7
Notes
: Thermal resistance values for typical chimneys
are as follows:
R2 (2 ft
2
•
hr
•°
F / Btu):
clay-lined masonry, A-vent
R3 (3 ft
2
•
hr
•°
F / Btu):
metal liner in clay-lined
Masonry
R6 (6 ft
2
•
hr
•°
F / Btu): metal or clay-lined masonry
with R4.5 (4.5 ft
2
•
hr
•°
F / Btu)
insulation between liner and
masonry (e.g. 2 in. of
expanded mica or 1 3/8 in. of
high density glass fibreboard.)
Applying the Table:
If a furnace with 0.60 USGPH nozzle is to be connected
to a 20 ft. tall clay-lined masonry chimney, the thermal
resistance of this chimney type 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:
The minimum size permitted shall be 4 in. inside
diameter.
The maximum size permitted shall be 5 in. inside
diameter.
The minimum base temperature shall be about 320ºF.
TABLE # 2
Total input rating of all
connected appliances
Flue inside diameter
(in)
Minimum base temperature (ºF)
for chimney height (ft) of :
kW
kBtu/h
USGPH
Min.
Max.
11
20
28
36
21
70
0.50
3
5
300
400
535
725
27
91
0.65
3
5
275
340
430
535
31
105
0.75
4
5
260
320
380
475
36
119
0.85
4
5
250
300
355
430
41
140
1.00
4
6
225
300
365
430
51
175
1.25
4
6
240
275
320
365
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 ventor 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 of the DV-2000™ venting system will not
function.
The notable characteristics of the DV-2000™ system
are as follows:
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 (6”) is required to be cut in the
side-wall, and the terminal is designed to fit through a
minimum 2 X 8-joist space.
The standard terminal is designed for a wall thickness
up to 14”, and the deep wall terminal for wall thickness
up to 25”.
Incorporates a vent blockage safety shutdown system.
If the vent or intake opening ever becomes partially or
fully blocked, the burner will shut down before a #1
smoke occurs
.
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” PVC
or ABS intake piping.
Vent terminal kits – DV-2000™:
The certified standard vent terminal kit is Model No.
VTK-1 or VTK-2, and is suitable for installation in walls
up to 14” thick. An alternate kit, Model VTK-1-DW or
VTK-2-DW is available to accommodate walls up to 25”
thick. Both kits contain the following items to complete
the hook-up to the
venting and furnace:
1
Terminal
2
Sealing Clamps
1
Side-wall Venting Breech Plate
2
Sealing Strips
1
Inner Wall Plate
1
Pressure Control with Tubing
2
Insulated Quick-connect Terminals
Содержание OLR Series
Страница 29: ...DNS 0571 Rev B DNS 0573 Rev B 30 FIGURE 5 1 Model OLR105A12B FIGURE 5 2 Model OLR160B20B...
Страница 30: ...31 FIGURE 5 3 Model OUF105A12B FIGURE 5 4 Model OUF160B18 DNS 0568 Rev C DNS 0572 Rev C...
Страница 31: ...FIGURE 5 5 Model OLF105A12B DNS 0570 Rev B FIGURE 5 6 Model NOUF105A12B 32 DNS 0674 Rev C...
Страница 32: ...33 FIGURE 5 7 Model NOUF160B18B FIGURE 5 8 Model NOLF105A12B DNS 0676 Rev C DNS 0675 Rev D...
