Sterling SC User Manual
Page 4
4
Table 1 - Performance and Dimensional Data - Separated Combustion Tubular Blower Unit Heater
Unit Capacity (MBH)
100
125
150
175
200
250
300
350
400
PERFORMANCE DATA†
Input - BTU/Hr.
100,000
125,000
150,000
175,000
200,000
250,000
300,000
350,000
400,000
(kW)
(29.3)
(36.6)
(44.0)
(51.3)
(58.6)
(73.3)
(87.9)
(102.6)
(117.2)
Output - BTU/Hr.
83,000
103,750
124,500
145,250
166,000
207,500
246,000
290,500
332,000
(kW)
(24.3)
(30.4)
(36.5)
(42.6)
(48.6)
(60.8)
(72.1)
(85.1)
(97.3)
Thermal Effi ciency - %
83
83
83
83
83
83
82
83
83
Free
Air
Delivery
-
CFM
1,181 1,476 1,771 2,067 2,362 2,953 3,501 4,134 4,724
(cu. m/s)
(0.557)
(0.697)
(0.836)
(0.976)
(1.115)
(1.394)
(1.652)
(1.951)
(2.230)
Air Temperature Rise - Deg. F
65
(Deg. C)
(36)
Outlet Velocity - FPM
370
463
555
395.0
451.0
564.0
422
498
570
(m/s)
(1.879)
(2.351)
(2.819)
(2.006)
(2.291)
(2.864)
(2.143)
(2.529)
(2.895)
Full Load Amps at 115V
7.3
9.4
9.4
14.2
14.2
15.6
15.6
20.8
20.8
Maximum Circuit Ampacity
8.6
11.2
11.2
17.1
17.1
18.9
18.9
25.4
25.4
MOTOR DATA:
Motor HP
1/4
1/2
3/4
1
1-1/2
Motor kW
0.19
0.37
0.56
0.75
1.11
Motor Type**
SPH
SPH
SPH
Cap. Start
Cap. Start
RPM
1,725
1,725 1,725 1,725 1,725
Amps @ 115V
5.1
7.2
11.6
13.0
18.2
DIMENSIONAL DATA - inches (mm)
"A" Height to Top of Flue
33-3/4
34
(857)
(864)
"B" Jacket Width of Unit
20-3/4
32-3/4
50-3/4
(527)
(832)
(1289)
"C" Width to Centerline Flue
13-3/8
19-3/8
28-3/8
(340)
(492)
(721)
"D" Depth to Front Hanger
21
(533)
"E" Hanging Distance Width
18-5/8
30-5/8
48-5/8
(473)
(778)
(1235)
"F" Hanging Distance Depth
19
19-1/2
32-3/4
23-1/2
32-3/4
(483)
(495)
(832)
(597)
(832)
"G" Discharge Opening Width
18-3/4
30-3/4
48-3/4
(476)
(781)
(1238)
"H" Depth to Centerline Flue
4-3/4
5-1/8
(121)
(130)
"M" Overall Unit Width
25-1/4
37-1/4
55-1/4
(641)
(946)
(1403)
"P" Overall Unit Depth
49-3/4
49-3/8
56-1/8
53-3/8
56-1/8
(1264)
(1254)
(1426)
(1356)
(1426)
*Flue Size Diameter - in
5
6
(mm)
(127)
(152)
Gas Inlet, Natural Gas - in
1/2
3/4
Gas Inlet, LP Gas - in
1/2
1/2 OR 3/4
Approximate Unit Weight - lb
173
177
204
248
267
292
374
394
433
(kg)
(78)
(80)
(92)
(112)
(121)
(132)
(170)
(179)
(196)
Approximate Ship Weight - lb
258
263
291
384
403
428
524
551
599
(kg)
(117)
(119)
(132)
(174)
(183)
(194)
(238)
(250)
(272)
† Ratings shown are for unit installations at elevations between 0 and 2,000 ft (0 to 610m). For unit installations in U.S.A. above 2,000 ft. (610m), the unit input must be fi eld derated 4% for each
1,000 ft. (305m) above sea level; refer to local codes, or in absence of local codes, refer to the latest edition of the National Fuel Gas Code, ANSI Standard Z223.1 (N.F.P.A. No. 54).
For installations in Canada, any reference to deration at altitudes in excess of 2,000 ft. (610m) are to be ignored. At altitudes of 2,000 ft. to 4,500 ft. (610 to 1372m), the unit must be fi eld derated
to 90% of the normal altitude rating, and be so marked in accordance with the ETL certifi cation. See Table 8A for fi eld deration information.
* Flue collar is factory supplied with unit; to be fi eld installed per included instructions.
** LEGEND:
SPH = SPLIT PHASE CAP. START = CAPACITOR START