8
EMP
Installation & Service Manual
109529-03 - 11/19
NOTICE:
Clearance to venting is for single wall
vent pipe. If Type L vent is used, clearance may
be reduced to the minimum required by the vent
pipe manufacturer.
C .
PROVIDE COMBUSTION AND VENTILATION
AIR .
Local and National Codes may apply and
should be referenced.
WARNING
Adequate combustion and ventilation air must
be provided to assure proper combustion and
to maintain safe ambient air temperatures.
Do not install boiler where gasoline or other
flammable vapors or liquids, or sources of
hydrocarbons (i.e. bleaches, fabric softeners,
etc.) are used or stored.
1. Determine volume of space (boiler room).
Rooms communicating directly with the
space in which the appliances are installed,
through openings not furnished with doors, are
considered a part of the space.
Volume(ft
3
) = Length(ft) x Width(ft) x Height(ft)
2. Determine total input of all appliances in the
space.
Add inputs of all appliances in the space and
round the result to the nearest 1000 BTU per
hour.
3. Determine type of space. Divide Volume by
total input of all appliances in space. If the
result is greater than or equal to 50 ft
3
/1000
BTU per hour, then it is considered an
unconfined space
. If the result is less than
50 ft
3
/1000 BTU per hour then the space is
considered a
confined space
.
4. For boiler located in an
unconfined space of a
conventionally constructed building
, the fresh
air infiltration through cracks around windows
and doors normally provides adequate air for
combustion and ventilation.
5. For boiler located in a confined space or an
unconfined space in a building of
unusually
tight construction
, provide outdoor air.
a. Outdoor air for combustion may be
provided with an optional Fresh Air
Accessory Kit (
ONLY AVAILABLE WITH
BECKETT BURNER
).Plastic cover
applications, P/N 102119-01. Refer to Fresh
Air Accessory Kit instructions for installation
and air intake piping details.
or
b. Outdoor air may be provided with the
use of two permanent openings which
communicate directly or by duct with the
outdoors or spaces (crawl or attic) freely
communicating with the outdoors. Locate
remaining opening within 12 inches of
bottom of space. Minimum dimension of air
opening is 3 inches. Size each opening per
following:
Figure 2B: Direct Vent - Minimum Installation Clearances To Combustible Materials (Inches)
1
Pre-Installation
(continued)
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