Broan MD6TU Manual De Instalación página 2

TYPICAL INSTALLATIONS
Installations will vary according to the location in the home where the unit is installed
and which model Damper is used. Use the following illustrations and notes as guidance
for your own installation. Always comply with local code requirements and in any
instance where a detail shown below conflicts with local code, the local code provision
shall apply.
CENTRAL SYSTEM SUPPLY AIR
THERMOSTAT
AIR DISTRIBUTION FAN
AIR HANDLER UNIT
Damper connected to return side of central duct system.
INTERIOR WALL
WALL
REGISTER
Damper and outside air duct connected directly to a ceiling, floor, or wall register.
INSTALL THE DAMPER
TO CENTRAL SYSTEM
RETURN AIR OR INTERIOR
WALL REGISTER
AIR FLOW
Install the damper as shown. Make sure damper flap is in a vertical position when
closed and power is off. The set screw can be used to adjust the damper opening -
thereby balancing the inside and outside air pressure when the range hood exhausts
at high speed.
PRESSURE SWITCH OPERATION
The pressure switch is designed to operate when the static pressure increases to 0.05"
Ps or more. It may not operate at low speeds since the pressure is below this limit.
MULTIPLE DAMPERS
More than one damper may be required to balance the system. If more than one is
required use (1) MD6TU or MD8TU and then use the MD6 or MD8 dampers as ad-
ditional dampers.
EXTERIOR WALL
CENTRAL SYSTEM RETURN AIR
INSULATED OUTSIDE
AIR DUCT (slope toward wall cap)
FRESH AIR INLET WALL CAP
WITH BIRD SCREEN
VENTILATION AIR INTAKE
(locate away from pollutant sources)
FIELD MEASUREMENT OF AVAILABLE
STATIC PRESSURE. (See "Install The
Damper" section on page 3 for damper
balancing instructions.)
AUTO. MAKE-UP AIR DAMPER
REGISTER BOX ADAPTED
WITH SLIDE-IN FILTER (optional)
CENTRAL DUCT SYSTEM FILTER
EXTERIOR WALL
INSULATED OUTSIDE
AIR DUCT (slope toward wall cap)
WALL CAP WITH
BIRD SCREEN
VENTILATION AIR INTAKE
(locate away from pollutant sources)
MOTORIZED DAMPER
REGISTER BOX ADAPTED
WITH SLIDE-IN FILTER (optional)
SET SCREW
OUTSIDE AIR
AIR FLOW
DAMPER FLAP (Install in
vertical position shown.)
INSTALLATION OF PRESSURE SWITCH
AND PROBE
For the probe & pressure switch to work effectively the roof or wall cap must have a
spring loaded damper. The following Broan products are recommended:
Roof Cap models:
437 – High capacity up to
1200 cfm
634 / 644 – For 3¼" x 10" and
up to 8" round
634M – For 6" round
LOCATION OF PROBE AND
PRESSURE SWITCH
The probe must be mounted between the range hood damper and the wall cap, roof
cap, in-line blower or external blower. Mount the probe as close to the hood outlet as
possible but make sure the hood damper operation is not affected.
The pressure switch should be mounted so it is accessible for any future service.
The switch can mounted no more then 72" away from the probe. If longer tubing is
required then what is supplied, purchase 1/4" I.D. PVC tubing from a local source.
See the illustrations below for possible installation scenarios.
ROOF CAP
w/DAMPER
IN-LINE
EXHAUST
DAMPER
DUCT
PRESSURE
HOOD
SWITCH
FLUE
PROBE
RANGE
HOOD
TYPICAL INSTALLATION WITH
INTERNAL BLOWER AND ROOF VENT
EXHAUST
IN-LINE
DUCT
DAMPER
PRESSURE
HOOD
SWITCH
FLUE
PROBE
TYPICAL INSTALLATION WITH
INTERNAL BLOWER AND WALL VENT
INLINE
BLOWER
EXHAUST
DUCT
HOOD
PRESSURE
FLUE
SWITCH
PROBE
TYPICAL INSTALLATION WITH INLINE BLOWER
2
Wall Cap models:
WC638 – For 3¼" x 14" duct
639 / 649 – For 3¼" x 10" duct
647 – For 7" round duct
843BL / 641 – For 6" round duct
643 / 643FA – For 8" round duct
613 – For 12" round duct
441 – For 10" round duct.
KITCHEN
CABINET
PRESSURE
SWITCH
TYPICAL INSTALLATION WITH
INTERNAL BLOWER AND HORIZONTAL
DUCTING w/ WALL VENT
WALL CAP
w/DAMPER
RANGE
HOOD
ROOF CAP
w/DAMPER
HOOD
FLUE
TYPICAL INSTALLATION
WITH EXTERIOR BLOWER
RANGE
HOOD
TUBING
PROBE
WALL CAP
w/DAMPER
RANGE
HOOD
EXTERIOR
BLOWER
EXHAUST
DUCT
PRESSURE
SWITCH
PROBE
RANGE
HOOD