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Released in 2010, the T-KJr2-IN and T-KJr2-OS is the smallest water heater in the Takagi tankless line. But this small, but powerful unit – with gas inputs up to 140,000 BTU per hour – can meet all the hot-water needs of a small American home or apartment with one or two bathrooms. Designed to virtually do anything a 40-gallon tank-type water heater can do and more, the compact, wall mounted T-K Jr. can support hydronic baseboard or radiant floor heating applications, as well as provide domestic hot water to plumbing fixtures and appliances. The T-K Jr. has an energy factor of 0.81-0.83. 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 3.8 GPM, or 228 GPH. In colder areas where the input temperature may be 40°F or less you can expect a flow rate of about 2.9 GPM or 174 GPH. The All new T-KJr2 has a max GPM of 6.6GPM.
Cost-efficient and environmentally friendly, the T-KJr2-IN can be converted into a direct-vent unit by using the optional TV10 conversion kit for installation in a garage, a utility closet or any confined space in which makeup air may be limited. Please refer to “Accessories” for more information on venting options.
Using the average of 60°F input water cited above, the T-K Jr. can provide enough hot water for one shower and a lavatory basin at a time; or one low-flow shower (2.5 GPM or less) and an appliance, such as a dishwasher or washing machine, at the same time. For much colder input temperatures, such as 40°F or lower, this unit can provide endless hot water for consecutive uses; that is, running only one major fixture at a time. Please refer to the flow charts for specific rates.
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.
For Energy Star Certifications please follow Specification Sheets and Literature that is dated 2010 ONLY.
Natural Gas Input | Min. 19,500 Btu | Â Max. 140,000 Btu |
LPG Input | Min. 19,500 Btu | Â Max. 140,000 Btu |
Gas Connection | 3/4″ NPT | |
Water Connection | 3/4″ NPT | |
Natural Gas Pressure Inlet | Min. 5.0″ W.C. | Â Max. 10.5″ W.C. |
LP Gas Pressure Inlet | Min. 8.0″ W.C. | Â Max. 14.0″ W.C. |
Weight | 33 lbs | |
Dimensions | 20.5″ x 13.8″ x 6.7″ | |
Ignition | Electronic Ignition | |
Electrical Supply | AC 120V (60 Hz) | |
Water Pressure | Min. 15 psi | Â Max. 150 psi |
Natural Manifold Pressure | 2.0-2.5″ W.C. | |
LP Manifold Pressure | 2.5-3.1″ W.C. |