3
VIKING RANGE, LLC
Downdraft Ventilators
1. The interior down-
draft blower system is
designed for use with
3-1/4" x 10" duct-
work (can be transi-
tioned to 6" round).
Three different dis-
charge directions are
available with side-to-
side adjustment for
accurate alignment of
ductwork.
2. For best perfor-
mance: Choose the
ducting option which
allows the shortest
length of ductwork
RIGHT
DISCHARGE
DOWN DISCHARGE
LEFT
DISCHARGE
PLAN THE DUCTWORK
Interior Blower Installation
Exterior Blower Installation
10" ROUND
DISCHARGE
PLATE
1. The exterior downdraft
blower system is designed
for use with 10" round
ductwork.
2. For best performance:
Plan ducting which has the
shortest length of ductwork
and a minimum number of
elbows. Check location of
fl oor joists, wall studs, elec-
trical wiring or plumbing
for possible interference.
EQUALS 6 FT. OF
STRAIGHT DUCT
10" ROUND
ELBOW
EQUALS 6 FT. OF
STRAIGHT DUCT
6" ROUND
ELBOW
EQUALS 8 FT. OF
STRAIGHT DUCT
3. The system will operate most effi ciently when the ductwork
does not exceed 40 feet of equivalent duct. The chart, above,
shows equivalent feet of elbows and transitions. The number
of feet of straight duct plus the equivalent feet of transitions
and/or elbows to be used should equal 40 feet or less.
NOTE: The equivalent feet of various roof and wall caps has
been taken into consideration. Do not include them in this
calculation.
3-1/4" X 10" TO 6" RD.
TRANSITION
3-1/4" X 10"
90
O
ELBOW
29 "
5
16
2 "
1
8
VIDV500
INTERNAL
BLOWER
5"
2"
1"
3 "
1
4
3 "
5
8
1
4
7 "
11
16
18"
FROM
COUNTERTOP
TO BOTTOM
OF AIR BOX
"
29 "
5
16
2 "
1
8
2"
1"
3 "
1
4
3 "
5
8
1
4
7 "
11
16
FROM
COUNTERTOP
TO BOTTOM
OF AIR BOX
"
3 "
3
16
1
4
"
13
1
4
"
13
1 "
9
16
10" ROUND
ELBOW
and a minimum number of elbows and transitions. Check
location of fl oor joists, wall studs, electrical wiring or
plumbing for possible interference.
3. The system will operate most effi ciently when the ductwork
does not exceed 40 feet of equivalent duct. The illustration,
above, shows equivalent feet of a 10" round elbow. The
number of feet of straight duct plus the equivalent feet of
elbows to be used should equal 40 feet or less.
NOTE: The equivalent feet of various roof and wall caps has
been taken into consideration. Do not include them in this
calculation.
Interior Blower Installation
Exterior Blower Installation
TAKE MEASUREMENTS
(CONTINUED)
EQUALS
2 FT. OF
STRAIGHT DUCT
SIDE VIEW
OF DOWNDRAFT
WITH
VIDV500
INTERIOR
BLOWER
SIDE VIEW
OF DOWNDRAFT
WITH
10" ROUND ELBOW
(for connection
to VEDV900 or
VEDV1200 Exterior
Blower)
VIDV500
INTERIOR
BLOWER
