FOCUS ST Owner's Manual
14
RSF Woodburning Fireplaces
1. Cut and frame the required holes in the floor(s), ceiling(s) and roof where the chimney will pass through. The
rough opening in the framing is 14" square (the opening can be slightly larger, but NEVER smaller).
2. From below, install a radiation shield in each floor
through which the chimney passes. At the attic
level, install a radiation shield and a storm collar
as shown in Figure 8.
❖
WARNING: A RADIATION SHIELD MUST BE
INSTALLED UNDER EACH FLOOR WHERE
THE CHIMNEY PASSES THROUGH.
3. Place the first chimney length on the fireplace.
Secure the chimney length to the fireplace with the
three screws provided.
The chimney must extend at least 3' above its
point of contact with the roof and at least 2' higher
than any wall, roof, or building within 10' of it. If the
chimney is higher than 5' above the roof, it must
be secured using a roof brace.
4. Put the roof flashing into place.
If the chimney is enclosed to the roof:
•
In
USA
: use a vented flashing;
•
In
Canada
: use a vented flashing, or a roof
radiation shield with a regular flashing.
Seal the joint between the roof and the flashing
with roofing tar or an exterior sealant. For sloping
roofs, place the flashing under the upper shingles
and on top of the lower shingles. Secure the
flashing to the roof using roofing nails or roofing
screws.
❖
WARNING: DO NOT BLOCK ANY OF THE OPENINGS IN THE VENTED FLASHING WITH SEALANT,
CAULKING OR ANY OTHER MATERIALS.
5. Place the storm collar over the chimney and flashing. Place a bead of clear or grey exterior sealant around the
chimney below the storm collar, pull the storm collar through the sealant and seal it once again on the top with
the exterior sealant (
DO NOT use roofing tar
).
6. Fit the rain cap on the chimney. Secure it tightly in place with the screws provided.
OFFSET CHIMNEY
An elbow may be installed directly on top of the fireplace if required. See the detailed offset charts in the EXCEL
chimney installation manual. Use the offset option if you need to clear a joist or pass around a cupboard. See Figure
9 and Figure 10 for examples.
•
Maximum offset angle:
•
In
USA
: 30°
•
In
Canada
: 45°
•
Maximum number of elbows: four, resulting in two offsets and returns.
Install the fireplace and chimney as described earlier. When you require an elbow, proceed as follows:
1. Install the required elbow. Turn it in the desired direction, and fasten it to the chimney length with 3 metal screws
provided at the joints.
2. Install enough lengths to obtain the desired offset. Secure each joint with 3 metal screws. Refer to the offset
charts provided with the EXCEL chimney installation manual for exact offset dimensions.
3. Use another elbow to return the chimney to the vertical direction.
* Refer to the text to determine the appropriate flashing
Figure 8 General Chimney Installation
