Installation Requirements

VENTILATION

Designer Built-In Wall Hoods

DTWS Slim Traditional	DTWN Tall
Wall Hood	Traditional Ledgeless
	Wall Hood

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.

UTILITY REQUIREMENTS

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

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.

Model

Ventilator Kits

Interior Exterior

Duct Size

Interior Exterior

Max. Amps

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

*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.

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VENTILATION