on a munchkin boiler

gerry gill

where do you take the combustion readings from? do you drill and tap/plug a hole in the vent?

Jeffrey Campbell

Good Question

I have been trying to find a better way. So far I have just drilled into the vent stack and used foil tape to cover but now I have been trying to come up with a cleaner and more professional solution. What about a 1/4" nipple and cap? I just need to find out if the flue condensation will eat the nipple? What do you think
Jeffrey

Murph'_5

drill and tap....

to a 3/8 bolt or whatever size your analyzer needs!! could put sum silly-con on the threads.


Murph'

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Guy_5

tapping

Tap the hole with a pipe tap (3/8, 1/4) and use a PVC plug.

Glenn Harrison_2

Here's how I check all pvc vented appliances...

Drill a 5/16" hole. Tap it with a 1/8" NPT tap, don't send the tap all the way in or the plug will be loose because of nylon to plastic. Install 1/8" NPT nylon plug with a little teflon tape, and your good to go.

Source for 1/8" NPT nylon pipe plugs:

http://www.mcmaster.com/nav/enter.asp?pagenum=163

By the way, the useof a metal/steel bolt is a bad idea, as the metal will corode and the bolt could snap off and drop down the pipe.

Also, if you need plugs for regular flue pipe, drill a 5/16" hole, then use part # 9563K83 - 5/16" nickel plated 5/16" hole plug near the bottom of this page:

http://www.mcmaster.com/asp/enter.asp?pagenum=3481

munchkin-man

A 7/16\" hole will provide for a 1/4\" NPT tap then a plastic plug

LES WEGENER

vent tapping

I TAKE A UNIBIT AND DRILL A TAPERED HOLE IN THE PVC VENTING AND WHEN I'M THROUGH TEST I PUT A RUBBER 3/8" RUBBER STOPPER IN THE HOLE

gerry gill

thanks all

for the info, appreciate it.