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John Mills

John Mills

Joined on October 12, 2004

Last Post on April 12, 2014

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PVC pipes

@ April 12, 2014 8:44 AM in Burnham Alpine

Did I understand that you are running the exhaust up the chimney as a chase but the intake out the basement wall? Not sure about boilers but many forced air furnaces won't run that way. Both pipes have to be in the same pressure zone, in other words - together. 

What are you replacing?

@ March 29, 2014 10:15 AM in two 2.5 ton heat pumps for one 5 ton heat pump

You are replacing something  but not the blower? 

0 & B

@ March 12, 2014 1:34 PM in Trol A Temp Replacement wiring

That old panel relied on the stat telling it whether it was set to heat or cool by the signal on the O and B terminals. Rare to find a modern stat with both. Last I knew, the White-Rodgers 1F80-361 was a digital programmable that did.

Probably is time to get a modern panel, make sure it can handle the dampers which are likely powered open & powered closed. A new panel with a discharge air sensor that is ADJUSTABLE lets you cycle the equipment by the panel not the furnace limit.

If you replace the panel, you'll need to replace the other stat with a model that can select heat or cool manually otherwise the system will never shut off.


@ March 5, 2014 12:43 PM in Gas furnace v hydro-air in remodel

Trane 60K 95% furnace will be GROSSLY oversized for 1000 sq ft built like a tank. I have 1000 sq ft stand alone house and heated at -15° out with high locked out or firing at 36,000 BTU. Friend with a foamed 1600 sq ft house had a Trane 60K 2 stage and it would only fire on low with 2 zones calling, She never did use the basement so the zone panel wouldn't let the furnace go to high. So if you go with a gas furnace, find the smallest you can get or you'll short cycle so much you lose efficiency. Or another selling point for the hydroair. 

2 or more!

@ February 26, 2014 1:58 PM in Single stage, two-stage and multi-stage, which one

We've sold 2 stage furnaces for 30 years and modulating since Rheem came out with theirs. Customers love them. Never heard customers rave about a furnace til the Rheem mod on the matching stat. It is NOT gone now, just not available in the downflow and horizontal at this time. The new line they haven't brought out the multiposition mod yet. AFUE rating issues I hear. We put all of our 2 stage on 2 stage stats.

Only thing I'd worry about with 2 stage and mods is ceiling vents. Since almost all of ours are floor, even with downflow equipment, we haven't had complaints about comfort on low fire. As these new junker homes with ceiling vents need new furnaces, it could become an issue.

As for blowing cold air, since most furnaces start blowing as soon as a hint of warmth builds up in the HX, that likely will be an issue with any high efficiency furnace. A properly sized 2 stage with 2 stage stat will have long run times on low in bitter weather eliminating a lot of the cycling from the older, likely oversized single stage furnace.

How to vent oil

@ February 19, 2014 4:05 PM in How to vent oil

New owners of an office in an old house. Took down the chimney venting the furnace. Got b-vent, stuck it out the side wall of the basement and terminated below the eave. This is what we found!


@ February 19, 2014 4:03 PM in atmospheric boiler for coach house?

Never heard of that particular boiler and if it says don't put in a garage, it shouldn't be put in a garage. In our area, in a lot of parts of town, most equipment is in a garage regardless of what it is. No new boilers are being installed but the average smaller new home gets an 80% furnace and thousands are replaced each year. Many 90s in garages don't have outside air for combustion. Not putting an open flame in the garage may be a local code but if it is acceptable in an area I can't see how a contractor is risking his license doing it. Same with water heaters. Now they have the flame safeguard but are still using garage air for combustion. 

Thanks Joe

@ February 19, 2014 12:44 PM in 007 cap

Now I know what to ask for.

If I can get this old girl a cap for a reasonable amount sure beats many many hundreds for a new pump installed.


@ February 19, 2014 12:41 PM in atmospheric boiler for coach house?

Can't use a conventional boiler in the garage? That a local code? There are oodles of homes around here with boiler in the garage. For the outrageous price of a mod con with the extra piping, nobody wants to spend that. We go back with an 80% cast iron boiler. No problems here doing that. Just get the burners 18" up like we would with a water heater or forced air furnace. 

007 cap

@ February 18, 2014 10:00 AM in 007 cap

Anybody know where I can get this 5mfd run cap out of a 007? The usual blower motor caps don't fit in that little compartment. 

007 CAP

@ February 14, 2014 2:44 PM in 007 CAP

Anybody know where we can get just the capacitor for a 007? Seems a shame to install a new pump for hundreds when all it needs is a $1 cap!


@ February 13, 2014 2:25 PM in Replacement condenser

After that first spike, how are pressures in heating mode? Mismatching is more likely to cause problems with HPs in heat mode since they need less charge to begin with AND the older indoor coil is physically smaller than the ones designed for today's units. So not unusual to run high heads in these situations though it would be all the time, not just on startup.

Is there a built in drier and a liquid line drier? If so watch that little toy Goodman usually puts IN their units. Doesn't take much to plug up.


@ February 13, 2014 2:19 PM in Condensing Furnace questions

If heat loss is 74K and they go with a 100K 92-95% furnace, I'd call that oversized and sure wouldn't do it. Just my 2 cents worth. I'd find a furnace closer to the needs of the house. I would agree that the 80K is right. We sell mostly 2 stage and occasional Rheem modulating furnaces and our customers love them. Rare to sell a single stage except in rentals and lower budget situations.

Today's 95% furnaces want to move a lot of air so oversizing can be noisy if the ductwork is designed for 100° temp rise of oil!

No Nest!

@ February 13, 2014 2:04 PM in Nest Or other Internet controlled.

I hate them and their support!

Ecobee is harder to use than Honeywell but tells you a lot more online. Honeywell stats are so easy but you are limited to simple alerts, changes and programming online. The Focus Pro WiFi is a pretty low priced way to get remote access.

Laars low water flow board

@ February 10, 2014 7:52 PM in Laars low water flow board

Got an old JVS-100 found cool. Would fire for 30 seconds off for about 2 minutes. Regular as clockwork. Traced it to the low water flow board.

NOW: when it wasn't firing the relay on said board was clicking on & off like a turn signal. The whole time. And when it did it sent a split second of voltage to the spark control which in turn sent voltage to the gas valve so one of the solenoids in the valve, guessing pilot, was also clicking on & off like a turn signal. Obviously not right.

So, do we have a flow issue? Bypassing the board to get heat on a below zero night, sure doesn't seem like it. Got the loops hot in no time so didn't appear to have a flow problem. Hate to order a new board to have it do the same thing (less the turn signal). Just started this.

Any thoughts? Thanks!

Thanks Tim

@ January 28, 2014 1:06 PM in Difference in aquastats

The current one and the -1299 both have the damper plug and our boiler has a damper. Would we be best going with the -1265? 


@ January 27, 2014 4:26 PM in Difference in aquastats

According to Bryant it is a 433-00-523 
(ECR part #) which appears to cross to a L8148E1257. So the question would be, does anything cross to that, such as the -1299 I have in stock, or do I have to go back to Bryant/Carrier/ECR? 

Difference in aquastats

@ January 27, 2014 8:47 AM in Difference in aquastats

Anybody know the difference between L8148E1165 and 1299? Will the 1299 work in place of the 1165?


Heat Pack

@ January 21, 2014 12:35 PM in Oldie

Brand name we found was Heat Pack, made in Wyoming IL. Didn't look at the piping close enough. Just looked at one rad whose cover was off. Saw the vent. 


@ January 20, 2014 6:25 PM in Oldie

Found this in the cellar today. May have heated the whole house at one time but in its last years, heated an area above the garage some distance away. New owners say hasn't been used in some time. Asbestos just falling off the pipes. 2 pipe but saw a vent on a radiator, thought they were only used on 1 pipe. 


@ January 17, 2014 2:30 PM in Will the combustion exhaust from my condensing gas boiler harm my home's brick outer wall?

The exhaust should blow straight out from the house, not elbow and blow along the house where it will damage the mortar and possibly stain the brick. 

Newer Honeywell

@ December 31, 2013 3:25 PM in Recommended steam thermostat with wifi and remote sensor?

The newest Honeywell Vision Pro with EIM and Prestige IAQ have remote sense capability, wired or wireless. You would use the Redlink Gateway with either to connect to your web router. Overall I've found pretty the Redlink technology pretty reliable. Did have my gateway not tell the stat to put the fan in the on position the other day but that's been it.

Nests have been a thorn in our side, especially on heat pumps. Don't have enough boilers around here to know about how they get along.
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