Air For Combustion And Ventilation - Crown Boiler CWD060 Installation Instructions Manual

TABLE 4.2: CLEARANCES FROM VENT PIPING TO COMBUSTIBLE CONSTRUCTION
TYPE OF VENT PIPE
HEAT FAB SAF-T VENT
PROTECH FASNSEAL
PROTECH FASNSEAL W2
METAL-FAB CORR/GUARD
HEAT FAB SAF-T VENT
PROTECH FASNSEAL
Z-FLEX Z-VENT III
METAL-FAB CORR/GUARD
HEAT FAB SAF-T VENT
PROTECH FASNSEAL
Z-FLEX Z-VENT III
METAL-FAB CORR/GUARD
PROTECH FASNSEAL W2
HEAT FAB SAF-T VENT SC
"B" VENT CHASE USED AS PART OF
CROWN COAXIAL VENT SYSTEM*
* "B" Vent is used as a chase to carry combustion air in this system - never attempt to vent a CWD boiler using "B" vent
6) The boiler should be located so as to minimize the length of the vent system.
7) Do not install this boiler in a location where gasoline or other flammable vapors or liquids will be stored or used. Do
not install this boiler in an area where large amounts of airborne dust will be present, such as a workshop. When indoor
combustion air is used, do not install in a location where sources of hydrocarbons will be stored or used. Some common
sources of hydrocarbons include bleaches, fabric softeners, paints, cleaners, refrigerants, and cat boxes. Traces of these
substances can be drawn into the boiler causing severe corrosion damage to the boiler and /or objectionable odors.
• INSUFFICIENT COMBUSTION AIR SUPPLY MAY RESULT IN THE PRODUCTION AND
RELEASE OF DEADLY CARBON MONOXIDE (CO) INTO THE HOME WHCH CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
Sufficient fresh air must be supplied for both combustion and ventilation. In general, combustion air is obtained in one
of two ways:
• Direct Vent Installations – Combustion air is piped directly to the boiler inlet collar from the outdoors. This is also
sometimes called a "sealed combustion" installation.
• Direct Exhaust Installations – Combustion air is obtained from the boiler room. In some cases, openings or duct work
may be run from the outdoors to the boiler room, however the ducting is not connected directly to the boiler.
Air for ventilation is required to keep various boiler components from overheating and is always obtained from indoors.
To ensure an adequate combustion and ventilation air supply, perform the following steps:
PIPE DIRECTION
VERTICAL OR
HORIZONTAL
HORIZONTAL OR VERTICAL
WITH OFFSETS
VERTICAL WITH NO OFFSETS
VERTICAL OR HORIZONTAL
VERTICAL OR HORIZONTAL
VERTICAL
V Air for Combustion and Ventilation
WARNING
ENCLOSURE
AT LEAST ONE SIDE OPEN,
COMBUSTIBLE MATERIAL ON A
MAXIMUM OF THREE SIDES
ENCLOSED ON ALL FOUR SIDES
ENCLOSED ON ALL FOUR SIDES
ENCLOSED ON ALL FOUR SIDES
UNENCLOSED OR ENCLOSED ON
ALL SIDES
PER "B" VENT MANFACTUER'S
INSTRUCTIONS
6
6
MINIMUM CLEARANCE
TO COMBUSTIBLE
MATERIAL
1"
8"
6"
3"
0"
REFER TO "B" VENT
MANUFACTURER'S
INSTRUCTIONS