MAXIFLO Multifuel
MAXIFLO Multifuel
The Stainless Steel Thermal Storage unit providing mains pressure hot water & space heating assist from renewable energy sources to an open vented heating circuit.
The MAXIFLO Multifuel stainless steel thermal storage unit will allow multiple renewable energy sources such as solar thermal & solid fuel burning appliances to be connected. Open vented connections enable a boiler to be connected, or through a primary coil a sealed system boiler may also be connected.
Fresh legionella free hot water is delivered at up to 35 litres per minute through a highly efficient plate heat exchanger which is controlled through an intelligent electronic temperature management system.
Features & Benefits of the MAXIFLO Multifuel
- Manufactured in the UK
- Market leading low standing heat loss
- Inputs from uncontrolled heat sources
- Mains pressure hot water
- No legionella risk
- Anti-scald protection through intelligent control
- No requirement for discharge pipe work under G3
- Multiple renewable energy input options
- Oversized solar thermal coil for maximum heat transfer
- Dedicated solar volume allows collector field suitability
- Smart attractive white cased unit

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Component kit supplied attached
- Thermostat
- Immersion heater
Optional extra components
- Header tank
- Ball valve
- Float
- Overheat thermostat
Technical Specification
Description | STTS-250 | STTS-350 | STTS-400 | |
Height | mm | 1745 | 1990 | 2030 |
Diameter | mm | 550 | 550 | 630 |
Weight (empty) | kg | 40 | 46 | 59 |
Weight (full) | kg | 290 | 346 | 459 |
Capacity | litres | 250 | 300 | 400 |
Standing losses | kWhr/24hr | 2.14 | 2.36 | 2.85 |
Surface area of solar coil |
m²
|
1.31
|
1.31
|
1.42
|
Dedicated solar volume |
litres
|
125
|
125
|
176
|
Flow rate @75 degree store temp | L/min | 35 | 35 | 35 |
Store max temp | °C | 85 | 85 | 85 |
Cylinder warranty | 10 Years | 10 Years | 10 Years | |
Cylnder components & electronics | 2 Years | 2 Years | 2 Years |
Recommended SOLFEX energy systems Collector Field
Description | STTS-250 | STTS-350 | STTS-400 | |
Flat plate solar thermal collector | 2 x FK250 | 2 x FK500 | 3 x FK500 | |
Vaccum tubes solar thermal collector | 3 x CPC 6 | 4 x CPC 6 | 5 x CPC 6 |

MAXIFLO Multifuel
- MAXIFLO data sheet - pdf