Should a boiler flue drip?

Most of the condensate in the flue should trickle back into the boiler where it is taken care of via a condensate pipe. But the odd drip at the flue outlet shouldn’t be a problem.

How do you stop flue condensation?

Here is the bottom line: The only way to avoid sustained flue gas condensation is to monitor the boiler’s inlet water temperature and react to that temperature by limiting the rate at which heat moves from the boiler into the distribution system.

What comes out of gas boiler flue?

The boiler flue is essentially the boiler’s chimney, but instead of smoke and soot being channelled away from the inside of the home, it’s mainly carbon dioxide and water vapour that’s emitted. It’s the reason all households should have a carbon monoxide alarm as well as a smoke alarm.

How do I know if my boiler flue is clogged?

Check the flue pipe where it is connected to the heater. You should open up the heater using your screwdriver, and then look at the connection. Wipe around the edge of the pipe using a cloth. If it appears oxidized, or there are white stains around the mouth of the flue, this can indicate that it is blocked.

Can a boiler flue leak water?

If it has, it’s likely that your flue has been fitted incorrectly and water is leaking back down the flue and into the boiler. They are designed to expand and contract to control the boiler’s pressure. If there is a fault with either of them, it can cause a leak.

Why is my flue pipe leaking water?

It could be that the exhaust pipe is the incorrect size. Another explanation for a standard efficiency furnace exhaust pipe leaking water is that the joints in the pipe are vulnerable, allowing condensation to build up. Have a professional check your flue pipe and patch any holes.

What causes flue gas condensation?

What causes the condensation in a boiler flue? With more heat entering the process there is less heat exiting out the boiler flue. The water vapor formed during the combustion is less likely to remain a vapor. As the temperature of the flue gas cools below “Dew Point”, the water changes state to a liquid.

How do you get water out of flue gas?

Use a desiccant to absorb the water. Another method is to use a desiccant to absorb the water. Flue gas passes through a liquid spray in an absorber tower. The desiccant absorbs the water.

Does carbon monoxide come out of boiler flue?

Carbon monoxide is a gas produced in a boiler when fuel is not burned completely due to a lack of oxygen. When carbon monoxide is produced, boilers release the gas outside the home via a flue. However, this gas can sometimes escape from the boiler system into the home and cause carbon monoxide poisoning.

Why is my boiler venting?

If you’ve noticed that your boiler is suddenly letting out steam, it’s most likely coming from the pressure relief valve. Your pressure relief valve is likely discharging steam and/or hot water for one of 2 reasons: The pressure levels inside the boiler are too high.

How does a boiler flue get blocked?

Blockages can be caused by old birds’ nests, dead birds, leaves or general debris. If your home is surrounded by trees, leaves and other debris, such as conkers or pinecones, can fall into your flue. The more these build up, the more your flue will become blocked.

Why is my flue leaking?

Without a properly fitted chimney cap, the flue and fireplace are left completely exposed to water entry from rain. If flashing is incorrectly installed, damaged, or merely loses its seal due to wear and tear or age, water can easily seep through any gaps.

What causes condensation on the inside of a chimney?

If it is, it’s likely caused by excessive condensation from a gas furnace or oil boiler. If the flue size is too large for an appliance, it will cause the exhaust gas to condense more quickly creating a lot of moisture in the chimney.

Do gas heating appliances cause soot in your chimney?

But many don’t realize that a gas heating appliance – whether it is a furnace, boiler or even a water heater – relies on the chimney for proper venting of the exhaust. Appliances fueled by natural gas or propane may not produce the visible soot that appliances burning other fuels do, but they can deposit corrosive substances in your chimney.

Why do I need a chimney liner for my boiler?

Over time, this excessive moisture can cause the flue to deteriorate. The easiest fix for this is to install a stainless steel chimney liner. But not just any liner will work for your appliance. An undersized chimney liner for a boiler or furnace will cause a limit switch to trip, turning the appliance off.

Why is there smoke coming out of my Chimney?

A modern chimney should produce little smoke when the heating system runs smoothly. White smoke coming from your chimney flue is actually steam produced from condensation as a byproduct of fuel burning.