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ASSEMBLING THE TUBING SYSTEM (CONT'D)
CONNECTING THE LOW-VOLTAGE WIRING (CONT'D)
At the joint of the inlet line and the branch line, make a
two-wire connection. Use wire nuts to make the connections
and insulate each connection with electrical tape.
At the junction of every branch line and the trunk line, cut the
trunk line wire and connect it to the branch line wire. Connect
this wiring in groups of threes–one branch wire, one in-coming
trunk line wire, and one out-going trunk line wire. Insulate all
wire connections with electrical tape.
Complete all wiring connections up to the power unit’s intake
access hole. You will make this connection when you mount
and connect the power unit. If, for some reason, you want to
connect the wire as you go along, make the same two-wire and
three-wire connections where required.
ASSEMBLING A BASEMENT TRUNK LINE
Basically, the tubing network
is assemble the same way for
a basement installation. Begin
the trunk line at the farthest
inlet line from the power unit.
Measure and cut the inlet tubing
to the length required to align
the trunk line with the joists or
ceiling. Cement the inlet tubing
and connect at 90° elbow. Then,
run the trunk line until you reach
a branch line junction point.
Attach the tubing to the joists
or ceiling with either perforated
metal or support strapping
(support strapping is available
from NuTone).
Make all branch line connections in the same way you would
an attic installation. Make sure that all branch lines enter the
trunk line at an angle that is at least levelled with the trunk line.
Make sure all the fittings are oriented so the air flows toward the
power unit. Complete the trunk line to the power unit location.
USING FLEXIBLE TUBING (MODEL CF367)
Flexible tubing may be used
to circumvent an obstacle or
to make a difficult turn. In the
example illustrated here, the
flexible tubing is used in order
to run a branch line under a
support beam. Attach this tubing
to the PVC tubing, cementing
only the outside of the PVC
tubing as you would for a
hard-fitting connection.
Whenever you use the flexible
tubing, you must secure both
ends of it with support strapping.
AE0033
AE0034
AR0038
AO0062
AO0063
AR0039
AO0064
AO0065
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