FURNACE SPECIFICATIONS
9
1.
These furnaces are manufactured for natural gas operation. Optional Kits are available for conversion to propane gas operation.
2.
For elevations above 2000 ft. the rating should be reduced by 4% for each 1000 ft. above sea level. The furnace must not be derated, orifice
changes should only be made if necessary for altitude.
3.
The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufactures method in accordance with the
"A.S.H.R.A.E. GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the AIR CONDITIONING CONTRACTORS OF AMERICA. The total
heat loss calculated should be equal to or less than the heating capacity. Output based on D.O.E. test procedures, steady state efficiency times
output.
4.
Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
Unit specifications are subject to change without notice.
ALWAYS
refer to the unit's serial plate for the most up-to-date general and electrical information.
(1)
Wire size should be determined in accordance with National Electrical Codes. Extensive wire runs will require larger wire sizes.
(2)
Maximum Overcurrent Protection Device: May use Time Delay Fuse or HACR type Circuit Breaker of the same size as noted.
(3)
See Installation Instructions for appropriate vent diameter, length and number of elbows.
AMS8
MODEL
A
M
S
8
0
403
A
X
A
M
S
8
0
603
A
X
A
M
S
8
0
604
B
X
A
M
S
8
0
804
B
X
A
M
S
8
0
805
C
X
A
M
S
8
1
005
C
X
A
M
S
8
1
205
D
X
A
M
S
8
1
405
D
N
Btuh Input (US) High Fire
40,000
60,000
60,000
80,000
80,000
100, 000
120, 000
140, 000
Output (US) High Fire
32,000
48,000
48,000
64,000
64,000
80,000
96,000
112, 000
A.F.U.E.
80%
80%
80%
80%
80%
80%
80%
80%
Rated External Static (" w.c.)
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
.20 - .50
Temperature Rise (°F)
25 - 55
25 -55
20 - 50
35 - 65
35 - 65
35 - 65
40 - 70
40 - 70
High Stage Pressure Switch
Trip Point (" w.c.)
-0.70
-0.75
-0.75
-0.70
-0.75
-0.70
-0.80
-0.80
Blower Wheel (D" x W")
10 X 6
10 x 6
10 x 8
10X8
10x10
10X10
11x10
11x10
Blower Horsepower
1/3
1/3
1/2
1/2
1/2
1/2
3/4
3/4
Blower Speeds
4
4
4
4
4
4
4
4
Max CFM @ 0.5 E.S.P.
1298
1157
1883
1725
1960
1974
2131
2131
Power Supply
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
115-60-1
Minimum Circuit Ampacity (MCA)
(1)
8.5
8.5
12.9
12.9
12.9
12.9
15.2
15.2
Maximum Overcurrent Device
(2)
15
15
15
15
15
15
15
15
Transformer (VA)
40
40
40
40
40
40
40
40
Heat Anticipator (Amps)
0.7
0.7
0.7
0.7
0.7
0. 7
0. 7
0. 7
Primary Limit Setting (°F)
210°
150°
150°
150°
160°
150°
160°
160°
Auxiliary Limit Setting (°F)
120°
120°
120°
120°
120°
120°
120°
120°
Rollout Limit Setting (°F)
300°
300°
300°
300°
300°
300°
300°
300°
Gas Supply Pressure
(Natural/Propane) (" w. c.)
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
7 / 11
Manifold Pressure
(Natural/Propane) High Stage (" w.c.)
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
3.5 / 10
Orifice Size (Natural/Propane)
#45 / #55
#45 / #55
#45 / #55
#45 / #55
#45 / #55
#45 / #55
#45 / #55
#43 / #55
Number of Burners
2
3
3
4
4
5
6
6
Vent Connector Diameter (inches)
(3 )
4
4
4
4
4
4
4
4
Shipping Weight (lbs.)
84
88
98
106
114
118
130
130
