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PHYSICAL DATA
UNIT SIZE
045
070
090
08
12
08
12
16
14
16
OUTPUT CAPACITY BTUH*
(Nonweatherized ICS) †
58STX Upflow; all 58STA
35,000
36,000
53,000
54,000
53,000
71,000
71,000
58STX Downflow/Horizontal
34,000
34,000
51,000
51,000
51,000
68,000
68,000
INPUT BTUH*
58STX Upflow; all 58STA
44,000
44,000
66,000
66,000
66,000
88,000
88,000
58STX Downflow/Horizontal
42,000
42,000
63,000
63,000
63,000
84,000
84,000
AFUE%*
Nonweatherized ICS
80.0
80.0
80.0
80.0
80.0
80.0
80.0
SHIPPING WEIGHT --- LB (KG)
104 (47)
107 (49)
111 (50)
115 (52)
126 (57)
127 (58)
140 (64)
CERTIFIED TEMP RISE RANGE ° F (° C)
30---60
(17---33)
20---50
(11---28)
40---70
(22---39)
30---60
(17---33)
25---55
(14---30)
40---70
(22---39)
30---60
(17---33)
CERTIFIED EXT
STATIC PRESSURE
Heating
0.10
0.10
0.12
0.12
0.12
0.15
0.15
Cooling
0.50
0.50
0.50
0.50
0.50
0.50
0.50
AIRFLOW CFM‡
Heating
920
1250
720
1195
1450
1375
1505
Cooling
845
1160
900
1200
1530
1385
1720
LIMIT CONTROL
SPST
HEATING BLOWER CONTROL
Solid-State Time Operation
BURNERS (Monoport)
2
2
3
3
3
4
4
GAS CONNECTION SIZE
1/2---in. NPT
GAS VALVE (Redundant) Manufacturer
White-Rodgers
Minimum Inlet Pressure (In. wc)
4.5 (Natural Gas)
Maximum Inlet Pressure (In. wc)
13.6 (Natural Gas)
IGNITION DEVICE
Hot Surface
* Gas input ratings are certified for elevations to 2000 ft. (610 M). In USA, for elevations above 2000 ft. (605 M), reduce ratings 4 percent for each 1000 ft.
(305 M) above sea level. In Canada, derate the unit 10 percent for elevations 2000 to 4500 ft (610 to 1372 M) above sea level. Refer to National Fuel Gas
Code NFPA 54/ANSI Z223.1---2006 Table F.1 (d) or furnace Installation Instructions.
† Capacity in accordance with U.S. Government DOE test procedures.
‡ Airflow shown is for bottom only return---air supply. For air delivery above 1800 CFM, see Air Delivery Table for other options. A filter is required for each
return-air supply.
ICS — Isolated Combustion System
BLOWER PERFORMANCE DATA
UNIT SIZE
045
070
090
08
12
08
12
16
14
16
DIRECT---DRIVE MOTOR Hp (PSC)
1/5
1/3
1/5
1/3
1/2
1/3
1/2
MOTOR FULL LOAD AMPS
2.9
5.2
2.9
5.2
7.9
5.2
7.9
RPM (Nominal)
1075---3
1075---3
1075---3
1075---3
1075---3
1075---3
1075---3
BLOWER WHEEL DIAMETER X WIDTHS --- IN. (mm)
10 x 6
(254 x 152)
10 x 6
(254 x 152)
10 x 6
(254 x 152)
10 x 6
(254 x 152)
11 x 8
(279 x 203)
10 x 8
(254 x 203)
10 x 10
(254 x 254)
ECM---Electronically Commutated Motor, Variable Speed
58ST
A
/S
TX
Summary of Contents for 58STX
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