Locating The Power Unit; Tubing And Wall Inlet Locations - NuTone VX1000C Installation Instructions Manual

THE SPLIT-LEVEL HOUSE
Like the two-story house, the split
level installation commonly calls for a
two-level trunk line. Here, the power
unit is located in the garage. The
intake tubing runs exposed up the
garage wall and into the ground level
section's attic. Two branch lines
connect this part of the trunk line to
inlet lines which are dropped inside
interior walls. A vertical branch line
runs to the upstairs attic, where the
trunk line branches into a T-shape.
This trunk line connects to two
upstairs inlet lines and to one inlet line
which drops through an upstairs wall
and down into the third-level utility
room to service this entire level. See
Figure 3.

LOCATING THE POWER UNIT

• Locate the power unit at the lowest possible position
away from the general living area in an accessible
location for changing the filter bag or debris bucket.
• When planning, remember the power unit is equipped
with an inlet to service a garage, basement, utility room,
etc., wherever it is located.
• Locate the power unit within six feet of a grounded
electrical outlet. The VX475 and VX550 power units
require a 120 V, individual 20-amp branch circuit with a
NEMA 5-20R receptacle. The VX1000 power units
require a 240 VAC, individual 20-amp branch circuit with
a NEMA 6-20R receptacle.
• Do not locate the power unit close to a source of extreme
heat (i.e., water heater) or in an area with a high ambient
temperature (i.e., attic, furnace room).
• If the power unit is located in a closet or a small utility
room, make sure the area is well-ventilated (i.e., with
door louvers).
• Exhausting the power unit to the outside is recommended
for optimal performance. The exhaust should not be vented
into a wall, a ceiling or a concealed space in the house.
The exhaust line should be vented outside the home
using a Model 393 or CI330 wall caps.
TRUNK
LINE
EXHAUST
INTAKE
POWER
UNIT
TUBING AND WALL
INLET LOCATIONS
1. Locate inlets on interior walls, choosing central
locations which allow several rooms to be cleaned from
a single inlet using a 30-foot long hose.
2. The tubing installation should consist of a main trunk line
running from the farthest wall inlet to the power unit
location, with branch lines running to each additional
inlet. Keep all tubing lines as straight as possible and use
as few fittings as possible.
3. Beginning at the area farthest from the power unit,
choose a tentative inlet location. Measure 30 feet from
the proposed inlet location to the farthest corner of the
rooms to be cleaned by that inlet to determine if inlet
location is proper. If working from blueprints (or building
plans drawn at 1⁄4" = 1 ft. scale), use a 7½" chain as your
guide to determine inlet locations.
4. Locate inlets within six feet of an electrical receptacle
to allow use of optional current-carrying hose.
5. Be sure inlets will not be blocked by doors or furniture.
6. Be sure inlets will not interfere with electrical, plumbing
or other mechanical installations.
7. Move tentative inlet location if necessary. Use the same
procedure to determine each additional inlet location,
always working toward the power unit.
4
VERTICAL
BRANCH
LINE
BRANCH
INLET
LINE
BRANCH
LINES
INLET
LINE
INLET
FIGURE 3