MAXI series has shown class-leading operational durability for commercial hot water systems through the last 50 years. MAXI has been constructed with EVERLAST™ high-alloy stainless steel in combination with ULTRAWELD™ technology for optimal corrosion resistance. MAXI series can be modified according to customer requirements.

MAXI XPRESS — MX boasts twice the available immersion heater capacity as the standard, is heated either with the integrated electric INCOTEC immersion heaters, or via an external energy source and the TURBOSYSTEM with plate heat exchanger (optional capacity) and double sets of pumps for extra operational safety. The electric immersion heaters has optional effect 5–30 kW, 230–400 V + N 3-phase, and is thermostat controlled 60–90 °C in three steps with separate safety thermostats. Contactors are not required and the support cable is connected directly to the central.

G3 Kits and expansion vessel as standard

Other sizes and specifications are available to order.

• Extreme operational durability with el. heaters w/o contactors
• 10 bar design pressure and class-leading corrosion resistance


NANOPUR – Class-leading insulation (300/400 L)
ISOFLEX+VIP – Class-leading insulation (600/1000 L)
ULTRAWELD – Superior corrosion resistance
INCOTEC – High durability in hard water
MAXTEMP – Solar / hot water connection
SOLAR-READY – Separate solar connection


Mixing valve – See separate commercial add-ons
Thermostats – Adjustable 60-90°C – Preset 75°C
Safety valve – TP 9 bar/99°C – 3/4” to drain
Flow/ret. conn. – 2 x 1-½” female BSP threads
Other connections – 4 x ¾” female BSP threads