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Potterton Powermax HE

gas boiler

 

The Potterton Powermax HE combines a condensing stainless steel heat engine, unvented Duplex stainless steel domestic hot water cylinder, pump and programmer in a single package - virtually 'a system in a box'. Installation is reduced to just seven pipework connections plus the flue, which is available in a wide range of options for freedom of siting the boiler and the flue terminal.

High performance central heating and hot water in one box. For a complete installation just add the flue kit, radiators, valves and pipework.

 

  • Three models to suit the majority of situations, serving up to 2 bathrooms, an en-suite, a cloakroom and a kitchen
  • DHW flowrates up to 48 l/min - filling a bath in around 5 minutes
  • Operates at water pressures as low as 1.0 bar
  • Rapid recovery of store (15-20 mins)
  • Output modulating down to 6.7 kW for maximum efficiencyv
  • Automatic by-pass for systems with thermostatic radiator valves
  • Integrated and pre-wired 7 day 3 period electronic programmer with battery back up
  • On-board diagnostic functions with LED display
  • Built-in frost protection
  • User selectable hot water store temperature
  • Boiler heat exchanger and storage cylinder in high quality stainless steel
  • Cylinder guaranteed 10 years
  • Optional back-up electric immersion heater
  • Comprehensive concentric and twin pipe flue options

 

 

85 litre

115 litre

150 litre

Price

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Powermax Units 85 litre 115 litre 150 litre
Max Heat Input kW 25.8 25.8 25.8
Max Output to CH (non condensing) kW 22.6 22.6 22.6
Max Output to CH (condensing) kW 24.0 24.0 24.0
Min Output to CH (non condensing) kW 6.7 6.7 6.7
Min Output to CH (condensing) kW 7.6 7.6 7.6
Automatic modulating of CH heat output Yes Yes Yes
Case height mm 1110 1270 1460
Case width mm 550 550 550
Case depth mm 600 600 600
Built in programmer 2-channel, pre=programmed, back lit display, battery back-up, separate times for HW & CH, advance button, CH off selector
User adjustable DHW temperature Yes Yes Yes
LED status/fault display Yes Yes Yes
Seasonal Efficiency (SEDBUK) Rating %/Class 90.5/A 90.5/A 90.6/A
Suitable for unventilated compartments No No No
Min effective high and low ventilation to room cm2 80 80 80
Min effective high and low ventilation to outside cm2 40 40 40
Min installation clearance above mm 250 250 250
Min installation clearance front mm 75 75 75
NOx class 5 5 5
Max gas rate m3/h 2.55 2.55 2.55
Inlet pressure mbar 20 20 20
Fuel Natural Gas
Secondary store capacity litres 85 115 150
Secondary expansion vessel 18 litre, pre-charge 2.5 - 2.7 bar (supplied separately)
Automatic bypass Yes Yes Yes
DHW temperature C 45 to 65 45 to 65 45 to 65
DHW flowrate 2 l/min 30 36 48
Working pressure - Primary bar 09 - 2.5 0.9 - 2.5 0.9 - 2.5
Working pressure - DHW bar 1.0 - 2.5 1.0 - 2.5 1.0 - 2.5
Working pressure - Mains supply bar 1.0 - 16.0 1.0 - 16.0 1.0 - 16.0
Pressure relief valve setting bar 3.0 3.0 3.0
Temperature/press. Relief Valve Pre-set 95C, 10.0 bar opening
Lift weight top section kg 40 40 40
Lift weight bottom section kg 40 41 43
Full weight kg 175 208 246
Gas mm 22- compression
CH flow & return mm 22- compression
DHW inlet & outlet mm 22- tube end
TPRV mm 22- compression from tundish
Condensate outlet Flexible pipe 500mm long, (fits 21.5mm PP overflow systems)
Inlet control group mbar 22mm compression inlet & outlet set pressure 2.5 bar, PRV set 8.0 bar
Electric supply V-Hz 230-50 230-50 230-50
Power consumption W 96 96 96
Noise level dBA 48 48 48
Optional immersion heater 3 kW at 240V, BEAB approved
CH frost protection Yes Yes Yes
Concentric flue size mm 100 100 100
Twin pipe flue size mm 60 60 60
 


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