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Takagi T-K4-OS Tankless Water Heaters Tech / Specs
Outdoor Installation Only

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  • Technical Specs of the Takagi T-K4-OS
  Please refer to install manual for full specifications
Power Input 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" Male NPT
Water Connection 3/4" Male NPT
Natural Manifold Pressure 2 to 2.5" W.C.
Propane Gas Manifold Pressure 3.7 to 4.0" W.C.
Electrical Supply 120 Volts
Weight 38 lbs.
(H x W x D)
20.5 inches by 13.8 inches by 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
80°F rise / 3.9 gallons per minute
70°F rise / 4.4 gallons per minute
60°F rise / 5.2 gallons per minute
55°F rise / 5.7 gallons per minute
50°F rise / 6.2 gallons per minute
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°
Installation Location In Moderate Temperature Climates
Ignition Electronic Ignition

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