Big Book of Hamworthy Products and Services

Boiler Product selector Gas fired pre-mix boiler Power flame boiler Condensing / Non-condensing Condensing Condensing Condensing Condensing Condensing Condensing Condensing Non- condensing Non- condensing Wall mounted or floor standing Wall Floor Floor Floor Floor Floor Floor Floor Floor Minimum model output @50/30°C (kW) 43 97 70 98 127 75 530 (@ 80/60°C) 530 (@ 80/60°C) 440 (@ 80/60°C) Maximum model output @50/30°C (kW) 146 762 180 1,047 478* 320* 3,000 (@ 80/60°C) 10,000 (@ 80/60°C) 580 (@ 80/60°C) No of models 7 15 5 18 12 7 12 19 3 Max water pressure (bar) 4 10 6 6 6 5 6 6 6 SS OV † SS SS OV SS OV SS SS SS OV SS OV SS OV SS OV RS OF † RS OF OF OF OF RS OF OF OF OF OF Flue options B23 • • • • • • • • • C13 • • C33 • • C53 • • Fuel Nat Gas • • • • • • • • • LPG • • # • • • Oil/ Biofuel • • • Dual fuel • • • Heat exchanger material Stainless steel Stainless steel Cast iron Aluminium Stainless steel Stainless steel Steel Steel Steel Turndown modulation ratio (max) 5:1 15:1 3:1 15:1 5:1 3.5:1 2.5:1 4:1 3:1 Stratton mk2 Wessex ModuMax mk3 Purewell Variheat mk2 Upton Varmax Ansty Melbury C Melbury HE Ensbury pg 14 pg 16 pg 20 pg 22 pg 26 pg 30 pg 34 pg 38 pg 42 When it comes to commercial boilers there isn’t a ‘one size fits all’ solution. We have over 98 boilers for you to choose from. Use the chart below to select the boiler that best fits your requirements and building’s heat load. † Key: SS = Sealed system OV = Open vented system RS = Room sealed flue OF = Open flue *Available in dual models with double the output. # LPG/Air for Channel Islands. 6 UPDATED

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