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11

Gas leak A gas leak could be deadly not only due to inhalation, but also as an explosion hazard. Carbon Monoxide Carbon monoxide is an silent killer. It's colorless, odorless, tasteless, and can kill you before you know you're dead. Combustion Air If the home is sealed tightly, and a source of makeup air is not present (for example if the source is ...


9

Bleeding radiators is quite simple, and can usually be done by homeowners. All that's required is a radiator key, a towel and/or bowl, and a bit of time. Why Bleed Radiators Even with closed systems, air can still find its way into the system. When it does, it will collect at the highest points available (the top of radiators). Trapped air can cause ...


7

Try this on for size: Annual Oil Bill * Efficiency = Cost of Oil actually used for heating. (The rest is waste). So on an annual bill of $1000, you are currently paying $650 for heat, and $350 out the chimney. (i.e. $650 is as low as you can go with a 100% furnace) So, if you were to replace that with an 87.2% furnace, your annual cost would be $650/87.1% ...


7

Wiring Diagrams Locate the schematic In most cases, a wiring diagram can be located inside the HVAC unit. Typically, it will be on the inside of the access cover. Find the transformer on the schematic Once you've located the diagram, you'll want to look for this symbol. Or the actual text that says "Transformer", which may be labeling a crudely drawn ...


6

does the spin on that impeller (at a high velocity) really create enough momentum to move water up seven or eight stories? It doesn't have to create momentum as it isn't throwing water ballistically. It just has to create a small difference in pressure. Note that you ask about circulating water, not pumping it up into a tank. The pump does not have to ...


5

instead of sizing your current boiler, i would instead have a heating professional visit your home and calculate the heating requirements of your home from scratch.


5

Yes this is common in the UK. The boiler will feed hot water into the heating coils in the tank as well as providing the hot water for the radiators. The electric (or immersion) heater will be there either as back up (in case the boiler fails) or to heat the water on cheaper electricity (Economy 7) overnight. There'll be a thermostat on the tank which ...


5

Fuel Sources Coal Wood Propane Natural Gas Oil Electricity Biomass Pellets Sun Earth Nuclear Fission Heat Transferers Gas Liquid Heating Systems Furnace Boiler Heat pump Electric heater Wood stove Fire place pellet stove Tauntaun


4

If you get good ignition and the boiler's ignitor stays on the entire time even after you have flame, then your flame sensor or controller is probably broken. Otherwise, you have a mixing issue. Either not enough air is being moved by the fan or oil is not flowing sufficiently, possibly because of issues with the nozzle. The 3 times lockout is a safety ...


4

Electric water heaters lose very little heat. Putting a blanket on them or putting them on a timer won't save much money. NG/propane/oil water heaters, on the other hand, lose significantly more heat, as they not only lose heat through their outside surfaces, but also even more heat via the flue. Putting a blanket around the outside will prevent perhaps ...


4

The room thermostat does not control the boiler directly. Instead, it controls a circulating pump that draws heat from the boiler and delivers it to the radiator(s) in the room. It is the removal of heat that subsequently causes the boiler to fire, when its thermostat indicates that its internal temperature has dropped because of the heat removal. It sounds ...


3

The basic chemistry of efficient natural gas burning is about a 10:1 air to fuel ratio. The air at high altitudes has less oxygen per volume (the air is less dense) There are a number of ways to compensate. Derate the burner by decreasing the fuel orifice size. This returns the burner to the correct air-fuel ratio, but produces less heat. This method ...


3

I have a gas hot water base board system with an expansion tank. The tank has a drain valve to which I can attach a garden hose. I drain the tank at the beginning of the heating system and check it on occasion. If the gas boiler pressure rises quickly then the expansion tank probably needs draining. I may drain mine once over the winter. I don't understand ...


3

Get it checked. Sudden stopping and reigniting can cause blowback. Not real dangerous, but if it stops and loads up with enough fuel and lights, it can blow back smoke and soot. What you are hearing is not normal, at least talk to your licensed tech about it.


3

A lot depends on the type of system you have. If you have a system or combi boiler, it could be the diverter valve which is faulty. This will be in the boiler itself. If you have a Y-Plan system with a three port valve, it could be the three port valve which is faulty. These are usually found in your airing cupboard or in your loft.


3

If your pressuretrol is truly acting up, I would replace it. I'm sure you've already ensured the pigtail is free of sediment, etc. In my experience as an HVAC controls tech, once mechanical controls start to act up, it's usually more cost effective to replace the item in question than continuing to rely on a compromised pressuretrol. (Murphy's Law is in ...


3

As long as the boiler is capable of providing enough hot water through the system to heat the whole house if necessary you shouldn't have a problem. What you are proposing is a "coarser" version of thermostatic valves on each radiator and that is perfectly safe for a combination boiler. I don't think you need return valves. Make sure that you leave one ...


3

My favorite pipe thread sealer is RectorSeal #5. Here's a link. I see according to its datasheet that its rated for steam pipes. You might have to let it dry a little while before pressuring, but after that its good for 2600 psi.


3

One word......YES. By a licensed burner technician.


3

I know you're in the UK, but I'll answer for the US in case someone there has the same question. Boilers and furnaces must be powered by a separate, grounded circuit. Any metal piping system that is likely to become energized must be bonded, including gas pipes, but the equipment grounding conductor run with the circuit conductors feeding a gas appliance ...


3

Any chance the gas is shut off to the boiler (for the summer) and it just needs to be turned back on? Look for a valve leading to the boiler in that general area (usually there will be a shut off valve on the gas line close to the boiler).


3

It's quite normal for the jets to slowly reduce in size as soot and tar (depending on the gas being used) build up along the walls of the jet opening. If the jet hasn't been lit for some time the soot can "fluff up" and effectively block the hole, at least to the point where the gas flow is no longer sufficient to establish or maintain combustion. In such a ...


3

I've never had a boiler, so I'm not sure if this will help, but my furnace's pilot light kept shutting off after it tried to start up. I ended up having to clean the flame sensor, which is a metal bar that sticks into the middle of the pilot light. It had a white buildup on it, and it wasn't able to sense the pilot flame, so it shut down to prevent filling ...


3

You have probably fixed the problem - at least temporarily. The boiler requires that this condensation pipe is clear and unobstructed and removing the ice from the end has cleared the blockage. However, it's likely that the pipe will freeze up again - especially in this cold weather. The solution is simple - insulate the pipe. Either use something like ...


3

Low water Air lock or circulator not working is most common problems. What is the pressure of system ? Should be around 12 cold 20 hot. Add water to system if lower. You may have automatic feeder. Check for any air bleeder that can be open.


3

For rented or owned accomodation the HSE guidance is reasonably clear Since 31 October 1998, any room converted to use as sleeping accommodation should not contain the following types of gas appliances: A gas fire, gas space heater or a gas water heater (including a gas boiler) over 14 kilowatts gross input unless it is room sealed. A gas fire, ...


3

The advice is for the purpose of avoiding frozen pipes. The larger the difference in thermostat settings, the longer the heat will be off. The longer the heat is off, the bigger the temperature differences between the cold parts of the room and the warm parts of the room. Your thermostat is likely to be in a warmer part of the room (inside wall, at eye ...


3

We ended up bleeding the radiators, upping the pressure, and replacing the thermocouple. After all of that, we discovered that flames had been shooting out of the front of the boiler and melted half of the valve, messing up the electronics for the pilot light. We ended up replacing the entire boiler since it was 35 years old anyway, but the reason for the ...


3

Other than looking for hidden bleeders (i.e. I have one where the baseboard cover needs to be removed to reveal the bleeder) and bleeding any bleeders that you can find, you may need to swear at whoever put in the new radiators and retrofit bleeders where they are missing. There is often an automatic bleeder/vent on or just after (in which case it's often ...



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