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• Filter access door for filter access and maintenance
that requires no tools.
• Induced draft (negative pressure) combustion sys-
tem with Hall effect sensor to detect proper opera-
tion of induced-draft motor.
• 3 to 6-ton units have one stage of cooling and 7
1
/
2
to 12
1
/
2
-ton units have two stages of cooling. Units
will have either one stage or two stages of gas heat-
ing depending on unit size, voltage, and heating
capacity.
• Heavy Alumagard™ coated heat exchangers, with
aluminized steel burners.
• Heating controls with direct spark ignition and
redundant gas valve. Fan switch, high temperature
limit switch and flame rollout switch standard.
• Fixed orifice metering device precisely controls
refrigerant flow to each circuit individually.
• Reliable accurate control circuit with color coded
wires and easily accessible terminal board.
• Integrated gas control board with built-in diagnostics
to determine error codes and control indoor fan on/
off delays.
• Integrated gas control board provides anti-cycle pro-
tection for gas heat operation.
• Loss of charge (low pressure), freeze protection,
and high pressure switches standard.
FACTORY-INSTALLED OPTIONS
EconoMi$er — Fully Modulating, Gear Driven
Copper/Copper Coils — Evaporator, Condenser, Both
Pre-Coated Condenser Coil
E-Coat (Post-Coated) Condenser Coil
Unit-Mounted Non-Fused Disconnect Switch
115-Volt Convenience Outlet
Alternate Motor and Drive (except 072 and 102 size)
High-Static Motor (except 150 size)
25% Manual Air Damper
FIELD-INSTALLED ACCESSORIES
EconoMi$er — Fully Modulating, Gear Driven
EconoMi$er with 4 to 20 mA Actuator — Fully Modulating,
Gear Driven
Power Exhaust for EconoMi$er
EconoMi$er/Power Exhaust
25% Open Two-Position Damper
25% Open Manual Air Damper
100% Open Two-Position Damper
Durablade Economizer
Solid-State Enthalpy Control
Differential Enthalpy Control
Roof Curb (14- or 24-in. Height)
Thru-the-Bottom/Roof Curb Electrical and
Gas Connection Kit
Time Guard® II Compressor Anti-Cycle Control
Condenser Coil Hail Guard
Condenser Coil Protector
–20 F Motormaster® Low Ambient Control Kit
Programmable Set-Back Thermostat
Liquid Propane (LP) Gas Kit
Flue Hood Protector Kit
Flue Discharge Deflector
Indoor Fan/Filter Status Indicator
Other ____________________