Free Shipping on Orders Over $200*
Menu
  • Takagi Tankless Water Heater - Includes Remote Control - Natural Gas - T-K4-OS NG

    - 190.000 BTU - Outdoor Installation

    Product ID • TK4OSNG00000

  • This Product is no longer available through Houseneeds.com. It has either been discontinued, made obsolete, or is no longer available for sale. Please select another product. Please click here to see Replacement Product.

Overview

The Takagi T-K4-OS is a mid-sized gas water heater in the Takagi tankless line and is the same as the T-K4-IN, but for outdoor installation only (Moderate temperature climates). The T-K4-OS has gas inputs up to 190,000 BTU per hour - can meet all the hot-water needs of your home, business or condo with one or two bathrooms. The T-K 4 OS has an energy factor of 81% to 83%. At an average (rise in temperature) of 60°F in warmer areas - where the winter ground water is 60°F and with the output set at 120°F - the unit will provide 5.2 GPM. The All new T-K4-OS has a max GPM of 8.0 gmp.

For indoor installation - use the Takagi T-K4-IN.

The four preset temperatures on the unit are: 113°F, 122°F, 131°F, 140°F. To achieve any temperatures other than those presets, your client will require the TK-RE02 temperature controller.

Return Policy | Shipping Policy

Manuals & Docs

Technical Specs

Takagi T-K4-OS Tankless Water Heaters Specs

  • Natural Gas
    11,000-190,000 BTU
  • Propane Gas
    11,000-190,000 BTU
  • Water Pressure Minimum
    15 PSI
  • Maximum
    150 PSI
  • Gas Connection (Min)
    3/4 Inch Male NPT
  • Water Connection
    3/4 Inch Male NPT
  • Natural Manifold Pressure
    2 to 2.5 Inch W.C.
  • Propane Gas Manifold Pressure
    3.7 to 4.0 Inch W.C.
  • Electrical Supply
    120 Volts
  • Weight
    38 lbs
  • Height
    20.5 inches
  • Width
    13.8 inches
  • Depth
    8.5 inches
  • Maximun Water Flow
    8.0 GPM
  • Minimum Flow to Activate
    .5 GPM
  • Flow Rates (50 degree Input Water Assumed)
    90°F rise / 3.5 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    80°F rise / 3.9 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    70°F rise / 4.4 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    60°F rise / 5.2 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    55°F rise / 5.7 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    50°F rise / 6.2 gallons per minute
  • Flow Rates (50 degree Input Water Assumed)
    40°F rise / 6.7 gallons per minute
  • Temperature Settings without remote controller
    113°, 122°, 131° and 140°
  • Temperature Settings with Temperature Remote Controller TK- RE02
    99°, 100°, 102°, 104°, 106°, 108°, 109°, 111°, 113°, 115°, 117°, 122°, 131°, 140°, 158° and 167°
  • Exhaust Vent Size
    4 Inches Sealed Stainless Steel CAT III Vent Pipe (50 feet max length subtract 5 feet each 90 degree elbow with a maximun 5 elbows)
  • Intake Vent Size (optional)
    3 Inch Piping
  • Ignition
    Electronic Ignition
  • Backflow Preventer
    TK-BF01 Required in weather condtions below 36 F degrees
  • Vertical Condensation Drain
    Install per local code

Info & Links