Vent Termination Clearances - Superior DRT63STYN Installation And Operation Instructions Manual

INNOVATIVE HEARTH PRODUCTS • SEE-THROUGH POWER VENT DV GAS FIREPLACES (DRT63STYN) • INSTALLATION INSTRUCTIONS
VENT TERMINATION
CLEARANCES
These instructions should be used as a
guideline and do not supersede local codes
in any way. Install venting according to local
codes, these instructions, the current National
Fuel Gas Code (ANSI-Z223.1) in the USA or
the current standards of CAN/CSA-B149.1 in
Canada. When planning your vent run refer
to the table in Figure 22 on Page 19.
Horizontal Vent Termination Clearances
The horizontal vent termination must have
a minimum of 3" (76 mm) clearance to any
overhead combustible projection of 2-1/2" (64
mm) or less (see Figure 3). For projections
exceeding 2-1/2" (64 mm), see Figure 3. For
additional vent location restrictions refer to
Figure 4 on Page 9.
8
Combustible Projection
extending more than
2.5 inches
24 in (610 mm)
Power Vent Termination
Side Elevation View
Ventilated or Unventilated Soffit
Combustible
For recess allowances of power vent termination
into exterior walls, see Figure 24 on Page 21.
Figure 3: Horizontal Power Vent Termination Clearances to Combustibles
TERMINATION HEIGHTS FOR VENTS ABOVE
FLAT OR SLOPED ROOFS
Horizontal Overhang
2 FT
MIN.
2 FT MIN.
Lowest
Discharge
Vent Opening
Termination
H*
Storm Collar
Flashing
1 inch (25.4 mm) Minimum
Clearance to Combustibles
Concentric
*H = MINIMUM HEIGHT FROM ROOF TO
Vent Pipe
LOWEST DISCHARGE OPENING OF VENT
*H = minimum height from roof to lowest
discharge opening of vent.
Figure 3b: Vertical Vent Termination Clearances
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Combustible Projection
3 in
extending up to
(76 mm)
2.5 inches
18 in
(457 mm)
Vent/air intake termination clearances
above the high side of an angled roof
are listed in the table below.
Vertical
Termination Heights for Vents
Wall
Above Flat or Sloped Roofs
(Ref. NFPA 54 / ANSI Z223.1)
Roof Pitch
Flat to 6/12
6/12 to 7/12
X
12
7/12 to 8/12
Roof Pitch is X/12
8/12 to 9/12
9/12 to 10/12
10/12 to 11/12
11/12 to 12/12
12/12 to 14/12
14/12 to 16/12
16/12 to 18/12
18/12 to 20/12
20/12 to 21/12
*Feet *Meters
1.0 0.3
1.25 0.38
1.5 0.46
2.0 0.61
2.5 0.76
3.25 0.99
4.0 1.22
5.0 1.52
6.0 1.83
7.0 2.13
7.5 2.29
8.0 2.44