3. Fasten the two casing sections together using the stainless steel metal screws provided. Be sure to put a screw
in each pre-punched hole.
4. Cut off the exposed insulation. You do not need to remove any extra insulation in order to allow for overlap, the
insulation will compress sufficiently when assembled.
5. Slide the flue into the length below it and fasten the exterior together in the same manner as a conventional
chimney section. It may require somewhat more effort to connect the adjustable length since you are com-
pressing the insulation at the same time.
ANCHOR PLATE (AP)
Boiler Applications
The chimney may be supported directly on top of the appliance. This is achieved by attaching an Anchor Plate
(AP) directly to the outlet of the appliance.
The maximum height of chimney supported will be
determined by the allowable maximum load on the
boiler, but should generally not exceed 25 feet.
1. The support should be bolted to the appliance using
3/8" or larger bolts.
2. Place the first chimney length in the anchor plate.
Fasten it in place using one factory suplied stainless
steel screw through each anchor plate bracket into
the chimney casing.
Using an anchor plate to extend an existing masonry chimney.
The are two common applications for extending a masonry chimney with an RIS chimney - when the masonry
chimney is too short causing draft problems and when the masonry chimney is damaged as a result of age or
mechanical shock (earthquake).
1.
If the RIS chimney is being used to extend an existing chimney in good condition then the anchor plate may
be installed directly on to the existing chimney. It is often necessary to remove a portion of the top tile liner and
some of the masonry cap in order to achieve a structurally sound clean, flat surface. Alternatively a concrete
bond beam may be poured on top of the existing masonry in order to achieve a flat surface. In either case
read the section on masonry transitions carefully before installing the anchor plate (see page 10).
1A
.
If the RIS chimney is being used to extend a damaged chimney read the information on page 7 regarding
repairs of earthquake damaged chimneys carefully. There is no substitute for a thorough on site examination
of the existing chimney by a qualified contractor. The pamphlet "Repair Of Earthquake Damaged Masonry
Chimneys Using New Metal Chimneys" by the City of Los Angeles Department of Building and Safety provides
specific instructions on how to determine a suitable location to adapt from masonry to metal. This pamphlet
also recommends specific steel bracing which must be fastened to the roof to provide lateral support for the
existing masonry. See drawings of typical installations on page 9.
2.
Pour a concrete bond beam to provide a suitable surface to fasten the anchor plate and seal the top of the
existing masonry. Read the section on masonry transitions carefully before installing the a bond beam or
anchor plate (see page 10).
3. Apply silicone to the top surface of the masonry prior to bolting the anchor plate down.
4. Bolt the anchor plate to the top of the existing masonry using 3/8" or larger metal anchors solidly fastened into
the existing masonry.
5. Screw the first section of chimney to the anchor plate using one factory supplied stainless steel screw through
each pre-punched hole.
RIS Owner's Manual
ICC Chimney
8
