Search: Posts Made By: pbct2019
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12-17-20, 10:43 AM
Replies: 9
Views: 653
Posted By pbct2019

On your Zone valves, lets label the terminals 1,...

On your Zone valves, lets label the terminals 1, 2, and 3. With "1" being the thermostat side. Lets ignore wire colors for right now. The hot terminal on your transformer goes to "R" on your nest....
12-17-20, 10:29 AM
Replies: 14
Views: 348
Posted By pbct2019

It sounds like you actually have a similar setup...

It sounds like you actually have a similar setup as me. The previous owners of my house put an extension in and, to add a new heating zone, they took an original heat zone and split it with two zone...
12-17-20, 10:03 AM
Replies: 4
Views: 177
Posted By pbct2019

Based on the schematics, it looks like Astuff is...

Based on the schematics, it looks like Astuff is correct about the terminals. You can always confirm "W/Z" is the common by checking with a voltmeter that there is 24V across "Tv" and "W/Z".

That...
Replies: 19
Views: 380
Posted By pbct2019

I second PJs comments above. The only way to find...

I second PJs comments above. The only way to find common on the aqustat is to break it down and follow the traces on the back of the board. Even if you find it, is the transformer rated enough to...
Replies: 19
Views: 380
Posted By pbct2019

Just to add. the cheaper non EXP version of the...

Just to add. the cheaper non EXP version of the taco I listed above should work; at first I didn't think it had a transformer built in but I believe it does. It is just the SR501-4.
12-15-20, 11:04 AM
Replies: 20
Views: 471
Posted By pbct2019

I second all of PJ's comments. Check for a loose...

I second all of PJ's comments. Check for a loose fuse or connection at ac input. Everything else is wired up properly now.

Its amazing that your system worked at all with the TT on aquastat to RW...
Replies: 19
Views: 380
Posted By pbct2019

Just to confirm you have just one heating zone,...

Just to confirm you have just one heating zone, right?

If so, two alternative approaches that won't require you messing around with the aquastat:

1) get a single zone controller, like the Taco...
Replies: 6
Views: 148
Posted By pbct2019

In terms of swapping in the new cable, it looks...

In terms of swapping in the new cable, it looks like you did everything okay. That is assuming you didn't change anything at the other end of the brown cable (at your boiler).

A few different...
Replies: 3
Views: 122
Posted By pbct2019

Thanks, maarkr and PJmax. Leaving it open seems...

Thanks, maarkr and PJmax. Leaving it open seems to be the more common opinion. It seems that while cooling the attic is less ideal, decreasing airflow is much worse. Eitherway, both the second floor...
Replies: 3
Views: 122
Posted By pbct2019

Attic Exhaust Fan: To Cover or Not to Cover

My house has a fully insulated but unconditioned attic that houses the upstairs hvac blower. I know we have ridge vents, I have seen evidence of baffles under the insulation, and I assume there are...
Replies: 9
Views: 298
Posted By pbct2019

It looks like, as PJ pointed out, that hose...

It looks like, as PJ pointed out, that hose valves need a powered signal to open and an additional powered signal to close the valve. This is in contrast to my Taco 3-wire zone valves, for example,...
11-20-20, 06:20 PM
Replies: 6
Views: 189
Posted By pbct2019

the "R" to the thermostat should make 24V with...

the "R" to the thermostat should make 24V with the common, "C". That will power your stat. Unfortunately, they typically don't advertise a 24V "C" terminal on the aquastat because they aren't...
Replies: 27
Views: 557
Posted By pbct2019

Doug, your opinion is quite clear (as is normally...

Doug, your opinion is quite clear (as is normally the case). As I stated, I am looking to hear others because there is a wealth of information out there that contradicts what you are claiming and no...
Replies: 27
Views: 557
Posted By pbct2019

@Doughess -- Interesting. In my limited, but...

@Doughess -- Interesting. In my limited, but fairly thorough research, I have always read that boiler efficiency is improved with run time and that short cycling is bad for equipment and efficiency....
Replies: 27
Views: 557
Posted By pbct2019

Thanks, DougHess. Its currently 45F and I have...

Thanks, DougHess. Its currently 45F and I have been working at the kitchen table where I can hear the boiler cycle; I can certainly say I am averaging more than 10min per hr but probably not 20 min...
Replies: 27
Views: 557
Posted By pbct2019

Yeah, 1800-1850 sqft includes all of the livable...

Yeah, 1800-1850 sqft includes all of the livable space. The original houe was ~1000 sqft. The attached single car garage was converted into the kitchen (+300sqft) and then an extension was added off...
Replies: 9
Views: 381
Posted By pbct2019

Thanks, Tom. I never would have thought it before...

Thanks, Tom. I never would have thought it before experiencing it but it wasn't a good thing that the old homeowner convertered the boiler to gas. Well atleast its easier to say when oil is so cheap....
Replies: 27
Views: 557
Posted By pbct2019

Hi, Ferd. Some of your terms are over my head...

Hi, Ferd. Some of your terms are over my head there. lol. Do you mind explaining the 7F and 63F TD? 7F is the 99% value calculated for my area? Is 63F the target to maintain?

The house is about...
Replies: 9
Views: 381
Posted By pbct2019

Thanks, Tom. The previous owner did a gas...

Thanks, Tom.

The previous owner did a gas conversion on the boiler back in 2018. She probably blamed oil for her high heating bills when in fact, it was boiler short cycling and her technician...
Replies: 9
Views: 381
Posted By pbct2019

Thanks, Allan. I am not sure I described...

Thanks, Allan. I am not sure I described everything correctly. Based on all the reading I have done, the reverse indirect seems like exactly what I need (but I could be wrong lol). I have another...
Replies: 27
Views: 557
Posted By pbct2019

hi, all.. thanks for the feedback. Here are the...

hi, all.. thanks for the feedback. Here are the details:

House: I purchased it in the end of 2018. It is 1850 sqft, shoreline CT, new haven county. Original structure was about 1100 sqft. Garage...
Replies: 9
Views: 302
Posted By pbct2019

well its still 70F here. I am waiting for the...

well its still 70F here. I am waiting for the indoor/outdoor differential to get a bit larger before imaging again.
Replies: 9
Views: 381
Posted By pbct2019

Opinions on Reverse Indirect Water Heating

My boiler is oversized and typically short cycles, burning just 3 to maybe 5 minutes at a time. This isnt all that surprising given I have 126k BTU boiler for an 1800 sqft house with 4 relatively...
Replies: 27
Views: 557
Posted By pbct2019

Thanks, PJ. The first airhanlder is the Trane...

Thanks, PJ. The first airhanlder is the Trane TWE018C140B0 (we were talking about this same unit regarding a 2/3 speed blower motor). The second air handler is a Rheem RBHA-17J00NHDA.

My end goal...
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