Is a vent damper necessary?

A vent damper is an automatic devise that shuts off the flue pipe when the burner is not running. A vent damper has no effect on the running efficiency of the appliance. It only saves off-cycle losses of heated air. Therefore, if the appliance is in an unheated space, there is no benefit to a vent damper.

Do all oil furnaces need a barometric damper?

Oil burners, which are forced draft (the fan pushes air into the combustion chamber), require a single-acting barometric damper. That’s why we need to allow room air into the vent to balance the pressure, control the draft rate and allow the exhaust to flow up the chimney.

Do oil boilers need ventilation?

Most new oil boilers will use a balanced flue as standard as they offer greater versatility in siting the boiler. Balanced flues do not require additional ventilation for the appliance to operate correctly as they are designed to carry fresh air in form outside to facilitate combustion.

Do gas water heaters have a barometric damper?

Note: All Power Gas heaters must use a barometric damper.

What is the purpose of a vent damper?

What is the purpose of a vent damper? The idea is to retain the heat in the block during the boiler off cycle and to prevent the chimney from drafting air through the boiler and up the chimney. This raises the AFUE a point or two, and ideally saves the end user in fuel usage and operating cost.

What is a backdraft damper for exhaust fan?

Backdraft dampers allow air to efficiently flow through exhaust ducts to the outside, yet prevent the unwanted flow of air into a house when the exhaust fans are off. These dampers are most often used in bathroom exhaust systems, clothes dryer vents, kitchen range hoods and microwaves.

What is a backdraft damper?

Backdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. Backdraft dampers can either be operated by gravity (where pressure or velocity opens and closes the damper) or motorized to open and close when required.

When would you use a barometric damper?

A barometric damper is needed to help assist the chimney with proper function. A barometric damper regulates the chimney draft. Over time pressure can build up in the chimney ducts and the barometric damper job is to regulate and release the built-up pressure.

Where do you put a barometric damper?

The barometric damper is installed in the flue between the boiler and the chimney. It is set for the desired draft conditions using weights and adjustment screws.

Does a room sealed boiler need ventilation?

Although the boiler cupboard may not require any form of air vents or additional ventilation, the boiler requires oxygen in order to burn the gas correctly. The flue is the pipe that allows the waste gases produced by your boiler to be released from your home.

Does a back boiler need ventilation?

Back boilers are generally no longer installed unless it is too complicated or too expensive to install a condensing boiler. Back boilers are “open flued” which means that there must be an open vent to allow fresh air in to replace the fumes that go up the flue.

What comes out of an oil 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.

What is a pressure relief damper?

Pressure relief dampers are backdraft air dampers with an adjustable start-open pressure. This provides the capability of maintaining a relative constant pressure at various airflows. The damper closes when there is a decrease in differential pressure. This damper is generally used as a safety or controlling device.

What is a barometric bypass damper?

The barometric bypass dampers relieve excess air in duct systems through the use of a counter-balanced controlled arm weight. The weight can be moved either direction along the entire length of the arm to allow the damper to open at the desired pressure.

What is stack damper?

Stack dampers are used to reduce heat loss and prevent rain water from entering your process. Due to the environment these dampers are subject to, it is important that you choose a durable damper from a reliable manufacturer. Utilizing a standard size stack damper is most economical but not for all applications.