The boiler is used in a central heating system to heat water that is pumped through pipes to radiators within the home.

learn more… | top users | synonyms

2
votes
2answers
2k views

What should I do about this Alpha HE CB33 Boiler pressure error condition?

I have an alpha he cb33 boiler which has stopped working this morning. Yesterday I removed a radiator for cleaning then put it back on and re-pressurised the system. It was working ok last night. ...
3
votes
2answers
53 views

Best way to stop boiler steam from entering attic

I have a cape cod. The boiler is in the basement and vents to the outside about a foot above ground level. I get a considerable amount of snow melt and ice buildup in the attic section directly ...
0
votes
3answers
4k views

Why is my Central Heating taking so long to heat up?

I'm in the UK with a small modern, well insulated, double glazed home heated by a traditional gas boiler. My heating had been achieving room stat temperature within 30 minutes but is now taking at ...
0
votes
1answer
565 views

Can I have a separate thermostat for a wood boiler?

I want to wire a separate thermostat for my outdoor wood boiler so that just the furnace fan will come on without the propane kicking on. This is a Coleman furnace. Is this possible and if so, how ...
1
vote
1answer
106 views

Is it possible to relocate my water heater?

I'm planning a complete refit of my bathroom, hopefully converting to a wet room, and I just wanted to get some idea of my options. The bathroom is (sadly) very small, around 1.7m x 2.3m. This is not ...
1
vote
1answer
116 views

How do we thaw pipes that froze after our boiler stopped working?

Our boiler stopped working. We got it working again and now have hot water but no heat in two zones. Temperatures have been -25°F with the windchill and the plumber thinks frozen pipes. How do we ...
4
votes
1answer
47 views

What could cause my boiler to provide hot water, but not heating?

My boiler kicks in when the thermostat asks it to, but when my room thermostat asks the boiler to fire up, nothing happens. My room thermostat clicks on, and lights up so I think it can tell the ...
3
votes
1answer
31 views

Pressure problems with oil boiler

I've been having continued problems with the pressure in my home oil boiler rising to 30psi over time (and then leaking out the pressure relief valve). Technicians have examined it multiple times but ...
3
votes
1answer
50 views

Why would my boiler expel steam when it's set at 180F

So, I have recently had some issues with my boiler (hot water - not steam) system. After hiring some guys to stop by and take a look at it, they told me that the boiler pressure reducing valve, ...
2
votes
1answer
37 views

negative pressure/backdraft with boiler

Summary For heating in my house, I've got a Burnham Series 2 (model B) gas boiler, and with all the snow this past winter (I live in Boston) I've had problems with backdraft causing the boiler to ...
3
votes
1answer
119 views

Why does my shower keep alternating between freezing and boiling by itself?

A little while ago our totally fine bath/shower tap unit broke in our bath. Our landlord's plumber installed a new one and since then we've had big problems. Steps to reproduce: We get in the shower, ...
0
votes
2answers
639 views

Why does my oil-furnace's on-demand water heater go tepid and then return to full heat?

We have an issue with the hot water from a 2004 Peerless oil furnace with on-demand hot water. The shower starts at full temp, but quickly goes tepid (too cool for a bath/shower, but not ice-cold) and ...
2
votes
1answer
2k views

Where do I connect my C wire from my thermostat when there are two transformers?

I have a Laars gas boiler that has 3 heating zones. I want to replace the old mercury honeywell tstat on the 1st floor (heat only) with a newer honeywell RTH9580 wifi model. I've taken pictures of my ...
1
vote
2answers
425 views

Home heating fuel comparison (wood and heat pumps)

I'm investigating the most efficient way to heat my new 2000 sq home in New Hampshire and am having some difficulty working out the math based on the numbers I have found. I've found that wood is ...
0
votes
0answers
39 views

Vaillant ecotec 28 boiler pressure problem

I have a Vaillant ecotec pro 28 boiler and the pressure is too high when the heating or hot water is on. It flashes at between 3.2 and 4 bar. After searching online the suggestions were to vent any ...
1
vote
2answers
119 views

How do I plumb radiators in an off grid cottage?

I have a cottage that is off grid. I want to plumb radiators on it that wont use a pump, or minimise usage of a pump if at all possible. What is the best way to do this? Hot water tank is raised to ...
0
votes
0answers
11 views

hydronic baseboard freezing problem

When using a woodstove, the hydronic heating system never kicks on. That can lead to frozen pipes in uninsulated walls. I've heard of Thermogaurd, but its not a smart system, i.e., it uses a timer ...
1
vote
2answers
51 views

How does a boiler pump circulate water?

I read this article (link) but I'm having trouble seeing how a tiny impeller like this (link) can actually move water up my seven-story building. I understand it's connected to an electric motor, ...
0
votes
0answers
291 views

How can I determine why there is no water coming from my hot taps?

I'm getting no water from any of the hot taps in my house. The cold water taps are working fine. The central heating is also working. I have a combi-boiler. It's been fairly cold today in London, so ...
3
votes
2answers
1k views

How can I stop my boiler from making all this noise?

I'd like to preface this post with the fact that I'm a complete diy amateur. I may say stupid things, or things that make no sense. Please feel free to correct me as I'm always open to learn. So, ...
1
vote
1answer
68 views

How to troubleshoot heat that's always on?

My boiler (Weil Mclain CGA Gold ~2003 install) failed the other day. After some help from a plumber and reading the manual, I replaced a few parts (more below) to get it running again. Now one zone is ...
1
vote
0answers
229 views

How can I tell if C wire is active and connected to Thermostats?

We are trying to install a smart thermostat (Ecobee 3) so we are in need of a C wire from our boiler. We see a green wire in the wall, but it's not connected to our thermostat currently since it ...
3
votes
1answer
4k views

Should the sight glass of a steam boiler always be within the recommended range? Or only when firing?

We just had a new steam boiler installed and it is working great; all radiators are hot when the heat turns on etc. One thing I noticed though is that the site glass for the water level reads too ...
0
votes
1answer
164 views

What does code 15 on a pennco gas boiler series 15b mean?

I have new pennco gas boiler,series 15b. It reading the code sta 15. I don't understand the explanation for code 15 in book. I think it may have to do with thermostat?
3
votes
4answers
34k views

The pilot light won't ignite on my boiler — what I should check?

We have just brought a new house and I can’t get the pilot light to ignite on the boiler, it is at least a few months since the boiler has been used. Where to I start on tracking down the problem? ...
1
vote
1answer
232 views

What does the low limit do, and where should it be set on an oil fired hot water furnace?

What does the low limit do, and where should it be set? My furnace has a honeywell triple aquastat relay and has a difference dial. Water temp is about 190 deg F. Also, water psi gauge is only ...
1
vote
1answer
51 views

Second floor radiators only heat with all other radiators off

I have 2 rads on the second floor that will get hot water flow only when I stop all flow to the other rads on the system. Even then, the flow is very low. I have had this system for 10 years and ...
0
votes
0answers
27 views

Can a gas safety check be carried out when the boiler will not light?

My gas safety check is due and my landlord has said it has to be done on Saturday I've had issues with the boiler not lighting for a long time, but usually if it is left for a while it will ...
0
votes
0answers
47 views

combi boiler shuts off after a couple of hours

hi my combi boiler keeps switching itself off after a couple of hours running on the timer. You only realise when the room starts to go cold. You have to switch the boiler itself off for about 10 mins ...
1
vote
1answer
84 views

How can I reset my Baxi Combi Duo-Tec HE boiler after a gas supply fault error?

My boiler is giving me some real problems, for whatever reason, it's not resetting as it should. I ran out of gas last night and since ice put some on and tried to reset, it still thinks there is a ...
2
votes
2answers
187 views

Would upgrading hot water radiator heating result in much better efficiency?

My wife and I are thinking about buying a funky old house where we live, in southern Ontario, and trying to prioritize upgrades. There's a lot of knob and tube to replace -- top priority -- and some ...
0
votes
1answer
96 views

The hot water is working but the radiators will not heat up!

We have a Utica Boiler model number SFH4150WT and we are receiving hot water but the radiators do not heat up!!. We tried bleeding the radiators, they only heated up a little bit but after about 5 min ...
1
vote
1answer
98 views

Represurise Vaillant Turbomax gas boiler - turning filling screws, but won't fill

I have a Vaillant Turbomax boiler (unsure of exact version as I don't have the manual). The pressure is a little low so I'd like to refill. I've followed these instructions: ...
2
votes
1answer
42 views

How would I size a heating system that would only be used to warm the floors?

I have a forced air heating system that works well, and I'm not looking to replace it. However, I'd like to get the "warm floors" effect of radiant floor heating. I've heard that with a lot less ...
0
votes
3answers
5k views

Why don't my Radiators get hot?

When I turn on my heat, the pump attached to the boiler comes on but the pipes don't get hot and the radiators never do either. I've bled them and believe they are hot water radiators (since there ...
0
votes
1answer
127 views

Replacing leaking Scalemaster scale inhibitor

I've just discovered that my "Scalemaster Electrolytic Speedfit Scale Inhibitor" has a pin prick leak in it. This device is sat between a copper pipe going to the combi boiler (I have assumed) I've ...
4
votes
4answers
6k views

How safe is having my boiler in my daughter's bedroom?

I just moved into a new house where the 10 year old boiler is located in the bedroom where my 3 year old daughter sleeps. I'd like to get an idea of how safe/dangerous this situation is. Could the ...
2
votes
1answer
545 views

A boiler and a hot water tank … what is this configuration? (UK)

I'm a west-coast American living in London. I've mostly known homes with electric baseboard and central forced air heating, and a single hot water tank for showers and taps. In the UK hot water fed ...
1
vote
1answer
67 views

Electric water boiler .. how is the system supposed to work? (UK)

I'm not from the UK and am used to water being heated on-demand by a gas heater. Having recently moved to London, the flat has electrical heating and I cannot figure out how I'm supposed to set this ...
1
vote
1answer
28 views

Need help with install for weil mclain oil boiler

I just bought a weil mclain oil boiler with tankless. Can anyone tell me the configuration to plumb it? I asked two heat guys how to plumb it and they gave me different setups. I plumbed it ...
4
votes
2answers
16k views

How do I identify the C terminal on my HVAC?

How do I identify the C terminal on an HVAC, furnace, or boiler? If the terminals don't have a screw labeled C what should I look for on the wiring diagram? What steps should I take if a wiring ...
0
votes
1answer
135 views

Electric Radiant heating Vs Hydronic - What can I get?

I have a carport that was closed in to become a 3rd bedroom in our house. It has a low ceiling of approx 8 or 9ft. I gutted the whole room so it's down to the slab right now. I'm in the process ...
1
vote
1answer
157 views

Can I enclose my new boiler in a closet?

As part of a new residential boiler installation, two 6-inch ducts venting to the outside will be installed, one near the ceiling and one near the floor. They won't be attached to the boiler itself, ...
0
votes
1answer
183 views

Are uninsulated steam pipes behind walls and touching beams a fire hazard?

We are getting our unfinished basement done. We have replaced and rerouted (to make more space) our steam pipes (house built in 1937) with new pipes (Black and I believe 4 inches in diameter). These ...
1
vote
0answers
58 views

What can I do if my wood boiler keeps tripping the high limit switch?

I just installed a outdoor wood boiler and added 2nd thermostat in house. When I start wood boiler the high limit switch gets hot and trips. The only way I can keep it going is to put a jumper wire in ...
0
votes
1answer
26 views

Does C&M MX24 have a constant pilot light?

In disputing the reading that our gas meter has in a usually empty property, British Gas are claiming that every boiler has a permanently lit pilot light. I'm pretty sure that isn't the case with some ...
2
votes
2answers
640 views

Where's the C terminal on my boiler control?

The new thermostat I purchased doesn't run on batteries, and needs 24 volt power. I have only a red and a white wire connected between the boiler and the thermostat, but there is also a third, unused ...
0
votes
1answer
146 views

Which is better indirect or tankless hotwater heater

I am in the process of getting my boiler and hot water heater replaced. One company gave me a quote for a Weil McLain boiler and indirect hot water heater. Another company gave me a quote for a bosh ...
1
vote
1answer
92 views

Can I have a washer, electric dryer, oil tank, and oil burner all in the same room?

Is it safe to have the washer and an electric dryer in a basement room with an oil tank, oil burner for water baseboards and water heater?
0
votes
3answers
386 views

How to accurately judge economics of converting from oil heat to liquid propane?

I have an oil boiler in my house (boiler and burner about 27 years old) and, as part of a renovation project, I may upgrade to something more efficient. I thought I would have to stay with oil because ...