Promax System

Designed for properties with high hot water demands, the Promax System from Potterton is a fully modulating and highly efficient single box solution. 

Contact your BDM
Suitable for

Social Housing

New Builds

Single boiler output
12kW, 15kW, 18kW, 24kW & 32kW

Flueing options
Up to 20 metres

Quicker installation time
Pre-plumbing jig


Developed with robust hydraulic connections, the Promax System boiler offers reliability and quality as standard, as well as an exceptional SAP rating.

The Promax System is available in outputs of 12kW, 15kW, 18kW, 24kW and 32kW so there is a model to suit most property sizes. With flueing options of up to 20m it allows for greater flexibility of siting, making the Potterton Promax System ideal for a  variety of different newbuild projects and social housing projects and comes with full support.

To register a Potterton System boiler online, click here

Terms and conditions apply.

Please note: Warranty and purchasing information on this site applies to the UK only. For information on how to buy these products in the Republic of Ireland, please visit Baxi Potterton Myson.

Get in touch
  • 12kW, 15kW, 18kW, 24kW, 32kW models available - a model to suit most sizes of property
  • N0x Class 5 - best in class
  • Flueing options of up to 20m - offering flexibility for a variety of different housing project
  • Pre-plumbing jig -  saving time on installation.
  • Compatible with Megaflo Eco Solar Cylinder and Santon Premier Plus Solar cylinder

View product specification

When clicked this will open the product specification in PDF format.

Potterton Promax System


Units  12 15 18 24  32k 
Sales code 7219457 7219458 7219459 7219460  7219461 

Controls 

Concealed user controls    Yes  Yes   Yes   Yes    Yes   
Operating mode selector switch with reset    Yes   Yes   Yes   Yes    Yes   
User adjustable CH temperature    Yes   Yes   Yes   Yes    Yes   
LED operating status display    Yes   Yes   Yes   Yes    Yes   

Gas

Gas (natural gas/LPG) NG NG NG NG  NG 
Inlet supply pressure mbar 20  20  20  20  20 
Maximum gas rate  m3/hr  1.31 1.69  1.95  2.61  3.48 
Heat input central heating (CH)  kW Max Gross (QnHs)  13.8 17.1 20.5  27.4  36.4 
kW Min Gross (QnHs)  4.4 4.0 4.5 7.8  10.8 
Heat output CH non-condensing  kW Max (Pn)  12.4 15.4 18.5 24.7  36.4 
kW min (Pn)  3.9 3.9 4.2 6.8  9.4 
Heat output CH condensing  kW max (Pnc)  13 16.2 19.4 25.9  34.4 
kW min (Pnc)  4.2 4.2 4.5 7.4  10.2 
SAP 2009/2012 annual efficiency (PCDB/SEDBUK)  89.0 89.0  89.0  89.0  89.0 
NOx class   

ErP product information 

NOx  mg/kWh  15 25 29 20  24 
Sound power level, indoors  LWA DB  55 52  53  58  54 
Space heating efficiency class   
EcoHomes  Credits  3

Electrical 

Electrical supply  Volts/Hz  230/50  230/50  230/50  230/50   230/50  
Permanent live required  Yes  Yes  Yes  Yes   Yes  
Power consumption  Watts  110 95 105 115  125 
External fuse rating  Amps 
Boiler IPX rating (electrical protection)    IPX5D  IPX5D  IPX5D  IPX5D   IPX5D  
Integral 'boiler only' frost thermostat    Yes  Yes  Yes  Yes  Yes 

Mechanical 

Wall mounting jig    Yes   Yes   Yes   Yes Yes 
Isolating valves    Yes   Yes   Yes   Yes  Yes 
Gas supply connection  mm  22  22  22  22  22 
Central heating connections  mm  22  22  22  22  22 
Condensate drain connection  mm  21.5 21.5 21.5 21.5  21.5 
Safety discharge connection mm  15 15 15 15  15 

Hydraulic 

Safety discharge pressure  bar 
Integral automatic bypass    Yes   Yes   Yes   Yes  Yes 
Integral expansion vessel capacity  litres 
Maximum capacity of CH system  litres  125  125  125  125  125 
Compartment ventilation required   No  No  No  No   No  
24 hour pump exercise   Yes   Yes   Yes   Yes    Yes   
Pump overrun    Yes   Yes   Yes   Yes    Yes   

Concentric flue systems 

 Concentric flue diameters mm  60/100 and 80/125      
Standard horizontal flue kit length (ø60/100)  mm  685 685 685 685  685 
Max equiv length vertical (ø60/100)  10 10 10 10  10 
Max equiv length vertical (ø80/125)  20 20 20 20  20 
Max equiv length horizontal (ø60/100) 10 10 10 10  10 
Max equiv length horizontal (ø80/125)  20  20  20  20  20 

Twin flue system 

Twin pipe flue Diameters  mm  80/80 80/80 80/80 80/80  80/80 
Maximum equivalent vertical length 15 15 15 15  15 
Maximum equivalent horizontal length m 15 15 15 15  15 

Weights 

Gross packaged boiler weight 

kg  41.5 41.5 41.5 43  43.5 
Max installation lift weight  kg  36.4 36.4 36.4 37.9  38.4 
Packaged boiler dimensions (WxHxDxSCxUCxLCxFC)   450mm x 780mm x 345mm x 5mm x 175mm (300mm 80/125 flue) x 150mm x 5mm / 450mm for servicing 

The following accessories and controls are compatible with the Potterton Promax System. To find out more, visit our Accessories and Controls page.

  • EP1 Programmer
  • EP2 Programmer
  • Filling loop kit
  • Stand off kit (facilitates vertical pipe runs behind boiler)
  • Multifit gas saver (natural gas)
  • Multifit (gas saver) expansion vessel kit
  • Gas saver - stand off kit
  • Multifit condensate trace heating kit 1m
  • Multifit condensate trace heating kit 2m
  • Multifit condensate trace heating kit 3m
  • Multifit condensate trace heating kit 5m
  • Multifit External Boiler Discharge Pump (PRV and condensate)
  • Terminal guard ∅ 60/100
  • Stainless steel PDK guard ∅ 60/100 - air intake S/S

Promax System literature

Potterton Promax Range Guide updated 17/05/2017 (15.43MB) Tenants leaflet example updated 30/06/2017 (3.90MB) Promax system user guide updated 21/07/2016 (1.40MB) Promax system installation and servicing manual updated 19/04/2017 (5.96MB)

Promax System ErP labels

Promax system ErP label updated 08/04/2016 (0.14MB) Product fiche Potterton Promax System updated 09/09/2015 (0.11MB)

Support from Potterton

Totally dependable.