A central heating system that transfers heat from a boiler to each room through a fluid filled plumbing system.

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4
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2answers
92 views

Fill heat tank with glycol in off-grid system?

EDIT: I'm settling for a simpler system: no solar thermal panels; just a small 50 liter water heater, AC powered, run through the inverter. (So, practically no hot water in the winter time.) I'm ...
1
vote
2answers
87 views

Why are some rooms warmer than others with radiant baseboard heat?

We have hot water baseboard radiation heat. How is it possible that the first room the hot water is supposed to heat is cold and the second and fourth room are to hot and the third and fifth rooms are ...
3
votes
1answer
68 views

heating zone stays hot even when the thermostat isn't calling

we're trying to solve a very strange hot water heating problem (drawing below). We just separated the the 2nd and 3rd floors in my house into two separate heating zones, and the 3rd floor is now ...
3
votes
1answer
117 views

What is the impact of a backwards connected hot water radiator?

When building a hot water heating system the plumber has connected one of the hot water radiators backwards, i.e., the loop comes in at the bottom of the radiator and leaves the radiator on the other ...
1
vote
1answer
17 views

What is involved in bleeding air from a multi residential hot water baseboard heating system installed in 1965?

Residents are complaining of banging in the hot water baseboard heating system in our multi-residential building built in 1965. How difficult/involved is it to bleed the pipes? Does it have to be done ...
2
votes
0answers
28 views

Expansion tank is cold

My old-style expansion tank is cold from top to bottom, but I hear boiling water in the pipes right above the gas furnace. Is that normal?
1
vote
0answers
16 views

FHW oil basedboard radiators are hot even when t-stats turned off. Sediment in pipes?

I moved into a condo a few months ago. It has a forced hot water oil heating system. First floor is one heating zone; second floor is another; boiler is in basement. T-stats are manual/mercury dial....
1
vote
0answers
1k views

Water not circulating in one radiator on a hot water boiler

My boiler has 4 zones. Zone 1 is the bottom floor. There are two radiators in zone 1. I am replacing one of them, an old baseboard radiator, with a cast iron with similar BTU. We hooked up the new ...
0
votes
0answers
14 views

Hydronic PEX: OK to use clamps and tubing from two different brands?

I have an old 1900 house in Pittsburgh that I'm replacing the radiators with new Runtal rads. I have been replacing the old black iron feeds and returns with Zurn Performa PEX with Sharkbite brand ...
0
votes
0answers
13 views

Should I replumb my heating system when converting from steam to hydronic heat and back?

I live in an old 2-story house that originally was piped for steam heat. Some time ago (1950's) a previous owner took out the radiators, put in fin and tube baseboard radiators, and installed a hot ...
0
votes
0answers
65 views

No heat going to zone (baseboard)

We have a three-zone baseboard heating system. One day it became extremely hot in one of the zones on the 1st floor; it seemed as though the system was pumping hot water no matter what the thermostat ...
0
votes
0answers
232 views

How to stop central heating system from leaking

Our central heating system is leaking a bit of water. The system is a Ferolli Megadens 5, it heats water for both the central heating system and the shower/tap. There are several pipes below the ...