Munchkin install questions

Craig Bergman

primary/secondary piping and closely spaced tees.
The bypass needs to be set for the smallest zone when it is calling.

Bergy

Larry Savino

Well i am new to munckins and plan on installing one in my own home to replace a weil Mclean boiler


My company is also getting more involved with the munchins in a retro fit replacement market(we are on the east coast and our fuel cost's are disgustingly high

anyways I know the best way to install it would be as a primary secondary piping, But I am trying to install it as a retro fit, meaning the average boiler room we go into is limited for space, and its not so easy to convert an existing boiler room over to primary secondary piping.

In the installation manual it shows a retro fit with a ball valve used as a flow control back to the boiler, my assumption is that with the 010 installed and only one zone calling will will have too much flow and maybe some noise problems or worse.

So If I use a ball valve how to I know what flow to adjust it to?

Is there a better way of doing it? beside primary secondary piping.

It may sound crazy but I am trying to figure a way to install it with out the guys being there all night and still get the maximum potential from the boiler.

I am also trying to make it more affordable for the customers.

Your advice is appreciated

Guy_6

Bypass

I believe that a differential pressure bypass valve instead of the ball valve will ease your worries. It will by pass the excess flow back to the boiler based on the pressure put upon it. Primary/Secondary is still probably the better way to go IMHO.
Honeywell and Danfoss are two MFG that come to mind for the bypass valve.

Craig Bergman

Carefully read

> Well i am new to munckins and plan on installing

> one in my own home to replace a weil Mclean

> boiler

>

> My company is also getting more

> involved with the munchins in a retro fit

> replacement market(we are on the east coast and

> our fuel cost's are disgustingly high

>

> anyways

> I know the best way to install it would be as a

> primary secondary piping, But I am trying to

> install it as a retro fit, meaning the average

> boiler room we go into is limited for space, and

> its not so easy to convert an existing boiler

> room over to primary secondary piping.

>

> In the

> installation manual it shows a retro fit with a

> ball valve used as a flow control back to the

> boiler, my assumption is that with the 010

> installed and only one zone calling will will

> have too much flow and maybe some noise problems

> or worse.

>

> So If I use a ball valve how to I

> know what flow to adjust it to?

>

> Is there a

> better way of doing it? beside primary secondary

> piping.

>

> It may sound crazy but I am trying to

> figure a way to install it with out the guys

> being there all night and still get the maximum

> potential from the boiler.

>

> I am also trying

> to make it more affordable for the

> customers.

>

> Your advice is appreciated

Craig Bergman

Carefully read

and follow the install instructions!!!! Most of the problems with the Munchkin has been from inproper installs.

With few exceptions, primary/secondary piping is a must.
The boiler needs a certain amount of water pumped INTO it at all times to work.

Again...READ,READ,READ....

Bergy

Larry Savino

Thank you sir

I will look for the valve in my Honeywell book today I will take before and after photos ,I have to go away today to a hearth products show and will be home on Saturday hopefully I will be doing the replacement this coming Sunday.

Larry Savino

Thank you I am actually looking at page 26 of the installation manual.in the notes area it says
" adjust floww bypass valve for minimum flow rates in any operating mode"

Then
it show
"Munchkin model 140m : 5 gpm

I am just not sure how (unless I can find a self regulating flow by-pass) how i would go about testing to see what the actually GPMS are with the smallest to the largest zone calling

I am using an 010 pump