Recent content by AAnderson

I'm going to add to this topic again. when they first hit our local central california coast market, I liked them but the problem of low flow cut out became a problem and changing boards became a regular task for us. What did become a problem was the issue remained after the 1 year labor ran out...

I'm jumping in here late in this thread. i have been installing tankless for over 30 years and was named the Authorized Service Provider of the year (western region) for Rinnai and have installed Navien as long as they have been available here in northern California. There are several things to...

1 1/4" in hard pipe and the rest in a branch configuration using trac or other brands of flex gas pipe makes sense. Piping today with all hard piping is going backwards.

Any pump with plastic vane, 3/8' X (FITTING SIZE TO HEATER) 1/22 HP is fine. You are going to run the pump less than an hour. Use enough solution to fill the heat exchanger and the equal amount in a dedicated container with a sealed lid. Neutralize the solution when done and discharge where legal.

Never use a cleaning solution that is not food grade rated and this includes muriatic acid and CLR. Use white vinegar, citric acid and or the available solutions for tankless heat exchangers. These are cleaned in place not removed and soaked. Could you post what brand this is and a few...

Why two Navien's? What is your total fixture demand?

It doesn't sound like you've ever programed the recirc function which would explain the high energy cost. Program this function for when you typically use hot water at the furthest point in the house. Insulate your hot water piping too.

They've taken care of the invoice even though it's taken longer than it should have. the service I performed was to replace the unit as it had a leaking heat exchanger and this was not available at the time. Yes they were aware of the problem and David Mills was in on this too.

If it is only 25 yr old, most likely you have a paper and hot mop pan that is not only thick but frail. depending on codes at the time it was installed hard to tell whether it is plastic or CI. You might have a rubber bushing that has to be removed to lift the drain basket out or it was a male...

first is the water in your lav sink hotter than in the shower or the same? I assume the lav is hotter because the installing plumber had not adjusted the disc on the valve after setting trim. this typically sets behind the trim and is more or less intuitive. It prevents you from turning a handle...

You have three openings, one for power and Rinnai's only draw< 3 amps BTW, the other is for the contoller using a single pair 18 AWG and the last more like a grommet, is the access for the poteniometer used to adjust for low fire that electrician always manage to mangle. If you are going to do...

Could you quote your source?

In my area, most that attend installation classes have never even opened a code book, read gas charts much less understand how to calculate for them. I have yet to see another plumber who owns, much less use and understand a manometer or a digital multi meter. Manufactures have a large gap to...

I would replace it with Wirsbo Pex A

Mike, define crud? Do you mean small white particles that looks like broken sea shells? This is calcium that has precipitated out of solution under heat and pressure, a problem is you have hard water. A whole house filter will not remove dissolved solids.