Technical data

7
Technical Data c Models
Purewell VariHeat Condensing Boilers
Performance and General Data Information - Natural Gas
Boiler Model PV70c PV95c PV110c PV140c PV180c
Energy
Building regualtions - seasonal efficiency (%) gross 95.35 95.62 95.89 95.74 94.63
Boiler output 80/60°C kW
Btu/hr x 1000
63.5
217
86.3
294
98.8
340
134.4
448
172.8
590
Boiler output 50/30°C kW
Btu/hr x 1000
70
239
95
324
110
375
140
478
180
614
Boiler input - (gross) Maximum kW
Btu/hr x 1000
72.2
246
98.4
336
115.0
392
151.3
516
194.6
664
Boiler input (nett) - Maximum kW
Btu/hr x 1000
65.0
222
88.6
302
103.5
353
136.3
465
175.2
598
Boiler Output Minimum 80/60°C kW
Btu/hr x 1000
21.2
72
28.8
98
33.3
113
44.8
153
57.6
197
Boiler Output Minimum 50/30°C kW
Btu/hr x 1000
23.3
80
31.7
108
36.7
125
46.7
159
60.0
205
Water
Water Content litres 8 11
System design flow rate @ 20°C
∆t rise l/s
0.836 1.135 1.314 1.672 2.15
Water side pressure loss @ 20°C
∆t rise` mbar
32 52 72 134 221
System design flow rate @ 11°C
∆t rise l/s
1.5 2.1 2.4 3.0 3.9
Water side pressure loss @ 11°C
∆t rise mbar
96 176 244 442 731
Maximum water pressure barg 7
Gas
Gas flow rate natural gas (G20) - maximum m
3
/hr 6.88 9.375 10.956 14.42 18.541
Nominal inlet pressure natural gas (G20) - maximum mbar 20
Maximum gas inlet pressure natural gas (G20) mbar 25
Flue
Approx. flue gas volume @ 15°C - 9.3 - 9.8% CO2 @ N.T.P m
3
/hr 86.13 117.37 137.16 180.53 232.12
Approx. flue gas temperature @ 50/30°C °C 40 45 50 50
Approx. flue gas temperature @ 80/60°C °C 60 65 70 75
Connection
Pressure at flue outlet Pa 100
Water flow/return connections inches R2”
Gas inlet connection pipe thread size inches R1”
Electrics
Nominal flue diameter (I/D) mm 150
Electrical supply 230V 1Ph 50Hz
Power consumption - maximum modulation W 94.3 207
Start current Amp 0.54 0.6
Approx shipping weight kg 170 230
Noise emission @ 1m - maximum modulation MAX dB (A) 53 65