Heatilator GDST5244I Owner's Manual page 21

D
E
V
L B
Measure vertical clearances
Measure horizontal clearances
Dimension Descriptions
A Clearance above the ground, a veranda, porch, deck or balcony - 12 in.
(0 cm) minimum. *
B Clearance to window or door that may be opened – 10,000 BTUs or less,
6 in. (15 cm) minimum; 10,000-50,000 BTUs, 9 in. (23 cm) minimum; over
50,000 BTUs, 12 in. (30 cm) minimum. *
C Clearance to permanently closed window – 12 in. (0 cm) minimum -
recommended to prevent condensation on window.
D Vertical clearance to ventilated soffit located above the termination within
a horizontal distance of 2 ft (60 cm) from the centerline of the termination
– 18 in. (46 cm) minimum. **
E Vertical clearance to unventilated soffit - 12 in. (30 cm) minimum. **
F Clearance to outside corner - 6 in. (15 cm) minimum.
G Clearance to inside corner - 6 in. (15 cm) minimum.
H Not to be installed above a meter/regulator assembly within  ft (90 cm)
horizontally* from the center line of the regulator (Canada only)
I Clearance to service regulator vent outlet –  ft (.91 m) U.S. minimum and
 ft (.91 m) Canada minimum. *
J Clearance to non-mechanical air supply inlet into building or the combustion
air inlet to any other appliance – 9" (23 cm) U.S. minimum and 12 in. (30
cm) Canada minimum. *
K Clearance to mechanical air supply inlet -  ft (.91 m) U.S. minimum and
6 ft (1.8 m) Canada minimum. *
L Clearance above a paved sidewalk or paved driveway located on public
property - 7 ft (2.1 m) minimum.
A vent may not terminate directly above a sidewalk or paved driveway
which is located between two single family dwellings and serves both
dwellings.
M Clearance under veranda, porch, deck or balcony - 12 in. (30 cm) minimum.
* Recommended 0 in. (76 cm) for vinyl or plastic.
Only permitted if veranda, porch, deck or balcony is fully open on a
minimum of 2 sides beneath the floor. *
N Vertical clearance between two horizontal termination caps – 12 in. (0
cm) minimum.
O Horizontal clearance between two horizontal termination caps – 12 in. (0
cm) minimum.
Figure 6.3 Minimum Clearances for Termination
CAUTION: IF EXTERIOR WALLS ARE FINISHED WITH VINYL SIDING, IT IS SUGGESTED THAT A VINYL PROTECTOR KIT BE INSTALLED.
C
Fixed
V
V
Closed
F V
B
B
V TERMINATION CAP
from this surface
from this surface.
Heatilator • GDST5244I • 4045-127 • Rev Z • 08/09
H
O
N
V
B V
Openable Fixed
Closed
B
V
J
X
A
GAS METER
X
AIR SUPPLY INLET
Q
P
V
R
T
S
Covered Alcove
Applications
P 6" - Non-vinyl sidewalls
12" – Vinyl sidewalls
Q 18" – Non-vinyl soffit and overhang
42" – Vinyl soffit and overhang
R 8 ft.
1 cap
2 caps
 caps
4 caps
S = # term caps x 3
min
U 6" min. – Clearance from sides of electrical service.
W 12" min. – Clearance above electrical service.
* As specified in CGA B149 Installation Codes
Note: Local codes or regulations may require different clearances.
** Clearance required to vinyl soffit material – 30 in. (76 cm) minimum.
Note: Location of the vent termination must not interfere with access to
the electrical service.
WARNING!
In the U.S.: Vent system termination is NOT permitted in screened porches.
You must follow side wall, overhang and ground clearances as stated in
the instructions.
In Canada: Vent system termination is NOT permitted in screened porches.
Vent system termination is permitted in porch areas with two or more sides
open. You must follow all side wall, overhang and ground clearances as
stated in the instructions.
Hearth & Home Technologies assumes no responsibility for the improper
performance of the appliance when the venting system does not meet
these requirements.
G
V
M
V
V K X
I
A
RESTRICTION ZONE
(TERMINATION NOT
ALLOWED)
V
W
U
Electrical
V
Service
D*
V
Clearances to Electrical Service
S
min
 ft
6 ft
9 ft
12 ft
T = (2/# term caps) x S (actual)
max
U
V
T
max
2 x S actual
1 x S actual
2/ x S actual
1/2 x S actual
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