General Description - Bosch DHD Série Manuel D'installation

Top Cap
Internal Blower
(Not Included)
Figure 1
INTRODUCTION

GENERAL DESCRIPTION

The complete downdraft system consists of the ventilator,
the intake and the blower (See Fig. 1). The blower can be
either integral (mounted on the vent intake in the cabinet
under the cooktop) or a remote (mounted on the roof or
outside wall. When a remote blower is used, a duct transi-
tion is mounted on the ventilator intake in place of the
integral blower to connect the intake to the ductwork. The
duct transition must be purchased separately.
The integral blower or duct transition can be mounted in
different positions on the intake to route ductwork to avoid
cabinet, building framing, utilities, etc.
The downdraft system is available in 30-inch and 36-inch
models, It is intended for use with all brands and models of
residential 30-inch or 36-inch gas or electric cooktops
except professional style cooktops.
Strain Relief
Step 1: PLAN THE INSTALLATION
Carefully follow the planning procedures listed below (See
Figure 2).
A. Determine whether a remote or integral blower will be
B. Make sure that adequate cabinet and counter space
C. Consider that cross drafts created by adjacent open
D. For gas cooktop installations make sure that a mini-
E. Provide for air supply or "make-up air" to the room
Page 2
used. Remote blower installation requires 4 wires
plus a ground wire to run from the downdraft to the
blower.
has been provided and that the intake will be accessible
if service is required.
windows, doors, air conditioning, old heating vents,
recessed ceiling lights, and traffic patterns may affect
performance.
mum 10 square inch opening is provided in the toe-kick
or other cabinet area. Inadequate ventilation of the
cabinet below the cooktop may result in flame outage
when operating the vent system.
where unit will be installed. If "make-up air" is not
provided, then problems, such as fireplace chimney
downdrafts, could result.