With Mi-T-M Heater Inside Patented EMF System


Max pressure (psi/bar)2500/1723600/2482200/152
Water flow (gpm/lpm)3.3/12.64.8/182.7/10
Outlet water temperature66˚C/150˚ rise above inlet ambient (93˚C/200˚F maximum)
Horse power/displacement (hp/cc)HY7/212HDH86G2/4203kW/220V
Fuel tank capacity (L)3.65.5-
Pump model3WZ-1507A3WZ-1807A3WZ-1507C
Burner fuel typePetrolDieselElectric
Burner fuel capacity (L)151919
Burner fuel consumption (L p/h)
EMF systemPatented electro magnetic firing (EMF) system
Heat exchangerVertical, top-fired, dual spiral coil
Fuel filter/water separatorSpin on (10 micron) filter/E-Z water drain
Pressure switchShut-off burner fuel supply upon trigger release
High limit switchShut-off burner fuel supply when outlet water temperature exceeds 200ºF/93ºC
Pressure safety reliefRelieves excess system pressure
Pump thermal protectionProtects the pump from over heating when in bypass mode, actives at 60ºC/140ºC
Detergent injectorLow pressure detergent injection
Dimensions (cm) L x W x H96 x 76 x 112110 x 75 x 110108 x 78 x 110
Shipping weight NW/GW110/130 kgs150/175 kgs135/155 kgs
PRICER95 000R125 000POR


  • Heavy-duty grade direct drive brass manifold triplex pump, adjustable pressure; installed with pressure switch, thermal protection and safety relief valve
  • Hot water grade professional trigger gun, insulated dual lance, fixed nozzle, hot water pressure hose
  • Powder-coated heavy duty trolley frame
  • Mi-T-M heat exchange unit with patent EMF systems, designed and manufactured in the USA


  • Designed for easy maintenance of the ignition system. With all the ignition components located at the top of the firing chamber assembly there is no need to crawl under the unit for repairs, which is the case with most designs in the industry.
  • The system has a convenient sight glass so that the functioning of the electrodes and EFM system is always visible.
  • Any adjustment or maintenance of the firing system is easily performed by removing three bolts!


The combustion air flows through the coils assembly X 3

First Pass
  • The air is forced between the outside wrap and the coil (yellow); this cool air passes through the chamber serving two funtions.
  • This air is preheated before it enters the firing chamber
Second Pass
  • The air from the first pass chamber is forced into the ignition chamber (red circle); during ignition the air and flame are forced down (red arrows) into the coil assembly raising the temperature of the water passing through the coil
Third Pass
  • The air is forced down the fire chamber in the second pass to the bottom of the chamber and is directed back up between the coil wrap (white arrows); the final step in the process is the air which is exhausted out of the dual chimney system
  • The Triple Air Flow System is designed to keep the heated air in the chamber longer to utilise the maximum amount of heat in the air flow; this design is recognised as one of the most efficient burning assemblies in the industry