Skip to main content

Questions tagged [hydronic]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
2 answers
2k views

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

I want to try and bleed the air from my hydronic ( baseboard ) heating system. It's a natural gas system, I think I understand the basic functionality but my system seems to be a bit unusual and I'm ...
user379468's user avatar
0 votes
1 answer
571 views

Boiler Valve Corrosion

I have a hydronic heating system in my house, and I noticed a valve on a pressure gauge on the side of the boiler is extremely corroded (see 3 pictures below). 1) Is there any purpose for this valve ...
JCB's user avatar
  • 85
0 votes
2 answers
240 views

Most efficient way to improve my house's heating

I live in the mid-Atlantic in a 100 year old house, and I'm looking for a way to reduce my heating bill. Last winter, I left the thermostat at 68F, and our gas bills were incredibly high, despite ...
newothegreat's user avatar
0 votes
1 answer
425 views

Calculating the feet of head for a single loop cast iron radiator system

I am trying to figure out how to calculate the total equivalent length of a loop with cast iron radiators. The pipes and fittings are easy to calculate because pipe is calculated linearly, and the ...
zelinka's user avatar
  • 232
0 votes
1 answer
521 views

Use CLR to clean stuck bleeder valve

I was bleeding the air out of hydronic heating zones and I notice some mineralization on bleed valve attached to my air scoop. I took the Schrader valve cap off and tapped the valve I noticed it was ...
salisboss's user avatar
  • 301
0 votes
1 answer
43 views

New Thermostat Won't Engage Plinth Heating in Kitchen Island

I have two plinth heaters on either side of my kitchen island. Since the rest of the house is hydronic, I presume that these are hydronic (there is a zone valve at the boiler) with electric fans ...
salisboss's user avatar
  • 301
2 votes
0 answers
102 views

How to remove a Honeywell Braukmann 104v radiator actuator

I have a radiator with a Honeywell 104V radiator actuator that I'd like to replace, I think it's P/N T104V1422. I can't seem to figure out how the thing is connected to remove it. The rest of the ...
Arcane2784's user avatar
0 votes
2 answers
441 views

What's the effect of introducing bends into a primary-secondary heating loop?

I've been learning about primary-secondary boiler systems for my home, and have landed on a two-boiler system (two apartments), very much like Siegenthaler describes in his illuminating book and here ...
alesage's user avatar
  • 115
1 vote
1 answer
507 views

cannot get last radiator on the line to heat up

All radiators but one are toasty. The cold one is up on the second floor, and is the last one on the line, farthest from the boiler. It has been bled of air. It shoots out a thin stream of (cold) ...
mr blint's user avatar
  • 1,870
0 votes
3 answers
6k views

What are normally-open hydronic zone valves used for?

In a hydronic (hot water) heating system electronically operated valves control whether hot water runs through a particular zone of the building, or not. It seems to be a common setup for the valve ...
StayOnTarget's user avatar
  • 5,585
0 votes
2 answers
769 views

Difference between geothermal and regular hydronic zone valves

Taco makes two variants of zone valves - one type for general hydronic use, and another type marketed especially for geothermal use. What is the difference in valves that particularly suits them for ...
StayOnTarget's user avatar
  • 5,585
0 votes
1 answer
2k views

Where to place an aquastat that is external to the hot water tank?

If you need to retrofit an aquastat to a heating system what is the best way to do so? i.e., in some hot water tanks or even boilers there may be a purpose-made port specifically to accept a "well" ...
StayOnTarget's user avatar
  • 5,585
-1 votes
2 answers
1k views

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

I have a 2-zone hydronic system running off an ancient Bryant boiler. Power is supplied by a 24V transformer, and each red wire passes through a Taco zone valve before heading off to the appropriate ...
Polly Cat's user avatar
0 votes
1 answer
1k views

Rattling sound from heating pipes

I keep on hearing a rattling sound like metal banging from 1 section of pipe in my hydronic heating system, I tried bleeding but no improvement. Thanks
aofkj's user avatar
  • 432
1 vote
1 answer
1k views

Bosch Heat Pump + Hydronic Coil?

I was hoping to get some advice on the proper setup for this system. I live in Long Island, NY and just moved into a large house with an extremely old oil burner and 3 a/c condensers. I'm about to ...
Jeffrey Hsi's user avatar
0 votes
0 answers
853 views

Slant/Fin Victory II Boiler - How do I turn on?

This summer, we moved into a home that has sub-floor heating installed. However, I have no idea how to use the boiler or turn it on. The boiler itself (a Slant/Finn Victory II gas-fired boiler) has ...
Zephyr's user avatar
  • 101
3 votes
1 answer
7k views

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

Hydronic heat supplement to Heat pump Home heating System. Anyone have experience putting a heating coil in the ductwork of a forced air heat pump system? Background. The existing HVAC system is a ...
user67651's user avatar
1 vote
2 answers
1k views

Hydronic kickspace heater on same zone as cast iron radiators?

Small older home that has in-wall cast iron radiators throughout the house in a single zone. Hot water not steam. When the kitchen was remodeled years ago the cast iron radiator was removed because it ...
OrganicLawnDIY's user avatar
0 votes
0 answers
553 views

single radiator whistling and whirring on and off (hot water system)

As the question stated, I have a single radiator whistling and whirring on and off and I am trying to understand the cause, so I can stop it. It is a fairly high pitched whistle/whirr/squealing sound. ...
Brian G's user avatar
  • 129
0 votes
1 answer
1k views

pressure in boiler getting too high

The pressure relief valve on the hydronic system boiler is releasing a little water every time the boiler cycle is almost done and I looked at the gage and its rising to about 30 psi, But I can't ...
aofkj's user avatar
  • 432
2 votes
1 answer
387 views

Hydronic heat radiators not used for long time - should they be drained?

What should I do with radiators that have been out of action for about 3 years since the boiler went on the blink? Is it better to drain the water out of the system while system is dormant?
J Doe 's user avatar
  • 21
1 vote
0 answers
108 views

Hydronic Heating: Noisy pipes in the basement/walls

My issue is i have a natural gas boiler + hydronic heating system (two zones). It seems that after I remove air from each zones, the heating system is quiet until 12 hours later. In the early morning ,...
xyy 844's user avatar
  • 11
1 vote
2 answers
332 views

Can I run my hydronic circulator off an appliance cord in order to use it to purge air?

I have a hydronic heating system with a relatively powerful B & G circulator pump. This pump has a relay that is controlled by the furnace electronics; if there is no power to the furnace, there'...
gbronner's user avatar
  • 5,698
4 votes
4 answers
28k views

How to install hydronic radiant heat over concrete slab

I'm trying to figure out the most ideal way to install hydronic radiant heat in my basement over the existing concrete slab. I've looked at several products for heat distribution, like Warmboard, ...
vlozko's user avatar
  • 87
1 vote
2 answers
290 views

Are hydronic systems set up as loops or ladders, and how can I tell the difference?

My hydronic system has a loop (or ladder) that visits baseboard radiators on four floors. All piping is hidden in the walls. On the attached diagram, squares are windows, red is baseboard radiators, ...
gbronner's user avatar
  • 5,698
1 vote
1 answer
1k views

Can I install thermostatic radiator valves on a hydronic heating system?

My house has three hydronic heatin loops; two are shaped like a ladder. The baseboard radiators are plumbed with type M copper pipe. I'm thinking about installing thermostatic radiator valves on the '...
gbronner's user avatar
  • 5,698

1
2