FURNACE SPECIFICATIONS
6
*MSS92
*MSS92
0402BNA
*MSS92
0603BNA
*MSS92
0803BNA
*MSS92
0804CNA
*MSS92
0805CNA
*MSS92
1004CNA
*MSS92
1005CNA
*MSS92
1205DNA
Heating Data
High Fire Input¹
40,000
60,000
80,000
80,000
80,000
100,000
100,000
120,000
High Fire Output¹
36,840
55,260
73,680
73,680
73,680
92,100
92,100
110,520
AFUE²
92
92
92
92
92
92
92
92
Temperature Rise Range (°F)
30 - 60
35 - 65
35 - 65
35 - 65
25 - 55
35 - 65
35 - 65
35 - 65
Vent Diameter³
2" - 3"
2" - 3"
2" - 3"
2" - 3"
2" - 3"
2" - 3"
2" - 3"
3"
No. of Burners
2
3
4
4
4
5
5
6
Circulator Blower
Available AC @ 0.5" ESP
1.5 - 3
1.5 - 3
1.5 - 3
3 - 5
3 - 5
3 - 5
3 - 5
3 - 5
Size (D x W)
10" x 8"
10" x 8"
10" x 8"
10" x 10"
11" x 10"
10" x 10"
11" x 10"
11" x 11"
Horsepower @ 1075 RPM
1/3
1/3
1/3
1/2
3/4
1/2
3/4
3/4
Speed
4
4
4
4
4
4
4
4
Filter Size (in²)
Permanent
363
491
654
654
818
818
818
981
Disposable
182
245
327
327
409
409
409
491
Electrical Data
Min. Circuit Ampacity
9.6
9.6
9.6
11.7
13.7
11.7
13.7
13.7
Max. Overcurrent Device (amps)
15
15
15
15
15
15
15
15
Shipping Weight (lbs)
109
112
115
137
138
139
140
152
¹ Natural Gas BTU/h
² DOE AFUE based upon Isolated Combustion System (ICS)
Notes
• All furnaces are manufactured for use on 115 VAC, 60 Hz, single-phase electrical supply.
• Gas Service Connection ½" FPT
• For bottom return: Failure to unfold flanges may reduce airflow by up to 18%. This could result in performance and noise issues.
³ Installer must supply one or tw o PVC pipes: one for combustion air (optional) and one for the flue outlet (required). Vent pipe must be either
2" or 3" in diameter, depending upon furnace input, number of elbow s, length of run and installation (1 or 2 pipes). The optional Combustion
Air Pipe is dependent on installation/code requirements and must be 2" or 3" diameter PVC.
?
Minimum Circuit Ampacity = (1.25 x Circulator Blow er Amps) + ID Blow er amps. Wire size should be determined in accordance w ith
National Electrical Codes. Extensive w ire runs w ill require larger w ire sizes.
?
Maximum Overcurrent Protection Device refers to maximum recommended fuse or circuit breaker size. May use fuses or HACR-type circuit
breakers of the same size as noted.
• For servicing or cleaning, a 24" front clearance is required. Unit connections (electrical, flue and drain) may necessitate greater clearances
than the minimum clearances listed above. In all cases, accessibility clearance must take precedencee over clearances from the enclosure
w here accessibility clearances are greater.
• Important: Size fuses and w ires properly and make electrical connection in accordance w ith the National Electrical Code and/or all existing
local codes.
