1. Catalogs
  2. Solfex
  3. MAXIFLO Multifuel
video corpo

MAXIFLO Multifuel

MAXIFLO Multifuel

MAXIFLO Multifuel

Product catalog summary
Overview: The MAXIFLO Multifuel is a stainless steel thermal storage unit designed to provide mains pressure hot water and assist space heating using renewable energy sources. It supports multiple energy inputs, including solar thermal and solid fuel appliances, and can be connected to both open vented and sealed system boilers.
Features & Benefits:
  • Manufactured in the UK with low standing heat loss.
  • Supports inputs from uncontrolled heat sources and provides mains pressure hot water.
  • Ensures no legionella risk and includes anti-scald protection through intelligent control.
  • No requirement for discharge pipe work under G3 regulations.
  • Accommodates multiple renewable energy input options with an oversized solar thermal coil for maximum heat transfer.
  • Smart, attractive white casing.
Technical Specifications:
  • Available models: STTS-250, STTS-300, STTS-400.
  • Height ranges from 1745 mm to 2030 mm, diameter from 550 mm to 630 mm.
  • Weight (empty) ranges from 40 kg to 59 kg, and weight (full) from 290 kg to 459 kg.
  • Capacity ranges from 250 litres to 400 litres.
  • Standing losses range from 2.14 kWhr/24hr to 2.85 kWhr/24hr.
  • Surface area of solar coil ranges from 1.31 m² to 1.42 m².
  • Dedicated solar volume ranges from 125 litres to 176 litres.
  • Flow rate at 75°C store temperature is 35 L/Min for all models.
  • Store max temperature is 85°C.
  • Cylinder warranty is 10 years, with 2 years for components and electronics.
Recommended SOLFEX Energy Systems Collector Field:
  • Flat Plate Solar Thermal Collector: 2 x FK250 for STTS-250, 2 x FK500 for STTS-300, 3 x FK500 for STTS-400.
  • Vacuum Tubes Solar Thermal Collector: 3 x CPC 6 for STTS-250, 4 x CPC 6 for STTS-300, 5 x CPC 6 for STTS-400.
Components and Connections:
  • Supplied components include a thermostat and immersion heater.
  • Optional extras include a header tank, ball valve, float, and overheat thermostat.
  • Various connections for open vent, solid fuel, domestic hot water, solar, and central heating flows and returns.
See more

Catalog excerpts

MAXIFLO Multifuel-1

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

 Open the catalog to page 1
MAXIFLO Multifuel-2

Appliance 1. Open vent - 22mm 2. Solid fuel overheat stat 3. Domestic hot water store sensor 4. Plate heat exchanger flow - 22mm 6. Solid fuel flow - 28mm comp 8. OV boiler flow - 28mm comp 10. Central heating flow - 22mm comp 11. Primary coil flow - 22mm comp (400 model - 28mm comp) 12. Store control stat Component kit supplied attached • Thermostat • Immersion heater 13. Primary coil return - 22mm comp (400 model - 28mm comp) 14. Central heating return - 22mm comp 15. OV boiler return - 28mm comp 17. Solid fuel return - 28 mm comp 18. Plate heat exchanger return - 22mm 19. Solar coil flow -...

 Open the catalog to page 2
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.