17
Heatilator • HEIR36, HEIR42, HEIR50 Installation Manual • 2285-980 Rev. G • 12/14
C
J
B
D
B
F
B
A
E
V
V
V
V
V
V
M
H or i
V
G
X
V
H
A
V
V
H
B. Chimney Diagram
Figure 4.3 Minimum Clearances for Termination
O
N
P
R
Q
Electrical
Service
V
K
V
K
V
L
C
V
CLEARANCE = 6 IN.
X
= AIR SUPPLY INLET
A = 12 inches.................clearances above grade, veranda,
porch, deck or balcony
B =
12 inches.................clearance to window or door that may
be opened, or to permanently closed
window
C =
18 inches.................clearance below an unventilated/
ventilated sof
fi
t with non-vinyl siding
= 18 inches .................clearance below an unventilated/ven-
tilated sof
fi
t with vinyl siding. Requires
a vinyl protector kit (VPK-DV). HEIR50
is not approved for use with vinyl sid-
ing or vinyl sof
fi
ts.
= 42 inches .................clearance below a vinyl sof
fi
t with non-
vinyl siding. HEIR50 is not approved
for use with vinyl siding or vinyl sof
fi
ts.
= 42 inches .................clearance below a vinyl sof
fi
t with vinyl
siding. Requires a vinyl protector kit
(VPK-DV). HEIR50 is not approved
for use with vinyl siding or vinyl sof
fi
ts.
D
= 6 inches...................clearance to outside corner
E
= 6 inches...................clearance to inside corner
F
= 3 ft. (Canada) ..........not to be installed above a gas me-
ter/regulator assembly within 3 feet
horizontally from the center-line of the
regulator
G =
3
ft
...........................clearance to gas service regulator vent
outlet
H =
12 inches.................clearance to non-mechanical (unpow-
ered) air supply inlet, combustion air
inlet or direct-vent termination
i
= 3 ft. (U.S.A.)
6 ft. (Canada) ...........clearance to a mechanical (powered)
air supply inlet
All mechanical air intakes within 10 feet of a termination cap must
be a minimum of 3 feet below termination.
J =
7
ft.
.........................
On
public
property: clearance above
paved sidewalk or a paved driveway.
A vent shall not terminate directly above a sidewalk or paved
driveway which is located between two single family dwellings and
serves both dwellings.
V
= VENT TERMINAL
= AREA WHERE TERMINAL IS NOT PERMITTED
N = 6 inches ........non-vinyl sidewalls
12 inches ......vinyl sidewalls
O = 18 inches .......clearance below an unventilated/ventilated sof
fi
t
with non-vinyl siding
= 18 inches ......clearance below an unventilated/ventilated sof
fi
t
with vinyl siding. Requires a vinyl protec-
tor kit (VPK-DV).
= 42 inches ......clearance below a vinyl sof
fi
t with non-vinyl siding
= 42 inches ......clearance below a vinyl sof
fi
t with vinyl siding.
Requires a vinyl protector kit (VPK-DV).
P = 8 ft.
Q
MIN
R
MAX
1 cap
3 feet
2 x Q
ACTUAL
2 caps
6 feet
1 x Q
ACTUAL
3 caps
9 feet
2/3 x Q
ACTUAL
4 caps
12 feet
1/2 x Q
ACTUAL
Q
MIN
= # termination caps x 3 R
MAX
= (2 / # termination caps) x Q
ACTUAL
Covered Alcove Applications
(Spaces open only on one side and with an overhang)
Measure horizontal clearances from this surface.
Measure vertical clearances from this surface.
CAUTION! Risk of Burns!
Termination caps are HOT, con-
sider proximity to doors, traf
fi
c areas or where people may
pass
or gather (sidewalk, deck, patio, etc.)
. Listed cap shields avail-
able. Contact your dealer.
• Local codes or regulations may require different clearances.
• Vent system termination is
NOT
permitted in screened
porches.
• Vent system termination is permitted in porch areas with two
or more sides open.
• Hearth & Home Technologies assumes no responsibility for
the improper performance of the appliance when the venting
system does not meet these requirements.
• Vinyl protection kits are required for use with vinyl siding.
K
= 6 inches................. clearance from sides of electrical
service
L =
12
inches................
clearance above electrical service
Location of the vent termination must not interfere with access to the
electrical service.
HEIR50 is not approved for use with vinyl siding or vinyl sof
fi
ts.
M = 24 inches ....... clearance under veranda, porch, deck, balcony
or overhang
42 inches ..... vinyl or composite overhang
Permitted when veranda, porch, deck or balcony is fully open on a
minimum of 2 sides beneath the
fl
oor.
