21
20
Termination Installation
• Exhaust and combustion air piping must be securely fastened
to structure every four (4) feet (1.2 m), to ensure dimensions
shown in Figures throughout this document are maintained.
• DO NOT strap vertical vent too tightly as the strapping must per-
mit the vent to move in the event of expansion and contraction.
• Straps are field supplied. Use straps, clamps, or equivalent that
will not score or damage the pipe. Expansion and contraction
should be addressed between appliance and termination point.
• All penetrations must be sealed according to local building
codes. Caulking for side wall terminations and flashing for roof
penetrations are typical. Use only PVC/CPVC compatible sealing
material, contact PVC/CPVC manufacturer for a complete list.
IPEX Concentric Vent Kit (CVK) Installation
• For installations with multiple terminations, maintain appropri-
ate clearances between terminals. (
see Figures 21a and 21b
).
• The pipe length of the concentric vent kit can be shortened; pro-
viding that the cutting and cementing procedures adhere to the
System 636 guidelines; reference IPEX installation instructions
and
Figure 18
for further information.
• Pipe lengths and/or fittings CANNOT be added to the socket of
the rain cap in order to divert the exhaust gas.
DANGER
WARNING
CAUTION
AVERTISSEMENT
ATTENTION
Moisture in the flue gas will condense as it leaves the vent ter-
minal. In cold weather this condensate can freeze on the exte-
rior wall, under the eaves, and on surrounding objects. Some
discoloration to the exterior of the building is to be expected.
However, improper location or installation can result in severe
damage to the structure or exterior finish of the building.
DANGER
WARNING
CAUTION
AVERTISSEMENT
ATTENTION
Danger of fire or bodily injury – Solvent cements and primers
are highly flammable. Provide adequate ventilation and do not
assemble near heat source or open flame. Do not smoke. Avoid
skin or eye contact. Observe all cautions and warnings on ma-
terial containers.
TWIN PIPE VENTING GUIDE
Figure 18: Twin Pipe to Concentric Termination Physical Data
Termination Kits Include:
Nominal Pipe Size (Dimension in Inches)
Item#
Concentric Kit A
B*
C+
D
E
F
G
196006
3” x 20” PVC
36.1 (91.7 cm) 20 (50.8 cm)
4.5 (11.4 cm)
3 (7.6 cm)
3 (7.6 cm)
8.75 (22.2 cm) 2.25 (5.7 cm)
196021
4” x 36” PVC
56 (142 cm)
37.3 (94.7 cm) 6.62 (16.8 cm) 4 (10.2 cm) 4 (10.2 cm) 10 (25.4 cm)
3.5 (8.9 cm)
197009
3” x 20” CPVC
36.1 (91.7 cm) 20 (50.8 cm)
4.5 (11.4 cm)
3 (7.6 cm)
3 (7.6 cm)
8.75 (22.2 cm) 2.25 (5.7 cm)
197021
4” x 36” CPVC
56 (142 cm)
37.3 (94.7 cm) 6.62 (16.8 cm) 4 (10.2 cm) 4 (10.2 cm) 10 (25.4 cm)
3.5 (8.9 cm)
1. Wye - (Concentric)
2. Rain Cap
3. Exhaust Vent Pipe (Inner)
4. Fresh Air Intake Pipe (Outer)
5. Stainless Steel Screw & Nut
B* Dimension may be shortened to a minimum of twelve (12) inches (30.5 cm). Inner pipe (item 3)
must remain “F” inches longer than the outer pipe (item 4). Cut pipe ends square and solvent cement as
outlined in the System 636 installation manual.
C+ Installation cutout shoud be at least 1/2’’ (12.7 mm) larger than dimension “C”.
Lengthening the units is not permitted.
Table 15 : System 636 Concentric Vent Kits