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Questions tagged [hydronic]

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2
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0answers
15 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 ...
0
votes
0answers
122 views

How to deal with shallow exterior walls (re-wiring, replacing baseboard heaters, adding insulation)?

I recently began a re-wiring project in a part of our 1950s home. The house has what I guess is a limestone block exterior. Upon taking the paneling/drywall off of the exterior walls, we learned that ...
0
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2answers
66 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 ...
1
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1answer
58 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) ...
0
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3answers
300 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 ...
0
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2answers
90 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 ...
0
votes
1answer
25 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" ...
0
votes
1answer
390 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 ...
0
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1answer
254 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
1
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1answer
55 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 ...
0
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0answers
291 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 ...
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0answers
83 views

Sagging sewer line under a concrete slab with radiant heating: what are the options?

We've just had a house inspection for house in Vermont, where the septic inspection revealed that the sewer pipe is sagging (or "has a belly") running for about 40 feet under the concrete slab that ...
2
votes
1answer
2k 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 ...
1
vote
1answer
250 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 ...
0
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0answers
161 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. ...
0
votes
1answer
755 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 ...
3
votes
1answer
67 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?
1
vote
0answers
69 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 ,...
1
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2answers
89 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'...
3
votes
2answers
13k 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, ...
1
vote
2answers
147 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, ...
1
vote
1answer
730 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 '...