Sterling TD - Manual (Page 5)

5
PERFORMANCE DATA
Table 2 - Tubular Duct Furnace Performance Data
INPUT OUTPUT
(Max.) (Min.) Min. Temp. Rise P.D. Max. Temp. Rise P.D.
UNIT MBH MBH MBH CFM Deg. F in. W.C. CFM Deg. F in. W.C.
SIZE (kW) (kW) (kW) (cu. m/s) (Deg. C) (kPa) (cu. m/s) Deg. C (kPa)
100 100 50 82 758 100 0.07 2528 30 0.65
(29.3) (14.6) (24.0) (0.357) (56) (0.017) (1.193) (17) (0.16)
150 150 75 123 1137 100 0.03 3792 30 0.44
(43.9) (21.9) (36.0) (0.536) (56) (0.007) (1.789) (17) (0.11)
200 200 100 164 1517 100 0.04 5057 30 0.54
(58.6) (29.3) (48.0) (0.715) (56) (0.009) (2.386) (17) (0.13)
250 250 125 205 1896 100 0.08 6321 30 0.76
(73.2) (36.6) (60.0) (0.894) (56) (0.019) (2.983) (17) (0.19)
300 300 150 246 2275 100 0.03 7585 30 0.69
(87.8) (43.9) (72.0) (1.074) (56) (0.007) (3.579) (17) (0.16)
350 350 175 287 2654 100 0.07 8849 30 0.76
(102.5) (51.2) (84.1) (1.252) (56) (0.017) (4.176) (17) (0.19)
400 400 200 328 3034 100 0.08 10,114 30 0.70
(117.1) (58.6) (96.1) (1.431) (56) (0.019) (4.773) (17) (0.17)
Ratings are shown for unit installations at elevations between 0 and 2,000 feet (610m). For unit installations in U.S.A. above 2,000 feet
(610m), the unit input must be fi eld derated 4% for each 1,000 feet (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 (NFPA 54). For installations in Canada, any references to
deration at altitudes in excess of 2,000 feet (610m) are to be ignored. At altitudes of 2,000 to 4,500 feet (610 to 1372m), the unit must be fi eld
derated and be so marked in accordance with the ETL certifi cation. See Table 7A for U.S.A. and Canadian fi eld deration information.
Figure 2
Size 200 Size 250
Size 300
Size 350
Size 400
Size 150 Size 100
0
25
50
75
100
125
150
175
200
225
250
275
300
0 1 2 3 4 5
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Pa
m 3 /s
Pressure Drop,
i
n
ches
W
.C.
Temperature Rise and Pressure Drop Graph
Size 150 Size 200 Size 250 Size 300 Size 350 Size 400 Size 100
6
11
16
21
26
31
36
41
46
51
56
10
20
30
40
50
60
70
80
90
100
0 2000 4000 6000 8000 10000
°C
T
e
mperature R
ise,
°
F
Airflow (CFM)