SCR2 N-120
The SCR2, work horse of the Titan line of products, has been a satisfactory electronic tankless heater throughout the United States. Used with great satisfaction along the sunbelt or southern portion of the United States, the N-120 can be used in multiple configurations to provide a greater heat rise for our customers in the colder, northern areas of our country. One N-120 Titan can be used in applications supplying one shower or possibly a faucet and a shower with water restricting shower heads of 1.5 gpm. The heat rise for the N-120 is around 95o F in one gallon per minute and 64o F in 1.5 gallons per minute. So, you can see that the heat rise in a single Titan N-120 is restricted to less than 1.5 gpm if the incoming water temperature is 45-50o F. The solution in the past could be resolved with different Titan heaters and configurations of those heaters. For instance:
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Two Titan heaters can be arranged in parallel where the incoming cold water pipe is bifurcated into a supply for each heater. Shut off valves on each cold water supply and each output side of the hot water supply assures a backup to the overall system. If one Titan N-120 fails and needs repair then the second Titan N-120 could be used as a single heater for the home. The parallel arrangement or configuration allows a greater flow or volume on the outlet or hot water side. Each requires a separate two pole, 60 amp circuit breakers. You should have a two hundred amp service for this arrangement. Use the heat rise chart vs. gallons per minute to help evaluate your needs or situation. Use of a water restricting shower head with as little as 2.0 gpm is very useful.
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Another configuration uses a Titan unit such as the N-120 SCR2 in tandem with a smaller SCR2 unit. The smaller unit can be a "pre-warm" heater which passes along warmer water to be further heated by the next in-line N-120, etc. Again, the use of water flow restricting devices help slow the flow of water through the heaters to give a better heat rise to that water.









