Questions tagged [boiler]

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

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Relight pilot on ideal standard boiler

I recently had to turn off the gas supply and the pilot light on the old boiler went out. The instructions mention turning the gas control knob to pilot position but it doesn't seem to turn. Pretty ...
Vanessa's user avatar
8 votes
1 answer
2k views

Boiler *might* have caused water intrusion... who do I call?

apologies if this is a super basic question, but this is my first time owning a home and not sure who to call. So my boiler seems to be leaking -- I think this may have been happening for a while, but ...
user96104's user avatar
1 vote
2 answers
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Nest thermostat and no C wire at my boiler

so I bought a nest thermostat and it keeps running through the AAA batteries, recommending that I use a C wire, though there's just 2 coming out of the wall (red and white). I got C wire/power adapter ...
Brian Battenfeld's user avatar
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55 views

Thermostat Wiring for Zoned Hydronic Heating

I have a 7 zone circulator pump heated using Navien combi-boiler. 3 thermostats are connected to the boiler, and the remaining 4 are connected to a Taco SR-504 relay. All the connections have 2 wires, ...
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Boiler heats up water, but radiators are not working

The boiler should be working correctly, the hot water works and engineer came two weeks ago to check everything and it’s fine. However the radiators do not heat up. It was working correctly, then I ...
Wiertara's user avatar
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Water gets cold when central heating is on?

I have a Vaillant System Boiler with an external cylinder to store hot water. After heating the water, If I switch on the central heating the water supplier to the taps/showers gets cold after a short ...
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1 answer
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How to remove limestone from supply lines?

I noticed that some pipes have a low flow of water, in particular hot water pipes. I removed the limestone from faucets using vinegar, and it worked, but I noticed that the supply pipes themselves are ...
Marco Sulla's user avatar
1 vote
1 answer
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Should I upgrade my boiler control transformer?

I have a 24V 40VA transformer for my boiler. It powers two zone valves labelled 0.9A each, and two thermostats labelled 1VA each. All of them together would draw about 45VA. I'm now adding an ...
jay613's user avatar
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Pipe coming off of boiler

wondering what the copper-colored pipe coming off of my boiler is? It's never done anything before but recently started leaking some water (not much, but that's why I've got a tray there now). And is ...
David's user avatar
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3 votes
1 answer
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How should this UL-listed boiler cutoff switch maintain Class 1 separation?

The Guard Dog RB-122E Low Water Cutoff is UL listed, it requires 120V AC and is capable of switching 24VAC on the control side of a boiler. It is a self-contained metal enclosure with knockouts for ...
jay613's user avatar
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Removing and replacing PRV from water boiler

The pressure relief valve on my boiler is rated for 30psi but is weeping water on the discharge line at around 25-27 psi so it seems it needs to be replaced. Unfortunately the valve does not seem to ...
codeZonkey's user avatar
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Advice on use of Boiler Reset Device in 2023

Question: I'm looking for wisdom, tips and tricks regarding installation of a "boiler reset", a device that reduces water temperature in a central heating system on moderately cold days. ...
jay613's user avatar
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2 votes
1 answer
135 views

Where to connect a common wire to a Burnham alpine Furnace

Like many on this site I am trying to install a smart thermostat. I have 3 wires, 24V Red, white, and blue at the thermostat, but only 2 down at the boiler. My boiler is a Burnham Alpine model number ...
Paul's user avatar
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1 answer
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What is the proper way to drain my baseboard heaters?

I am in the process of adding a new baseboard heater and I am trying to figure out the proper way to drain my system. I believe I will first need to shut off the valve on the right in the picture ...
brassmookie's user avatar
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How can I tell if there’s enough water in a hot water boiler system that doesn’t have a pressure gauge

It has an automatic water filling system with a Watts pressure valve SB1156F but the third floor radiator was empty. I’ve held the purge lever on the pressure valve open to fill the third floor cast ...
Michael 's user avatar
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Central Heating Inhibitor for underfloor heating?

I am getting quotes for annual gas boiler service. The guy was talking about adding central heating inhibitor. I have underfloor heating (gas), which he knows. Would you still use central heating ...
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4 answers
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How can I move a new heavy boiler to the basement and the old one up and out?

I need help moving a new boiler into my basement and to have the old boiler removed from my basement. It will be a warranty return less than 1 year of use so the old one must be kept intact. The ...
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2 stage heat pump and condensing boiler run off one 3rd gen thermostat

I have a 2 stage 20 seer bosch heat pump utilizing aux heat strip for second stage. I also have a navien condensing combi unit for domestic and hot water baseboard heating. Currently both systems are ...
Brian's user avatar
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1 vote
2 answers
182 views

How to increase flow without causing cavitation in hydronic heating system

I have a hydronic heating system in which water heated by a boiler is pumped around the perimeter of the house using circulator pumps. Currently the flow rate is too low, causing the boiler to ...
user169686's user avatar
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1 answer
59 views

Electronic boiler (water heater) stopped heating: weird cable hookup

My boiler stopped heating water yesterday. It was working fine for 1 year (I rent this home so I guess this boiler could be more than 5 yrs old. For the debugging, I started with measuring the voltage....
Christianidis Vasilis's user avatar
1 vote
1 answer
110 views

How to reduce ghost flow from boiler to indirect water tank

I recently had an indirect-water tank added to my multizone gas-powered hydronic heating system. The supply line from the boiler to the water tank heats up considerably every time one of my heating ...
user169686's user avatar
2 votes
1 answer
271 views

Is my basement chimney suitable for venting a gas-powered boiler?

I just purchased a home, and I am looking to install a new gas powered boiler. The current boiler vents into 100 year old chimney. To my surprise, there is an unobstructed view from the bottom of the ...
user169686's user avatar
1 vote
2 answers
80 views

How to make c-wire to a new boiler using Fast-Stat common maker?

I'm seeking assistance regarding connecting a C-wire (for Ecobee) to a new boiler using the Fast-Stat common maker. The new boiler currently has two thermostat wires available for connection. However, ...
Kamsu's user avatar
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Old house, want to update thermostat

I bought an older house (1897!) and am slowly but surely going around and repairing things and updating them. I want to update my thermostat to an ecobee one. We only have radiators and no AC, but ...
Brian Desmond's user avatar
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1 answer
62 views

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

I have a question about removing Hydronic Baseboard but keeping the boiler and water heater in place. Is this relatively straight forward? Shut off power Cut off the supply and return for the ...
Jake's user avatar
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0 votes
1 answer
187 views

Can I use just split units for winter heating if I have both mini splits and hydronic base board heaters?

We're trying to go all-electric/solar and reduce reliance on fossil fuels. We currently have an 11 year old propane tankless combi-boiler that supplies hot water and also circulates water through a ...
Kristoph Matthews's user avatar
0 votes
2 answers
129 views

Temporary water supply shut off to a gas oil fired furance

I have a oil fired furnace that supplies all hot water to the house (the house is on well water)including base board heat. If I shut the main supply off where it enters the house in order to install a ...
David White's user avatar
0 votes
1 answer
90 views

Brand new boiler only provides a 15 minute hot shower

My folks got a brand new boiler last year that is supposed to “continuously” heat water with no hot water tank. Our old system we replaced would run over an hour at least (I never once ran out of hot ...
Katie's user avatar
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8 votes
2 answers
2k views

What's the most energy-efficient way to run a boiler?

I have an electric boiler equipped in my house, and also a timer that make me schedule the time in which I want to turn on the boiler and heat water. I am looking for the most efficient way to run the ...
userq8957289475's user avatar
2 votes
1 answer
1k views

Soft black specks coming out of the bathroom hot tap

A couple of weeks ago we noticed that black specks were coming out of the bathroom hot tap. Whatever it is is soft: if you trap a piece you can smear it across the plastic of the bath and then easily ...
Bob Tway's user avatar
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Heat and hot water only gets warm on second floor

My heat and hot water only gets warm on the second floor. When I turn on my faucet and shower the water gets hot for a second then goes to warm also when I turn my heat on it takes a really long time ...
Tammy's user avatar
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0 votes
1 answer
473 views

Hydronic heating system is not working, but still have hot water

A couple of days ago, my hydronic heating system stopped working. Thankfully, the boiler is still working though, so I still have hot water. The details: When no one is using hot water, the boiler ...
red.october's user avatar
2 votes
1 answer
142 views

In practice, is it problematic to vent a gas-fired boiler under a bay window?

I am having a 199 kBTU direct vented gas-fired combination boiler installed. Because of how the house is arranged, it's difficult to find a good place to vent the exhaust. The easiest spot is ...
aquaticapetheory's user avatar
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0 answers
33 views

Should a supporting pump be at the bottom of it's loop?

I'm renting and the boiler is located next to my bedroom. A helper pump has been installed, but is very loud. And the boiler keeps failing, having to be reset. I heard that with water cooled CPU's the ...
MrFox's user avatar
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1 vote
2 answers
87 views

Replacing heat only thermostat

I have a two wire standard thermostat, RH & W It is heat only for my downstairs area and has a zone valve. To my boiler the RH wire goes up to the zone valve and the W wire is going to R location ...
Envieddesigns's user avatar
0 votes
0 answers
50 views

Boiler won't fire unless the water heater triggers the power exhaust fan

I have a PB MI-03-STDG-WPC boiler running on natural gas, and it's connected to a powered exhaust vent that it shares with my water heater (a separate unit). If it matters, the house is heated by ...
Corwyn's user avatar
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1 vote
1 answer
137 views

How should I modify piping for a Burnham Series 2E when the Indirect Water Heater is not used?

Can you provide a sketch (and if possible, a photo of a similar layout) of the piping if I omit the Indirect Water Heater as shown in the attached image taken from page 11 of the Burnham Series 2 ...
jconners's user avatar
2 votes
1 answer
309 views

Why does boiler need minimal demand before heating water?

If I turn my kitchen tap on hot to a gentle stream, the boiler doesn't turn on to heat the water at all. It will stay cold forever. It's only when I unleash a jet wash torrent of gushing water out of ...
theonlygusti's user avatar
2 votes
0 answers
107 views

How to wire relay for heat-pump/boiler with backup heater

I have two heat-pumps controlled by a tekmar 262 boiler control. The heat pumps heat water in a storage tank, which is then circulated through the house. The storage tank is designed for hydronic ...
Gary Aitken's user avatar
2 votes
3 answers
500 views

Is it a good idea to place an electric boiler on the warm water line?

I have a condensing gas boiler (tank-less) at one end of my house. I have a bathroom at the the other end of my house, at a higher level. In the morning if I open the hot water tap it takes about 15L (...
Andrei Rînea's user avatar
2 votes
1 answer
358 views

Why is my boiler losing pressure with no leak? [duplicate]

I have a combi boiler, this one, required to fill in 1.5 BA, 8 radiators, and heated floors in the same system. I have a pressure loss problem, I lose ~0.3-0.4 every week without visible leakage. I ...
Artem Ptushkin's user avatar
1 vote
1 answer
104 views

diesel powered heating - identification and advice request

I bought a house and the owner is a few steps removed from the last user of the house which leaves me at a loss as to who I even need to speak to about the machines and systems. My hope is that I can ...
Alex's user avatar
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1 vote
0 answers
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How does a Teckmar 262 boiler control determine the anti-short-cycle minimum boiler run time?

I have a ground source heat pump (econar 5T unit) being driven by a Tekmar 262 boiler control. The heat pump has anti-short-cycling protection built in; if the heat pump demand signal is turned off ...
Gary Aitken's user avatar
0 votes
1 answer
75 views

Boiler pressure goes up over time

I recently moved into a house which has a really old natural gas fired hot water boiler (repco) The pressure on the gauge goes up to 40-50psi if I don’t manually let out some water from one of the ...
John's user avatar
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1 vote
0 answers
70 views

Is my water heater tank system normal?

I bought a heating system a year ago for my house. It is a water heater tank. The hot water inside is heated when the price of electricity is cheaper during the night and two hours in the middle of ...
user avatar
3 votes
1 answer
201 views

Hydronic heating not working, but have hot water

I have a Navien combo-boiler system with two hydronic baseboard heating loops hooked up to it. Our on-demand water heating (showers, etc) are working fine. Both heating loops however, are not. I have ...
Havegooda's user avatar
  • 173
1 vote
1 answer
298 views

Viessmann Vitodens water temperature and pressure are inconsistent [closed]

We have a five year old Viessman Vitodens 100-W. We have noticed that this year the temperature of the hot water is not behaving as it consistently did before. There is an issue especially with the ...
mvhancock's user avatar
0 votes
1 answer
333 views

Is it safe to disconnect the condensate pipe from boiler

I, like half of the UK right now, have got a problem with my boiler, and like the majority of those people, I understand it to be a problem with a frozen/blocked condensate pipe. I've tried doing what ...
Andrew Morris's user avatar
4 votes
1 answer
71 views

Help me Understand Hydronic System Boiler Circulator RPM / HP / Head / Flow / System Pressure

Help me understand the correlation between boiler circulator RPM / HP / Head / Flow / System Pressure - see the particulars at the bottom. CASE: My 1986 boiler came with Armstrong S25 circ (same as B&...
Roz's user avatar
  • 61
2 votes
2 answers
503 views

Electric Boiler VS Electric Radiators hard wired

My four-bed house currently has traditional heating system with a combi boiler. I am looking at ways of lowering bills due to my gas usage being well over £300 a month already and its only November! I ...
Daniel Nash's user avatar

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