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Boiler advice
The current trend with modern commercial condensing boilers is for smaller water volume (and therefore size of boiler) and circulating water past heat exchanger. Obviously this creates possible problems due to the larger numbers of parts (pumps )etc but it saves on space.
Anyway I have recently been shown (in advance of launch) a new "old fashioned" style boiler with what seems to be impressive technical specs (please see below)
I just wanted to know whether anyone felt that the modern boiler design was better for any other reasons other than size? Efficiency of the model below seems just as good but I am sure there must be a catch.
120KW Power (in same size as 40kw "old style" boiler)
108% gross efficiency (98% net)
NO minimum flow rate, meaning no secondary circulation pumps and less electrical consumption
NO minimum return temperature
Mixed temperature returns need no additional equipment as just plumbed straight into water tank.
12 year guarantee longest in the industry
Cascades are done in parallel not serial, meaning no computers or other equipment is required.
Dirt in system settles in bottom of tank meaning boilers can be connected to old heating systems without any modifications.
NOx emissions less than 16 ppm
Noise less than 35db at maximum output
Single phase electricity on all models saving further electricity
Built in building communications and remote operation on electronic control panel.
Modulating burner - 5:1 turn down ratio
Pre-mix burner
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Linear Mode
