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SPECIFICATIONS
* Gas input ratings are certified for elevations to 2000 ft. For elevations above 2000 ft, reduce ratings 4 percent for each 1000 ft above sea level. Refer to
National Fuel Gas Code Table F4 or furnace Installation Instructions. In Canada, derate the unit 10 percent for elevations 2000 ft to 4500 ft above sea level.
† Capacity and AFUE in accordance with U.S. government DOE test procedures.
‡•Airflow shown is for bottom only return-air supply with factory-supplied 1-in. washable filter(s).
• For air delivery above 1800 CFM, see Air Delivery table for other options.
• An airflow reduction of up to 7% may occur when using the factory-specified 4-5/16-inch wide, high efficiency media filter.
• For best furnace efficiency when using the 4-5/16-inch wide media filter, adjust the blower speed tap to near the mid-point of the rise range.
** Time-delay type is recommended.
ICS—Isolated Combustion System
N/A—Not Applicable
UNIT SIZE 024045 036045 024070 036070 042091 048091
RATINGS AND PERFORMANCE
Input Btuh* 44,000 44,000 66,000 66,000 88,000 88,000
Output Capacity (Btuh)† Nonweatherized ICS 35,000 35,000 53,000 53,000 71,000 71,000
AFUE† Nonweatherized ICS 80.0 80.0 80.0 80.0 80.0 80.0
Certified Temperature Rise Range °F25—55 15—45 40—70 30—60 40—70 30—60
Certified External Static Pressure Heat/Cool 0.10/0.50 0.10/0.50 0.12/0.50 0.12/0.50 0.15/0.50 0.15/0.50
Airflow CFM‡ Heating 855 980 830 1140 1170 1445
Cooling 880 1250 880 1195 1360 1740
ELECTRICAL
Unit Volts—Hertz—Phase 115—60—1
Operating Voltage Range Min—Max 104—127
Maximum Unit Amps 6.0 8.3 5.9 8.7 9.0 10.4
Maximum Wire Length (Measured 1 Way in Ft) 47 34 47 32 31 27
Minimum Wire Size 14
Maximum Fuse or Ckt Bkr Size (Amps)** 15
Transformer (24v) 40va
External Control Heating 12va
Power Available Cooling 35va
Air Conditioning Blower Relay Standard
CONTROLS
Limit Control SPST
Heating Blower Control Solid-State Time Operation
Burners (Monoport) 2 2 3 3 4 4
Gas Connection Size 1/2-in. NPT
GAS CONTROLS
Gas Valve (Redundant) White Rodgers
Min Inlet Pressure (In. wc) 4.5 (Natural Gas)
Max Inlet Pressure (In. wc) 13.6 (Natural Gas)
Ignition Device Hot Surface
BLOWER DATA
Direct-Drive Motor HP (PSC) 1/5 1/3 1/5 1/3 1/3 1/2
Motor Full Load Amps 2.9 5.8 2.9 5.8 5.8 7.9
RPM (Nominal)—Speeds 1075—3 1075—4 1075—3 1075—4 1075—4 1075—4
Blower Wheel Diameter x Width (In.) 10 x 6 10 x 6 10 x 6 10 x 6 10 x 7 10 x 8
Filter Size (In.)—Permanent Washable (Supplied) (1) 16 x 25 x 1 (1) 20 x 25 x
1
FACTORY-AUTHORIZED DEALER-INSTALLED ACCESSORIES
Twinning Kit N/A
KGATW0401HSI
Gas Conversion Kit—Natural-to-Propane KGANP2001ALL
Gas Conversion Kit—Propane-to-Natural KGAPN1601ALL
Air Cleaner Model AIRA or 902B
Humidifier Model HUM
Ventilator Model VA3B, VB5B, VC5B, or VL3A