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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How can I figure out if a Combi Boiler will be adequate for my house?
We recently moved into our new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, it's done its job and in need of a replacement. We had ...
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29 views
Using existing hot water vent for extraction
I have a room in the basement with equipment (computers) that gets really hot. There is an ac vent but the thermostat is nowhere near the room.
Also in an alcove is the hot water heater behind a ...
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1answer
15 views
Adapter for NTC boiler probe
I just bought a replacement NTC probe for my boiler (bought with specific part number) but once the item arrived I noticed the connector wasn't matching. I think this is due to past maintenance when ...
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2answers
27 views
Why does a system boiler with hot water cylinder not use a diverter valve?
I understand that it doesn't need a diverter valve... But I was thinking, couldn't the system be more efficient with one?
For example, the central heating could run at a low temperature (35°-40°) and ...
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4answers
128 views
Are individual electric heaters more efficient to operate than an electric boiler?
(Edited to provide additional info)
My wife is looking to buy an old house (I'm guessing 19th century) that'll need a lot of renovating, including the heating system. Renovation works will include (...
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22 views
Boiler not circulating
I have a Bosch 30 HRC boiler. Yesterday, I added water to the system, increasing the pressure from 1 bar to just below 2 bar. I vented each radiator in the house to bleed the boiler.
When I open the ...
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1answer
29 views
Vaillant aquaPLUS filling loop
I have to repressurize my Vaillant Aquaplus gas boiler, and I couldn't understand from the manual where exactly the internal filling loop should be fitted.
The water pipes don't have any valves ...
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56 views
Why do I measure 12VAC on old thermostat wires?
I'm installing a nest thermostat in my house - it's the UK version with a heatlink. I have successfully wired the heat link into my combi-boiler, disconnecting two existing wires in the process.
I ...
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1answer
59 views
Keston C36 Combi boiler - Error E37
According to the boiler manual
E37 Water pressure error - You must top up the water pressure for your system
When opening the fill loop valve to add water pressure, water flows out the exhaust ...
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1answer
25 views
Use CLR to clean stuck bleeder valve
I was bleeding the air out of hydronic heating zones and I notice some mineralization on bleed valve attached to my air scoop. I took the Schrader valve cap off and tapped the valve I noticed it was ...
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2answers
108 views
Is storing hot water over 140F a regional requirement?
It seems to be "common knowledge" that to help prevent Legionella, hot water tanks/heaters should be set at 140F. This temperature is enough to cause terrible burns and scalding so devices like ...
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203 views
How do I fill a hole surrounding a boiler flue?
The flue for my boiler has a large hole around it, presumably from when it was put in. I'd like to fill it in because it's unsightly, but in not sure of the best way to do it, as it's a large hole and ...
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71 views
Thermostat Upgrade, furnace C-wire reading low voltage
OK so here is the scenario.
Upgrading thermostat from dumb to smart (Ecobee). I've done 2 others in my house that required re-wiring so I have a good sense for what should be done but I'm stuck.
My ...
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2answers
109 views
29 volts too much for a 24 volt thermostat?
I replaced a digital non-programmable thermostat with a programmable thermostat and the new thermostat keeps the house around 60-62 no matter what temperature I set. When I contacted the manufacturer,...
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2answers
50 views
Does the circulator in an indirect fired water heater point towards the boiler or towards the tank?
In the manual for my SSU-119 indirect fired hot water heater, the following text seems to suggest that the circulator points towards the tank:
On the water heater, the boiler supply connects to the ...
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3answers
45 views
Boiler PSI is at 35 how to reduce it on a Burnham 204 gas installed 2000
I have high boiler pressure at 35 with no noticeable pressure venting, that’s probably a broke value and I don’t know how to reduce it.
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High elevation non- pv Burnham boiler with Tejurland powerventer installed at sea level [duplicate]
I have a 203ncl-tei2 boiler installed in danvers Massachusetts. This town is at sea level, not 2000k miles up. This boiler also has a failed tejurland (universal control) powerventer motor on it that ...
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U.s. boiler / Burnham boiler alterations
i have a 203ncl-tei2 boiler installed in danvers Massachusetts. Regular elevation. This boiler also has a failed tejurland (universal control) powerventer motor on it that is only humming, not ...
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1answer
30 views
How can I control my furnace fan from a secondary thermostat?
I have a WaterFurnace geothermal system with upper and lower level zones. I recently added an outdoor wood burner and my issue is that I want to use a secondary stat to run the furnace fan during the ...
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1answer
52 views
Can a C wire be added to an old Teledyne Laars JVT-100C boiler?
Good morning. I have an old Teledyne Laars JVT-100C Boiler, that only has R,W,A terminals. is there a way to add a C wire to this boiler in order to power my thermostats?
Thanks in advance...
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2answers
54 views
How do I know when a water heater's relief valve should be replaced?
My relief valve has been leaking lately. It looks like its not working right. How do know when its not working right? Its leaking from the end of the pipe the spring seems like its not working right
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Oil Boiler - Pressure Valve leaking even after replacing Expansion tank
my oil boiler has a mawp of 30 psi and the old expansion tank was 18 psi rated, when i started noticing that pressure relief valve has started leaking 2 gallons a day, i notice the expansion tank had ...
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2answers
44 views
Radiators no longer heating up after cold weather
I have a Worcestor Danesmoor boiler that lives in a stone outhouse and heats the water and radiators in my house.
The heating is set to come on at certain times of day, but during some recent cold ...
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9 views
Combi boiler pressure drop - even after expansion vessel has been emptied and recharged
Recently had an issue with my ~5 year old Baxi Platinum HE 24 combi boiler.
Pressure had dropped and needed topping back up 3 times a day to retain pressure and not get any errors.
Got a heating ...
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178 views
C-wire on Weil-McLain CGA Series 2
I have an old thermostat with only 2 wires connected to my Weil-McLain CGA Series 2 boiler.
I would like to replace it with a Nest thermostat.
I need to add a C-Wire in order for it to work. Luckily, ...
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1answer
101 views
Can't get wifi thermostat to work with gas boiler
I bought a Sensi WiFi thermostat and I have been trying to install it. I can't quite figure out how this wiring should work. Here is a link to pictures of the boiler and the current thermostat. The ...
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1answer
162 views
How to connect c-wire to Burnham Series 2 boiler?
I am trying to install my ecobee 3 light but the previous thermostat did not use any c wire. Fortunately, there was an unused wire in the wall and I would like to set it up as a c-wire. The problem is ...
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1answer
32 views
Leak in boiler system
Have concrete slabs heated with an HTP boiler. 4 manifolds (2 supply, 2 return w/shutoffs). Had a loss of pressure and low water pressure error on boiler. I have isolated the leaks off the manifolds. ...
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1answer
48 views
how to connect C wire for ecobee lite to Weil-McLain EG Series-5 gas steam boiler
I want to upgrade from a battery powered Honeywell thermostat to an ecobee3 lite.
This is for heat only.
My current Honeywell has two wires: Red and White. Missing is the C cable.
There are enough ...
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1answer
147 views
Zone Controller T-Stat Wiring w/ 24V transformer, isolation relays for 2 zones
I have a new Navien SmartZone+ 6-Zone Control for my boiler-based heating system. It is great, except it provides no power on C.
I realize the internet has researched the heck out of adding a C ...
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16 views
Valiant Boiler - 3 months old
In September I had a Valiant boiler fitted in my 2 bedroom house. It hasn’t worked properly ever since. Every time I put the heating on my pressure drops from 1.5 to 0.3 bars and I get the spanner ...
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2answers
84 views
Is there harm in using my mini-splits in conjunction with my hot-water baseboard heat?
My new house has a natural gas boiler with three zones of radiant baseboard heat (one per floor). It also has a mini-split system (again one head per floor). The mini-split was advertised as air ...
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1answer
209 views
Glow Worm Flexicom HX boiler F11, F22, F25 Error codes
This is less of a question, but more of a list of things we tried to stop the frequent F11, F22 and F25 error codes appearing on our Glow Worm Flexicom HX boiler which would stop it from functioning. ...
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2answers
58 views
Hot water (steam?) gas boiler not engaging burners, low pressure, sight glass full
At the beginning of the winter season my boiler wasn't turning on, but I got it to work by turning on the inlet valve and just letting it feed water until the gas burners kicked in. The sight glass ...
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1answer
214 views
What kind of tubing should I use for draining condensate from a furnace / boiler?
"High efficiency" & condensing boilers or furnaces produce an acidic water byproduct called condensate that has to be drained away.
My boiler has an outlet fitting for this condensate water but ...
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3answers
43 views
Would replacing my boiler's control board resolve intermittent issues after a water leak?
My Potterton Suprima HE 60 is approaching 10 years old. A few years ago it went badly wrong because the metal flue had corroded (known design flaw) and condensate had dripped down through the boiler.
...
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1answer
30 views
If I only want to pressurise central heating not hot water should I get a regular boiler or system boiler
My boiler has packed in, the heat exchanger has failed and the consensus is that was due to sludge, gunk in the system, also consensus is would be better to pay a bit more and get a new boiler and ...
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1answer
50 views
Will a Gledhill Boilermate 2000 work with a Honeywell Evohome thermostat?
Our flat uses a communal CHP system, with a Gledhill Boilermate 2000 in our flat (i.e. we don't have direct access to a gas boiler).
We're looking to set up a Honeywell Evohome system consisting of a ...
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2answers
42 views
Multiple boilers, one expansion tank and fill mechanism?
For a building with two boilers serving separate apartments, I'd like to simplify my design by having only one auto-fill and backflow preventer, and only one expansion tank.
These are combi boilers ...
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14 views
Boiler not modulating when using DHW
My combi boiler when I'm using DHW is behaving on/off (making annoying fluctuations in DHW temperature) but modulates when I run my heating system. What's wrong with it? My boiler is a Hermann (now ...
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1answer
51 views
Leak from valve on boiler - what should I do?
I have this valve which we use on the boiler to increase the pressure but it has just started leaking and is dripping through our ceiling.
Can anyone suggest what I need to do to stop the leak?
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1answer
228 views
Sizing a circulator pump in a closed loop heating system with multiple zones
I'm thinking through an install of a new combination boiler in my house, and am confused with respect to picking the correct size circulator pump. I've found a few different references (e.g. https://...
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3answers
212 views
How do I bleed a noisy radiant heat system?
I have a gas fueled (converted from oil just a few years ago) boiler in my basement with an integrated tank-less water heating system for the showers/taps/etc. The output is three zones as shown in ...
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3answers
84 views
Can I reverse my heating zone?
I have a three zone hot water boiler based heating system. The boiler is currently at one end of my ranch style house. The radiators appear to be directionless (no valves or anything). One of the ...
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Do I need to replace the thermostat wiring leading to my boiler?
I have a boiler in an old building with four different apartments. There are two thermostats that call for heat from the boiler, and valves that direct the hot water to the respective part of the ...
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1answer
23 views
Customizable boiler water load
I need a boiler to produce hot water for my bathroom. I wonder why boilers usually don't let you customize how much water they should contain. I only need to warm up 80 litres if there are guests in ...
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Gas line addition to external building - can I avoid expanding all existing lines?
I'm adding an external building with hydronic heating and a variable boiler (160k BTU max) which will be about a 100' feet from the existing gas meter.
I had planned to simply tap into the existing ...
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2answers
213 views
Can i get electrocuted with boiler
I just got my new electric Bosch boiler because my old one has been making strange noises, now im a little bit scared.. can i get electrocuted trough water while im showering..should i turn it off ...
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1answer
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Water is coming out from shower hose every time I use water in any part of my house
The shower water seem to have a life of it’s own.It is not stopping regardless. When using the sink or washing machine, even the kitchen sink, the shower stream changes dynamicly with a pumping sound. ...
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1answer
131 views
Condenser is always running
I recently rewired two thermostats into one Honeywell RTH9580WF1005 Wifi Thermostat. I ran a new wire and hooked up R and W to the oil boiler and Rc, C, G, and Y to the Goodman air handler. The Y is ...
