Check Openings For Combustion Air Supply And Venting - Buderus Logano US GC 144 II Installation And Service Instructions Manual

8

Check openings for combustion air supply and venting

▶ Open fill valve for additional filling.
▶ Set static system pressure to at least 15 psi at indicated on pressure
relief valve ( figure 15).
▶ Close fill valve and remove fill hose for fill valve.
1
EL
RK
Fig. 14 B-kit installation
[1] Pressure relief valve ¾"
1
2
Fig. 15 Pressure temperature gauge
[1] Pressure gauge
[2] Set pressure mark
12
VK
6 720 804 440-14.2T
6 720 804 440-15.1T
8 Check openings for combustion air supply
and venting
NOTICE: Boiler damage and operating faults due to
missing or inadequate openings for combustion air and
venting of the boiler room.
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 dimensioned.
▶ 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.
NOTICE: Boiler damage due to contaminated
combustion air.
▶ Never use cleaning agents that contain 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.
WARNING: Fire danger due to flammable materials or
liquids.
▶ Do not store flammable materials or 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.
Total air supply from outside the building
Make sure that the boiler room has two permanent openings, one of
which 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 openings have a
direct connection or a connection through ventilation ducts to the
outside or to rooms that have an unobstructed connection to the outside
Logano GC 144 II – 6 720 808 893 (2017/02)