Openings For Combustion Air Supply And Venting - Buderus Logano GA124 Installation And Maintenance Instructions Manual

8

Openings for combustion air supply and venting

8 Openings for combustion air supply and venting
BOILER DAMAGE AND OPERATING
FAULTS
due to missing or inadequate openings for
CAUTION!
combustion air and venting of the boiler
room.
The openings for combustion air supply
and venting are always required
regardless of whether the combustion air
is supplied from the room (operation from
room air) or directly to the boiler through
ducts (operation independent of room air).
Inadequate venting of the boiler room may
result in excessive ambient temperatures.
This can damage the boiler.
Inadequate combustion air supply may
cause operating faults.
Make sure that inlets and outlets are
not reduced or closed and that they are
adequately sized.
If faults are not corrected immediately,
the boiler must not be operated.
Inform the system operator of the fault
and the danger.
To ensure an adequate combustion air supply and
venting of the heating system suitable measures must
be taken in accordance with the National Fuel Gas
Code, Section 5.3, Air for Combustion and Ventilation,
or the local codes.
In Canada the regulations in accordance with the
CSA/CGA–B 149.1 or 2 Installation Codes apply.
BOILER DAMAGE
due to contaminated combustion air.
Never use cleaning agents that contain
CAUTION!
chlorine and halogenated
hydrocarbons (e.g. spray bottles,
solvents and cleaning agents, paints,
glues).
Do not store or use these substances in
the boiler room.
Prevent excessive dust levels.
USER NOTE
If contamination of combustion air is
possible (e.g. installation near swimming
pools, dry cleaners or hair saloons),
operation with air outside the room is
recommended.
34 Installation and maintenance instructions Logano GA124 special gas-fired boiler • Issue 04/2005
FIRE DANGER
due to flammable materials or liquids.
Do not store flammable materials or
WARNING!
liquids in the immediate vicinity of the
heat generator.
Total air supply from inside the building
Make sure that the boiler room has two permanent
openings that are connected with one or more other
rooms. When calculating the cross-section areas of the
openings, the total combustion output of all gas-fired
appliances in the connected rooms must be taken into
account. Each opening must have a minimum cross-
section of one square inch per 1000 Btu/h of the total
combustion output of all gas-fired appliances inside the
connected rooms. Note that the minimum cross-section
of every opening must not be less than 100 square
inches. One opening must not be more than 12 inches
from the ceiling and the other must not be more than
12 inches from the floor of the boiler room, calculated
from the outer edge of the opening. The shortest
dimension of all inlet and outlet openings must not be
less than three inches.
We reserve the right to make any changes due to technical modifications.