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T-KJr2-OS-NG 6.6 GPM Natural Gas Outdoor Tankless Water Heater

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  • Width: 13.8"
  • Height: 20.5"
  • Depth: 6.7"
Fuel Type:

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Released in 2010, the T-KJr2-OS are the smallest water heaters in the Takagi tankless line. This small, but powerful unit can meet all the hot-water needs of a small American home or apartment with one or two bathrooms. Designed to virtually do anything a 40-gallon tank-type water heater can do and more, the compact, wall mounted T-K Jr. can support hydronic baseboard or radiant floor heating applications, as well as provide domestic hot water to plumbing fixtures and appliances.   Available at AppliancesConnection


  • Natural Gas Input: (Minimum) 19,500 Btu
  • Natural Gas Input: (Maximum) 140,000 Btu
  • Gas Connection: 3/4" NPT
  • Water Connection: 3/4" NPT
  • Dimensions: 20.5" x 13.8" x 6.7"
  • Ignition: Electronic Ignition
  • Electrical Supply: AC 120V (60 Hz)
  • Outdoor Installation


Configuration Tankless Water Heater
Default Temperature 122° F
Depth 6.7
Direct Vent No
Fuel Type Liquid Propane, Natural Gas
Gas Connection 3/4" NPT
Height 20.5
Ignition Type Electronic Ignition
Indoor Installation No
Liquid Propane Pressure (Max) 14.0 WC
Liquid Propane Pressure (Min) 8.0 WC
Low Lead Compliant Yes
Maximum Flow Rate 6.6 GPM
Maximum Gas Input 140000 BTU
Natural Gas Pressure (Max) 10.5 WC
Natural Gas Pressure (Min) 5.0 WC
NG Energy Factor 0.81-0.83
Outdoor Installation Yes
Power Supply AC 120V
Product Weight 33
Temperature (Max) 140° F
Temperature (Min) 113° F
Theme Tankless Water Heaters
Water Pressure (Max) 150 PSI
Water Pressure (Min) 15 PSI
Width 13.8



  • Brand:Takagi
  • UPC:671657108236
  • Stock Id:256050


  • Fuel Type:Liquid Propane, Natural Gas


  • Width:13.8"
  • Height:20.5"
  • Depth:6.7"

    Technical Details

  • Configuration:Tankless Water Heater
  • Ignition Type:Electronic Ignition
  • Outdoor Installation:Yes
  • Temperature:(Max) 140° F
  • Power Supply:AC 120V
  • Product Weight:33 lbs
  • Low Lead Compliant:Yes
  • Direct Vent:No
  • Maximum Flow Rate:6.6 GPM
  • Gas Connection:3/4" NPT
  • Maximum Gas Input:140000 BTU
  • Default Temperature:122° F
  • Indoor Installation:No
  • Liquid Propane Pressure:(Max) 14.0 WC
  • Natural Gas Pressure:(Max) 10.5 WC
  • NG Energy Factor:0.81-0.83
  • Water Pressure (Max):150 PSI
  • Water Pressure (Min):15 PSI
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