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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Boiler turns on briefly throughout the night
We moved house a few months ago and our property either has the same or a very similar boiler to our old house. It's a condensing boiler, a Worcester Greenstar 37cdi and the controls look identical. ...
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Should condensate pipe go below vent and how?
Need to lay condensate pipe from the boiler room to the waste pipe, on the other side of my flat. Will use condensate pump and use loft as proxy.
I want to drill through ceiling from my boiler storage ...
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Hive Wiring Advice - Combi Boiler
I've just moved house and am trying to wire up the hive (as I did in my previous house with no problems). I have a combi boiler (Ideal Logic 30) and a single-channel hive receiver. The old thermostat (...
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1answer
65 views
I think my gas boiler flue looks off
We had a gas boiler installed. The registered installer did not highlight any issues with fitting the boiler before fitting it. I was away when the job was done and now there is a "snorkel" ...
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Trying to wire a nest thermostat E in UK with 2 live wire and 2 neutrals
I live in the UK and am trying to replace a Honeywell WiFi thermostat with a Google Nest thermostat E. I have 2 3-core wires coming into my thermostat, 2 live and 2 neutral wires, 1 pair I believe are ...
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51 views
Can I build a small basement under wood cabin and add an electrical boiler 30L for shower and sink?
Can I build a small basement under wood cabin and add an electrical boiler 30L (e.g. Ariston Andris) for shower and sink that would be at ground floor?
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79 views
Can't get boiler to stop heating! It's 80 degrees in the house
I have two boiler systems. One for the heating of the house, and one for sink/shower hot water.
The boiler for the house will not turn off! It does kick on and off for a duration of time like it ...
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30 views
How to further troubleshoot a problem with my condensate pump?
During a recent trip to be basement I noticed that the floor was wet under my condensate pump. This pump collects the water from my water heater but it's powered through my boiler.
There was a lot of ...
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19 views
Is there a way to relieve the pressure on a model 30 expansion tank without draining the system?
I want to change my Xtrol model 30 expansion tank on my boiler. It is not waterlogged but 15 years old and I'm getting ready to sell the house. Plus the pressure has been going a little higher than ...
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2answers
170 views
Why do some multi-zone heating systems have multiple circulators?
In a lot of photos I've seen here and elsewhere of hot water home heating systems with multiple zones, each zone has its own circulator.
In my two-zone system there is one circulator, with a zone ...
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49 views
Can I have independent heating zones with a standard boiler?
We have a new standard gas boiler in our home along with two thermostats, one for the basement and one for the rest of the house (living room, bedrooms, etc).
The problem we're having is that the ...
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30 views
How do I test and maintain the expansion tank on my boiler?
I don’t know what maintenance or adjustments are possible on an expansion tank. I understand from the answer to this question that it needs to be "pre charged" to accommodate the range of ...
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44 views
How can I increase boiler system pressure so bleeding 3rd floor radiators is easier?
It is very difficult to bleed air out of my 3rd floor radiators. I need at least 23 pounds according to the gage on the boiler, and ideally closer to 30 (but not too close!), to speed things up. The ...
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41 views
C-wire nest to burnham boiler
Connecting nest learning 3rd gen to burnham series 2 model 203 boiler. I am only using the system for heat. I have three wires at the thermostat R,W and an unused green that I would like to turn ...
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1answer
48 views
How do a boiler’s autofill valve and expansion tank work together as a system?
How do the expansion tank and automatic fill / reducing valve work together in a hot water heating system? It seems to me that if the expansion tank is charged too high the autofill valve will never ...
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1answer
65 views
Does this boiler flame look ok?
This is my natural gas hot water heating boiler flame. It lights up initially with a fair bit of orange flame, and after 10 seconds or so settles into what's pictured. I believe it mostly looks as ...
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29 views
Boiler Gauge Readings
Trying to understand this gauge and ensure everything is working as intended.
I know the top part is the temperature of the water I am assuming at the boiler. Again PSI of the water pressure, but what ...
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3answers
110 views
Where can I install a C-Wire for Weil-McLain gas boiler? (EGH 115, 4 Series, Natural gas)
I want to install a C-wire so that I can use a WiFi Thermostat.
Behind my current thermostat there are only 2 wires (red and white)
There are 2 wires tucked and unused, (green and blue)
I had tried ...
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1answer
31 views
Gas Boiler Furnace not igniting
So I got a boiler that had not been used in a bit, maybe a couple of years but was working. The last time they needed to have some come light the boiler. My assumption there was the ignitor was going ...
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1answer
41 views
Should I get a condensing boiler or atmospheric boiler for cast iron radiator system
I am looking to replace the boiler as part of a basement reno. The house was built in 1903 and has cast iron hot water radiators but we've done a fair amount of work to it, added insulation and have ...
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2answers
96 views
How can I switch a circulation pump between continuous power and thermostat control?
I have a dedicated 20 amp circuit powering my boiler's control unit. The control unit is basically a relay operated by the thermostat that 1) fires the boiler and 2) turns a circulating pump on and ...
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1answer
62 views
No water flow through zone of water boiler, all other zones working. How to get water flowing?
tl;dr - How can I get water flowing through one of my zones of a baseboard boiler heat system?
I have baseboard boiler heat with 10 zones (5 per boiler). One of the zones (unfortunately, it's our ...
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22 views
Oil burner Fuel line adjustment
In my crawlspace, I have an oil tank at the front of the house, with the fuel line running to the rear of the house where the oil burner is located. Fuel line is on the floor, running mostly along a ...
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12 views
Adding Aquastat for hydronics to existing steam boiler
I have a steam boiler in a residential home of a friend of mine. He asked me if I would take a look at his system. Someone added a circulator to his steam boiler so that he could get heat in his ...
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Water heater boiler has nasty red sludge leaking out of it
My water heater wasn’t performing as expected today while attempting to draw a 2nd bath. So I went to look and the rusty water leak seemed somewhat prominent, so I’ve gone ahead and opened up the unit....
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Heating Issue — hot water baseboards
and thank you.
I have a gas hot water boiler, two story house, hot water baseboards on top and first floor, boiler in the basement, separate circulating pump and loop for each floor.
The boiler kicks ...
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2answers
105 views
How do I bleed a very old radiator and identify whether my system is steam or hot water?
All radiators are heating except one, so I'm trying to bleed it. There doesn't seem to be an obvious bleed valve (unless it's that nondescript, frozen, simple bolt on the top front corner of the left ...
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1answer
96 views
Filling a Viessmann Vitodens 100W that has dropped to minimum pressure
I have a Viessmann Vitodens 100-W that heats my house, and I presume delivers hot water too.
I must confess I have been negligent, and never had it serviced. The unit is 8 years old. I will get it ...
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1answer
58 views
Extra powerful boiler short-cycling and overfilling
I have a gas powered steam radiator heating system with 8 radiators in the entire house. I replaced my old heating boiler with Crown Bsi138enpzzpsu 138K BTU which is way too powerful for my house.
My ...
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1answer
87 views
How do I move a hot-water convector?
I have a "breakfast nook" section of my kitchen with a large hot water convector installed along the baseboards of two walls. Because of other elements in the heating system located close ...
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1answer
63 views
How to find source of leak in heating pipes under concrete / glued floors?
Update 2021.01.11
In case this helps anyone - I was able to trace the leak and make the repair in the end. Steps were this:
Locate leak as closely as possible by isolating areas of the heating system ...
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32 views
Should I clean my boiler room duct (ventilation)?
Our boiler room in our house is in our half above/half below ground basement. We have a new 100,000 BTU boiler that was installed last year. We also have a gas hot water heater next to it. In the ...
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1answer
62 views
Why does my first floor thermostat also make my third floor baseboards turn on?
(Possibly related to this question but I do not have the expertise to diagnose at the level of the author of that question)
I moved into a new house recently that was billed as having three heating ...
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1answer
46 views
Thermostat C wiring issue
I am having a two-wire system oil boiler with two-zone valves. I installed two Nest E and worked fine but it started to swing the valves due to the charging cycle. So I decided to run a new C wire ...
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12 views
Why is my boiler intermittently shutting off?
I have a Burnham boiler model pvg8ani-gs.
It shuts off for no obvious reason. It might run for 1 minute or 30 seconds and then might stay running.
I have replaced the board and it still has the same ...
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1answer
899 views
Bleed radiators with no valve - is this valve near the boiler what I want?
I recently bought a house, and with the winter starting to set in (UK), have started putting the heating on in the mornings/ evenings.
As many people are at the moment, I am currently working from ...
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3answers
109 views
Can I use 1 Nest Thermostat with 2 boilers?
I have 2 boilers in my house. 1 is for the main house and the other one is for the annex which is built a few feet away from the main house. My 1st boiler is connected to Nest thermostat. Can I ...
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1answer
84 views
Why does my Vaillant boiler shut itself off every day?
I'm subtenant and I have Vaillant boiler (don't know which model). Every time I use shower after few minutes boiler shuts itself down and the burner lockout indicator is flashing. I'm then without hot ...
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157 views
help me find C wire on williamson boiler and where should I connect it
I have Williamson boiler GWA 140,000 BTU. I have 2 zones in my house for heating. On one zone I want to install smart thermostat so, I need C wire. The old thermostat for this zone had 2 wires: red ...
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1answer
269 views
c wire on a multi taco zone valve boiler
looking for assurance on what I think is the right setup to add a c wire to a current 2 wire zone setup. See pic of transformer junction box.
Currently I have 3 zones using one transformer and 3 taco ...
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24 views
Zone valves and air purge
I have a 3 zone boiler system with baseboard heating. Zone 1 & 2 have nest thermostats, zone3 has a non-programable thermostat. Zone 2 & 3 are not getting hot. Pipes are hot about 3-4 feet out ...
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121 views
Problems w/ Nest
I've got a common problem but I can't seem to find the simple answer. My heating system is simple. Forced water oil boiler with three zones. Two zones are controlled by the Nest E Thermostat. I'm ...
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1answer
204 views
Where do I connect a C-wire to my electric boiler ( Slant/Fin Monitron Boiler )
I'm looking to add a C-wire for my thermostat. My current thermostat has two wires, W and R. But there is another tucked in blue wire. That blue wire isn't connected to the boiler. I'm looking for ...
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1answer
55 views
Where should I place the C wire?
I have an old Lennox boiler which doesn't appear to have a PCB board. Originally the old honeywell thermostat had a 2 pair wire attached which included Red and White Wires. I snaked an 18/5 thermostat ...
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2answers
60 views
What is this strange valve/trap from my boiler to condensate pump?
I have a condensate pump attached to a valiant combi boiler with the usual pvc pipe turning into it (removed in picture, but works fine going into the point behind the copper pipe here), with the also ...
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1answer
62 views
What should the input pressure be for a hydronic system?
I have a boiler that's operating range is 12 to 30psi.The documentation says that it loses "efficiency" at the low end of of the operational pressure range. When looking at pressure reducing ...
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79 views
How do you connect a Nest thermostat to a Noritz CB199 DV combi boiler?
I have only one zone and I'm using the internal boiler pump. I do not have any zone valves. I have a 24v transformer and a White Rodgers 90-370 relay.
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38 views
Gas boiler cuts out after being switched on
When I switch on our gas boiler (mynute he), it turns off after approximately 2 seconds. Link to newer model here https://www.vokera.ie/homeowners/boilers/mynute-vhe-2/
I checked a radiator to see if ...
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28 views
Boiler System heats one room more than all others
I have a two zone older natural gas boiler system. All rooms in the house get heat. One room on the second floor gets hotter than all others. Almost like all the heat is going to that room I don’t ...
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1answer
79 views
How does a water mains booster pump work? Isn't the flow rate solely determined by what reaches the property in the first place?
When getting quotes for a boiler replacement, we've been recommended to install a mains booster pump (e.g., Salamander HomeBoost). We live in a 3rd story UK flat and currently get a dismal 5 l/min ...
