Installation Guide

24
Installation Practices
the nearest edge of the wood structure (Figure 4.3). If this criterion can’t be met, the tubing
must be protected by a striker plate of suitable size
installed in accordance with Section 4.4 (p. 26).
The diameter of the hole should be no more than
1/3 the depth of the wood structure.
Holes and Cuts in Top and Sole Plates
Holes bored through top plates, top frame mem-
bers and sole plates should not exceed 50% of the
width of the structure, and should be in the center
of the structure. If a sole or plate is to be cut for the
routing of HOME-FLEX® tubing, the width of the
cut should be ½" greater than the outside diam-
eter of the tubing and no greater than 2 inches.
Tubing must be protected with striker plates in
accordance with Section 4.4. (Figure 4.4)
Routing through vertical wall framing
Requirements for boring through vertical mem-
bers of wall framing dier depending on whether
the member is bearing or not. For non-bearing
members (Figure 4.5), the size of the hole should
be no larger than 60% of the width of the mem-
ber. For bearing members, the size of such hole
should be no more than 40% of the member. (Fig-
ure 4.6)
Routing through metallic surfaces
When installing HOME-FLEX® through galvanized steel studs, plastic grommets (often sup-
plied by the stud manufacturer) should be used to reduce potential damage to the yellow
jacket of the HOME-FLEX® tubing. When installing through holes in other metallic members,
the tubing must be similarly protected from contact with the member to prevent mechani-
cal wear on the yellow jacket and tubing. Acceptable means of protection include: rubber
grommets, bushings, HOME-FLEX® Flexible Protective Conduit, PVC tape, thermal contraction
sleeve material, or a minimum of four wraps of 10 mil duct tape.
Concealed Locations for Fittings
The HOME-FLEX® mechanical attachment ttings have been tested and are listed per the
requirements of ANSI LC1 and CSA 6.26 Standard (USA and Canada). This specication pro-
Figure 4.3 Holes in Wood Structures
Preferred
location
D/3
Max
D/3
Max
D
2"
Min
2" Min
Figure 4.4 Holes and Cuts in Top and Sole Plates
2x4
2x4
Stud
Top Plate
Sole Plate
2” Max.
Cut Width
W
Hole for Tubing
W/2 Max
W/2
W/2
Figure 4.5 Holes in Non-Bearing Walls
2x4
Holes up to 60%
of Stud Width
Non-bearing Wall
2
1
⁄8"
Max
3
1
⁄2"
1
1
⁄2"
5
⁄8"
Max
Figure 4.6 Holes in Bearing Walls
2x4
Non-bearing Wall
Holes up to 40%
of Stud Width
1
3
⁄8"
Max
3
1
⁄2"
1
1
⁄2"
1"
Max