Modulex Condensing Boilers
Modulex Condensing Hot Water Heaters are available for both indoor and outdoor installations with unique patented features such as their unique multi-burner design and controllers which provide built in redundancy. The design of the boiler maximises efficiency through condensation of the flue gasses and minimises the effects on the environment. The combination of pre-mixed radiating combustion with high turn down ratios produces unparalleled efficiency throughout the operating range of the Modulex Condensing Hot Water Heater.
Key features of the Modulex Condensing Hot Water Heater include:
- High turndown ratio of 39:1. This provides significant energy savings, particularly for part load or low load requirements. It also stops boiler cycling and contributes to its very quiet operation.
- Variable Water Flow rate. Allows the boiler to operate at a constant 20°ΔT – maintaining the boiler at the most efficient duty point.
- Small space saving footprint. This makes it easy to install in plant rooms where floor space is at a premium.
- Able to be supplied as dismantled. When needing to achieve installation in tight plant rooms or inaccessible areas, this feature can enable much better access and often saves significant costs involved in placing equipment via a crane from outside the building.
- Multi burner construction. If one burner requires maintenance, the other burners can continue to operate, providing built-in redundancy.
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High efficiency and built-in redundancy in a compact unit
Quick overview of Modulex key features
Modulex demo at ARBS 2016
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IHG, who operate InterContinental, Crowne Plaza and Holiday Inn Hotel brands, have been using the expertise of Automatic Heating since 2009.
Crowne Plaza Melbourne installed 3 x 700 kW and 1 x 100 kW Modulex Condensing boilers to replace our older Raypak atmospheric boilers. In 2015 we installed a further 4 condensing boilers for domestic and room heat.
We are extremely pleased with the performance of these boilers. We now enjoy (approx) a 25% gas reduction and have an extremely reliable heat source for our room heat, domestic hot water and swimming pool. We have also installed the same type of boiler at Crowne Plaza Coogee Beach and have intentions to replace boilers at our other properties.
Terry and his team are more than capable of assistance with design, installation planning, ROI calculations and have a solid list of installers if required. The after sales service is also very good. I would have no hesitation in recommending Automatic Heating to work through this process.
Robin Area Director - Engineering - Victoria & SB & G PortfolioSome feedback on the recent UTAS project.
The integration of the Modulex Condensing Boilers to each building at the UTAS campus to replace the centralised high temperature water loop has been a success with positive feedback from the Client.
The boilers have been more than reliable and the integration to the existing Honeywell control system has been faultless.
The design of the Modulex type boilers providing separate and individual control modules with each burner provides good flexibility and omits the requirements for standby boilers which has saved the Client $ on capital funding when a high level of redundancy is required.
Commissioning, servicing, and warranty on the boilers has been impressive.
We have no hesitation in specifying these type of boilers now and for future projects.
October 2016
Nathan Principal Technical Officer - Mechanical at JMG Engineers & PlannersFive Years ago, at Wrest Point Hotel Casino we replaced our Electric Boiler Water heating with high efficient Modulex boilers.
That section of the complex comprises of 210 accommodation rooms, Foyer Reception and Egress areas, 2 large Restaurants, Table Gaming, Pool and Gym, VIP lounge, Cabaret and exhibition rooms along with back of house areas and Canteen.
All these areas / spaces are heated with the Modulex Boilers and the domestic hot water to those listed above, are also supplied via heat exchanger.
Our location exposes us to inclement weather and long cold days; combine this with the existing design and age of some of our mechanical services, alongside the peak loading with the combination of space heating and Hotel Hot Water, Wrest Point has a large heating load for over 6 months of the year with a lot of moments (spikes) of high demand on top of that. During summer we only rely on the Boilers for Domestic Hot Water.
The Modulex Boilers installed as a retro fit to an existing system, they are efficient and practical as they step up and down in stages, and those individual stages also step as percentage burn. They are quick to respond and have been problem free.
Here at Wrest Point we test the heating water monthly, (it could be ¼ly), and service the boilers annually every summer, with the odd filter and mesh replacement.
I recommend them; as they were also recommended to me via another property
John Maintenance Manager at Wrest Point Hotel Casino -
Product Quick Check
Product: Modulex EXT Condensing Boiler Type: Condensing Premixed Range: 150-900kW Efficiency: 109% (Nett) 98% (Gross) Fuel Type: Natural Gas, LPG Gas Approval Type: Type B approved to AS3814 Outdoor option: Yes Modulation: Up to 1:39 Cascadeable: Yes Max Pressure: 600kPa Low Nox: Yes Building J Code 2019 Compliant: Yes 
Modulex EXT is a range of floorstanding condensing boilers that provides an infinitely flexible solution for buildings requiring a high output heating system.
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Product
CodeOutput
(50/30ºc)
kWNet
Efficiency
(50/30ºc) %Output
(80/60ºc)
kWNet
Efficiency
80/60°C %Nominal
Input MJ/
hrBurner
QuantityModulation
RatioFlow Rate
Min/Max
L/s**Waterside
Pressure
Drop kPa*Total
Water
Volume litresDry
Weight KgPower Supply
V/A/HzMX150EXT 150 100.8 146.1 97.4 540 3 x 50kW 01:12 1.17/2.33 16 14 236 240/0.875/50 MX200EXT 200.4 100.2 195.2 97.6 720 4 x 50kW 01:16 1.56/3.11 16 18 295 240/1.208/50 MX250EXT 251.4 100.5 244.5 97.8 900 5 x 50kW 01:20 1.95/3.89 16 22 325 240/1.508/50 MX300EXT 302.7 101.9 294 98 1080 6 x 50kW 01:24 2.34/4.68 16 26 386 240/1.771/50 MX350EXT 354.6 101.9 342.2 98.2 1260 7 x 50kW 01:28 2.74/5.48 16 31 419 240/2.112/50 MX440EXT 445 104 424.35 98.23 1600 4 x 110kW 01:19 3.38/6.76 15 67 501 240/2.608/50 MX550EXT 557.8 104 530.44 98.23 2000 5 x 110kW 01:25 4.23/8.45 18 80 595 240/3.262/50 MX660EXT 670.1 104 636.53 98.23 2400 6 x 110kW 01:29 5.07/10.14 20 94 657 240/3.916/50 MX770EXT 783.2 104 742.62 98.23 2800 7 x 110kW 01:34 5.92/11.83 22 108 754 240/4.566/50 MX900EXT 900.3 104 849.05 98.27 3200 8 x 110kW 01:39 6.76/13.51 20 122 906 240/5.216/50 * Requested rated flow rate in l/s (Δt=20K) / Maximum flow rate in l/s (Δt=15K). Primary pump must be controlled by the boiler.
Product Code
MX150EXTOutput (50/30ºc) kW 150 Net Efficiency (50/30ºc) % 100.8 Output (80/60ºc) kW 146.1 Net Efficiency (80/60ºc) % 97.4 Nominal Input MJ/hr 540 Burner Quantity 3 x 50kW Modulation Ratio 01:12 Flow Rate Min/Max L/s** 1.17/2.33 Waterside Pressure Drop kPa 16 Total Water Volume litres 14 Dry Weight Kg 236 Power Supply V/A/Hz 240/0.875/50 MX200EXTOutput (50/30ºc) kW 200.4 Net Efficiency (50/30ºc) % 100.2 Output (80/60ºc) kW 195.2 Net Efficiency (80/60ºc) % 97.6 Nominal Input MJ/hr 720 Burner Quantity 4 x 50kW Modulation Ratio 01:16 Flow Rate Min/Max L/s** 1.56/3.11 Waterside Pressure Drop kPa 16 Total Water Volume litres 18 Dry Weight Kg 295 Power Supply V/A/Hz 240/1.208/50 MX250EXTOutput (50/30ºc) kW 251.4 Net Efficiency (50/30ºc) % 100.5 Output (80/60ºc) kW 244.5 Net Efficiency (80/60ºc) % 97.8 Nominal Input MJ/hr 900 Burner Quantity 5 x 50kW Modulation Ratio 01:20 Flow Rate Min/Max L/s** 1.95/3.89 Waterside Pressure Drop kPa 16 Total Water Volume litres 22 Dry Weight Kg 325 Power Supply V/A/Hz 240/1.508/50 MX300EXTOutput (50/30ºc) kW 302.7 Net Efficiency (50/30ºc) % 100.9 Output (80/60ºc) kW 294 Net Efficiency (80/60ºc) % 98 Nominal Input MJ/hr 1080 Burner Quantity 6 x 50kW Modulation Ratio 01:24 Flow Rate Min/Max L/s** 2.34/4.68 Waterside Pressure Drop kPa 16 Total Water Volume litres 26 Dry Weight Kg 386 Power Supply V/A/Hz 240/1.771/50 MX350EXTOutput (50/30ºc) kW 354.6 Net Efficiency (50/30ºc) % 101.9 Output (80/60ºc) kW 342.2 Net Efficiency (80/60ºc) % 98.2 Nominal Input MJ/hr 1260 Burner Quantity 7 x 50kW Modulation Ratio 01:28 Flow Rate Min/Max L/s** 2.74/5.48 Waterside Pressure Drop kPa 16 Total Water Volume litres 31 Dry Weight Kg 419 Power Supply V/A/Hz 240/2.112/50 MX440EXTOutput (50/30ºc) kW 445 Net Efficiency (50/30ºc) % 104 Output (80/60ºc) kW 424.35 Net Efficiency (80/60ºc) % 98.23 Nominal Input MJ/hr 1600 Burner Quantity 4 x 110kW Modulation Ratio 01:19 Flow Rate Min/Max L/s** 3.38/6.76 Waterside Pressure Drop kPa 15 Total Water Volume litres 67 Dry Weight Kg 501 Power Supply V/A/Hz 240/2.608/50 MX550EXTOutput (50/30ºc) kW 557.8 Net Efficiency (50/30ºc) % 104 Output (80/60ºc) kW 530.44 Net Efficiency (80/60ºc) % 98.23 Nominal Input MJ/hr 2000 Burner Quantity 5 x 110kW Modulation Ratio 01:25 Flow Rate Min/Max L/s** 4.23/8.45 Waterside Pressure Drop kPa 18 Total Water Volume litres 80 Dry Weight Kg 595 Power Supply V/A/Hz 240/3.262/50 MX660EXTOutput (50/30ºc) kW 670.1 Net Efficiency (50/30ºc) % 104 Output (80/60ºc) kW 636.53 Net Efficiency (80/60ºc) % 98.23 Nominal Input MJ/hr 2400 Burner Quantity 6 x 110kW Modulation Ratio 01:29 Flow Rate Min/Max L/s** 5.07/10.14 Waterside Pressure Drop kPa 20 Total Water Volume litres 94 Dry Weight Kg 657 Power Supply V/A/Hz 240/3.916/50 MX770EXTOutput (50/30ºc) kW 783.2 Net Efficiency (50/30ºc) % 104 Output (80/60ºc) kW 742.62 Net Efficiency (80/60ºc) % 98.23 Nominal Input MJ/hr 2800 Burner Quantity 7 x 110kW Modulation Ratio 01:34 Flow Rate Min/Max L/s** 5.92/11.83 Waterside Pressure Drop kPa 22 Total Water Volume litres 108 Dry Weight Kg 754 Power Supply V/A/Hz 240/4.566/50 MX900EXTOutput (50/30ºc) kW 900.3 Net Efficiency (50/30ºc) % 104 Output (80/60ºc) kW 849.05 Net Efficiency (80/60ºc) % 98.27 Nominal Input MJ/hr 3200 Burner Quantity 8 x 110kW Modulation Ratio 01:39 Flow Rate Min/Max L/s** 6.76/13.51 Waterside Pressure Drop kPa 20 Total Water Volume litres 122 Dry Weight Kg 906 Power Supply V/A/Hz 240/5.216/50 * Requested rated flow rate in l/s (Δt=20K) / Maximum flow rate in l/s (Δt=15K). Primary pump must be controlled by the boiler.
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Model Width L mm Depth P mm Height mm Connections Flow
mmConnections
Return mmGas Connections
mmFlue Diameter
mmMX150EXT 764 770 1150 64 (2 ½) 64 (2 ½) 50(2) 150* MX200EXT 1032 770 1150 64 (2 ½) 64 (2 ½) 50(2) 150* MX250EXT 1032 770 1150 64 (2 ½) 64 (2 ½) 50(2) 200 MX300EXT 1300 770 1150 64 (2 ½) 64 (2 ½) 50(2) 200 MX350EXT 1300 770 1150 64 (2 ½) 64 (2 ½) 50(2) 200 MX440EXT 1087 946 1448 100 (4) 100 (4) 80(3) 300 MX550EXT 1355 946 1448 100 (4) 100 (4) 80(3) 300 MX660EXT 1355 946 1448 100 (4) 100 (4) 80(3) 300 MX770EXT 1623 946 1448 100 (4) 100 (4) 80(3) 300 MX900EXT 1623 946 1448 100 (4) 100 (4) 80(3) 300 *the flue connection adapter 150/200 is included in the boiler delivery
Model
MX150EXTWidth L mm 764 Depth C mm 770 Height mm 1150 Connections Flow mm 64 (2 ½) Connections Return mm 64 (2 ½) Gas Connections mm 50(2) Flue Diameter mm 150* MX200EXTWidth L mm 1032 Depth C mm 770 Height mm 1150 Connections Flow mm 64 (2 ½) Connections Return mm 64 (2 ½) Gas Connections mm 50(2) Flue Diameter mm 150* MX250EXTWidth L mm 1032 Depth C mm 770 Height mm 1150 Connections Flow mm 64 (2 ½) Connections Return mm 64 (2 ½) Gas Connections mm 50(2) Flue Diameter mm 200 MX300EXTWidth L mm 1300 Depth C mm 770 Height mm 1150 Connections Flow mm 64 (2 ½) Connections Return mm 64 (2 ½) Gas Connections mm 50(2) Flue Diameter mm 200 MX350EXTWidth L mm 1300 Depth C mm 770 Height mm 1150 Connections Flow mm 64 (2 ½) Connections Return mm 64 (2 ½) Gas Connections mm 50(2) Flue Diameter mm 200 MX440EXTWidth L mm 1087 Depth C mm 946 Height mm 1448 Connections Flow mm 100 (4) Connections Return mm 100 (4) Gas Connections mm 80(3) Flue Diameter mm 300 MX550EXTWidth L mm 1355 Depth C mm 946 Height mm 1448 Connections Flow mm 100 (4) Connections Return mm 100 (4) Gas Connections mm 80(3) Flue Diameter mm 300 MX660EXTWidth L mm 1355 Depth C mm 946 Height mm 1448 Connections Flow mm 100 (4) Connections Return mm 100 (4) Gas Connections mm 80(3) Flue Diameter mm 300 MX770EXTWidth L mm 1623 Depth C mm 946 Height mm 1448 Connections Flow mm 100 (4) Connections Return mm 100 (4) Gas Connections mm 80(3) Flue Diameter mm 300 MX900EXTWidth L mm 1623 Depth C mm 946 Height mm 1448 Connections Flow mm 100 (4) Connections Return mm 100 (4) Gas Connections mm 80(3) Flue Diameter mm 300 *the flue connection adapter 150/200 is included in the boiler delivery
