Sime Planet Dewy 30 BF Manuel D'utilisation page 13

appliance in order to prevent collection
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, support spacing is a function
of pipe size, operating temperatures, the
location of fittings and the mechanical
properties of the pipe material. To ensu-
re satisfactory operation of a thermo-
plastic piping system, the location and
type of hangers should be carefully con-
sidered. The principles of design for
steel piping systems are generally appli-
cable to thermoplastic piping systems,
but with some notable areas where spe-
cial consideration 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 chan-
ges in direction in the system are
usually sufficient to allow expansion
and contraction, hangers must be pla-
ced 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 and CPVC systems
must be supported horizontally and ver-
tically at a maximum of every 5 feet (1.5
mt). 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 contraction.
(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 sup-
ports to the building structure.
Pipe anchors or supports used for this
purpose shall be suitable 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 con-
traction. Make certain that allowance
for expansion and contraction is provi-
ded 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 25mm (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
25mm (1") may be required between
System 636 venting and supporting
structure.
Always check the tables in this instruc-
tion manual to ensure adequate space is
provided to accommodate 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 of the wall.
ENG
FR
13