Turn on circulation pump and.

How to descale noritz tankless water heater. 1 brass service valves for tankless water heaters. Turn on the tankless water heater and let the pump move the solution through the cold water valve. Assemble your own kit with these parts.

Your tankless heater is set to a high temperature: Disclaimer:this video is being revised. In this post, we will look at how to perform tankless water heater internal maintenance.

Bonus feature includes how to make your own descale kit. This video is a how to on performing annual maintenance or descale, flushing, flush of a tankless water heater. The cost of using the boiler as opposed to a tank or tankless water heater depends on the boiler's efficiency rating.

The same principle applies to getting rid of scale.”. Any unauthorized use of this manual. Please use this video as a learning tool.

Put the vinegar or detergent solution in a bucket and use the pump to circulate the cleaning solution through the water heating unit. Filling bucket with a cleaning solution. This instructional manual is only intended for use by a qualified service professional or authorized noritz service representative.

Make sure to turn the gas valve off and unplug the unit. Then attach your hose to the pump and place the pump into the bucket. On the unit, the red isolator valve indicates the hot water side, while the blue isolator valve indicates the cold water side.