Apr
5
The T-K3
The Takagi heater T-K3 is a very small tankless water heater — at 13.8 inches wide, it can fit between wall studs. It is also small another good way – it is able to activate at only one half a gallon per minute, which means that less water is wasted than with many units of various brands. This also helps with temperature stability.
It can be installed in several ways – as a direct vent model for indoors, with a vent pipe up to 50 feet with 5 elbows. You have a choice of eight different temperature settings, ranging from 104 degrees F all the way up to 185.
It can be used in parallel with up to three other units to generate more flow. This makes the water heater suitable for commercial applications.
There are two variations on the T-K3:
The T-K3-SP
Here SP means something: special projects. This model, which first came out in 2008, is meant for light residential use. It has a built-in power venting system which you attach to the appropriate venting. It can start heating water at .5 gallons per minute and has a maximum flow rate of 7 gallons per minute. Its four temperature settings range from 113 to 167 degrees F. Unlike other Takagi models, the T-K3-SP cannot be linked, nor is it direct vent convertible.
The T-K3-OS
The T-K3-OS model is the outdoor model, designed for use out of doors. Its the same small size as the other T-K3 heaters, and like them it weighs only 40 pounds. Since it is only installable outside, it is meant for milder climates. It does have a power venting system built in, but this doesn't need to be attached to further venting. Its thermal rating is 83% for both natural gas (NG) and propane (LP). Like the SP model above, it has four temperature settings ranging from 113 to 167 degrees.
Takagi tankless water heaters are popular with buyers on eBay. Here are some listings:
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