Electric On-Demand Tankless Water Heaters

[Mack]

This is a link to a thread, in a plumbing web site, about the annual flush of tankless water heaters. It's a gas heater, but the flush procedure is the same. You might as well throw the breaker open on an electric model, and be careful not to splash.

Tankless flush - RIDGID Plumbing Forum, Woodworking Forum, Power Tool Forum

Thanks for the link wuarhat. I'll be setting up that rig for myself.
Mack.

 

[Daniel10]

CB, if you can control the temperature somehow: Our First Solar Hot Water Experiment - Solar Thermal Hot Water - Solar Water Heater - Flat Panel Collector ? ByExample.com
It can be done. You can use that hour of no electricity to work on a DYI system )

 

[bayaguanaman]

Again gents thanks !. Can you advise me if I could install a breaker on this feed to the HW tank, I have 2 "hot" 8mm wires taken from the main ring whch supplies the a/c, these do have breakers installed at the DB, but reading the posts again, I'd like to have belt & braces on the tank, by installing a breaker to each supply and also by locally dropping an earth rod into the ground as far as the water table (1.2m +/-) from FGL or 1.8m from FFL. Could I do this installation and what type of breaker would be best. I am indebited to you for this information.

Thanks FM

 

[wuarhat]

The answer is quite simple.

The transformer on the pole puts out 220vac (+/-) and is center tapped.

Connecting from side-to-side from the transformer gives you the 220vac (+/-)
Connecting from either side to the center tap gives you 110vac (+/-)/

The center tap is ground, the ground is not used to obtain the 220vac.

(vac: Volts A/C)

SantiagoDR

I thought the center tap was neutral.