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LAARS - Compact Gas-Fired Hydronic Boiler 100 MBTU/h Natural Gas

Item: JVS100NDIS

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About This Product

Product Info


LAARS - The JVS model offers a new attractive and easy-to service jacket. Well-known for its economy, the Mini-Therm has a built-in draft diverter and automatic vent damper to stop your valuable fuel payments from disappearing up the chimney in wasted heat.

Standard Equipment
  • PI Controller
  • Outdoor reset with ratios of 0.4 to 3.6
  • Warm Weather Shutdown (WWSD)
  • Domestic Hot Water Operation (DHW)
  • Indicator lights for power, heat call, DHW call and WWSD
  • Automatic boiler differential
  • Pump pre-purge, post-purge and excercise
  • Codes for sensor errors
  • Venting: built-in draft diverter
  • Design certified/tested by CSA International
  • Natural or propane gas
  • Maximum working pressure: water 30 psi, ASME rated
  • Hydrostatic test pressure at factory: 60 psi
  • 30 psi ASME pressure relief valve
  • Maximum gas supply pressure: Natural 10-1/2" WC; Propane 13" WC
  • Pressure relief valve: capacity in excess of boiler input rating
  • Material specifications per Section IV, ASME Code
  • Headers: cast iron per ASME requirements
  • Tubes: copper with integral formed external fins
  • Main burners: aluminized steel
  • Air supply: natural aspiration
  • Altitudes: 0 - 10,000 ft.
  • Spark to pilot ignition
  • Electrical: 115V-60Hz-1PH less than 12 Amps 24V transformer mounted and wired
  • Pump relay: standard
  • Vent damper and wire harness
  • Blocked vent safety switch (BVSS)
  • Flame rollout safety switch
  • Up to 85% AFUE
Warning: this product contains a chemical known to the State of California to cause cancer.


Weight134 Pounds (lbs)
Width17 Inches (In)
Height29 Inches (In)
Country of OriginUSA
Length28 Inches (In)
BTU Input100000
BTU Output85000
Connection Size1 1/4"
Connection TypeNPT
CUL ListedYes
Cycle/Hertz60 Hz
Energy Star RatedNo
FinishPowder Coated
Fuel TypeNatural Gas
Gas ConnectionNPT
Gas TypeNatural Gas
Ignition TypeDirect Spark
Prop 65Yes
Temperature Range150°F to 220°F (65.5°C to 104.4°C)
UL ListedNo
UL RecognizedNo
Voltage115 VAC
Warranty OfferedYes


Equipment Part List