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  Boiler model Units AS75 AS90 AS120 AS160 AS220 AS270 AS320
Energy Heat output to water - Gross
Non condensing 80/60°C
kW
Btu/hr x 1000
67.7
231
81.2
277
108.2
369.2
144.3
492.3
198.5
677.3
243.6
831.2
280.1
989.8
Heat output to water - Gross
Condensing 50/30°C
kW
Btu/hr x 1000
75
255.9
90
307.1
120
409.4
160
545.9
220
750.6
270
921.2
320
1091.8
Heat input (net) - Gross
                                                           
kW
Btu/hr x 1000
78.5
267.8
94.3
321.7
126.3
430.9
168.3
574.2
230.4
786.1
282.7
964.6
336.7
1148.8
Heat input (net) - Net
                                                            
kW
Btu/hr x 1000
69.8
238.2
83.7
285.6
112.2
382.8
149.5
510.1
204.7
698.4
251.2
856.8
299.1
1020.5
Water Water content
                                                                       
l
UK gal
97
21
97
21
97
21
112
25
147
33
230
51
230
51
Design flow rate
'@11°C ΔT
l/min
UK gal/min
98
22.5
117
25.7
156
34.3
208
45.8
287
63.1
352
77.4
417
91.7
Waterside pressure drop
'@11°C ΔT
mbar
in wg
0.8
0.3
1
0.4
1.2
0.5
1.3
0.5
1.5
0.6
1.6
0.6
1.8
0.7
Design flow rate
'@20°C ΔT
l/min
UK gal/min
54
11.9
64
14.1
86
18.9
115
25.3
158
34.8
194
42.7
229
50.4
Waterside pressure drop
'@20°C ΔT
mbar
in wg
0.25
0.1
0.3
0.1
0.36
0.1
0.39
0.2
0.45
0.2
0.48
0.2
0.54
0.2
Flow rate
'@40°C ΔT
l/min
UK gal/min
27
5.9
32
7.0
43
9.5
57
12.5
79
17.4
97
21.3
115
25.3
Maximum water pressure
                                                                             
bar
psig
5
72.5
5
72.5
5
72.5
5
72.5
5
72.5
5
72.5
5
72.5
Maximum water flow temperature °C 100 100 100 100 100 100 100
Gas Combustion resistance
                                                                             
bar
psig
0.7
1.75
0.9
2.25
1.5
3.75
2.5
6.25
2.8
7
3
7.5
3.8
9.5
Input rate
Natural gas (G20)
m3/h
ft
3/h
7.38
260.61
8.86
312.9
11.87
419.2
15.82
558.7
21.66
764.9
26.58
938.7
31.65
1117.7
Nominal inlet pressure required
Natural gas - inlet to gas train
mbar
in wg
20
8
20
8
20
8
20
8
20
8
20
8
20
8
Approx. flue gas volume
at NTP natural gas
m3/h
ft
3/h
98
3461
118
4167
158
5580
210
7416
288
10170
352
12431
420
14832
Approx. flue gas temp - nat. gas
'@30° return temp
°C
°F
45
113
45
113
45
113
45
113
45
113
45
113
45
113
Flue Flue connection O/D
                                                                                   
mm
in
151
5.95
151
5.95
151
5.95
181
7.13
181
7.13
201
7.91
201
7.91
Flue draught requirements Balanced condition at boiler outlet
Electrical Electrical supply - boiler / burner 230V 1PH 50hz
Start current Amps 2.6 2.6 4.5 4.5 4.8 4.8 4.8
Run current Amps 0.7 0.7 1.4 1.4 1.3 1.3 1.3
  Title Type Size  
  • Easy fit for replacement and refurbishment projects.
  • New build projects.
  • Housing developments and flats using district heating networks.
  • Large commercial and public buildings including schools, hospitals and hotels.
  • Medium sized commercial and public buildings including schools, hospitals, offices and hotels.
  • Locations with substantial and continuous heating loads including hospitals, care homes and hotels.
  • Installations with mixed high and low temperature circuits.