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Proper installation/ducting is extremely
important to ensure maximum
performance. Use a qualified and
trained installer.
DUCTING
• Check with a qualified and
trained installer or local codes
for makeup air requirements, if
any.
• Max. duct run length
o For 300 – 1,200 CFM—50’
(152.4 m)
o For 1,500 CFM—75’ (22.9 m)
o For general reference only;
for longer duct runs, increase
duct size and contact a
qualified and trained installer.
o Straight runs and gradual
turns are best; for example,
each 90° elbow is equivalent
to 5’ – 10’ (1.52 – 3.05 cm) of
straight run.
• 7” (17.8 cm) round duct for
300 – 600 CFM; 10” for 900 –
1500 CFM
o Never use flexible duct; it
creates back pressure/air
turbulence and greatly
reduces performance.
GAS
Not applicable
ELECTRICAL
• Hardwire direct with two-wire
ground
• 120 VAC/60 Hz
• Max. amp usage (rating
includes recommended
ventilator kit rating)—see
Dimensions & Specifications
table
PLUMBING
Not applicable
DTWS Slim Traditional
Wall Hood
DTWN Tall
Traditional Ledgeless
Wall Hood
PLANNING AND DESIGN GUIDE
VIKINGRANGE.COM • 1-888-VIKING1
RELEASED 12/1/07
©2007 VRC—INFORMATION SUBJECT TO CHANGE
VENTILATION
Designer Built-In Wall Hoods
Installation Requirements
* A 1,200 CFM interior- or exterior-power ventilator should be used when installed over range/rangetop with gas char-grill.
** It is recommended that the 1,500 CFM ventilator be used with longer duct runs.
Note: Maximum amp rating for hoods includes recommended ventilator kit rating. All products must be hard wired with two-wire ground. An interior- or
exterior-power ventilator kit must be purchased for installation with all 18”H. hoods.
Model Ventilator Kits Duct Size Max. Amps
Interior Exterior Interior Exterior Interior Exterior
DTWS3049 DIV300/440 DEV900 7” (17.8 cm) 10” (25.4 cm) 1.7/3.2 6.6
DTWS3649 DIV300/440 DEV900 7” (17.8 cm) 10” (25.4 cm) 1.7/3.2 6.6
DTWS4249 DIV440 DEV900 7” (17.8 cm) 10” (25.4 cm) 3.2 6.6
DTWS4849 DIV880 DEV1200/1500** 10” (25.4 cm) 10” (25.4 cm) 5.6 4.3/5.1
DTWN3048 VIV300/600/1200* VEV900/1200* 7” (17.8 cm) 10” (25.4 cm) 2.4/4.6/6.6 6.6/3.9
DTWN3648 VIV300/600/1200* VEV900/1200* 7” (17.8 cm) 10” (25.4 cm) 2.4/4.6/6.6 6.6/3.9
DTWN4248 VIV600/1200* VEV900/1200* 7” (17.8 cm) 10” (25.4 cm) 4.6/6.6 6.6/3.9
DTWN4848 VIV1200* VEV1200/1500** 10” (25.4 cm) 10” (25.4 cm) 7.0 4.3/5.1
Note: All CFMs are based on tests with 0.1 static pressure. Without applying static pressure (some brands do not), CFM could be greatly
overstated.
UTILITY REQUIREMENTS