Sime Planet Dewy 60 BFR Manuel De Montage, D'utilisation Et D'entretien page 11

of condensate. Reference the appliance
manufacturers' instructions regarding
installation of necessary condensate
drains.
5. Support and Restraint Spacing
(a) General Principles of Support Adequate
support for any piping system is a mat-
ter of great importance. In practice, sup-
port spacing is a function of pipe size,
operating temperatures, the location of
fittings and the mechanical properties
of the pipe material. To ensure satisfac-
tory operation of a thermoplastic piping
system, the location and type of hangers
should be carefully considered.
The principles of design for steel piping
systems are generally applicable to
thermoplastic piping systems, but with
some notable areas where special con-
sideration should be exercised.
1. In systems where large fluctuations in
temperature occur, allowance must
be made for expansion and contrac-
tion of the piping system.
Since changes in direction in the
system are usually sufficient to allow
expansion and contraction, hangers
must be placed so movement is not
restricted.
(See also Expansion-Contraction sec-
tion of this manual).
2. Changes in direction (e.g. 90° elbows)
should be supported as close as prac-
tical to the fitting to avoid introducing
excessive torsional stresses into the
system.
3. Supports to be used on System 636
pipe shall be suitable for use on pla-
stic pipe and shall not be tightly clam-
ped onto the pipe to allow for possible
expansion/contraction movement.
Pipe clamps or hangers shall not have
sharp edges or fulcrum points which
might damage the System 636 pipe
over time.
(b) System 636 PVC or CPVC systems
must be supported horizontally and ver-
tically at a maximum of every 5 feet (1.5
m). This maximum recommendation
should always be referenced against
local regulatory codes, the local autho-
rity having jurisdiction, as well as the
appliance manufacturer. The most
restrictive requirement shall apply. Do
not strap vertical vent pipe too tightly.
Strapping must support the vent
system while still permitting the vent to
move in the event of expansion and con-
traction.
(c) In order to adequately support the wei-
ght of vertical vent pipe, a pipe anchor or
support shall be installed at the first
floor penetration and then every 2 sto-
reys thereafter as required. Securely
fasten pipe anchors or supports to the
building structure. Pipe anchors or sup-
ports used for this purpose shall be sui-
table for use with plastic pipe. These
anchors or supports shall be snuggly
fastened to the vent in order to support
the weight of the vent, but shall not be
allowed to deform or damage the vent.
Anchors or supports supporting the
weight of the vertical vent shall be in
addition to the required pipe straps
which are intended only to maintain the
position of the vertical vent while
allowing for expansion and contraction.
Make certain that allowance for expan-
sion and contraction is provided in all
venting installations.
(d) System 636 venting shall be supported
with steel strapping or equivalent.
Strapping shall meet the following requi-
rements.
1/2" (13 mm) strapping - 22 gauge
steel
3/4" (19 mm) strapping - 28 gauge
steel
3/4" (19 mm) galvanized strapping - 28
gauge steel
Strapping shall be fixed to supporting
structure (e.g. floor joists or cross mem-
bers) using typical framing nails or
screws.
(e) System 636 pipe and fittings shall be
hung at least 25 mm (1") away from any
supporting structure to allow for free
movement due to expansion and con-
traction of the venting system. In certain
conditions greater clearance than 25
mm (1") may be required between
System 636 venting and supporting
structure. Always check the tables in
this instruction manual to ensure ade-
quate space is provided to accommoda-
te expansion and contraction.
6. Expansion and Contraction
(a) Being a thermoplastic product, System
636 has a notable capacity to expand
and contract under fluctuating tempera-
tures. Although the rates of expan-
sion/contraction are approximately
40% less than that of ABS, installers
must still be aware of this physical pro-
perty of System 636 and plan to accom-
modate it. Typical expansion vs. tempe-
rature change values can be found in
the following tables.
(b) To accommodate any expansion/con-
traction movement and stresses that
may occur, IPEX suggests giving consi-
deration to the following suggestions
during installation:
1. Leave adequate clearance between
any System 636 bends and walls or the
underside of floor boards or joists.
2. Use loose fitting clamps and hangers
to allow free pipe movement if required.
3. For long runs, consider using 2 hori-
zontal bends of the same angle to act as
an offset to absorb movement and
stresses (i.e. two 45's to replace one
90).
4. For critical areas such as near the
appliance outlet, two 45 bends may be
considered for use in lieu of one 90 bend
for more structural flexibility.
7. Firestops
Should System 636 pass through a fire
rated floor or wall, the penetration shall be
firestopped with a device or system listed
to ULC CAN4-S115 for an F and/or FT
Rating equivalent to the hour rating of the
floor or wall.
ENG
FR
11