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Joined on January 5, 2013

Last Post on April 3, 2014

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Probably Not

@ April 3, 2014 10:09 AM in Value of converting oil/steam to modcon gas?

running at 85% on the old boiler, closer to 80-Boiler was 85,000 BTUs net, I only need 28,000-My case is fairly typical, most in place boilers are way oversized. My savings are real, and maybe understated-Also, I'm saving huge amounts on DHW, switched to a 20 gallon tank, plenty of water, recovers 10 degrees in about 8 minutes-

Back to the Original Question-

@ April 2, 2014 1:39 PM in Value of converting oil/steam to modcon gas?

I just converted a small house from oil to a propane fired modcon. I am using less propane than I was oil, and thats after this colder than normal winter. So if you factor in the price of propane, $2.75 vs oil, $4-, my savings are fantastic, somewhere around 40%-I was hoping to break even, and be happy with the boiler moved out of a basement which super storm "Sandy" filed with four feet of water. Pleasant surprise-

I Assumed the Only

@ March 31, 2014 1:42 PM in Modcons in Closets-

reason for the ventilation might be the temperature of the closet. Triangle Tube asks that the ambient temperature not become to high. What would a reasonable maximum temperature be? If the closet stays at 85 degrees or so, is this reasonable? The temperature inside the boiler cabinet is certainly higher than this ? Never could it become high enough to melt the poly exhaust pipe.

I just would like to be able to leave the door shut at times to quiet the thing down when it does it's pre and post purges. Boiler is in a den, not a bedroom, and operates at a max of 60% by my choice, not some problem.

No Need to Get Nasty-

@ March 31, 2014 12:30 PM in Modcons in Closets-

Units like these installed in bedrooms had to be in closets with sealed, solid , air tight, self closing doors at one point. Now, the lochinvar manual is calling for requirements that fit units that draw their combustion air from the interior space.

I'm not an idiot, this is confusing- The TT manual has no such ventilation requirements for closet installed units, as far as I can see- So-

Lochinvar WH55

@ March 31, 2014 9:56 AM in Modcons in Closets-

Never firing at more than 60%-

A Little More Research-

@ March 29, 2014 12:11 PM in Modcons in Closets-

and it looks like codes may require just the opposite for bedroom and bath locations, no ventilation, and sealing of the door. Well, now I'm really getting confused. All air for combustion is from the exterior, why would Lochinvar be requiring room air to be to be added to the closet? Maybe heat buildup?

Lochinvar's Language Is

@ March 28, 2014 12:22 PM in Modcons in Closets-

from the code that covers appliances that take their combustion air from the interior, so I question the requirements-Local's are going to tell me to go by national code, which I am having trouble finding reference to sealed combustion units.

Modcons in Closets-

@ March 28, 2014 11:51 AM in Modcons in Closets-

Are the ventilation requirements different than those for non direct vent units?

I've Found Water Temps

@ March 21, 2014 10:26 AM in Please critique this design

below 120 degrees in slantfin, just don't seem to heat that well. I have been running nothing lower than 120, or higher than 140, seems to work well for me. I get run times of 1/2 an hour, or so, off maybe 40, 45 minutes. I know this isn't what the guys who want there modcons to always run like, but it works for me.

I also think if you go with the TT 60, not the Loch 55, yo will have problems with the TT not modulating down enough-

If You Underset the Temperature

@ March 6, 2014 3:01 PM in TT PE110 longer run times

of the supply at any point, you risk having a system that never catches up, thus always running, right? Therefore, every system has to be run on supply water that is at least a little hotter than actual BTU demand to prevent this. It just seems unpractical to try and hit the 101% mark, at all heating points thru out the course of any given heating day, if not impossible. I think for most of us, reasonable run times of 1/2 an hour or so, are much more realistic.

Is it a Proven Fact

@ March 6, 2014 1:03 PM in TT PE110 longer run times

that having your system always running is the most efficient way to heat a space? A lot of people seem hung up on trying to reach this goal, but is it the way for every modcon install to work for long, or short term dollar savings?

That Puts You

@ March 5, 2014 4:36 PM in Fuel use question?

at 50%-right in the middle-


@ March 5, 2014 3:19 PM in Fuel use question?

of homes are more efficient than yours-but you are better than 9.8%-so you are in the bottom 24.5%-

Seems About Right-

@ March 5, 2014 2:49 PM in Fuel use question?

If I remember right, this puts you in the 88% group-only 12% of homes have a better efficiency than you-

New, In the Box Taco 007-VDTF5

@ February 20, 2014 3:07 PM in New, In the Box Taco 007-VDTF5

New, unopened box, Taco 007-VDTF5 variable speed circulator. Free shipping to lower 48 states-First $140-Pay with PayPal or credit card-Call 401-348-6500

Replacing the Fan

@ February 19, 2014 10:47 AM in How Much Vibration In a -

fixed the problem-fan must have been made out balance-nice and quiet, vibration is just about gone-Lochinvar was very good about resolving this issue, many thanks to them-

Yes, If You

@ February 17, 2014 11:34 AM in is it worth converting from oil to propane ?

can go with a modcon, you have enough baseboard, and your boiler needs replacing anyways. I did this and am using fewer gallons of propane than I was with oil, and I am paying a dollar less per gallon for the propane.

Stupid Me-

@ February 14, 2014 10:34 AM in DHW Indirect Air Elimination

After reading icesailor's and hot rod's suggestions, it became obvious that I had screwed something up. Thinking about the fact that the condition got worse after higher operating temperatures, I keyed in on the expansion tank. It was brand new, and large enough, but what about it' s charge, had I checked it? NOT-Added about 12 pounds of air, and presto, all air noise was gone-I guess I assumed it had 12 pounds of air, it only had a couple of pounds, dumb, amateur, mistake. System pressure is now at around 16 pounds, tank has about the same charge, and all is quiet as a mouse. Again, thanks to icesaiior and hot rod for all your help.

Watts AS-MB

@ February 12, 2014 3:24 PM in DHW Indirect Air Elimination

on the sytsem-heating loop has no problems with air, quiet. I have had a rattle in the DHW circulator. I was able to get rid of it this morning by closing the isolation valve down enough to cause some disturbance, which shook whatever loose, I assume from the internal check valve. Rattle is gone, maybe it was causing some cavitation,we will see-

I Did Notice

@ February 12, 2014 1:15 PM in DHW Indirect Air Elimination

the system pressure was on the low side this morning, 12 pounds or so- I'll boost it up to 16, and check the tanks pressure-Thank you for your help

So, Air in the DHW

@ February 12, 2014 10:34 AM in DHW Indirect Air Elimination

loop doesn't seem to be an issue very often, so no one adds any air elimination devices?

My system seems to get air into the DHW loop when the heating loop works hard at higher temps, like last night's 5 degrees. The air seems get into the DHW loop and than takes days to work it's way out. I think maybe I need to add a scoop to the loop to take care of the air more efficiently. Any reason not to do this, or am I treating the symptoms, not the real problem?


@ February 11, 2014 5:38 PM in annual BTU loss for Boston

about 6,000 degree days-
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