing burner flame.
Burner assembly (inside). Operates with energy-
saving, inshot burners and hot surface ignitor for
safe, dependable heating.
Redundant gas valve. Safe, efficient. Features 1
gas control with 2 internal shut-off valves.
Vent outlet. Uses PVC pipe to carry vent gases
from the furnace's combustion system (right or
left side).
Inducer motor. Pulls hot flue gases through the
heat exchangers, maintaining negative pressure
for added safety.
Blower access panel safety interlock switch.
Air filter and retainer. May be used for side
return application.
Condensate drain connection. Collects moisture
condensed during the combustion process.
Heavy-duty blower. Circulates air across the
heat exchangers to transfer heat into the
home.
4
2
1
4
18
5
11
16
6
9
10
8
17
3
12
5
14
15
13
7
19
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 construction of corrosion-
resistant aluminized steel means reliability.
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 requirements.
Pressure switch ensures 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.
Transformer (24v) behind control center
provides low-voltage power to furnace control
center and thermostat.
A93202