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Adding electric hot water heater to help tankless
![Will82](https://secure.gravatar.com/avatar/6b4174bca7d8d625ad105a3768259a53/?default=https%3A%2F%2Fvanillicon.com%2F12f5ef1535766211604840bffb43a2d4_200.png&rating=g&size=200)
Will82
Member Posts: 41
I have installed a new Combi boiler lochinvar noble it works good once the water gets hot but it takes too long. The boiler does have a preheat option but it does make the boiler turn on and off every 30 minutes. I was planning on adding a 40 gallon hot electric hot water tank after the tankless to help it. But I was wondering if there is any other options.
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Comments
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You may be able to use a storage tank and heat it with the tankless heat exchanger.
Does the manual show a recirculation setup?
A full size tank kinda defeats the purpose of a tankless0 -
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a 40 gallon storage with a combi???? did you install it right??? pics of the install could shed light on why it takes so long to heat, my first guess is you undersized it for your needs"The bitter taste of a poor install lasts far longer than the JOY of the lowest price"0
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What do you mean it takes to long to get hot water?
The Lochinvar Noble delivers hot water right away.
Go to the furtherest shower and turn it on. Time how long it takes to get hot water. If it takes 30 seconds, 1or 2 minutes this is not the fault of the combi boiler. That is just how far your shower is from the combi boiler. The Noble boiler is designed to maintain 130 degrees in the heat exchanger to produce hot water right away.
Check with Lochinvar to see how they recommend to install a domestic hot water recirculation pump system with aquastat and timer. Taco and Grundfos offer these systems. No waiting for hot water. No water waisted and sent down the drain just waiting for domestic hot water. There are recirculation systems that use a return line and ones that do not need a return line.
Does your Noble combi boiler have a mixing valve on the domestic hot water supply?
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Look in the Noble installation book there are drawings on how to install a domestic hot water recirculation system to get domestic hot water to your faucets faster and waist lest water going down the drain waiting for domestic hot water.
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