The compact TK-310U-I is a fully modulating, gas fired, non-condensing tankless water heater perfect for residential applications. It is field convertible from Natural Gas to Liquid Propane and with a maximum input of 190000 Btu/hr, the TK-310U-I 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).

Takagi Tankless Water Heater, Series: 200, 190000 Btu/hr Heating, Liquid Propane/Natural Gas, 3/4 in NPT Gas Connection, Electronic Ignition, Direct Vent, 4 in Vent, Condensing/Non Condensing: Non-Condensing, 8 gpm, 0.81, 3/4 in NPT Water Connection, 10.5 in WC, 35 deg F, Ultra Low NOx: Yes, Copper, Indoor/Outdoor: Indoor, 20-1/2 in H x 13-3/4 in W x 10 in D, Commercial/Residential/Dual: Commercial/Residential

• The TK-310U-I supplies hot water to domestic hot water systems and can be used with water storage tanks, recirculation systems, and/or combined domestic and heating applications
• Venting with category III stainless steel
• Complies with ultra-Low NOx regulations of less than 14 ng/J

• Instruction/Installation Manual https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Takagi_TK510UE_Manual.pdf
• Owners/User Manual https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Takagi_TK-510U-E_User_Manual.pdf
• Specification Sheet https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Takagi_TK510UE_Specification_Sheet.pdf
• Warranty Information https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Takagi_TD2INN_Warranty.pdf