Page 10
LAARS Heating Systems
of all equipment in the enclosure. When communicating to
the outdoors through horizontal ducts, each opening shall
have a minimum free area of not less than 1 square inch per
2000 Btu/hr (1100 square mm/kW) of total input rating of all
equipment in the enclosure.
Method 2
: One permanent opening, commencing within
12” (300mm) of the top of the enclosure, shall be permitted.
The opening shall directly communicate with the outdoors
or shall communicate through a vertical or horizontal duct
to the outdoors or spaces that directly communicate with the
outdoors and shall have a minimum free area of 1 square inch
per 3000 Btu/hr (734 square mm/kW) of the total input rating
of all equipment located in the enclosure. This opening must
not be less than the sum of the areas of all vent connectors in
the confined space.
Combustion Air From Room
In the United States, the most common requirements specify
that the space shall communicate with the outdoors in
accordance with method 1 or 2, which follow. Where ducts
are used, they shall be of the same cross-sectional area as the
free area of the openings to which they connect.
Method 1
: Two permanent openings, one commencing within
12” (300mm) of the top and one commencing within 12”
(300mm) of the bottom, of the enclosure shall be provided.
The openings shall communicate directly, or by ducts, with
the outdoors or spaces that freely communicate with the
outdoors. When directly communicating with the outdoors, or
when communicating to the outdoors through vertical ducts,
each opening shall have a minimum free area of 1 square inch
per 4000 Btu/hr (550 square mm/kW) of total input rating
INSTALLATION STANDARDS
MATERIAL
UNITED STATES
CANADA
ABS
ANSI/ASTM D1527
PVC, sch 40
ANSI/ASTM D1785 or D2665
Air pipe material must be chosen
CPVC, sch 40
ANSI/ASTM F441
based upon the intended application of the boiler.
Single wall galv. steel
26 gauge
PRO TECH (FasNSeal)
HEAT FAB (Saf-T-Vent)
Z FLEX (Z-Vent)
SIZE
Boiler
Flue
Intake Air
Boiler
Intermediate
Flue
Intake Air
Boiler
Flue
Intake Air
Adapter Termination
Termination Adapter Adapter Termination
Termination Adapter Termination
Termination
399-600
F303759
FSBS4
FSAIH04
KB285600 9454BUREZ-1* 9492 9414TERM 2SVSLA04 2SVSTP04 2SVSTEX0490
FSRC4(R.C)
303888
5400CI
2SVSRCX04
750-850
F303759 FSBS6 FSAIH04
303888
Figure 8.
Approved Stainless Terminations and Adapters
HORIZONTAL INTAKE AND EXHAUST PVC VENT TERMINAL KITS
Size
2” PVC
3” PVC
4” PVC
6” PVC
S
tand
ar
d
C
onc
ent
ric
C
A
006
00
0
Fl
us
h M
ou
nt
C
A
010
10
0
S
tand
ar
d
C
A
005
90
0
C
onc
ent
ric
239
-4
40
69
-01
Fl
us
h M
ou
nt
C
A
010
10
1
S
tand
ar
d
Fl
us
h M
ou
nt
C
A
010
10
2
S
tand
ar
d
80
incl.
opt.
opt.
opt.
opt.
opt.
n/a
n/a
n/a
105
incl.
opt.
opt.
opt.
opt.
opt.l
n/a
n/a
n/a
150
n/a
n/a
n/a
incl.
opt.
opt.
n/a
n/a
n/a
199/210
n/a
n/a
n/a
incl.
opt.
opt.
n/a
n/a
n/a
285
n/a
n/a
n/a
opt.
opt.
opt.
incl.
opt.
n/a
399
n/a
n/a
n/a
n/a
n/a
n/a
incl.
opt.
n/a
500
n/a
n/a
n/a
n/a
n/a
n/a
incl.
opt.
n/a
600
n/a
n/a
n/a
n/a
n/a
n/a
incl.
opt.
opt.
750
n/a
n/a
n/a
n/a
n/a
n/a
incl.
n/a
opt.
850
n/a
n/a
n/a
n/a
n/a
n/a
incl.
n/a
opt.
Concentric vent terminal = 10 ft. pipe length
HORIZONTAL INTAKE AND EXHAUST PVC VENT TERMINAL KITS
Size
2” PVC
3” PVC
4” PVC
6” PVC
S
tand
ar
d
C
onc
ent
ric
C
A
006
00
0
Fl
us
h M
ou
nt
C
A
010
10
0
S
tand
ar
d
C
A
005
90
0
C
onc
ent
ric
239
-4
40
69
-01
Fl
us
h M
ou
nt
C
A
010
10
1
S
tand
ar
d
Fl
us
h M
ou
nt
C
A
010
10
2
S
tand
ar
d
80
incl.
opt.
opt.
opt.
opt.
opt.
n/a
n/a
n/a
105
incl.
opt.
opt.
opt.
opt.
opt.l
n/a
n/a
n/a
150
n/a
n/a
n/a
incl.
opt.
opt.
n/a
n/a
n/a
199/210
n/a
n/a
n/a
incl.
opt.
opt.
n/a
n/a
n/a
285
n/a
n/a
n/a
opt.
opt.
opt.
incl.
opt.
n/a
399
n/a
n/a
n/a
n/a
n/a
n/a
incl.
opt.
n/a
500
n/a
n/a
n/a
n/a
n/a
n/a
incl.
opt.
n/a
600
n/a
n/a
n/a
n/a
n/a
n/a
incl.
opt.
opt.
750
n/a
n/a
n/a
n/a
n/a
n/a
incl.
n/a
opt.
850
n/a
n/a
n/a
n/a
n/a
n/a
incl.
n/a
opt.
Concentric vent terminal = 10 ft. pipe length
Table 6. PVC Vent Terminal Kits
Figure 9.
Required Combustion Air Pipe Material
Содержание NTV
Страница 4: ...LAARS Heating Systems...
Страница 11: ...Page 7 NEOTHERM Boilers and Water Heaters...
Страница 24: ...Page 20 LAARS Heating Systems Figure 16 Hydronic Piping Single Boiler Zoning with Circulators...
Страница 26: ...Page 22 LAARS Heating Systems Figure 18 Hydronic Piping Multiple Boilers Zoning with Circulators...
Страница 84: ...Page 80 LAARS Heating Systems Parts Illustration 1 Jacket Components...
Страница 86: ...Page 82 LAARS Heating Systems Parts Illustration 4 Internal Components Sizes 750 850...
Страница 88: ...Page 84 LAARS Heating Systems Parts Illustration 6 Gas Train Components Sizes 600 850...
Страница 89: ...Page 85 NEOTHERM Boilers and Water Heaters Parts Illustration 7 Heat Exchanger Components 68A Sizes 285...
Страница 90: ...Page 86 LAARS Heating Systems Parts Illustration 8 Electrical Components Front Battery CR2032 Touchscreen Back...
Страница 91: ...Page 87 NEOTHERM Boilers and Water Heaters Notes...
