Model DP Oil-Fired Heater
Page 7
SECTION 3.
Venting
3.1 Combustion Air Supply
The heater location must provide sufficient air
supply for proper combustion and ventilation of the
surrounding area as outlined in the latest edition of
ANSI standard Z223.1 or in Canada, CAN/CGA-
B149.1 or .2, and any local codes that may be
applicable.
In general, these requirements specify that the
room in which a heater is installed should be provided
with two permanent air supply openings; one within 12
inches (305mm) of the ceiling, the other within 12
inches (305mm) of the floor. All indoor installations
must have openings to outside air for combustion,
ventilation, and dilution of flue gases from inside the
building (see Figure 5 and Table 2). Water Pik
Technologies does not recommend indoor installations
that do not provide combustion air from outside the
building.
All outdoor shelter installations (Canada only)
must have uninterrupted openings to outside air for
combustion and ventilation. The installation must be in
accordance with the latest edition of CAN/CGA B149.
Water Pik Technologies does not recommend outdoor
shelter installations that depend on internal air for
combustion. Combustion air should be ducted to the
heater from outside the structure.
Outside Air Supply:
When combustion air is
supplied directly through an outside wall, each opening
should have a minimum free area of one square inch
per 4,000 BTU/Hr (1.2kW) input of the total input
rating of all appliances in the enclosed area. If air is
provided through horizontal ducts, each opening and
duct must provide one square inch of flow area for
each 2000 BTU/Hr (0.6 kW).
The XL-3 model DP3000 has an input rating of
315,000 BTU/Hr. The vent opening requirements for
the XL-3 heater are summarized in Table 2. Note that
the areas specified are net free areas and should be
increased when the openings are covered by screens,
louvers, grills or other protective covers (see Figure 5
and Table 2 notes).
Note:
In Canada, follow Canadian Standard,
CAN/CGA-B149.1, .2 or local codes.
Figure 5. Combustion Air, Indoor Installation.
Table 2. Air Openings to Outside.
Required Net Free Open Area*
for Combustion Air Openings
Direct from outside
Duct from outside
Model
in
2
(cm
2
)
in
2
(cm
2
)
DP3000
79
(510)
158
(1020)
*Area indicated is for one of two openings; one at floor level
and one at the ceiling, so the total net free area would be double
the figures indicated. For special conditions, refer to NFPA54
ANSI Z223.1.
In Canada refer to the National Standard
CAN1-B149.1 or .2 which differs from this table.
Note: If using screens and/or metal louvers, compensate by adding
50% additional area to each opening
If using wood louvers each opening must be at least four times
the area indicated in the table above.
Exhaust Fans or Vents:
Any equipment which
exhausts air from the room where the heater is
installed can deplete the combustion air supply or
reverse the natural draft action of the venting system.
This could cause flue products to accumulate in the
room. Additional air must be supplied to compensate
for such exhaust.
The information in Table 2 is not applicable in
installations where exhaust fans or blowers of any type
are used. Such installations must be designed by
qualified engineers.
Содержание DP3000
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