F05 Answers

John Starcher_4

Thank you for posting this!!!! HTP rocks!!!!!

Starch

Chuck Shaw_11

F05 Investigation

On Friday August 2nd, in an effort to assist the installing contractor, John Sawyer of Heat Transfer Products visited the job site mentioned in a previous post (See Munchkin F05).

John thoroughly reviewed the installation; the piping was an excellent representation of a parallel primary/secondary set up. Even if not as specified by our manual, it was found that the circulator sizing was not the issue. The way this was determined was by looking at the inlet and outlet temperature from the boiler’s status menu, and they could then see the temperature differance was well within a range that John was comfortable with. A review of the fault history on the installation was done through John’s laptop, and he found only the 4 F05 (high temp) codes.

What was found to be the most likely issue was the possibility that DHW circuit of the Vision 1 installation was able to trap air. The contractor resolved this with the installation of an additional air elimination device. The other issue that was looked at was the possibility that the internal flow check in the circulator on the boiler loop was stuck open; if this were to happen, the DHW circulator would pump through the boiler loop, pump through the closely spaced tees on the primary loop and back through the coil on the indirect, bypassing the boiler. The check was removed, cleaned and returned to its original location to hopefully eliminate this as a possibility.

I just wanted to let you know the possible cause, and the fix.

Chuck Shaw
Heat Transfer Products

Brian_18

I'm Impressed

Very admirable of HTP to step to the plate and proactively work to solve the home owner's difficulty. Can't ask for better factory support. (BTW I'm a home owner, so I don't have any axe to grind here)

Steve Ebels_3

Ah

> On Friday August 2nd, in an effort to assist the

> installing contractor, John Sawyer of Heat

> Transfer Products visited the job site mentioned

> in a previous post (See Munchkin F05).

>

> John

> thoroughly reviewed the installation; the piping

> was an excellent representation of a parallel

> primary/secondary set up. It was found that the

> circulator sizing was not an issue. The way this

> was determined was by looking at the inlet and

> outlet temperature from the boiler’s status menu,

> and they could then see the temperature

> differance was well within a range that John was

> comfortable with. A review of the fault history

> on the installation was done through John’s

> laptop, and he found only the 4 F05 (high temp)

> codes.

>

> What was found to be the most likely

> issue was the possibility that DHW circuit of the

> Vision 1 installation was able to trap air. The

> contractor resolved this with the installation of

> an additional air elimination device. The other

> issue that was looked at was the possibility that

> the internal flow check in the circulator on the

> boiler loop was stuck open; if this were to

> happen, the DHW circulator would pump through the

> boiler loop, pump through the closely spaced tees

> on the primary loop and back through the coil on

> the indirect, bypassing the boiler. The check

> was removed, cleaned and returned to its original

> location to hopefully eliminate this as a

> possibility.

>

> I just wanted to let you know the

> possible cause, and the fix.

>

> Chuck Shaw Heat

> Transfer Products

Steve Ebels_3

Ah yes!

Nothing like a hands/eyes on visit with consideration given to the fact that the devil is often in the details. Nice work!

Couderay

HTP

Ah what it's all about. HTP has been there for me every time they been needed.

Pinball