The MAXXflo from Andrews Water Heaters combines maximum performance with economic running costs. It is a former winner of the Queen's Award for Enterprise in Innovation and is often installed in large hotels, government buildings and office blocks.
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|Heat input (gross)||kW||31.1||62.2||93.3||124.4|
|Standby heat loss||mj/month||780||780||780||780|
|NOx emissions (0% 02)||mg/kWh||44||44||44||44|
|NOx emissions (0% 02)||ppm||25||25||25||25|
|ErP efficiency rating||A||A||A||A|
|Gas flow rate (natural gas)||m3/h||2.96||5.93||8.89||11.85|
|Gas flow rate (propane)||m3/h||
|Recovery rate at 50ºC rise||Litre/hr||480||960||1440||1920|
|Recovery rate at 56ºC rise||Litre/hr||429||857||1286||1714|
|Operating pressure (unvented)||bar||3.5||3.5||3.5||3.5|
|Minimum working pressure||bar||1||1||1||1|
|Electrical power consumption||W||170||340||510||680|
|Weight full (200 litre)||kg||355||370||385||400|
|Weight full (300 litre)||kg||465||480||495||513|
|Weight empty (200 litre)||kg||155||170||185||200|
|Weight empty (300 litre)||kg||165||180||195||210|
|Max. flue run (concentric)||m||14||12||14||14|
|Max. flue run (conventional)||m||50||20||50||40|
|Front service clearance||mm||1000||1000||1000||1000|
|Side service clearance||mm||300||300||300||300|
|Clearance above heater||mm||500||500||500||500|
Learn more about the MAXXflo by downloading product literature. If you can't find the literature you are looking for, or you have any questions, please contact your Area Sales Manager who will be able to help.
Find out more about the MAXXflo in action by reading our case studies.
Download your Building Information Modeling (BIM) object(s) for this product. If you can’t find the BIM file you require, or you have any questions, please contact your Area Sales Manager who will be able to help.
Download CAD files for this product using the links below. To access CAD files you will need the correct software installed to allow you to open .dwg files such as AutoCAD. If you can't find the CAD file you require, or you have any questions, please contact your Area Sales Manager who will be able to help.
Feel free to call our technical helpline on 0345 070 1055 if you need any support.
Master Board Blocking Codes
|E09||Control Error: Internal RAM location not correct|
|E12||Control Error: The incorrect parameters are programmed in the slave board|
|E13, E15||Control Error: A references measurement indicated that the AD-circuit is defective, too low|
|E14, E16||Control Error: A references measurement indicated that the AD-circuit is defective, too high|
|E18||Control Error: Internal RAM|
|E19||Control Error: Not able to read parameters|
|E20||No slave board present|
|E22||Power Fault: The 50Hz has too large deviation|
|E60||Tank sensor opened circuit|
|E65||Return sensor opened circuit|
|E70||Tank sensor shorted|
|E75||Return sensor shorted|
Slave Board Blocking Codes
|E0||Read Error: Not able to read stored parameters|
|E28, E29, E30, E31||Control error: Reference measurements indicates that there is an error in the AD circuit|
|E33||Flame detected when gas valve was closed|
|E41||Phase Error: Live and neutral reversed|
|E42||Phase Error: Too much deviation in the supply voltage frequency|
|E44||Control Error: Poor communication between the two processors|
|E47||Return sensor open circuit|
|E48||Flow sensor open circuit|
|E63||Return sensor short circuit|
|E64||Flow sensor short circuit|
|E78||Reset Error: Too many user resets|
Slave Board Lockout Codes
|A01||Three Failed Ignitions: After three ignitions, there was still no flame detected|
|A02||Overheat Stat Failure: No water flow conditions, the flow sensor is not detecting a temperature increase during operation|
|A03||The two flow sensors have too greater temperature differential between them, 10Â°C for more than 60 seconds|
|A05||Gas Valve Relay Error: The gas valve relay is not switching correctly|
|A06||Safety Relay Error: The safety relay is not switching correctly|
|A08||Fan Error: The fan is not reaching its target value or speed for more than 60 seconds|
|A09||Control Error: Internal storage location|
|A10||The contents of the stored parameters are not correct|
|A11||Flow Temperature: Flow temperature went above 95Â°C|
|A12||Control Error: The stored contents inside the control are not matching the software version|
|A14, A15, A16, A17, A19||Control Error: Internal storage location|
|A20||Flame detection after gas valve is closed. Flame still present 10 seconds after the gas valve is closed|
|A21||Flame detected before opening of the gas valve during the start up sequence|
|A24||Too many flame failures: When the flame fails three times within on burn cycle|
The Energy Related Products Directive (ErP) has applied to all domestic and commercial heating and hot water products through Europe since September 2015.
From 26th September 2018 any water heater sold must have an efficiency/NOx output rating of C or above. All of our products are compliant the new ErP legislation. Read more about our product range, and legislation changes here.