www.zephyronline.com
External Blower
CBE-1000
Model number: CBE-1000
Serial number:
Date of Purchase:
Sales Dealer:
MAY07.0101 © Zephyr Corporation.
NOTE:
The following instructions explain the mounting procedures for the CBE-1000 external blower.
Please refer to your hood manual for instructions on preparing the hood for use with external
blower.
Fig-5
24"
3"
8"
4"
5 5/8"
10 1/4"
30"
7 1/2"
7 1/8"
2"
1 5/8"
8"
2 3/4"
Fig-1
TYPICAL INSTALLATION
ROOF MOUNT
OUTSIDE WALL MOUNT
10" Elbow
10" Duct
10" E lbow
Roof
Hood
Outside Wall
Hood
Recommended for use only over conventional domestic gas and electric ranges.
2
1. Remove and discard shipping brackets and wood support (attached to sides of motor and inlet collar). Fig. - 7
BEFORE INSTALLING , check to see if blower wheel turns freely and does not rub on motor brackets. Check damper door
to be sure it moves freely and spring returns door to closed position.
2. Provide 14” x 18” hole through the roof or wall as shown in Fig. - 2. For reference, location of 10” duct connection and
wiring connection is shown.
3. Install blower on roof or wall, with discharge
Fig-2
(screened end) pointing down, according to
standard roofing procedures.
14"
NOTE: Front discharge edge should be on top
of shingles and rear and side edges under shingles.
Unit must be sealed between roof or wall and under
side of flange with roofing mastic to prevent leaks.
For installation on a flat roof, or roofs with pitch
Top View
of less than 1 1/2’ in 12”, install blower on curb
as shown in Fig. - 3. Position curb on sloping roof
with 2” dimension facing down slope. Position curb
on flat roofs so that disc harge points away from
prevailing wind.
Down Slope
of
Roof or Wall
18"
10 1/2"
Fig-7
4 1/2"
7 3/4"
1 1/2"
Remove
Remove
Remove
Fig-3
Remove
1 1/2"
6"
2"
30"
24"
3
4. Connect the blower to exhaust system with a 10” diameter metal duct only. Use 10” adjustable elbow to adjust to roof
angle. IMPORTANT: You must run 10” round duct work from the external blower to the ceiling. Before the duct
work passes through the ceiling bracket, use a 10” to 8” transition adapter and run 8” duct work to the opening
on the hood. The 8” duct work run should not exceed 60” in length. (see Fig 4a)
External Blower
Tape and screw all joints to prevent air leaks. See Fig - 4.
Roof
Shingle Over Flashing
10” Adjustable Elbow
Shingle Under Flashing
10” Diameter Duct Work
10” to 8” Transition Adapter
Ceiling
Screw and Tape Joint
8“ Duct Work
Ceiling Bracket
Conduit
Hood
Fig - 4a
Fig - 4
5. Remove top cover of blower to access wiring connections. Retain mounting screws.
6. Run electrical conduit per local code to conduit outlet in bottom plate of blower (use liquid tight connection). Other end of
conduit will connect to external blower wiring box in your hood. See installation instructions earlier in manual for
wiring location.
7. Run (5) wires in conduit (1 black, 1 white, 1 blue, 1 red and 1 green ground) between the blower and hood. Check for
local code compliance for style and gauge of wires. The ground wire shall have a suitable gauge according to the
Electrical Code and Local Regulations. See Fig. -6 for wiring details. These wires will connect to the external blower
wiring box on top of the hood.
CAUTION: Before wiring the unit, switch power off at service panel and lock the service disconnecting means to prevent
power from being switched on accidentally.
8. Replace cover onto blower from step 5 and secure with screws provided. All screws must be in place on cover.
Fig - 6
CBE-1000: WIRING DIAGRAM
White (common)
External Blower
Wiring Box
(hood)
Black (high)
Blue (med)
Red (low)
Junction Box
(CBE-1000)
Green (ground)
CBE-1000: 1/2 HP 3 - Speed Motor. 115V AC, 60Hz /15 Amp Circuit Required
4
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