Hamworthy Purewell Variheat mk2 70c Installation, Commissioning And Servicing Instructions page 50

Component
Straight tube ø150mm maximum length (m)
45° bend ø150mm Equivalent tube length (m)
90° bend ø150mm Equivalent tube length (m)
Figure C1.1 - Flue Resistance
Figure C1.2 - Open (Natural Draught) B23 Flue System
HAMWORTHY HEATING LTD
Model
70c 95c
131 114
1.6 1.7
2.1 2.2
45
PUREWELL Variheat mk2
110c 140c 180c
114 79 57
1.7 1.8 1.8
2.2 2.3 2.3
218612 A03