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LAARS - JVS225NDISU2 Compact Gas-Fired Hydronic Boiler NG 225 MBTU/h

Item: JVS225NDIS

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About This Product

Product Info


LAARS - MINI-THERM, JVS - Residential - Hydronic Boilers Extremely popular with homeowners, 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 P.S.I., ASME rated
• Hydrostatic test pressure at factory: 60 P.S.I.
• 30 psi ASME pressure relief valve
• Maximum gas supply pressure: Natural 10.5" W.C.; Propane 13" W.C.
• 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 (B.V.S.S.)
• Flame rollout safety switch
• Up to 85% AFUE


Weight181 Pounds (lbs)
Width32 Inches (In)
Height32 Inches (In)
Country of OriginUSA
Length28 Inches (In)
Air FlowNone Provided by Manufacturer
BTU Input225000
BTU Output191000
Connection Size1 1/4" NPT
Connection TypeNPT
CUL ListedYes
Energy Star RatedNo
FinishPowder Coated
Fuel TypeNatural Gas
Gas Connection3/4" [19.05 mm] N.P.T.
Gas TypeNatural Gas
Ignition TypeDirect Spark
Temperature Range150°F to 220°F (65.5°C to 104.4°C)
UL ListedNo
UL RecognizedNo
Voltage115 VAC
Warranty OfferedYes


Equipment Part List