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Tankless Hot Water Heaters, Efficient, Effective, Endless.
Posts tagged temperature rise
Noritz NRC111
Nov 9th
The Noritz NRC111 is a condensing tankless water heater. This is the only condensing tankless that Noritz makes and it produces 11.1 gallons of hot water per minute.
The Noritz NRC111 utilizes a dual heat exchanger, which is made from a fusion of stainless steel and copper exchangers. The 100% stainless steel component captures the residual heat from the exhaust temperature to preheat the incoming water before it runs through the main copper heat exchanger. This results in dramatic reduction of carbon dioxide and increases the tankless heater’s efficiency level to over 93%! Another benefit of this technology is lower exhaust temperatures, which means less costly PVC can be used for its venting. A PVC adapter is built into the Noritz heater for easy installation.
Specifications
Condensing technology – The most advanced Noritz unit, over 93% efficiency
Combi-system set-up - Open loop system functionality for both potable water heating and space heating combination system.
Safety lock out - Default max. 120 degrees (refer to owner’s manual for higher temp).
Dual flame burner – Minimizes temperature fluctuations.
Fully modulating – Automatically adjusts burner level accordingly.
Dual heat exchanger – 100% stainless steel corrosion resistant heat exchanger fused with a commercial grade copper heat exchanger.
Turbo Flow – Up to 11.1 GPM @ 35 degree temperature rise (8.4 GPM @ 45 degree rise).
Quick Connect – Doubles output by connecting 2 identical tankless units with a single cable.
Multi System - Up to 24 units can be linked and operated by a single system controller.
Direct ignition – No standby pilot light.
Thermal fuse – Automatic overheat protection system.
Resin coated PC board – Increases tankless durability and protection from elements.
Automatic air regulator – Monitors the Noritz tankless internal temperature/maximizes burner efficiency.
Neutralizer included - Built-in neutralizing system for condensation.
Request a Home Evaluation – See if a Noritz tankless can be installed in your home.
Solar and a Tankless
Feb 19th
Solar And A Tankless Heater
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There is starting to become a buzz around solar hot water systems. If you have a good, knowledgeable contractor a solar water system can work quite well with a tankless hot water heater. 
Here are a few of the advantages that you can expect when combining the two systems.
1. The preheated water coming from the solar water heating system will increase the flow of hot water out of a tankless unit. The reason is due to the fact the tankless has to heat pre-warmed water reducing the necessary temperature rise. The amount of hot water a tankless can provide depends on the input temperature. The greater the temperature rise necessary the slower the water can travel through the heat exchanger and the slower the output flow. Incoming water at 45F vs. 70F vs. 100F will have very different results on the output of a tankless system.
2. The water is already warm or even hot from the solar rays before entering the tankless unit and therefore the added wait time associated with a tankless unit can be reduced or even eliminated.
3. Its important when combining a tankless and solar water heater to consider a tankless unit that recognizes incoming temperature as well as outgoing and is able to fully modulate its burner (therefore only burning the necessary amount of gas to raise the temperature to the appropriate amount).
4. With the right tankless unit and an appropriately sized solar system you may find that your tankless rarely need to run. In fact some people have found that their gas bills are now costing only a few dollars as opposed to a few hundred dollars.
These Solar systems can be a little tricky in Ontario and Toronto as we have winter and the solar system (if it fails) could experience freezing. This would rupture the thermal cells in the collector rendering it ineffective. It may be necessary to use a glycol system to prevent freezing if electricity goes out. Your contractor should be able to provide all necessary info, or fill out the contact form and we can help.
Heating Water with a Tankless in Ontario
Feb 10th
Buying a Tankless in Ontario |
So you’re thinking of getting a tankless water heater and you live in Ontario, that’s good these systems are excellent for the environment and your bottom line. Most…. Actually all of these systems are designed outside our country and thus outside our climate. You should take some extra precautions before purchasing a system.
If you take a look at the map you can extrapolate a rough estimate of ground water temperatures for Ontario. Sorry there doesn’t seem to be an accurate map of Ontario’s ground water values anywhere. I would use 35-37 Fahrenheit as a good starting point; your incoming water will never be much colder than that. The tankless water heater you choose will need to warm the water up from your starting temperature to your desired level. If the incoming water is 35 and you want hot water to be 110 your tankless needs to heat the water 75 degrees. This is quite a relatively significant increase and to produce this level of rise requires the water to pass through the heat exchangers at a slower rate.
In the summer Ontario ground water is often between 50 and 65 Fahrenheit, to reach your desired 110 degree level the water only needs to be heated 45 degrees. Sensors in the tankless measure incoming and outgoing temperature levels and adjust flow rates accordingly. Thus a system rated to provide 5 GPM (gallons per minute) with only a 40 degree temperature rise will likely only produce maybe 2 GPM in the winter when water temperatures are really low.
When you’re purchasing a new tankless for your home make sure you pay close attention to the tankless heaters specifications. Make sure that it is able to provide an adequate flow rate when your incoming water temperatures are at the lowest in the winter.
