Stainless steel floor standing condensing boiler. 7 single models available in outputs (@50/30°C) of 75, 90, 120, 160, 220, 270 and 320kW.

Single models can be stacked vertically to create 7 dual models available in outputs (@50/30°C) of 150, 180, 240, 320, 440, 540, 640kW.

 

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The turndown ratio for this product is up to 2.5:1.
Warranty 2 product item
  • 7 models with single boiler outputs ranging from 75kW to 320kW
  • The option of dual models stacking one above the other, including manifold kits, covering outputs up to 640kW from a single boiler footprint
  • High quality titanium stainless steel combustion chamber, shell and flue ways helps to ensure a long life
  • Separate high temperature and low temperature return connections help maintain optimum condensing performance with mixed temperature circuit installations
  • Easy access to plant room as the smaller Ansty models fit through a standard doorway
  • Buy in confidence from a UK manufacturer with decades of commercial heating and hot water expertise
  • Extensive back up and support from our team of experienced engineers across the UK
  • Long term commitment to spare parts
  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  
Ansty boiler brochure Ansty boiler brochure Product brochures 2438 ko Download
Ansty boiler dimensions Ansty boiler dimensions Dimensions 242 ko Download
Ansty boiler data tables Ansty boiler data tables Data tables 88 ko Download
Ansty installation manual Ansty installation manual Installers guides 1495 ko Download
Ansty boiler wiring diagram Ansty boiler wiring diagram Wiring diagrams 80 ko Download
Ansty seasonal efficiency Ansty seasonal efficiency Seasonal efficiency sheets 108 ko Download
  • 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.