15
15
‘H’
Horizontal
overhang
Vertical
wall
Termination
cap
Storm
collar
Roof
flashing
Plumber’s tape
fixed to wall strap
Wall strap
Ceiling
firestop
Ceiling
support
Offset elbows
Min.
18”
Overhang should
not extend beyond
vent if within 48” of
termination cap
Min. 24”
(unvented soffit)
Min. 36”
(vented soffit)
Joists
10”
(254 mm)
10”
(254 mm)
Vertical Termination Installations
All Co-axial Vent Installations
• The 530 heater may be installed using components from
a variety of manufacturers listed on pages 36–37.
• Allowable vent con
fi
gurations and clearances for the
530 heater are listed in this manual and apply for all
vent components listed on pages 36–37. For details of
component installation, follow instructions packaged
with each component.
• The 530 heater is supplied with a smooth 4 by
6-5/8-inch co-axial collar. All vertical termination
applications will require an 817VAK Vent Adapter
to convert the collar to a twist-lock type. All other
manufacturers’ components listed have designed their
components to
fi
t the twist-lock type collar.
• Do not mix components from different manufacturers.
• Do not cut pipe lengths. Use adjustable lengths. Check
the roof pitch to determine which roof
fl
ashing will be
needed.
• The minimum clearances to combustible materials all
round the vent pipes must be in accordance with the
dimensions shown previously in this manual.
1. If using rear vent connection to the appliance,
fi
t a 90
degrees elbow to the appliance vent adapter.
2. Place the appliance in its proper location.
3. Drop a plumb from the ceiling to the center of the
appliance vent opening. Mark the position on the ceiling.
Drill a small hole at the marked position.
4. Determine the position where the vent will pass
through the roof. If directly above the position where it
penetrates the ceiling, drop a plumb from the roof to the
small hole in the ceiling and mark the roof at this spot.
If rafters or other obstructions will prevent a vertical exit
or if clear attic space is desired, the roof outlet can be
offset using elbows. Drill a small hole at the marked
position.
5. A ceiling
fi
restop must be installed at the second
fl
oor and higher
fl
oors. A ceiling
support should be used below the
fl
at ceiling. To install the
fi
restop and support,
cut and frame a 10-inch (254 mm) square hole centered on the small hole
previously drilled.
6. Fit vent accessory elbows and pipe lengths as required up through ceiling support
boxes and
fi
restops. If installation includes offset, support the offsetting pipes
every 3 feet (0.9 m) with wall straps.
7. Cut a hole in the roof centered on the small hole. The hole must allow for the
minimum clearances to combustible materials
8. Fit pipe lengths through the roof. Fit roof
fl
ashing securing it with roo
fi
ng nails.
9. Fit storm collar and termination cap.
10. FS installations. Secure the appliance to the
fl
oor or wall if necessary.
Roof Pitch
Minimum
‘H’ (feet)
Flat to 7/12
1’
Over 7/12 to 8/12
1.5’
Over 8/12 to 9/12
2’
Over 9/12 to 10/12
2.5’
Over 10/12 to 11/12
3.25’
Over 11/12 to 12/12
4’
Over 12/12 to 14/12
5’
Ceiling support
See venting accessories list on pages 36–37 for allowable components.
