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The T-K Jr. Tankless Water Heater

The T-K Jr. is the smallest unit in the Takagi line-up and offers direct vent capability and power. The T-K Jr. is perfect for light residential (i.e. small apartment units) and radiant heating applications. Released in 2003, the T-K Jr. 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, as well as smaller commercial applications. 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 efficiency rating of 83%, using natural gas, and 84% with propane. At an average ∆T (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 2.7 GPM or 162 GPH.

Cost-efficient and environmentally friendly, the T-K Jr. can be converted into a direct-vent unit by using the optional TV09 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, 140°F, and 182°F. To achieve any temperatures other than those presets, your client will require the TK-RE20 temperature controller.

Specifications

The T-H1 Tankless Water Heater

The T-H1 is designed for commercial and heavy residential use and is the most efficient (up to 95% in thermal efficiency) Tankless Water Heater on the market today. It offers direct vent capability, has a condensing unit and is very efficient.

The T-H1, Takagi's greenest model, is a condensing unit with an average efficiency of 92% with natural gas and 95% with propane. At a ∆T of 60ºF in warmer areas - where the winter ground water is 60ºF and with the output set at 120ºF - the unit will provide 6.1 GPM, or 366 GPH. In older areas where the input temperature may be 40ºF or less, you can expect a flow rate of about 4.3 GPM or 258 GPH.

The T-H1 can provide at least three showers' worth of water simultaneously along with one appliance at input temperature of 60ºF or greater.

The T-H1 is also the industry's most efficient. This state-of-the-art tankless water heater uses not one, but two heat exchangers to squeeze additional energy from the water, resulting in the higher-than-average efficiencies stated above. Takagi has added a stainless steel secondary heat exchanger to recover waste heat from the vent stack before it leaves the unit to preheat the incoming ground water. This second heat exchanger and the resulting condensation that forms from the high efficiency operation, classify it as a "Condensing" Water Heater. The condensate that these types of heaters produce can be slightly acidic, so it's collected and sent through a built-in neutralizer, allowing for disposal into standard drainpipe.

With a variable gas input up to 199,000 BTU per hour and its high efficiency, the T-H1 can deliver more than 10 gallons of hot water per minute under ideal conditions. As a result, the unit will meet the needs of most large homes, as well as single heater-usage commercial and industrial applications. Able to deliver water up to 182ºF, the T-H1 is appropriate for sanitary applications needing 180ºF water to meet code requirements.

The four preset temperatures of the unit are: 113ºF, 122ºF, 140ºF, and 182ºF. To achieve any temperature other than those presets, the user will require the TK-RE10 temperature controller.

Specifications

The T-M50 Tankless Water Heater

The T-M50, also know as "The Monster Tankless," is Takagi’s most powerful tankless water heater yet and was developed specifically for commercial applications. The T-M50 offers many benefits including the following:  

380,000 BTU/U, up to 14.5 GPM (Max)

The versatility of being installed either indoor, outdoor, or with a direct vent, all with the same unit.

Easy-link capability up to 4 units.  You may connect up to 10 units and generate over 140 GPM using a multi-controller unit.

Features a Dual-Heat Exchanger system that allows for redundancy.  In the event of an emergency, if one system goes down, the other system will still stay running.

Uses HRS copper, the most durable copper in the industry.  HRS copper is stronger and harder than the standard copper, making it much more resilient against erosion and leaks.

Offers precise control of the water valves.

8 new dipswitch temperature settings: 100 F, 115 F, 120 F, 135 F, 145 F, 155 F, 165 F, and 185 F.  These temperatures are better suited for commercial applications.

7-segment LED for error codes:  Remote controller is not required to pinpoint problems.

Ignition indicators: indicates which burner is fired up at the moment.

Utilizes the air-fuel ratio rod for added safety.

The drum thickness is 0.5mm, making it 25% thicker than our typical residential unit.  During every ignition cycle, the heat exchangers undergo heat stress and a thicker drum increases its resistance to this stress.

Increase in fin pitch:  Fins are more "spread out" which improves the durability of the heat exchanger. More space in-between the fins reduces build-up.  Higher temperatures at the top of heat exchanger reduces condensation.

ASME version is coming soon.

Specifications

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Last modified: May 25, 2008