General Venting Information - Termination Location - Vermont Castings Radiance RADVTSCCB Installation And Operating Instructions Manual

Radiance Direct Vent Gas Heater
®

GENERAL VENTING INFORMATION - TERMINATION LOCATION

A = Clearance above grade, veranda, porch, deck
or balcony
B = Clearance to window or door that may be
opened
C = Clearance to permanently closed window
D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal distance
of 2' (610 mm) from the center line of the
terminal
E = Clearance to unventilated soffit
F = Clearance to outside corner
G = Clearance to inside corner
H = Clearance to each inside of center line
extended above meter/regulator assembly
I = Clearance to service regulator vent outlet
J = Clearance to non-mechanical air supply inlet
to building or the combustion air inlet to any
other appliance
K = Clearance to mechanical air supply inlet
L = Clearance above paved sidewalk or paved
driveway located on public property
M = Clearance under veranda, porch, deck or
balcony
N = Clearance above a roof shall extend a minimum of 24" (610mm) above the highest point when it passes through the roof
surface, and any other obstruction within a horizontal distance of 18" (450mm).
1 In accordance with the current CSA-B149 Installation Codes
2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel
Gas Codes
† A vent shall not terminate directly above a sidewalk or paved
driveway which is located between two single family dwellings and
serves both dwellings
 Only permitted if veranda, porch, deck or balcony is fully open on a
minimum 2 sides beneath the floor.
Fig. 11 Vent termination clearances.
20306759
D
E
L
C
B V
Fixed
Closed
F
V
B
CFM145a
VENT TERMINATION X
V
CANADIAN INSTALLATIONS
12" (30cm)
6" (15cm) for appliances <10,000 BTU/h (3kW)
12" (30cm) for appliances >10,000 BTU/h (3kW)
and <100,000 BTU/h (30kW)
36" (91cm) for appliances >100,000 BTU/h
(30kW)
12" (305mm) recommended to prevent window
condensation
18" (458mm)
12" (305mm)
see next page
see next page
3' (91cm) within a height of 15' (5m) above the
meter/regulator assembly
3' (91cm)
6" (15cm) for appliances <10,000 BTU/h (3kW)
12" (30cm) for appliances >10,000 BTU/h (3kW)
and <100,000 BTU/h (30kW)
36" (91cm) for appliances >100,000 BTU/h
(30kW)
6' (1.83m)
7' (2.13m)
†
12" (30cm)

INSIDE
CORNER DETAIL
G
V
A
B
B
V
V
Fixed
Operable
Closed
B
X
V
J
B
A
AREA WHERE TERMINAL IS NOT PERMITTED
AIR SUPPLY INLET
CFM145a
1
DV Termin Location
5/01/01 Rev. 12/05/01
sta
NOTE: 1. Local codes or regulations may require different
clearances.
2. The special venting system used on Direct Vent
Fireplaces are certified as part of the appliance, with
clearances tested and approved by the listing agency.
3. HHT assumes no responsibility for the improper
performance of the appliance when the venting system does
not meet these requirements.
PRE-INSTALLATION
N
H
M
I K X
V
US INSTALLATIONS
12" (30cm)
6" (15cm) for appliances <10,000 BTU/h (3kW)
9" (23cm) for appliances >10,000 BTU/h (3kW)
and <50,000 BTU/h (15kW)
12" (30cm) for appliances >50,000 BTU/h
(15kW)
12" (305mm) recommended to prevent window
condensation
18" (458mm)
12" (305mm)
see next page
see next page
3' (91cm) within a height of 15' (5m) above the
meter/regulator assembly
3' (91cm)
6" (15cm) for appliances <10,000 BTU/h (3kW)
9" (23cm) for appliances >10,000 BTU/h (3kW)
and <50,000 BTU/h (15kW)
12" (30cm) for appliances >50,000 BTU/h
(15kW)
3' (91cm) above if within 10' (3m) horizontally
7' (2.13m)
†
12" (30cm)

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