AHG Solutions Guide_Edition 2.7
Full Product and Solutions Guide - Automatic Heating Global Pty Ltd
Full Product and Solutions Guide - Automatic Heating Global Pty Ltd
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Contents<br />
Draft Regulator - Flue Systems<br />
Draft Regulators<br />
Introduction to<br />
Draft Regulators<br />
For proper operation and efficient fuel consumption in gas,<br />
oil & biomass heating boilers, draft must remain constant.<br />
When it is, combustion is more complete, fuels are utilized<br />
efficiently, and money is saved.<br />
Draft Regulators maintain consistent draft by counteracting<br />
the negative forces caused by changes in temperature and<br />
barometric pressure, as well as the effects of wind.<br />
How draft regulators work<br />
Static pressure of the cool air (1) illustration A exerts<br />
pressure on the outside of the furnace or boiler and the<br />
stack. The pressure difference between the room air and<br />
heated gas (air) causes products of combustion (2) to<br />
flow (draft) through the unit and rise up the flue. Room<br />
temperature air (3) enters through the barometric draft<br />
control (4) in the precise amount needed to overcome the<br />
excess drafts caused by temperature variations, wind<br />
fluctuations, and barometric pressure changes. Combustion<br />
of fuel is complete and the process is stabilized. The<br />
velocity of combustion gases through the heat exchanger is<br />
slowed so more heat is extracted. The unit operates more<br />
efficiently, reliably, and requires less maintenance.<br />
Performance Data<br />
Typical Gas Installation<br />
CONDENSING &<br />
CONVENTIONAL BOILERS<br />
Steel Flue Draft Regulators<br />
Suitable for Non-Condensing Boilers<br />
Product Code Model Control Size Inches<br />
F250DAJ10 10" M + MG2 10<br />
F300DAJ12 12" M + MG2 12<br />
F350DAJ14 14" M + MG2 14<br />
F400DAJ16 16" M + MG2 16<br />
F450DAJ18 18" M + MG2 18<br />
F500DAJ20 20" M + MG2 20<br />
F600DAJ24 24" M + MG2 24<br />
F700DAJ28 28" M + MG2 28<br />
F800DAJ32 32" M + MG2 32<br />
Stainless Steel Flue Draft Regulators<br />
Suitable for Condensing Boilers<br />
Product<br />
Code<br />
Dia. mm<br />
Setting<br />
Range<br />
Air flow rate at Δp<br />
5 Pa 20 Pa 40 Pa<br />
KWZ130 130 10 – 25 Pa 75 m³/h 130 m³/h 160 m³/h<br />
KWZ150 150 10 – 35 Pa 140 m³/h 220 m³/h 300 m³/h<br />
KWZ180 180 10 – 60 Pa 190 m³/h 275 m³/h 360 m³/h<br />
KWZ250 250 10 – 50 Pa 220 m³/h 380 m³/h 525 m³/h<br />
To be installed on Tee with single-wall female outlet<br />
149
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