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TAKAGI TK4UOS Tankless Water Heater Natural Gas 8.0 GPM outdoor

Item#: TK4UOSN

Brand: Takagi

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Product Details

Tech Specs

Emissions: Ultra Low NOx
Maximum BTUs: 190,000
Minimum BTUs: 19,500
Water Connection Location: Bottom
Water Connection: 0.75"
Flow Rate: 8.00
Heat Exchanger: Copper
Voltage: AC 120V
Energy Factor: 0.82
ENERGY STAR® Qualified: No
Remote Control: Yes
Technology: Non-Condensing
Multilink: No

Dimensions & Venting

Height: 20.25"
Width: 13.75"
Depth: 9.50"
Product Weight: 37 lbs.
Vent Type: Direct Vent
Vent Size: 4"

The T-K4U supplies hot water to domestic hot water systems (directly or indirectly) which can be used with storage tanks, recirculation systems, hydronic heating systems, radiant floor systems, and/or domestic & heating applications.

  • 15-year limited heat exchanger, 5 yrs limited parts Residential use
  • Energy Factor of 0.82 for Natural Gas
  • Maximum flow rate of 8.0 GPM at 35°F temperature rise (4.4 GPM at 70°F rise)
  • Includes a remote control as a standard feature
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes
  • Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
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