Roberts Gorden COMBAT CTU 22 TO 115 - Manual (Page 14)

COMBAT ® CTU U NIT H EATERS I NSTALLATION O PERATION AND S ERVICE M ANUAL
8
4.4 Technical Data Table
Appliance Category II
2H/L 3B/P
Model CTU-22 CTU-30 CTU-35 CTU-40 CTU-50 CTU-60 CTU-75 CTU-90 CTU-100 CTU-115
Heat Input
Gross CV
kW
(Btu/h) x (1000)
27
93 33
113
39
133
48
163
61
210
70
238
95
324
111
378
119
405
134
459
Heat Input
Net CV
kW
(Btu/h) x (1000)
25
84 30
102
35
119
43
147
55
189
63
215
86
292
100
341
107
365 121
414
Approximate
Heat Output
kW
(Btu/h) x (1000)
23
78 27
92 32
109
39
133
51
174
58
198
78
266
91
310
98
334
111
379
Thermostat Limit Thermodisc
CTUA, B/C, D °C 75 75 75 75 75 75 75 75 75 75
Natural Gas (G20) Data - Inlet Pressure 20 mbar (7.8 in WG) Min. 17 mbar (6.8 in WG) Max. 25 mbar (10 in WG)
Burner Pressure mbar 8.3 8.7 8.5 9.4 9.3 8.5 6.1 6.0 6.2 6.3
Gas Rate
m 3 /h
ft 3 /h
2.6
92
3.2
112
3.7
131
4.5
160
5.8
206
6.6
234
9.0
319
10.5
371
11.3
398 12.8
451
Natural Gas (G25) Data - Inlet Pressure 25 mbar (10 in WG) Min. 20 mbar (7.8 in WG) Max. 30 mbar (12 in WG)
Burner Pressure mbar 12.2 12.7 12.5 14.0 13.6 13.2 9.2 9.3 9.2 10.2
Gas Rate
m 3 /h
ft 3 /h
3.03
107
3.33
117
4.31
152
4.78
169
6.14
217
6.98
247
9.49
335
11.06
391
11.86
419
13.43
474
LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (14.6 WG) Min. 25 mbar (10 in WG) Max. 45 mbar (18 in WG)
Alternative where permitted 50 mbar (20 in WG) Min. 42.5 bar (17 in WG) Max. 57.5 mbar (23 in WG)
Burner Pressure mbar 26.6 24.9 25.4 25.9 25.6 26.8 25.6 27.3 25.3 25.9
Gas Rate
m 3 /h
kg 3 /h
liquid/h
1.01
1.87
3.7
1.23
2.28
4.5
1.48
2.75
5.4
1.77
3.27
6.4
2.27
4.21
8.3
2.58
4.79
9.4
3.51
6.50
12.8 4.09
7.58
14.9
4.39
8.13
16.0 4.97
9.21
18.1
LPG Gas Butane (G30) Data - Inlet Pressure 29 mbar (11,4 in WG) Min. 20 mbar (7.8 in WG) Max. 35 mbar (13.8 WG)
Burner Pressure mbar 18.9 17.4 17.8 19.5 18.4 19.0 18.3 19.4 18.3 18.7
Gas Rate
m 3 /h
kg 3 /h
liquid/h
0.76
1.86
3.2
0.93
2.27
4.0
1.06
2.59
4.5
1.34
3.26
5.7
1.72
4.19
7.3
1.95
4.77
8.3
2.65
6.47
11.3
3.09
7.55
13.2
3.32
8.09
14.1 3.75
9.17
16.0
Gas rates corrected to standard conditions 1013.25 mbar 15° C.