What is the minimum ground clearance for an OD unit?
At least one foot of clearance is recommended for servicing purposes. ClearanceA set distance required for proper and safe operation of the heater.
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What constitutes a qualified installer?
- Luis
A qualified installer requirement will vary according to their respective states, county or city. Make sure the installer you choose is a licensed professional and has knowledge of tankless water heaters. The first step in locating a qualified installer in your area is to use our Contractor Finder. In general,…
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My heater shuts off while I am in the shower or using the sink in the kitchen, why? There are no error codes on my remote.
- Luis
This type of problem is typically caused by low water flow. Noritz tankless water heaters have a minimum flow requirement (0.5 gpm for most models.) If this flow requirement is not met, the heater will not fire. If you heater shuts off during usage, here are a few things to check:…
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Is a battery backup supply recommended with your units?
- Luis
Battery backups are not a required item when installing or using a tankless water heater, however they can be a nice addition in certain situations. Battery Backups (also called a UPS or Uninterruptable Power Supply) are most commonly used with computers and networking equipment. The purpose is to give the…
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Is the 8-10 gallon storage tank necessary for a recirculation system?
- Luis
It is not necessary; the 8-10 gallon storage tank alleviates cold water sandwiching effects that occur in some installations. It is meant for comfort purposes only and is not necessary for correct operation of a recirculation loop. RecirculationThe process of keeping the hot water supply line warm by circulating water,…
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What is the maximum flow rate allowed through the H2Flow?
- Luis
Although the H2Flow is capable of serving up to 10 gallons per minute water flow, the ideal maximum flow rate that can be run through the H2Flow for most effectiveness is 6 gallons per minute. The H2Flow cartridge should be replaced every 2 years. See spec sheet and installation manual…
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Why does my water heater turn on momentarily sometimes when no one is using hot water or when someone flushes the toilet?
- Luis
This could be an issue with the water pressure coming to the heater or a plumbing issue such as cross piping. If water is moved across the flow sensor in the unit, it may momentarily respond to it. A licensed plumber can help identify this issue. For further technical assistance…
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Can I use PEX piping for my domestic hot water service?
- Luis
Generally speaking yes you can however please refer to your local codes.
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Can Noritz Tankless Water Heaters be used as pool heaters?
- Luis
A Noritz water heater cannot be used as a pool heater due to the chemicals that can be harmful to the copper components within the unit. Although a pool heater might be necessary in order to heat up the pool quickly, a secondary heat exchanger specifically for pool applications (made…
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What does the term “temperature rise” mean?
- Luis
The difference between the incoming ground water temperature and the set temperature of the tankless unit. For example, if your tankless unit was set at 120°F and your incoming ground water temperature was 50°F your temperature rise would be 70°F (120-50=70). Temperature rise is used to determine BTU size of…