Install Instructions

89
IM-PR 566442 1114 (Design Manual)
Figure 4-3
Minimize penetration of expansion joints
INCORRECT
CORRECT
For compression connections with ViegaPEX Barrier, follow these steps. Note that FostaPEX cannot be
used when making compression connections.
1. Square off tubing to proper
length. Slide compressions nut
up tubing and clip brass ferrule
over tubing.
2. Slide tubing over end of SVC
adapter, pushing it on fully until
tubing is ush with shoulder of
tting.
3. Insert SVC adapter into the
seat of the manifold and tighten
the compression nut with a
wrench. Retighten nut slightly
after 30 minutes.
4.1.2 Handling and protecting tubing
• Use tubing cutters for even, square cuts. Use
a ratcheting cutter for FostaPEX.
• I f a bronze PEX press coupling will be
installed and encased in a thermal mass, it
must be completely covered with Viega’s
coupling repair tape.
• Cover tubing with a protection sleeve when it
is close to sharp objects.
• Protect tubing with proper guards where
nailing is likely.
• Use bend supports in concrete. A bend
support will help reduce possible damage to
the tubing due to the different expansion and
contraction rates of different materials.
• Minimize penetration of expansion joints in
concrete (Figure 4-1). Any tubing that passes
through concrete expansion joints must
be protected with a protection sleeve for a
minimum of 6" (15cm) on both sides of the
joint. Cross-sections of sleeving at expansion
joints are provided in Figure 4-3 and Figure 4-4.
4.1.2.1 Slab joint tube protection
(CSA B214, Clause 17.4.4.2)
The tubing at the location of a control,
expansion or construction joint in a concrete
slab shall be protected by
(a) a rigid sleeving material that covers the
tubing for at least 300 mm (12 in) on
either side of the joint;
or
(b) dipping the tubing below the slab.
Tubing installed below control joints in concrete
slabs shall be secured at points 150 mm (5 in)
on each side of the control joint.
30
30. ©CSA Group, B214-12. 2012. “Installation Code for Hydronic Heating Systems” Clause 17.4.4.2
Figure 4.2 SVC Compression Fittings
5
⁄
16
" to ¾"