Spec Sheet

Customer Service and Product Support: 800.900.9276 • Fax [phone]
Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax [phone]
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 [phone] Fax: [phone]
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1906 Document 5084-103
Standard features shall include:
• ASME "HLW" stamp
• 160 psi maximum working pressure
• Meets NSF/ANSI-372 Low Lead Content
certication
• Certied for Category II and Category IV vent
systems
• Indoor/outdoor
• Low NOx system exceeds the most stringent
regulations for air quality - 9ppm NOx
• High condensing e󰀩ciency
• Modulation down to 5% of full re (20:1
turndown)
• Sophisticated gas/air valve allows for constant
control of modulation
• Tru Trac real-time O2 sensing maintains
e󰀩ciency throughout the modulation range
• Sealed combustion chamber
• Pre-mix stainless steel burner
• Stainless steel heat exchanger with welded
construction
• Electronic PID modulating control with large
touchscreen and color display
• Multiple independent heat demands
• Controller cascades with up to eight
MagnaTherm heaters equipped with Laars Linc
control
• Accepts 4-20ma or 0-10VDC external modulation
or external set point control
• Modbus RTU & BACnet MSTP on board
• Domestic water pump control with time delay
• Sensor for DHW tank
• Horizontal or vertical direct vent
• Vent and air pipe lengths of up to 100 equivalent
feet (each)
• "Knock-down" feature: Removable top section for
easy handling and installation
• High and low gas pressure switches
• Vent temperature cuto󰀨
• Normally open alarm contact
• Air lter
• Built-in condensate trap
• Water ow switch
• Temperature & pressure gauge
• Low water cuto󰀨
• 125 psi (861kPa) ASME rated pressure relief
valve
• Groove lock ttings (optional ange adapter)
• Burner site glass
• 10-Year limited warranty
proving rate failure. Valve information shall be viewable via the service menu, and shall include valve phase, fuel actuator position, air actuator position, VSD
setting, modulation rate, ame signal, error code, diagnostic code, inputs, outputs, burner ID, lower trim limit, upper trim limit, current trim and fan speed.
Heater history shall be accessible via the service menu, and shall have information on demand cycle counts, burner cycles, pump cycles, recent lockout
conditions, heater temperature statistics and ring time statistics.
The control shall easily allow the user to force the heater into minimum or maximum ring rate, for setup and diagnostic purposes. The control shall
di󰀨erentiate between a lockout, a hold, or an alert. If an issue occurs, the system will display a brief description of the issue on the control screen. The user
shall be able to tap the message icon on the display to be presented with a more detailed explanation of the issue.
Digital inputs accessible in the service menu shall include on/o󰀨 status of the ow switch, low water cuto󰀨, manual reset high limit, thermal cutout, high gas
pressure switch, low gas pressure switch, condensate level, and calls for DHW. Digital outputs accessible in the service menu shall include on/o󰀨 status of
heater run, alarm, safety satised, valve enabled, valve reset, pumps, auxiliary power output, and auxiliary dry contact.
Analog inputs accessible in the service menu shall include inlet water temperature, outlet water temperature, ue temperature, and DHW temperature.
Analog outputs accessible in the service menu shall include percentage depictions for pump speed, fan speed, mixing valve, and auxiliary.
The heater control shall have a USB port that allows parameter sets to be uploaded from the controller and downloaded from the controller, for diagnostic
purposes, and to allow a parameter set to be copied from one heater to another. The USB port shall also allow runtime data and history to be captured in a
tab-deliminated text le for use with spreadsheet programs.
Auto and manual reset high limit settings with reset di󰀨erential shall be programmable, and the control shall have an anti-short-cycle setting that allows the
user to choose how long heater will wait to re after a heat demand is satised. PID parameters (on hysteresis, o󰀨 hysteresis, proportional gain, integral
time, derivative time) and minimum / maximum delta T (temperature di󰀨erence) between which the heater will modulate shall be user-programmable for times
when such tuning would be benecial.
The control shall monitor ue gas temperature and shall reduce heater input as the maximum ue gas temperature is approached, with manual reset stop if
temperature exceeds maximum setting.
To assist in avoiding freeze-up conditions, the user shall be able to set a heater inlet water temperature that will activate an anti-frost mode. The user shall be
able to choose if a pump, multiple pumps, or pump(s) and burner will be energized when the heater enters this mode.
The control shall have dry alarm contacts for ignition failure.
Each heater shall be fully test red, (with water, gas, and venting connected), and all safety components tested, at the factory.
Controller cascades with up to eight Brute
MagnaTech units, if equipped w/ the same
controller
Real Time 0
2
sensing maintains e󰀩ciency
throughout the modulation range
200 Lafayette St.
Middleville, MI 49333
Warranty: [phone]
www.BradfordWhite.com
Litho in U.S.A. © Bradford White 1909 Document 5084-103-BW