boiler piping problem

[Deleted User]

I went to their web site to see if I could find something that might work, but unfortunatley they don't publish the Vision 1 manual that has the information you need. So, I will do my best to paint a picture with words that hopefuly your minds eye can comprehend.

The boiler MUST be piped such that it has its own pump and primary loop. Off of this loop, you will have a set of secondary tees serving the high temp zones. You will need a seperate pump (probably just 1)to serve these zones. Their returns will come back through zone valves. You will need a second set of tees to serve the low temp radiant zones. This too will require a seperate, probably high head pump to service the small bore pipes needs. On the hot supply, you will place a non electric thermostatic mixing valve. Out of the common mixed port, you will place the circulator. The RFH zones will come back through zone valves. Their common return must connect to the cold inlet side of the valve AND the secondary return port back to the primary loop. THe DHW will also need a secondary loop and its own pump.

Now, if I were you, I would seek out the local rep and have them get you Vision 1 certified. This will allow you to pipe the DHW as a parallel load to the boiler primary circuit, and will allow you to do a reset on the boiler based on OSA temps.

Got it? GREAT, now go get'em tiger:-)

ME

PS, Don't forget to buy a brick for The Wall. It needs your support.

ME

Jason_25

boiler piping problem

I have a Munchkin 80mlp boiler that has 3 in floor zones 2 baseboard and 1 indirect zones they are all on zone valves I am looking for the best piping layout as well as controls there is not an outdoor reset either I would like to put a mixing valve on indirect so I can get more hot water and have 2 temps instead of 3 for less controls any suggestions?

Jason_25

help please

Wayco Wayne_2

jason

Are you going to pipe it yourself or are you trying to find a professional. Munchkin piping is challenging even for people that know what they are doing. Was it installed improperly to begin with? Was it purchased over the internet? Background info please.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

[Deleted User]

Follow the manufacturers instructions...

and you will have a reliable, dependable efficient system.

Apply what you think ought to be done based on previous experience with other types of non mod con boilers, and you will wish you'd never installed it.

If you don't have instructions, they are available on line at http://www.htproducts.com/products/munchkin/

Once you've read them, if you still have questions, come back and we'll try and help.

ME

Jason_25

I am piping it myself. I am a heating contractor. the boiler was piped incorrectly when installed. I am having difficulty finding a piping diagram that will work for the application right now it is circulating 180 degree water in infloor loops

Weezbo

a quick fix buh not really the best is...Taco two way IseriesR

mp1969

I'M with ME

> Are you going to pipe it yourself or are you

> trying to find a professional. Munchkin piping is

> challenging even for people that know what they

> are doing. Was it installed improperly to begin

> with? Was it purchased over the internet?

> Background info please.

>

> _A

> HREF="http://www.heatinghelp.com/getListed.cfm?id=

> 255&Step=30"_To Learn More About This

> Professional, Click Here to Visit Their Ad in

> "Find A Professional"_/A_

mp1969

I'm with Mark

Jason,

I would do what ME is suggesting using the indirect as the primary loop (and therefore a buffer tank) with priority. You most likely will need to heat beyond your 120 domestic water temp but you can always step that down with a mixing valve.

If the two other loops can be the same temp then you can use one secondary pump with two zone valves. These would be your secondary part. Depending on your lengths and temp requirements you may need to use mixing valves on both zones and also may want two pumps in lieu of the zone valves.

Even though I can lay out and design systems I rely on a good supplier to design and supply all the components necessary to do systems like you describe. For me it is a time factor as I make more $$$ installing than I do designing. Plus you will have built in back-up if you encounter problems.

Good Luck

Make Peace your Passion
MP 1969