25
60T - 280T
COSMOGAS
Figure 5-2 Example of ventilation with methane
gas appliance
Figure 5-3 Example of ventilation with LP gas
appliance
CENTRAL
HEATING UNIT
VENTILATION
OPENING
METHANE
GAS
APPLIANCE
5.1.1 Requirements for proper ventilation
The utility room MUST have a properly sized ventilation opening.
To ensure proper ventilation for combustion in compliance with
the national and local standards in force, abide by the following:
At least one direct opening to the outside is required for
combustion, which must have a minimum area of 3000 cm
2
of
5000 cm
2
if the appliance runs on LP gas. Said opening must
be positioned less than 30 cm from the ceiling if the appliance
runs on METHANE gas (see fig 5-2) or along the floor if it runs
on LP gas (see fig 5-3).
The openings must communicate directly with the outside. The
requisites described above refer to one appliance; in rooms
where there are several appliances, greater free floor space is
required to provide adequate ventilation for the combustion of
all the appliances.
ATTENTION !!! In no case must the central
heating unit be in a negative pressure state. Therefore,
consider the presence of any discharge fans, ceiling fans,
dryers, compressors, air heating units, etc. that can take
air away from the appliance.
ATTENTION !!!
EXTRACTORS: Extractors or
similar devices to discharge air from the central heating
unit can decrease the ventilation required for combustion
and/or cause vacuums in the ventilation system. Flue
exhaust leaks from the ventilation system in an inhabited
room can cause very dangerous conditions that must be
corrected immediately.
5.1.2 - Preventing combustion air
contamination
Do not position air intake and/or flue exhaust outlets in rooms
where combustion air can be contaminated.
ATTENTION !!! Contaminated combustion air
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;
CENTRAL
HEATING UNIT
VENTILATION
OPENING
LP
GAS
APPLIANCE
5 - INSTALLATION - Installation site