A draught diverter is a form of draught break intended to prevent conditions in the main length of flue from interfering with the combustion performance of an open-flued appliance. It allows the appliance to operate without interference from down-draughts that may occur in adverse wind conditions and excessive draught.
What is a draft diverter?
The draft diverter is situated above the primary flue and regulates the direction and amount of air flowing in and out of the burner.
What does the draft diverter do in the case of a downdraft in the flue pipe?
The draft diverter addresses this issue by preventing the backdraft of exhaust gases into the room. It gathers nearly all combustion products from the primary flue, diverting them to the secondary flue, which then vents them safely outside.
What type of furnace has a draft diverter?
Low-Efficiency Furnaces (Less than 78%) Older style furnaces can be called draft-hood furnaces because they draw combustion and dilution air from the room in which they are located; the dilution air enters through a draft hood (also called a draft diverter).
What three functions does a Draught diverter perform?
A draft diverter, or draft bonnet, plays a vital role in the operation of a combustion chamber, such as a fireplace or furnace. The draft diverter, which consists of a baffle plate positioned directly above the primary flue, regulates the direction and amount of air flowing in and out of the burner.
How does a Draught Stabiliser work?
Draft stabilisers are secondary air inlets fitted to the chimney. By allowing additional outside air to enter the system, these inlets regulate the pressure inside the chimney. The flap opens whenever the pressure level falls below a certain value and closes after the pressure has been equalised.
Can you put screws in B vent?
It is acceptable to use screws to attach the B-Vent to the appliance outlet.
Why do furnaces have negative drafts?
Furnace draft, or negative pres- sure, is created in fuel-fired furnaces when high temperature gases are discharged at a level higher than the furnace open- ings. This is commonly known as the chimney effect. This negative pressure causes ambient air to leak into the furnace.
What is a Draught Stabiliser?
A chimney draught stabiliser is a device fitted to a commercial flue system to control the draught of the system to a specific level. They are essential as a stable draught is important to ensure optimal combustion – irrespective of whether you use oil, gas or other solid fuels.
How do I check my draft flue?
Normally we measure draft at two locations: over the fire or in the combustion chamber where typically we may see -0.02 to -0.03 inches of water column pressure, and in the breech or at the stack pipe (properly, the flue vent connector) measured just a few inches above the boiler or furnace top, and before the …
What is a draft diverter on a water heater?
Draft Diverter. The draft diverter is a steel cap that sits on top of a standard Atmospheric gas water heater. The draft diverter is designed to capture all of the carbon monoxide from that gas burning appliance. The flue pipe or vent that terminates through the roof is directly attached to the draft diverter.
What is the purpose of the draft diverter on a gas furnace?
draft diverter. . This opening at or near the top of the appliance allows room air to be drawn into the chimney. As the draft condi-tions change in the chimney, more or less air can be drawn through the draft diverter as necessary. This allows the burner to see a constant air supply regardless of outside temperature differentials or wind.
What does the diverter valve do?
Diverter Valve is a valve which is used to divert the flow of crude oil, petroleum products or natural gas from one source to multiple destinations. The valves also have many industrial applications particularly the ones which make use of liquid or gas as a medium to be used or transported in multiple directions into various process units.
