MAXXflo

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.

  • External heat exchanger allowing for virtually instant hot water production
  • Stainless steel storage tank in 200 or 300 litre capacities
  • 8 module options available between 30Kw and 120kW
  • Small footprint and flexible flue options allowing for easy installation
  • Innovative design generating 109% net efficiency in condensing mode
  • Variable speed pumps that regulate the system to improve efficiency and reduce unnecessary running costs
  • Suitable for room sealed or conventional flue
  • State of the art electronics with diagnostics for easy maintenance and management
  • Winner of the Queens Award for Enterprise: Innovation 2007
  • WRAS approved and ECA listed

Model Reference CWH 30/200 60/200 90/200 120/200
Input gross Hs min/max 6.7 - 31.1 kW 13.4 - 62.2 kW 20.1 - 93.3 kW 26.8 - 124.4 kW
Input net Hi min/max 6.0 - 28.0 kW 12.0 - 56.00 kW 18.0 - 84.0 kW 24.0 - 112.0 kW
Output (tank set point = 60ºC) min/max 6.5 - 30.5 kW 13.0 - 61.0 kW 19.5 - 91.6 kW 26.0 - 122.1 kW
Natural Gas, G31
Gas Consumption 2.98 m3/h 5.93 m3/h 8.89 m3/h 11.85 m3/h
Minimum Dynamic Gas Supply Pressure 18 mbar 18 mbar 18 mbar 18 mbar
Propane, G31
Gas Consumption 2.18 kg/h 4.35 kg/h 6.53 kg/h 8.71 kg/h
Minimum Dynamic Gas Supply Pressure 37 mbar 37 mbar 37 mbar 37 mbar
Efficiently (gross) 98% 98% 98% 98%
Efficiently (nett) 109% 109% 109% 109%
Standby Heat Loss 780 Mj per month
NOx level @ 0% 02 25ppm 25ppm 25ppm 25ppm
NOx level @ 0% 02 44mg/kWh 44mg/kWh 44mg/kWh 44mg/kWh
Noise level * 51dBA 51dBA 51dBA 51dBA
Ionisation current- max 6.0µA 6.0µA 6.0µA 6.0µA
Ionisation current- min 4.0µA 4.0µA 4.0µA 4.0µA
HSI resistance 1.0 - 1.4 kO 1.0 - 1.4 kO 1.0 - 1.4 kO 1.0 - 1.4 kO
Max recovery thru 50ºC 480 l/h 960 l/h 1440 l/h 1920 l/h
Max recovery thru 56ºC 429 l/h 856 l/h 12284 l/h 1712 l/h
Time to recover tank thru 50ºC rise
200 litre capacity 25 mins 13 mins 9 mins 7 mins
300 litre capacity 38 mins 19mins 13 mins 10 mins
Flue size (concentric) Internal/External 80/125 80/125 130/200 130/200
Flue size conventional) 80 80 130 130
Max flue run - concentric ** 14 12 14 14
Max flue run - conventional *** 50 20 50 40
Max flue static pressure 140 Pa 140 Pa 140 Pa 140 Pa
Inlet//Outlet connections 1½"BSP 1½"BSP 1½"BSP 1½"BSP
Return connection 1"BSP 1"BSP 1"BSP 1"BSP
Nominal operating water pressure 3.5 bar 3.5 bar 3.5 bar 3.5 bar
Maximum water pressure 6.0 bar 6.0 bar 6.0 bar 6.0 bar
Minimum water pressure 1.0 bar 1.0 bar 1.0 bar 1.0 bar
Gas connection (gas cock supplied) ¾ ¾ ¾ ¾
Electrical supply All model: 230/50V/Hz
Power consumption 170W 340W 510W 680W
Weight - empty (200 litre) 155 kg 170 kg 185 kg 200 kg
Weight - empty (300 litre) 165 kg 180 kg 195 kg 210 kg
Weight - Full (200 litre) 355 kg 370 kg 385 kg 400 kg
Weight - Full (300 litre) 465 kg 480 kg 495 kg 513 kg
Shipping weight (200 litre) 178 kg 193 kg 208 kg 213 kg
Shipping weight (300 litre) 188 kg 203 kg 218 kg 233 kg
Shipping depth 1040 mm 1040 mm 1040 mm 1040 mm
Shipping width 880 mm 880 mm 880 mm 880 mm
Shipping height (200 litre) 1653mm 1653mm 1653mm 1653mm
Shipping height (300 litre) 2077 mm 2077 mm 2077 mm 2077 mm

* Noise level measured at 2m from flue terminal

** Reduce flue length by 1.2m for 90º bend, 0.7m for 45º bend and 1.5m for condensate trap

*** Reduce flue length by 4m for 90º bend, 2m for 45º bend and 4m for condensate trap

Learn more about the MAXXflo by downloading product literature.

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