The compact TK-310U-E is a fully modulating, gas fired, non-condensing tankless water heater perfect for residential applications. The TK-310U-E can produce enough hot water for up to three bathrooms in warmer climates and it also complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
Overview
The TK-310U-E supplies hot water to domestic hot water systems and can be used with water storage tanks, recirculation systems, and/or combined domestic & heating applications.
- 15-year limited heat exchanger, 5 yrs limited parts Residential use
- Field convertible from Natural Gas to Liquid Propane
- 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)
Technical Specs:
- Emissions: Ultra Low NOx
- Maximum BTUs: 190,000
- Minimum BTUs: 19,500
- Water Connection Location: Bottom
- Water Connection: 3/4″
- Flow Rate: 8
- Heat Exchanger: Copper
- Voltage: AC 120V
- UEF: 0.82
- ENERGY STAR® Qualified: No
- LEED Rating: 0
- Remote Control: Yes
- Technology: Non-Condensing
- Multilink: No
Dimensions and Venting:
- Height: 20.50″
- Width: 13.75″
- Depth: 9.50″
- Product Weight: 39 lbs.
- Vent Type: Direct Vent
- Vent Size: 4″












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