Remote Blower (900 CFM) RB900
USE WITH INCA PRO PLUS ONLY
Installation Instructions
Use & Care Manual
READ AND SAVE THESE INSTRUCTIONS
The installer must leave these instructions with the
homeowner. The homeowner must keep these
instructions for future reference and for local electrical
inspectors' use.
WARNING
You can be killed or seriously injured if you don’t
follow instructions.
TO REDUCE THE RISK OF FIRE, ELECTRIC
SHOCK, OR INJURY TO PERSONS, OBSERVE THE
FOLLOWING:
Installation work and electrical wiring must be
done by qualied person(s) in accordance with all
applicable Codes and Standards, including Fire
Rated Construction. Sufcient air is needed for
proper combustion and exhausting of gases through
the ue (chimney) of fuel burning equipment to
prevent back drafting. Follow the heating equipment
manufacturer’s guideline and safety standards such
as those published by the National Fire Protection
Association (NFPA), and the American Society of
Heating Refrigeration and Air Conditioning Engineers
(ASHRAE), and the local code authorities. When
cutting or drilling into wall or ceiling, do not damage
electrical wiring and other hidden utilities. Ducted
fans must always be vented to the outdoors.
Use this unit only in the manner intended by the
manufacturer. If you have any questions, contact
the manufacturer.
Before servicing or cleaning unit, switch power off
at service panel and lock the service disconnecting
means to prevent power from being switched on accidentally. When the service disconnecting means
cannot be locked, securely fasten a prominent warning
device, such as a tag, to the service panel.
WARNING - TO REDUCE THE RISK OF SHOCK: This
fan must be installed with an isolating wall control/
switch.
Note: please refer to the Inca Pro Plus installation
instructions for connecting the remote blower to
the rangehood
CAUTION – To reduce risk of re and to properly
exhaust air, be sure to duct air outside – Do not vent
exhaust air into spaces within walls or ceilings or
into attics, crawl spaces, or garages”
Important
Observe all governing codes and ordinances. Proper installation
is your responsibility. Make sure you have everything necessary for
correct installation. It is the responsibility of the installer to comply with
the clearances specied.
To avoid damage to motor bearings and impellers, keep drywall spray,
construction dust, etc. away from the remote blower.
Before installing remote blower, read the installation
instructions for the vent system that will be used in
conjunction with this remote blower.
Care of your remote blower
Disconnect power supply and lock out service panel before cleaning
or
servicing. To clean, remove cover and vacuum blower and housing,
being careful not to damage blower wheel. The motor is permanently
lubricated. Do not oil or disassemble.
Electrical requirements
Important: Observe all governing codes and ordinances.
It is the customer’s responsibility:
• To contact a qualied electrical installer.
• To assure that the electrical installation is adequate and in
conformance with:
National Electrical Code, ANSI/NFPA 70 — latest edition*, or CSA
Standards C22.1-94, Canadian Electrical Code, Part 1 and C22.2
No.0-M91 - latest edition** and all local codes and ordinances.
If codes permit and a separate ground wire is used, it is recommended
that a qualied electrician determine that the ground path is adequate.
Do not ground to a gas pipe. Check with a qualied electrician if you
are not sure remote blower is properly grounded. Do not have a fuse in
the neutral or ground circuit.
A 120-volt, 60-Hz, AC-only supply wired for 15 amp service is
required.
The blower motor must be connected with copper wire only.
CAUTION: For General Ventilating Use Only. Do Not
Use To Exhaust Hazardous or Explosive Materials
and Vapors.
To reduce the risk of re, use only metal ductwork.
This unit must be grounded.
This unit is suitable for use with solid-state speed
controls.
For Residential use ONLY
The remote blower must be connected to the rangehood wiring as
described in the rangehood instructions for connecting the remote blower
motor wiring. Flexible armored or nonmetallic cable must be used. A
U.L./CSA-listed strain relief must be provided at each end of the power
supply cable. Wire sizes must conform to the requirements of the National
Electrical Code ANSI/NFPA 70 — latest edition* or Canadian Electrical
Code, C22.1 and C22.2 No. 113-M1984 (or latest edition),** and all local
codes and ordinances. 14 gauge wire (minimum) is recommended.
Copies of standards listed may be obtained from:
* National Fire Protection Association
One Batterymarch Park
Quincy, Massachusetts 02269
** CSA International
8501 East Pleasant Valley Road
Cleveland, Ohio 44131-5575
Version 11/10 - Page 1
Venting requirements
Determine which ducting method is best for
your application. Duct system can extend
either through the wall or the roof. Locate
the remote blower so that the length of the
duct system and the number of elbows
is kept to a minimum to provide efcient
performance. Where possible, remote
blower should be centered between wall
studs or roof rafters. The size of the duct
system should be uniform. Do not install
two elbows together.
REMOTE BLOWER CONTENTS
A
Use duct tape to seal all joints in the duct
system. Use caulking to seal remote wall
or oor opening around the cap. Flexible
duct is not recommended. It creates back
pressure/air turbulence and greatly reduces
performance. Make sure there is proper
clearance within the wall or oor for exhaust
duct before making cutouts. Avoid pipes,
wires, or other duct systems that may be
running through the wall. Do not cut a joist
or stud unless absolutely necessary. If a
joist or stud must be cut, then a supporting
frame must be constructed.
Install this side of the fan
facing an unoccupied space.
A) Remote Blower
B) Ducting plate for Inca Pro Plus with
wiring box and cables (See Inca Pro Plus
instructions for more information)
C) Installation Screws for Mounting Plate
C
Dimensional diagram
MAKE SURE THAT THE DISCHARGE END OF THE REMOTE
BLOWER FACES AWAY FROM THE DIRECTION OF PREVAILING
WINDS.
Maximum length of ductwork
55 feet for 10" round ductwork - count 90°
elbows as 5 feet and 45° elbows as 3 feet.
Duct length is given as a general reference only. For a longer
duct run, or smaller duct system, contact a qualied and
trained duct installer. Check with local codes for makeup
air requirements, if any. It is recommended that you use
round duct instead of rectangular duct, especially if elbows are
required. If rectangular duct is required, if should be transitioned
to 10" (25.4 cm) round duct as soon as possible.
For best performance, use no more than three 90° elbows.
If more than one elbow is used, make sure that there is a
minimum of 24 inches of straight duct between any two
elbows. Do not install two elbows together.
WARNING
You can be killed or seriously injured if you don’t follow
instructions.
Excessive Weight Hazard
Use two or more people to move and install remote
blower.
Failure to do so can result in back or other injury.
Begin the installation
1. Discard any cardboard packaging from the blower wheel.
2. Remove wiring box cover and screws.
3. Attach an appropriate U.L./CSA-listed strain relief in the
knockout.
Note: For most installations, it is recommended that the strain relief
be installed so that it can be tightened from inside the remote blower
housing.
4. Reattach the wiring box cover loosely. It will be removed again
later.
Version 11/10 - Page 2
Wall installations
1. Choose a location on an outside wall where no wall studs, wires,
pipes, etc. run through the opening area. A minimum distance
of 24" (61 cm) from remote blower to ground may be required
depending on local code. Make sure to leave room for anticipated
snowfall in your region.
2. Drill the guide hole in the center of the 11" (27.9 cm) diameter
opening area.
3. Mark a 27-1/2" x 34" (69.9 x 86.4 cm) rectangle on wall as
indicated in FIGURE 1.
4. Cut a rectangular hole in the siding only. Do not cut sheathing.
Nail down all siding ends.
5. Mark an 11" (27.9 cm) diameter circle around guide hole as
indicated in FIGURE 1. Mark center of the 1-1/4" (or 3.0 cm)
diameter hole for electrical wiring as indicated in FIGURE 1.
6. Cut 11" (27.9 cm) diameter hole in sheathing. Drill the 1-1/4"
(or 3.0 cm) diameter electrical wiring hole.
7. Run a large bead of caulk on the back side of the housing along
the outer edge.
Roof installations
FOR FLAT ROOF INSTALLATIONS SEE NEXT PAGE
1. Choose location on rear slope of roof that minimizes vent run.
Avoid obstacles such as TV leads, electric lines, etc. If remote
blower top is level with roof peak, it will not be seen from street.
Remember this location as you work from inside the attic.
2. Mark a point half-way between the rafters and drill a guide hole
at this point.
3. From the outside, using the guide hole as a starting point, mark
the rectangular cut-out as indicated in FIGURE 2. Remove ONLY
the shingles in THIS AREA.
4. Mark an 11" (27.9 cm) diameter circle around guide hole as
indicated in FIGURE 2. Mark center of the 1-1/4" (or 3.0 cm) diameter
hole for the electrical wiring as indicated in FIGURE 2.
5. Cut out the roof boards along the 11" (27.9 cm) diameter circle.
Drill the 1-1/4" (or 3.0 cm) diameter electrical wiring hole.
6. Remove roong nails from the upper two-thirds of the shingles
to allow the back ashing sheet on the remote blower housing to
t under them.
8. Center the remote blower ring in the 11" (27.9 cm) diameter
hole, making sure that the 1-1/4" (or 3.0 cm) diameter electrical
wiring hole lines up with the hole in the wiring box.
9. Attach the remote blower to wall using screws appropriate for
your installation. All four holes in the back panel must be lled to
prevent moisture that may get inside the remote blower housing
from leaking into the home.
10. Seal all around the mounting screw heads with caulk.
11. Go to “Make the duct & electrical connections”, Page 4.
7. Center the remote blower ring in the 11" (27.9 cm) diameter hole,
making sure that the 1-1/4" (or 3.0 cm) diameter electrical wiring
hole lines up with the hole in the wiring box.
8. Attach the remote blower to roof or frame using screws appropriate
for your installation. All four holes in the back panel must be lled
to prevent moisture that may get inside the remote blower housing
from leaking into the home.
9. Seal all the shingles around the remote blower housing, ashing
sheet, and mounting screw heads or frame with roong cement.
Top and side anges of the back plate may be covered with trim. It
is recommended that electrical connection be made and checked
rst. Do not block the vent grill opening at the bottom of the trim.
Doing so will decrease blower performance.
Figure 1- Wall installations Figure 2 - Roof installations
Version 11/10 - Page 3