Replace Heat Element and Flush Tankless Water Heater - M18 EP27

Maintaining 18 Episode 27
In the follow-up video, the water heater is restored to full heating capability. New water heater elements are installed, and the heater maintained using a descaler kit. The video shows what happens when the heater is not descaled.

The descaler removes buildup of calcium and magnesium carbonates, and other undissolved minerals, which contributes to the failure of the heating element. "Dissolves inorganic mineral deposits that contaminate unrestricted flow to restore water circulation" (Chromex). The heating element will fail and typically due to overheating—the irony.
The water heater has never been serviced since being put in operation. It was in use for approximately 3-years 3 months before it failed. The failure was due to a corroded heating element in heat exchange L1.
00:00 Introduction, problem definition and recap
00:35 Removing heating elements
01:23 New heat element preparation and Install
02:47 Opening Descaler Kit (never used one before--it did not look like the photos)
03:18 Connecting hoses to service valves
03:42 Mixing descaler
04:00 Subscribe
04:04 Connecting the pump
04:38 Service vales set to cleaning setting (ran pump for 45 minutes)
05:05 Flush unit with water (about 20 gallons--75% overdone)
05:40 Service valves set to normal operation
05:50 Final comments
The Day is Won!
Descaler kit:
Chromex Tankless Water Heater Flush Kit with Certified Liquid Descaling Solution and 1/6 HP Extra Strength Pump

Replacement heat elements:
Ecosmart HE 90240 ECO 27
Heating Element Compatible With Eco 18, Eco 24 & Eco 27
It is a 9 Kw Eco Heating Element and requires a 240V energy supply.

The tank-less water heater make is Eemax, "evolving hot water." The Model number is HA036240. The internals is the same as the Ecosmart brands. Trade or common model name is Home Advantage II. https://www.eemax.com/
Descaler kit used:

Two episodes are leading to Episode 27.

In Episode 22, the tankless water heater failed. This was due to a damaged Flow Control Meter. Kofi learned what not to do to resolve issues. See "Tankless Water Heater Flow Meter Damaged - M18 EP22" using this link https://youtu.be/r4Nu2vqhQH0.

Shortly after and In Episode 24, the problem with the water heater failed, and the problem is diagnosed.
See "Thankless Tankless... Tankless Water Heater Issue Diagnosis - M18 EP24" using this link https://youtu.be/fL-NgGRuVS0.

Irie

Видео Replace Heat Element and Flush Tankless Water Heater - M18 EP27 канала Maintaining 18