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VARI-PRIME TM Control Technology Laars VARI-PRIMETM flow control matches the modulation rate of a MagnaTherm’s combustion system to the rate of a variable speed boiler pump. This unique on board control allows the MagnaTherm boiler to mirror the heating system’s profile during varying load conditions and optimize overall efficiency. COMMERCIAL HIGH EFFICIENCY Boiler pumps are typically sized for the maximum flow that a boiler needs, but boilers rarely operate at maximum capacity. A pump’s power consumption can drop by as much as 50% with only a 20% reduction in speed. By replacing a boiler’s typical on/off pump with a VARI-PRIMETM equipped MagnaTherm control and variable speed pump, over a thousand dollars in boiler pump watt usage can be saved per year. The payback for the variable speed pump setup can be realized in as little as one year! Condensing Boiler and Volume Water Heater The combined potential energy savings of the MagnaTherm’s high efficiency combustion coupled with the VARI-PRIMETM control system is huge. Only the Laars MagnaTherm with built in VARI-PRIMETM controls can offer such savings in one package! Pump Control On-Board VARI-PRIMETM Pump Control Energy Savings Example Typical boiler pump energy use seen over a full heating season located in upstate New York (September through April). When an On/Off Boiler Pump is used - kWH consumed When the Laars VARI-PRIME is used - kWH consumed Annual VARI-PRIMETM kWH savings Annual Percent Pump Electrical Savings Annual Dollar Savings* View our entire product line at www.Laars.com A Three Million BTU/hr MagnaTherm using VARI-PRIMETM pump control and a Goulds 22SH variable speed boiler pump were used in this example. *2013 US Average of 11 cents per kWH used, source US Energy Information Administration. See Laars VARI-PRIMETM white paper 9185 for complete details. Lead Lag Cascading of up to 8 MagnaTherms The advanced MagnaTherm control system also includes a cascading feature that allows for up to eight units to be lead lagged together. This results in a modulating heating cell of up to 32 million BTU/hr with a combined 40:1 turndown. Also included is an auto rotation function that periodically changes lead boiler to evenly spread service between all boilers. Communication with Building Automation Systems happens seamlessly via a built-in Modbus protocol included with all MagnaTherm boilers. The Laars Gateway is available for use with BacNET and LON networks. • Fax 800.559.1583 (Customer Service and Product Support) 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130 800.900.9276 Litho in U.S.A. © Laars Heating Systems 1504 Document 1288C 95% Certified Thermal Efficiency Indoor and Outdoor Installation Laars Heat Exchanger Design

Getting to know the MAGNATHERM Sizing Data, for the MAGNATHERM CONDENSING BOILER & VOLUME WATER HEATER Dimensional Data Dimensional Data Large Color Touch Screen A Perfect Balance of Size, Form and Function Every commercial heating system is unique and as such requires a boiler that can respond to system fluctuations, while maintaining the energy conservation standards held by today’s building owners. Such a boiler now exists in the innovative Laars MagnaTherm. A multi-color, simple to use smart touch screen display allows you to fully control and setup the MagnaTherm. On board every boiler...

Getting to know the MAGNATHERM Sizing Data, for the MAGNATHERM CONDENSING BOILER & VOLUME WATER HEATER A Perfect Balance of Size, Form and Function Every commercial heating system is unique and as such requires a boiler that can respond to system fluctuations, while maintaining the energy conservation standards held by today’s building owners. Such a boiler now exists in the innovative Laars MagnaTherm. On board every boiler is MagnaTherm’s unique VARI-PRIMETM control that allows building owners to save thousands of dollars over the life of the boiler due to dramatically reduced energy...

Getting to know the MAGNATHERM Sizing Data, for the MAGNATHERM CONDENSING BOILER & VOLUME WATER HEATER A Perfect Balance of Size, Form and Function Every commercial heating system is unique and as such requires a boiler that can respond to system fluctuations, while maintaining the energy conservation standards held by today’s building owners. Such a boiler now exists in the innovative Laars MagnaTherm. On board every boiler is MagnaTherm’s unique VARI-PRIMETM control that allows building owners to save thousands of dollars over the life of the boiler due to dramatically reduced energy...

VARI-PRIME TM Control Technology Laars VARI-PRIMETM flow control matches the modulation rate of a MagnaTherm’s combustion system to the rate of a variable speed boiler pump. This unique on board control allows the MagnaTherm boiler to mirror the heating system’s profile during varying load conditions and optimize overall efficiency. COMMERCIAL HIGH EFFICIENCY Boiler pumps are typically sized for the maximum flow that a boiler needs, but boilers rarely operate at maximum capacity. A pump’s power consumption can drop by as much as 50% with only a 20% reduction in speed. By replacing a...

VARI-PRIME TM Control Technology Laars VARI-PRIMETM flow control matches the modulation rate of a MagnaTherm’s combustion system to the rate of a variable speed boiler pump. This unique on board control allows the MagnaTherm boiler to mirror the heating system’s profile during varying load conditions and optimize overall efficiency. COMMERCIAL HIGH EFFICIENCY Boiler pumps are typically sized for the maximum flow that a boiler needs, but boilers rarely operate at maximum capacity. A pump’s power consumption can drop by as much as 50% with only a 20% reduction in speed. By replacing a...