Installing The Tubing - NuTone VX1000C Installation Instructions Manual

INSTALLING THE TUBING

Use the following installation guidelines when installing tubing.
1. Start tubing installation at farthest inlet and work toward
the power unit.
2. Tubing run to the power unit should be as straight as
possible.
3. When assembling sections with elbows and tees, make
sure the curve in the fitting is aligned so that the air flows
toward the power unit.
4. Branch lines should always join the trunk line from above
or from the same level. Never join a branch line from an
angle below the trunk line.
5. Refer to Figure 25 on page 9. Run low voltage wiring
(Model 376UL) and secure wiring to tubing as tubing is
installed. Model CF380 Pipe Support can be used to
support long runs of tubing (position near joists) and to
clip wire along tubing. Secure tubing to joists or studs.
Leave approximately 6" of wire for connection to each
inlet.
6. Cut a 2 ½" diameter hole in sole plate, header or stud
directly in line with opening of inlet bracket fitting.
NOTE: See Figure 13 for center line dimensions.
7. Refer to Figure 14. Measure length of tubing needed to
connect inlet to trunk line. Allow approximately 3⁄4" of
tubing for inserting into fittings.
8. Refer to Figure 15. Cut tubing, keeping cut square.
9. Refer to Figure 16. Remove burrs from both inside and
outside of tubing.
10. Before cementing, pre-assemble section to inlet
fitting, check for proper length.
11. Refer to Figure 17. Apply PVC cement (Model 379) to
outside of tubing. Coat tubing approximately 1" back.
Take care to keep cement from inside of tube.
12. Refer to Figure 18. Insert tubing into fitting with a twisting
motion to evenly spread cement. Be sure tubing is firmly
seated in fitting.
13. If fittings have been attached to tubing at the end opposite
the inlet bracket, be sure alignment is proper before
cement sets.
14. Refer to Figure 19. Tape wire to tubing to hold in place
and insert through hole in inlet bracket.
15. Connect each inlet line and branch line into main trunk
line. Complete low voltage wiring as main trunk line is
continued back to power unit.
CAUTION
When tubing is run through the wall stud, sole
plate, headers or else where building materials
will be attached, place a nail (Model 378) over that
area (on both sides if necessary) to prevent nails
from piercing tubing.
M O D E L C F 3 6 1 M O U N T I N G
T H R O U G H O L E P L A T E
3
/ "
8
I D E
M O U N T I N G
M O D E L C F 3 2 9 M O U N T I N G
FIGURE 13
M O U N T I N G
INCLUDE FITTING
MEASUREMENT
3
/ "
4
TUBING MEASUREMENT
FITTING
FIGURE 14
FIGURE 15
FIGURE 17
FIGURE 19
8
1
2 / " D I A . H O L E
2
1 3
1 / "
1 6
1 3
1 / "
1 6
F A C E
M O U N T I N G
1
2 / " D I A . H O L E
"
2
T H R O U G H O L E P L A T E
1 3
1 / "
1 6
F A C E
RECESS IN
3
/ "
4
PVC TUBING
FITTING
FIGURE 16
FIGURE 18
1 3
1 / "
1 6