25
Figure 5-2 Example of ventilation
Figure 5-3 Example of ventilation
5.1.1 Requirements for proper ventilation
The plant room MUST have a properly sized ventilation openings.
To ensure proper ventilation for combustion, high and low level
ventilation shall be installed. Where the appliance is installed
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to outside andthe free area of openings shall be as detailed in
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Room sealed appliances (type C) should be provided with
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Low level ventilation shall be provided as low as practicable and
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Further guidance on ventilation provision including the use
of mechanical ventilation systems can be found within IGEM/
UP/10 Edition 4.
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The ventilation system shall be
designed to ensure the plant room is not under suction
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appliance.
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Extractors or similar devices to
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conditions that must be corrected immediately.
5.1.2 - Preventing combustion air
contamination
Do not position air intakes in locations where combustion air
can be contaminated.
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can damage the appliance.
Make sure the combustion air does not contain any of the
following contaminating agents.
Products that can contaminate combustion air:
- Permanent wave solutions;
- Chlorinated waxes/cleaning products;
- Chlorine-based pool chemical products;
- Calcium chloride used for defrosting;
- Sodium chloride used to soften water;
- Coolant leaks;
- Solutions to remove paint or varnish;
- Hydrochloric acid/muratic acid;
- Cements and adhesives;
- Antistatic softeners used in dryers;
- Chloro-type bleaches, detergents and cleaning solvents
found in laundry rooms for home use;
- Adhesives used to secure construction products and other
similar products;
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level.
NOTE 2: At least 20% of low-level ventilation allowance to be below 1000 mm
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NOTE 3: At least 20% of high-level ventilation allowance to be above 85% of
maximum room height.
NOTE 4: Operation <50% of time = 2cm
2
/kW (total net input);
Operation 50 - 75% of time = 3 cm
2
/kW (total net input);
Operation >75% of time = 4 cm
2
/kW (total net input).
NOTE 5: Operation <50% of time = 4 cm
2
/kW (total net input);
Operation 50 - 75% of time = 5 cm
2
/kW (total net input);
Operation >75% of time = 6 cm
2
/kW (total net input).
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level.
NOTE 2: At least 20% of low-level ventilation allowance to be below 1000 mm
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NOTE 3: At least 20% of high-level ventilation allowance to be above 85% of
maximum room height.
NOTE 4: Operation <50% of time = 2cm
2
/kW (total net input);
Operation 50 - 75% of time = 3 cm
2
/kW (total net input);
Operation >75% of time = 4 cm
2
/kW (total net input).