Search: Posts Made By: ZL700
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Replies: 11
Views: 1,368
Posted By ZL700

I can see what appears to be the return line on...

I can see what appears to be the return line on the back side of the equalization pipe with the electronic water feed appearing to be tapped into that so that part may be right (Black Tee, copper...
Replies: 12
Views: 7,070
Posted By ZL700

Sarcasm or concerned for homeowner safety? ...

Sarcasm or concerned for homeowner safety?

Because in another post you wrote:
Replies: 28
Views: 5,282
Posted By ZL700

It's in the installation manual, or call a...

It's in the installation manual, or call a heating pro to do is suggested if your over your head. I suspect you might be or you would have located the answer by now in the book.
Something's are best...
Replies: 28
Views: 5,282
Posted By ZL700

If the circuit board was set properly, it with...

If the circuit board was set properly, it with read thermostat on the Navien remote next to the radiator icon (top row, right hand corner). Once that's done and a boiler signal is sent from
the ...
Replies: 28
Views: 5,282
Posted By ZL700

Your partial system pictures doesn't show enough...

Your partial system pictures doesn't show enough to get an idea of your control system.
It can maintain heat full time as it appears to be doing now, or be switched by an external source like a...
Forum: Water Heaters
03-05-14, 11:08 AM
Replies: 4
Views: 28,152
Posted By ZL700

Enigma mentions some valid points but is way off on others

Gas fired appliances and electric water heaters for that matter must have HUD approval. No HUD is not a certification agency, but I never said that either.

Most tankless electric water heaters...
Replies: 28
Views: 5,282
Posted By ZL700

You don't use a 12# PRV on the combi auto feed....

You don't use a 12# PRV on the combi auto feed. it cant get the required pressure to fill.
Turn it way up or remove it

Cant say I have ever seen a RPZ BFP installed upside down, that's a first!
Replies: 28
Views: 5,282
Posted By ZL700

Post a picture of the install Sometimes its as...

Post a picture of the install
Sometimes its as easy as the installer failed to put in a proper expansion tank or tank air charge on the heating side or used check valves preventing the expansion...
Replies: 21
Views: 5,326
Posted By ZL700

When you only have a 150,000 BTU boiler (not...

When you only have a 150,000 BTU boiler (not saying its sized right, I cant make that determination from my keyboard) and it's time is divided between trying to heat the domestic hot water (5...
Replies: 29
Views: 14,336
Posted By ZL700

According to PVC Pipe and fitting manufacturers,...

According to PVC Pipe and fitting manufacturers, Sch 40 PVC has the following ratings:
Maximum Temperature: 158F, 70C
Minimum Temperature: -13F, -25C
Melting Point: 176F, 80C
Tensile...
Replies: 29
Views: 14,336
Posted By ZL700

Should be # 8 of 8 On (UP) for high temp

Otherwise flue temp sensor downfires boiler to protect vent

Now you cant do this Faatim, unless the venting is changed to high temp.

Who installed this, can they read?

Pg 37...
Replies: 29
Views: 14,336
Posted By ZL700

Found it from their site

The manifold serves as a hydraulic seperator

http://www.navienamerica.com/__DATA/Tech/2013/6/18/CH%20Application%20Drawings%20v.1.pdf
Replies: 29
Views: 14,336
Posted By ZL700

Looks to be piped right using the Navien manifold accessory

But it's vented with PVC. Since it's not vented with CPVC or polypropylene I would question if the DIP switch programming is set to high temp operation.

Also what water temp did the old boiler run...
Replies: 11
Views: 1,301
Posted By ZL700

It's 436S Ferritic, or nonhardenable stainless...

It's 436S
Ferritic, or nonhardenable stainless steels, are classified in the 400 series, usually with 10% to 20% chromium content, and are normally specified due to superior corrosion resistance and...
Replies: 58
Views: 46,960
Posted By ZL700

$50? That might buy the 2 1-1/2" dielectric...

$50?
That might buy the 2 1-1/2" dielectric unions
What about all the ball valves, other unions, purge ports, relief valves and copper and fittings?

I see a lot of projects with these used in...
Replies: 58
Views: 46,960
Posted By ZL700

2nd page of the manifold sheet

2nd page of the manifold sheet
Replies: 58
Views: 46,960
Posted By ZL700

I found the accessory manifold

I found the accessory manifold
Replies: 58
Views: 46,960
Posted By ZL700

There are many types of primary/secondary piping...

There are many types of primary/secondary piping applications but most are usually only familiar with the one first used. This is the one where the boiler is the primary flow looping around from...
Replies: 58
Views: 46,960
Posted By ZL700

NJ, I don't totally disagree with you about...

NJ,
I don't totally disagree with you about their manual, having been to Asia and Europe many times relating to boiler products, I have discovered American installers tend to need everything spelled...
Replies: 58
Views: 46,960
Posted By ZL700

The CH can have a limitation of around 5 GPM...

The CH can have a limitation of around 5 GPM internal boiler circulation along with
limited external piping. That's why loads above 50,000 BTU's or long distances require primary/secondary piping....
Replies: 58
Views: 46,960
Posted By ZL700

The Navien CH-240 (199,000) has a minimum fire...

The Navien CH-240 (199,000) has a minimum fire rate of 20,000 (10 to 1 modulation)

The high fire rate on combis is used to produce an acceptable domestic flow (4.5 GPM at a 77 degree rise)
...
Replies: 58
Views: 46,960
Posted By ZL700

The Navien CH combi is a modulating condensing...

The Navien CH combi is a modulating condensing boiler with 10-1 turndown.
It also has a feature that allows you to cap the maximum fire rate as low as 30% of its maximum fire rate. For that reason,...
Replies: 27
Views: 5,980
Posted By ZL700

To the OP, too much to diagnose over the...

To the OP, too much to diagnose over the Internet,does the pilot light?
A heating technician with a meter and a knowledge how to use it is the best place to start.
Forum: Water Heaters
12-01-12, 06:56 PM
Replies: 9
Views: 6,052
Posted By ZL700

Anyone else noticing Guy's chimney looks bad?

Anyone else noticing Guy's chimney looks bad?
10-06-12, 04:17 PM
Replies: 6
Views: 2,833
Posted By ZL700

Drill or punch a couple holes into it and use a...

Drill or punch a couple holes into it and use a pliers inserted into holes and unscrew
Showing results 1 to 25 of 158
 


 
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