ICP ODH53F100LB-3MC Guide D'installation page 31

Without barometric damper
Due to the lack of dilution air that would ordinarily be drawn into the
barometric damper, the dew point of the flue gases is raised. To offset
the increased tendency for vent condensation, the chimney must be
lined. The liner must be insulated according to the insulating
procedure recommended by the manufacturer of the liner. Also, the
vent connector should be as short as possible and either be of double
wall construction or of single wall construction with 25.4 mm (1") of
insulation.
WARNING
Poisonous carbon monoxide gas hazard.
Never install a hand operated damper in the vent
pipe. However, any Underwriters Laboratories listed
electrically operated automatic type vent damper
may be installed if desired. Be sure to follow
instructions provided with vent damper. Read and
follow all instructions in this section.
Failure to properly vent this furnace or other
appliances can result in personal injury and/or
death, property damage.
CAUTION
When the furnace (chimney installation) is vented
together with other combustion appliances such as a
water heater, the allowable venting materials (L-Vent,
etc.) for use with those appliances must be investigated.
Flue pipe sizing
The following table is an excerpt from the Installation Code and
indicates the permitted flue sizes and minimum base temperatures for
circular flues in chimneys with thermal resistance of less than R6 (6 ft
•hr •°F / Btu). Where a new appliance, burner, or chimney is installed,
chimney vent sizes and maximum flue gas temperatures (measured at
the chimney connector with the barometric damper shut, after 5
minutes of operation) shall comply with Table 2.
Note: Thermal resistance values for typical chimneys
are as follows:
Total input rating of all
connected appliances
kW Btu/h USGPH
21 70,000 0.50
27 91,000 0.65
31 105,000 0.75
36 119,000 0.85
41 140,000 1.00
51 175,000 1.25
6
2
TABLE 2
Flue inside diameter
Min. Max.
76.2 mm (3") 0.13 m (5")
76.2 mm (3") 0.13 m (5")
0.1 m (4") 0.13 m (5")
0.1 m (4") 0.13 m (5")
0.1 m (4") 0.15 m (6")
0.1 m (4") 0.15 m (6")
445 01 4024 03
•hr •°F / Btu):
2
R2 (2 ft Clay-lined masonry, A-vent
2 •hr •°F / Btu):
R3 (3 ft Metal liner in clay-lined Masonry
•hr •°F / Btu):
2
R6 (6 ft Metal or clay-lined masonry with R4.5 (4.5
2
ft
and masonry (e.g. 2" of expanded mica or 1
3/8" of high density glass fibreboard.)
Applying Table 2
If a furnace with a 0.60 USGPH nozzle is to be connected to a 20 foot
tall clay-lined masonry chimney, the thermal resistance of this type of
chimney is R2, (which is less than R6). The actual firing rate at 156
psig is 1.25 x .60 = .75. Therefore this table shall apply as follows:
The minimum size permitted shall be 101.6 mm (4") inside diameter;
The maximum size permitted shall be 127.0 mm (5") inside diameter;
The minimum base temperature shall be about 160°C (320°F).
1.4.3) Side-wall venting - DV-2000™
Direct Vent System
The furnace can be side-wall vented without the use of a side-wall
power vent, using the new DV-2000™ venting system with the high
static pressure Beckett AFII and Riello 40-BF oil burners. Outdoor
combustion air must be directly connected to the burner or the
DV-2000™ venting system will not function.
The notable characteristics of the DV-2000™ system are as follows:
a) Certified to use the following materials for ducting the intake air
from the terminal to the burner: Schedule 40 PVC DWV,
Schedule 40 ABS DWV, and ASTM 2729 sewer Pipe;
One hole of minimal size (152.4 mm
b)
into the side-wall, and the terminal is designed to fit through a
minimum 2 X 8 joist space;
Incorporates a vent blockage safety shutdown system. If the vent
c)
or intake opening ever becomes partially or fully blocked, the
burner will shut down before a #1 smoke condition occurs;
d) The intake and vent circuits within the terminal can be accessed
for cleaning.
There are 3 main components to the DV-2000™ system: the VTK vent
terminal kit, the IFV insulated flexible venting material and the
field-supplied 3 inch PVC or ABS intake piping.
Minimum base temperature
for chimney height of:
11' 20'
149°C / 300°F 204°C / 400°F
135°C / 275°F 171°C / 340°F
127°C / 260°F 160°C / 320°F
121°C / 250°F 149°C / 300°F
107°C / 225°F 149°C / 300°F
116°C / 240°F 135°C / 275°F
• hr •°F / Btu) insulation between liner
ø ø
/ 6" ) is required to be cut
28'
279°C / 535°F 385°C / 725°F
221°C / 430°F 279°C / 535°F
193°C / 380°F 246°C / 475°F
179°C / 355°F 221°C / 430°F
185°C / 365°F 221°C / 430°F
160°C / 320°F 185°C / 365°F
36'