Laars JVT 225 Mini-Therm Residential Gas-Fired Hydronic Boiler

• Input (BTU/h): 225,000
• Input (kW): 65.9
• Firing Mode: On/Off
• Configuration: Thermocouple/Continuous Burning Pilot
• Heat Capacity (BTU/h): 189,000
• Heat Capacity (kW): 55.4
  
• Net IBR (BTU/h): 164,300
• AFUE: 81.5
• Water Connection: 1-1/4"
• Gas Connection: 1/2"
• Minimum Clearances from Adjacent Construction:
  • Left & Right Sides: 6"
  • Front: 4"
  • Flue: 6"
  • Top: 23" (50-125), 36" (160 & 225)

• Venting: built-in draft diverter
  
• Design certified/tested by CSA International
  
• Maximum working pressure - water 30 psi, ASME rated
• Hydrostatic test pressure at factory - 60 psi
• Material specifications as per Section IV, ASME Code
• Maximum gas supply pressure - Natural - 10.5" w.c., Propane - 13" w.c.
• Pressure relief valve - capacity in excess of boiler input rating
• Headers: cast iron per ASME requirements
  
• Tubes: pure copper with integral formed external fins
• Main burners: aluminized steel
  
• Air supply - natural aspiration
• Altitudes: 0-10,000 ft.
  
• Floor under boiler: when used on combustible floor, a special base must be supplied
  
• Two-stage combustion system and operating control (JVS sizes 100-225)
  
• Blocked vent safety switch (BVSS)
  
• Pump relay: standard
• Vent damper and wire harness
  
• Rollout safety switch
• Electrical - 115V/60Hz/1PH less than 12 Amps, 24 V transformer mounted and wired
• 20 Year Warranty

Mini-Therm II Hydronic Boiler Series Manual