DCS 221712, Installation Manual

Page: 8 / 48

6
BEFORE INSTALLING HOOD
1. For the most efficient air flow exhaust, use a straight run or as few elbows as possible.
CAUTION:
Vent unit to outside of building only.
2. Two people are necessary for installation.
3. The hood is fitted with screws suitable for most surfaces. Consult a qualified installer. Check if they
perfectly fit with your ceiling.
4. Do not use flex ducting.
5. COLD WEATHER installations should have an additional backdraft damper installed to minimize
back flow of cold air and a nonmetallic thermal break to minimize conduction of outside temper-
atures as part of the ductwork. The damper should be on the cold air side (outside wall) of the
thermal break.
The break should be as close as possible to where the ducting enters the heated portion of the
house.
6. Hood installation height above cooktop/range is the user’s preference. Lower installation heights
will improve the efficiency of capturing cooking odors, grease, and smoke. These hoods have been
approved for installation heights 30” and above the cooktop/ranges. Taller people may find a 30”
installation height is inconvenient. DCS recommends an installation height between 30” and 36”.
7. For installation over DCS range and cooktop models RGS-364GL or CS-364GL, the IVS52 model
venthood is recommended.
8. Make up air: Local building codes may require the use of Make-Up Air Systems when using Ducted
Ventilation Systems greater than specified CFM of air movement.
The specified CFM varies from locale to locale. Consult your HVAC professional for specific
requirements in your area.