quote:

Originally posted by BreakerBacker:
I have to admit that during installation I had a few issues, but the rep and Munchkin tech support helped out and the unit is operating as well as can be exected. I hate the way that Munchkin does not give vision control access out to regular ppl that buy their product, but that is the way it goes. Couldn't buy a comparable unit for anywhere near the $$$. Now that it is installed it is going great. I have the unique oportunity to build an identical house with same floor plan, north south oriention and heat loss, a block away. This home will have a conventional plain radiant system with standard water heater vs. the munchkin w/ ORC and an indirect. Both systems run on propane. I finally will get definitive numbers. I might even build another one of these "test samples" with all variables the same only altering the heating and cooling system by going with a combo roof top propane fired heater/cooler. We will have to see how this turn out.

Greg.

quote:

Originally posted by tdechill:
I'm interested in installing a Munchkin oiler, Vision computer and Superstor in my home in upstate NY. Who sells them to homeowners in the NE? Thanks

quote:

Originally posted by greenmountain:
We live in VT, and last month had a Munchkin 140M natural gas boiler installed. Since then, we've had an ongoing problem with the unit going into short periods of loud vibrations, lasting 40-50 seconds, with the whole unit vibrating like an old-fashioned hotel massage bed. Soemtimes it happens every 5 minutes or so, for an hour or more on end; other times it's fine for a few days. Our heating contractor -- who we found on the mfgr's website and is "vision certified -- has been out to our home twice in last 2 weeks. He says it has something to do with the fuel / oxygen mix, and tried adjusting fuel-oxygen mix screw ("throttle?"). But after he left, the the vibrations came back, They came back out today, and tried adjusting it some more, but it came back. Apparently when it's adjusted with the flame color not pure blue (i.e, w/ some orange) the vibrations doesn't occur, but when the flame looks right (nice and blue), the vibrations happen. Our contractor says he's installed many of these units in propane applications w/ no problem, but that this is only their 2nd NG installation and the other also has this vibration problem. Does anyone have any experience with this problem?

quote:

Originally posted by sweed:
I would suggest looking at your supplyer befor you buy. I am in the middle of a mess with munchkins Oregon distributor, for two weeks they could not make a decission as to what to do about shipping dammage and whether the boiler could be changed over to propane. It was ordered propane but shipped natural gas now they want a 25% restock and this was bought through a large name supplyer. I am not done with this one, but the point is what ever brand you go with make sure thay provide good support, now, durring warrenty, and down the road. Oh and for me, I won't be using munchkin again unless something changes with their OR reps. good luck!

quote:

Originally posted by SallyShears:
Having problems with a Munchkin boiler for radiant floor heating in a vacation house. Propane, in-ground tank. Cold climate.

Since the installation 16 months ago, we have been plagued by F10 lockouts. This is a vacation house, only used winter weekends, so this is a disaster. The boiler has shut-down and locked-out 20x last season, 10x this season including 5 of last 6 nights.

What is F10? The Munchkin manual says, "This code appears if the flame is going out while the burner is on and this happens more then 4 times in one heat demand." Requires a manual reset.

The boiler has good periods and bad. Ran from mid Nov to late January with no problems, and now locking-out just about every night, usually in the middle of the night (I have a web-cam monitoring the control panel). Yes, I think the lock-outs are correlated with cold, but on the other hand we had some very cold nights in the Nov-Jan period when the boiler ran fine.

Possible Cause: Freeze-up of propane regulator
- In one lockout episode (mid morning on a very cold day) I was able to observe that the Rinnai tankless hot-water was not getting gas. From this I conclude that our problem is intermittant gas supply, not lack of capacity in normal conditions.
- Thinking moisture in tank, we've had methanol injected
- Replaced house regulator
- Replaced regulator at the propane tank

Any suggestions? Have others had problems with a Munchkin locking-out F10? Seems like a problem for a vacation house.

-- Sally

quote:

Originally posted by greenmountain:
We live in VT, and last month had a Munchkin 140M natural gas boiler installed. Since then, we've had an ongoing problem with the unit going into short periods of loud vibrations, lasting 40-50 seconds, with the whole unit vibrating like an old-fashioned hotel massage bed. Soemtimes it happens every 5 minutes or so, for an hour or more on end; other times it's fine for a few days. Our heating contractor -- who we found on the mfgr's website and is "vision certified -- has been out to our home twice in last 2 weeks. He says it has something to do with the fuel / oxygen mix, and tried adjusting fuel-oxygen mix screw ("throttle?"). But after he left, the the vibrations came back, They came back out today, and tried adjusting it some more, but it came back. Apparently when it's adjusted with the flame color not pure blue (i.e, w/ some orange) the vibrations doesn't occur, but when the flame looks right (nice and blue), the vibrations happen. Our contractor says he's installed many of these units in propane applications w/ no problem, but that this is only their 2nd NG installation and the other also has this vibration problem. Does anyone have any experience with this problem?