Heat Pumps

Heat Pumps

Heat Pump

Kroll was asked to project manage an air-water Viessmann heat pump installation at Preston, Victoria.  The legacy radiator network was deemed to suit a heat pump. Installation was performed by ADH Plumbing of Essendon. Technical support provided by Viessmann engineers and Kroll Heaters.

Viessmann Vitocal air-water Heat Pump

Kroll in 2024 will be distributing the Vitocal Heat Pumps manufactured in Germany by Viessmann. These air to water heat pumps are ideal for domestic:

  • Floor Heating
  • Floor Cooling
  • Off Grid Users seeking high electrical efficiency

Note also that the Vitocal uses R290 [propane] refrigerant which has a very low GWP or global warming potential compared to R32 refrigerant, for example. In other words, far more eco-friendly than other refrigerants. R290 is also over 30% more energy efficient than R32 heat pumps. [Sources: ATMO Europe hydrocarbons21.com & Purdue University]

 

Go to Viessmann Australia’s new website at https://www.viessmann.com.au/

Arikazan’s Hybrid Heat Pump Wood Pellet Boiler ‘Boltero’

  • Kroll in 2024 will be distributing the Boltero Hybrid heater Cooler.

The Boltero is ideal for domestic:

  • Floor Heating
  • Floor Cooling
  • Off Grid Users seeking high electrical efficiency

Boltero  is a Hybrid wood pellet 7 – 30kW heater & cooling 1 – 6kW.

Go to  https://www.youtube.com/watch?v=SOUPH5mkR3Y

         

Wood fired Hydronic Heating for Off Grid

Look at the detail that’s possible

Off Grid people: Flow rates, pressure drops, tubing length, location of manifolds all supplied by Kroll’s Wood fired Hydronic Heating. Over twenty years of practice helps Installers and Builders & Owners to cooperate and complete projects. It’s all part of the Kroll process. Wood Log Heating and Wood Pellet Heating is possible. Check https://kroll-heaters.com.au/waste-oil-boilers/wood-boiler-kk-series/

Efficiency

The Caria Series is Certified to EN303-5 as over 93% efficiency

The Ventum series is Certified by EN303-5 over 91% efficiency

Power consumption

The Ventum KK30 and KK40 uses 200 watts or less.

The Caria CP23 and CP40 uses 100 watts and 120 watts respectively.

Examples of Cost

The KK30 System is $16,250 + GST. Remember: the System is the VG30, 1000l thermal storage tank, LK810 charge valve, LK519 wood safety, LK 924 valve, an air/dirt remover plus an Auto Fill valve

The KK40 System is $22,570 + GST. Remember: the System is the VG40, two by 1000l thermal storage tanks, LK810 charge valve, LK519 wood safety, LK 924 valve, an air/dirt remover plus an Auto Fill valve

The CP23 Caria Wood Pellet Boiler is $11,490 + GST

The CP40 Caria Wood Pellet Boiler is $15,548 + GST

Heat Loss Calculations designed by the CSIRO

And also https://kroll-heaters.com.au/waste-oil-boilers/caria-series-wood-pellet-boiler/

 Wood Fired Hydronic Heating

Bill Of Material or BOM

Piping Design

Heat Loss Calculations designed by the CSIRO

 

Wood Fired Hydronic Heating

 

 

 

 

More projects, see https://kroll-heaters.com.au/photo-gallery/

More suppliers & partners see https://www.krollit.com/products/waste-oil-burner-emb20

https://www.arikazan.com.tr/en/

https://www.kroll.de/service/internationale-handelspartner/

Waste Oil Workshop Heaters

WASTE OIL WORKSHOP HEATERS AND BURNERS

Heating with waste oil or used oils can be an extremely smart choice for space heating and/or floor heating in domestic and commercial applications. If your farm or workplace produces used oil why not get your heat for minimal cost. The waste oil can be used to heat up your workshop heating using the SZ furnace or the 52kW Kroll Kozy. The Kroll Kozy is a European made, drip-feed, manual start with a 90 litre WO fuel tank and puts out between 30kW and 50kW of warmth producing 5,500 cubic metres of air per hour. Fully AS/NZS 3100:2022 compliant, RCM certified for electrical safety, for 240vac 50Hertz.

https://www.youtube.com/shorts/TKCWCfx-nYY

The New Kroll Kozy

 

Your Waste Oil Heaters and Heating Solutions

Waste oil heating and waste oil burning is Kroll core business.
This means the precision burning of waste oils, used or unused automotive or vegetable oils for domestic or commercial heating. Space heating with waste oil heaters and hydronic heating from recycled waste & used oils is what we do for you. Commercial heating, home heating and hydronic design services are available. Recently wood gasification hydronic boilers have been available as well. So, waste oil and waste wood!

Kroll can provide the hydronic solution for your floor heating or hydronic radiator heating or a combination of the two.

Kroll fan coil units convert hot water into warm air similar to a how car radiator uses a fan to coil the engine water. We use the German made EMB burners to burn the oil. These are available in 20 kW power output up to 250 kW if required.

The powerplant is the German made EMB series burners, available from 20 kW to 250 kW

https://kroll-heaters.com.au/waste-oil-burners/waste-oil-burners/

German made Waste Oil Burner Gun

The German made EMB Series waste oil burner provides a broad range of power outputs.

The operation sequence pumps fuel out of the special Kroll day tank and into the burner tank. A float switch controls the level inside the burner tank and supplies power to an oil pump on the day tank. Another float switch (overflow protection) serves as a limiter, which switches to fault if the tank is overfilled.

WASTE OIL BURNER

The operation sequence pumps fuel out of the special Kroll day tank and into the burner tank. A float switch controls the level inside the burner tank and supplies power to an oil pump on the day tank. Another float switch (overflow protection) serves as a limiter, which switches to fault if the tank is overfilled.

A thermostat sets the oil temperature in the burner pre-heater tank and starts the burner when the set point temperature is reached.

Also, the automatic burner control system monitors the operation of the burner and provides diagnostics to the user. A special nozzle aspirates and finely atomises the fuel using the compressed air flowing into the nozzle[s]. Therefore, the compressed air serves as primary air for the combustion process.

The burner blower supplies the secondary air, which mixes with the atomised spray at the baffle plate. This ensures full combustion and operational reliability.

Also, at an oil temperature in excess of 150° C, the safety switch automatically de-energises the burner. The Siemens controller displays diagnostics. These burners mount to air furnaces like the Kroll SZ series or heat water in a hydronic boiler [water heater]. Talk to Kroll about your heating needs and hydronic design for domestic and industrial applications. Off grid users take note!

See https://kroll-heaters.com.au/waste-oil-burners/waste-oil-burners/

See https://www.krollit.com/products/waste-oil-burner-emb20

More Operation

The operation sequence pumps fuel out of the special Kroll day tank and into the burner tank. A float switch controls the level inside the burner tank and supplies power to an oil pump on the day tank. Another float switch (overflow protection) serves as a limiter, which switches to fault if someone overfills the tank.

A thermostat sets the oil temperature in the burner pre-heater tank and starts the burner when the set point temperature is reached.

Also, the automatic burner control system monitors the operation of the burner and provides diagnostics to the user. A special nozzle aspirates and finely atomises the fuel using the compressed air flowing into the nozzles. Therefore, the compressed air serves as primary air for the combustion process.

The burner blower supplies the secondary air, which mixes with the atomised spray at the baffle plate. This ensures full combustion and operational reliability.

Also, at an oil temperature in excess of 150° C, the safety switch automatically de-energises the burner. The Siemens controller displays diagnostics. These burners mount to air furnaces like the Kroll SZ series or heat water in a hydronic boiler [water heater]. Kroll can help with your heating needs and hydronic design for domestic and industrial applications. Off grid users take note!

 

 

The Caria Wood Pellet Boiler Examination

The Caria Examination

A Caria CP40 40kW fully automatic hydronic wood pellet boiler has been installed in country Victoria. After initial firmware updates to sort out a pellet feed issue, the CP40 Pellet Boiler is functioning correctly. Of course the automatic ignition, self cleaning features and minimal maintenance is assisting the owner greatly.

The CP40 wood pellet boiler is charging 2000l of water storage to 77C. A great feature of the CP40 operating system is the ability to tweak parameters remotely, an essential thing for a complex machine in a remote location.

Performance Data

See some of the power and temperature information –   https://kroll-heaters.com.au/wp-content/uploads/2026/07/Robs-CP40-shutting-off-at-77C-Upper-sensor.pdf.

 

Diagnosis

Every parameter is configurable remotely. This is very useful to speed things up or down, vary boiler max temperature, vary maximum power, adjust upper and lower buffer parameters. The operation mode [running, ignition, supervision and halt phases are displayed]. The boiler power, flame size, pellet feed rate, flue gas temperature and boiler temperature are displayed in real time. The alarm register is there to be examined 24 by 7.

See https://kroll-heaters.com.au/wp-content/uploads/2026/07/Robs-Display.jpg

Wood fired Hydronic Heating

Look at the detail that’s possible

Flow rates, pressure drops, tubing length, location of manifolds all supplied by Kroll’s Wood fired Hydronic Heating. Over twenty years of practice helps Installers and Builders & Owners to cooperate and complete projects. It’s all part of the Kroll process. Highly Efficient options VG Ventum wood log and CP Caria Wood Pellet options, both over 91% efficient. Check https://kroll-heaters.com.au/waste-oil-boilers/wood-boiler-kk-series/

Examples of Cost

The KK30 System is $16,250 + GST. Remember: the System is the VG30, 1000l thermal storage tank, LK810 charge valve, LK519 wood safety, LK 924 valve, an air/dirt remover plus an Auto Fill valve

The KK40 System is $22,570 + GST. Remember: the System is the VG40, two by 1000l thermal storage tank, LK810 charge valve, LK519 wood safety, LK 924 valve, an air/dirt remover plus an Auto Fill valve

The CP23 Caria Wood Pellet Boiler is $11,490 + GST

The CP40 Caria Wood Pellet Boiler is $15,548 + GST

Heat Loss Calculations designed by the CSIRO

And also https://kroll-heaters.com.au/waste-oil-boilers/caria-series-wood-pellet-boiler/

 Wood Fired Hydronic Heating

Bill Of Material or BOM

Piping Design

Heat Loss Calculations designed by the CSIRO

 

Wood Fired Hydronic Heating

 

 

 

 

More projects, see https://kroll-heaters.com.au/photo-gallery/

More suppliers & partners see https://www.krollit.com/products/waste-oil-burner-emb20

https://www.arikazan.com.tr/en/

https://www.kroll.de/service/internationale-handelspartner/