Heatilator CNXT4236IT Owner's Manual page 13

D
E
V
L B
Measure vertical clearances
from this surface
Measure horizontal clearances
from this surface.
Dimension Descriptions
A Clearance above the ground, a veranda, porch, deck or balcony - 12
in. (30 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. (30 cm) minimum
- recommended to prevent condensation on window.
D Vertical clearance to ventilated soffi t 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 soffi t - 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 3 ft (90
cm) horizontally* from the center line of the regulator (Canada only)
I Clearance to service regulator vent outlet – 3 ft (.91 m) U.S. minimum
and 3 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 - 3 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 30 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 fl oor. *
N Vertical clearance between two horizontal termination caps – 12 in. (30
cm) minimum.
O Horizontal clearance between two horizontal termination caps – 12 in.
(30 cm) minimum.
Figure 4.4 Minimum Clearances for Terminations
C
Fixed Fixed
V
V
Openable Fixed Openable Fixed
Closed Closed
Closed Closed
F V
V
J
B
B
A
V TERMINATION CAP TERMINATION CAP
T
Alcove Clearances
Heatilator • Caliber CNXT Series • 4047-132 Rev P • 11/07
H
O
N
V
B V
B
X
M
I
GAS METER GAS METER
X AIR SUPPLY INLET AIR SUPPLY INLET RESTRICTION ZONE RESTRICTION ZONE
(TERMINATION NOT (TERMINATION NOT
ALLOWED) ALLOWED)
Q
P
V
R
S
P 6" - Non-vinyl sidewalls
12" – Vinyl sidewalls
Q 18" – Non-vinyl soffi t and overhang
42" – Vinyl soffi t and overhang
R 8 ft.
1 cap
2 caps
3 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 specifi ed in CGA B149 Installation Codes
Note: Local codes or regulations may require different clearances.
** Clearance required to vinyl soffi t 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
V
V
K X
A
V
W
U
U
Electrical
V V
Service
D*
V
Clearances to Electrical Service
S T
min max
3 ft 2 x S actual
6 ft 1 x S actual
9 ft 2/3 x S actual
12 ft 1/2 x S actual
T = (2/# term caps) x S (actual)
max
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