10 votes

How can I move a new heavy boiler to the basement and the old one up and out?

Read the warranty carefully. Some appliances have parts-and-labor warranties for a limited period, and one year is usually within that period. Sometimes they are covered that way only if they are ...
jay613's user avatar
  • 37.4k
9 votes

How can I move a new heavy boiler to the basement and the old one up and out?

First, I don't know why you are worrying about getting the boiler downstairs, since you are hiring someone to do the job. Any boiler installation job includes bringing the old one up and taking the ...
Cheery's user avatar
  • 5,325
7 votes
Accepted

Hydronic heating system uses ONE line for supply and return?

You have a One Pipe System and it looks and works like this one pipe Suggest to Read the article, it nicely explains the details. The main drawback is there is a temperature drop at each radiator ...
Traveler's user avatar
  • 17.3k
5 votes

How do I completely drain and decommission hydronic radiant heating system?

I would approach this as if it was a sprinkler system... with compressed air. If you can, work each circuit individually. If not, work the longest or furthest ones first. You could also simply use a ...
isherwood's user avatar
  • 137k
5 votes

How can I move a new heavy boiler to the basement and the old one up and out?

How you get a boiler (or anything else large and heavy) in and out of a basement is very site specific. One method with the usual "bulkhead stairs outside access" is to remove the stairs ...
Ecnerwal's user avatar
  • 214k
4 votes

Is this typical for how hot water heating loops are plumbed?

Yes, that is how modern hydronic heating systems are commonly set up. The main pipes are called the "primary loop" and each set of smaller piping to the radiators is called a "secondary ...
Moshe Katz's user avatar
  • 2,696
4 votes
Accepted

Hydronic heating not working, but have hot water

Your boiler is obviously not the issue because your DHW is working. There are really only two other major components to a hydronic heating system: the circulator pump and the zone valves. Circulator ...
Chris O's user avatar
  • 6,785
4 votes

Will I have condensation on a slab cooled with groundwater?

Hint - what's the dewpoint in cooling season? is it below 55°F or above that? Dry desert you might not drip, as the dewpoint might be below 50°F all summer; where it gets hot and muggy with dewpoints ...
Ecnerwal's user avatar
  • 214k
3 votes
Accepted

How to install hydronic radiant heat over concrete slab

From Radiant Engineering, thanks for discussing our ThermoFin U product. The preferred method is to install the plates with the fins down. For a ThermoFin U installation on concrete, you would build a ...
A. Flynn Radiant Engineering's user avatar
3 votes

Nest E thermostat on ancient 2-wire Bryant boiler system with 2 zonesq

I just realized I never followed up on this. I was chasing a red herring, as the Next E turned out to be defective, and wouldn't charge under any circumstances. Nest replaced it for me and the new one ...
Polly Cat's user avatar
3 votes

How does hydronic heated flooring work with hardwood?

I have traditional oak tongue and groove (not floating) flooring with radiant heat, and it's great! The previous owner, who was a builder by trade, installed the flooring and radiant heat as new ...
MTA's user avatar
  • 11.3k
3 votes

How to increase flow without causing cavitation in hydronic heating system

This seems to have been not well set up by whoever designed it. Stock advice on the relationship of pumps and expansion (aka buffer) tanks is (as @Solar Mike already said) that the expansion tank ...
Ecnerwal's user avatar
  • 214k
3 votes
Accepted

What does it mean to say that a metal piping system must be "bonded"

Ground bonding means connecting something to the Grounding Electrode System of an electrical installation, by means of an effective conducting path, which may mean approved copper or aluminum ...
kreemoweet's user avatar
  • 3,539
2 votes

Anyone installed a hot water coil in their HVAC ductwork to increase heat pump efficiency?

Better idea: flip things on their head You need hot water to run a hydronic heating coil efficiently, far hotter than you'd ever set your water heater to (water heaters struggle to reach 180°F ...
ThreePhaseEel's user avatar
2 votes

What are normally-open hydronic zone valves used for?

Choice of normally open or normally closed for a valve actuator is part of the overall controls design process, part of which is considering safety/protective functions. As an example, consider a ...
tmband25's user avatar
2 votes
Accepted

Boiler Valve Corrosion

1) Is there any purpose for this valve other than for removing the pressure gauge? NO, the valve is only there for isolation of the gauge. Gauges like that have a high failure rate (for various ...
Jimmy Fix-it's user avatar
  • 35.8k
2 votes

Can’t shut off power to heat-only (hydronic baseboard) thermostat

The reason you need to cut off power when replacing a thermostat is to prevent the wires from touching each other in the process of disconnecting and reconnecting all of them. Assuming it is using ...
JPhi1618's user avatar
  • 27.9k
2 votes

Can I replace hydronic water boiler return pipes with pex?

Here in Italy pex is widely used for new heating system (both radiators and underfloor), just check the maximum allowed temperature is high enough (I'd say over 120°C) and you could use it for both ...
DDS's user avatar
  • 2,375
2 votes
Accepted

Home Heating Efficiency

If your numbers are accurate (that seems like a shockingly low price per therm for 2020): 10.57 cents buys you 13,989.2 BTU at a COP of 4.1 in the heat pump. 14.14 cents buys you 96,700 btu in the ...
Ecnerwal's user avatar
  • 214k
2 votes
Accepted

Updating baseboard radiator

Can't tell from looking at the picture you posted but it looks like a finned tube hot water baseboard unit. Do you heat your house with a hot water boiler and if not can you elaborate. If I am right ...
d.george's user avatar
  • 12.4k
2 votes

Grundfos Alpha pump shows 0 GPM but consumes power and heating works?

The good news is it is working. I've noticed that pump is both a bit optimistic (claiming flow rates of, say, 7GPM when all my other data says 6 or less). But it also rounds to a whole number. So you ...
Radiance Heating and Plumbing's user avatar
2 votes

Oil boiler, remove baseboard from entire house but keep the water heater

If you actually have valves on both supply and return (uncommon) you can proceed as described. Normally there's only valving on one side of the loop, so cutting out the loop piping will drain the ...
Ecnerwal's user avatar
  • 214k
2 votes

Nervous About Hydronic Floor Heating

I don't have LVP but I do have hydronic floor heating aka radiant heat. I have PEX tubing below a 3/4" plywood subfloor with 3/4" solid oak flooring on top, and no carpets. There's ...
MTA's user avatar
  • 11.3k
2 votes
Accepted

Boiler heating, but no water flowing through system

Sounds most like a bad circulator, but you could perhaps verify that power is being applied to the circulator wires (seems likely if there's a light on it.) The sheet here (which may or may not be ...
Ecnerwal's user avatar
  • 214k
1 vote

Where Can I connect my C-wire on A Hot Water (Hydronic) Heating System?

Nowhere in there. that's a DC circuit and a "C" wire is an AC thing. you'll need to use an auxillary power supply to run your smart thermostat.
Jasen's user avatar
  • 20.8k
1 vote
Accepted

How impactful will it be to lose 7' of radiant heat pipe in a room?

Maybe I am missing something here but the entire loop will still be in the room so there will be heat in the wall And the floor with a longer loop. but my concern would be air trapped in this loop ...
Ed Beal's user avatar
  • 103k
1 vote
Accepted

Can I replace hydronic water boiler return pipes with pex?

I don't have any first hand experience, but I don't think there's anything wrong with using PEX for a hot waater heating system. I base this on two recent observaations. 1) A new $million+ house I ...
SteveSh's user avatar
  • 6,882
1 vote
Accepted

New thermostat for hydronic heating, no wiring labels, 3 wires

As I mentioned in the comments, I was able to get the correct wiring by referencing an identical heating set up. It is: Red = R/H, jumpered to R/C Blue = G Yellow = W/E
n8.'s user avatar
  • 121
1 vote

New thermostat for hydronic heating, no wiring labels, 3 wires

You say, "the fan would come on with a manual switch". Do you mean the "fan" switch on the old thermostat? Or a line voltage switch elsewhere, like on the fan itself? Normal T-stat wiring is 24v ...
George Anderson's user avatar
1 vote

How do I purge the air from a hot water furnace with zones

Well... the way that my father does it is that he isolates the zone from the other zones by shutting off the manual cutoffs. Then attaches a pump to the drain cock on both sides of the zone, and runs ...
gbronner's user avatar
  • 5,593

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