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VENT TERMINATION CLEARANCES
These instructions should be used as a guide-
line and do not supersede local codes in any
way. Install vent according to local codes,
these instructions, the current National Fuel
Gas Code (ANSI-Z223.1) in the USA or the
current standards of CAN/CGA-B149.1 and -
B149.2 in Canada.
Vertical Vent Termination Clearances
Terminate single vent caps relative to building
components according to Figure 4 .
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
12
Flashing
Roof Pitch is X/12
1 inch (25.4 mm) Minimum
Clearance to Combustibles
Concentric
*H = MINIMUM HEIGHT FROM ROOF TO
Vent Pipe
LOWEST DISCHARGE OPENING OF VENT
R
o
f o
P
t i
h c
F
t a l
o t
/ 6
2 1
O
v
r e
/ 6
2 1
o t
/ 7
2 1
O
v
r e
/ 7
2 1
o t
/ 8
2 1
O
v
r e
/ 8
2 1
o t
/ 9
2 1
O
v
r e
/ 9
2 1
o t
1
/ 0
2 1
O
e v
1 r
/ 0
2 1
o t
1
/ 1
2 1
O
v
r e
1
/ 1
2 1
o t
1
/ 2
2 1
Figure 4
Terminate multiple vent terminations accord-
ing to the installation codes listed on this
page.
greater than
Ventilated
Soffit
18"
(457 mm)
Vertical
Wall
Figure 5 - Side Elevation View
Horizontal Vent Termination Clearances
X
The horizontal vent termination must have a
minimum of 3" (76 mm) clearance to any over-
head combustible projection of 2-1/2" (64 mm)
or less. See Figure 5. For projections exceed-
ing 2-1/2" (64 mm), see Figure 5 . All horizontal
terminations may be located as close as 6"
(152mm) to any (non-combustible and com-
H
bustible) exterior sidewall. This distance may
f (
e e
) t
be decreased to 2" (51mm) for non-combus-
1
0 .
tible exterior sidewalls only, if the SV4.5HT-2
termination is used. For additional vent location
. 1
5 2
restrictions refer to Figure 8 on page 7 .
1
5 .
2
0 .
TYPICAL INSTALLATION SEQUENCE
2
5 .
The typical sequence of installation follows,
. 3
5 2
however, each installation is unique resulting in
4
0 .
variations to those described.
See the page numbers references in the follow-
ing steps for detailed procedures.
Step 1.
(page 6)
framing. Position the appliance within the
framing and secure with nailing brackets.
Step 2. (page 6) Route gas supply line to
appliance location.
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Horizontal Vent Termination Clearances
Combustible Projection
2-1/2 inches or less in length
Combustible Projection
2-1/2
inches in length
Unventilated
Soffit
3"
(76 mm)
12"
(305 mm)
Termination Kit
Construct the appliance
All horizontal terminations
may be located as close
as 6" (152mm) to any
(non-combustible and
combustible) exterior
sidewall. This distance
may be decreased to
2" (51mm) for non-
combustible exterior
sidewalls only, if the
SV4.5HT-2 termination
is used.
Termination Kit
Step 3. (page 9) Install the vent system and
exterior termination.
Step 4. (page 22) Field Wiring
a. Millivolt Appliances – Install the operating
control switch (not factory provided) and
bring in electrical service line for forced air
circulating blower (optional equipment).
b. Electronic Appliances – Field wire and
install operating control switch.
Step 5. (page 22) Install blower kit (optional
equipment).
Step 6. (page 23) Make connection to gas
supply.
Step 7. (page 24) Install the logs, decora-
tive volcanic stone and glowing embers.
Step 8. (page 24) Checkout appliance op-
eration.
Step 9. (page 24) Install glass door frame
assembly.
Step 10. (page 25) Adjust burner to ensure
proper flame appearance.
Step 11. (page 25) Install the hoods.
5
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