Roberts Gorden Compact Tubular Unit Heaters CTCU 27 - Manual (Page 15)

SECTION 5: S PECIFICATIONS
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5.2 General Technical Data Table (All Models)
Electrical load at 230 V 50 Hz measured by calculating from total run current of appliance.
* Do not exceed the maximum length of flue stated or heater may not operate properly.
Reduce the maximum length stated by 1 m for each 90° bend installed.
**If minimum air flow requirements are not met, then temperature limit devices will shut down the heater.
5.3 Technical Data Table (All Models)
Appliance Category II
2H/L 3B/P
Gas rates corrected to standard conditions 1013.25 mbar 15° C
Model CTCU-7 CTCU-11 CTCU-15 CTCU-22 CTCU-27 / 32
CTCUA, Axial Fans
Total Electrical Load W 260 274 336 384 345
Run Current A 1.1 1.2 1.5 1.7 1.5
Start Current A 1.7 1.8 2.5 2.9 2.6
Air Flow m 3 /h 1120 1220 2710 2750 4474
Air Throw m 9 12 14 16 16
Sound Pressure Level at 3 m
[NR]
dB(A)
[31]
37
[35]
41
[39]
45
[42]
48
[42]
48
Flue and AIr Intake
Flue and Air Intake Size mm Ø 80 80 80 80 100
*Maximum Straight Flue/Air Intake m 2.5 4 5 5 5
Model CTCU-7 CTCU-11 CTCU-15 CTCU-22 CTCU-27 CTCU-32
Heat Input
Gross CV
kW
(Btu/h) x (1000)
8.5
29
13.4
46
18.3
62
27.5
94
33
113
38.5
131
Heat Input
Net CV
kW
(Btu/h) x (1000)
7.7
26
12.1
41
16.5
56
24.8
85
29.7
101
34.7
118
Approximate
Heat Output
kW
(Btu/h) x (1000)
7.1
24
11.1
38
15.1
52
23
78 27.2
93
31.7
108
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 9.5 9.5 9.5 9.5 9.0 9.0
Gas Rate
m 3 /h
ft 3 /h
0.8
29
1.3
45
1.7
62
2.6
93
3.1
110
3.6
127
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 9.0 9.0 9.5 9.2 9.2 9.3
Gas Rate
m 3 /h
ft 3 /h
0.9
33
1.5
52
2.0
72
3
108
3.6
127
4.2
148
LPG / 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 25.6 29.4 29.4 28.6 29.9 29.9
Gas Rate
m 3 /h
kg/h
0.3
0.59
0.5
0.93
0.7
1.27
1
1.91
1.2
2.3
1.4
2.68
LPG / 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 19.2 21.9 22.9 21.4 21.4 22.4
Gas Rate
m 3 /h
kg/h
0.2
0.6 0.4
0.94
0.5
1.28
0.8
1.93
.9
2.31
1.1
2.7
Gas Connection
CTCUA R - 1/2" R - 1/2" R - 1/2" R - 1/2" R - 1/2" R - 1/2"