Broan MD6TU Mode D'emploi page 3

MOUNTING POSITIONS OF PROBE &
PRESSURE SWITCH
DUCTWORK
PRESSURE
SWITCH
TUBING
PROBE
(air flow arrow
pointing in
AIR
direction
FLOW
of air flow)
DUCTWORK
VERTICAL
MOUNT THE PROBE & PRESSURE SWITCH
DUCTWORK
AIR
PRESSURE
FLOW
SWITCH
SHEET
METAL
SCREWS
TUBING
PROBE GASKET
(air flow arrow
pointing in
direction
of air flow)
WIRE THE SYSTEM
Wire the system as shown.
MAKE-UP AIR DAMPER
24V
TRANSFORMER
WIRING DIAGRAM
ONE DAMPER
DUCTWORK
AIR
FLOW
PROBE
(air flow arrow
pointing in
direction
of air flow)
DUCTWORK
HORIZONTAL
1/4"
SPADE
TERMINALS
LOW
VOLTAGE
WIRES
TUBE CONNECTED
Connect tubing
TO BLACK (+) INLET
onto outside of
black fitting.
Drill
PRESSURE SWITCH
3/8" HOLE
SET UP FOR
in ducting
INTERNAL BLOWERS
1/4"
SPADE
TERMINALS
LOW
VOLTAGE
WIRES
TUBE CONNECTED
TO GREY (-) INLET
PRESSURE SWITCH
SET UP FOR
EXTERNAL &
IN-LINE BLOWERS
24V
PRESSURE
SWITCH
BLACK (LINE)
WHITE (COMMON)
GREEN (GROUND)
WIRE THE SYSTEM (Continued)
MAKE-UP AIR DAMPER
PRESSURE
SWITCH
TUBING
24V
WIRING DIAGRAM
MULTIPLE DAMPERS
AIR
FLOW
Probe opening
pointing down
24V
20V
TRANSFORMER WIRING
AIR
FLOW
TEST THE SYSTEM
Once the damper, pressure switch, and probe is installed. Turn on the range hood to
Probe opening
high speed and confirm that the damper opens. Turn off the hood and check to see if
pointing down
the damper closes.
A qualified HVAC contractor should also ensure the proper operation and venting of all
combustion equipment in the home.
FALSE TRIPPING
Under certain extreme conditions there could be false tripping of the damper (opening
when the range hood blower is off). If false tripping is encountered, place an in-line
backdraft damper (7" model no. 97, 8" model no. 438, 10" model no. 421) between the
probe and the roof or wall cap.
SERVICE PARTS
97018853 Pressure Switch Kit
97013273 24V Transformer
99527207 6" Motorized Damper
99527208 8" Motorized Damper
99528460 10" Motorized Damper
MAINTENANCE
Regular maintenance is necessary to ensure the proper operation of the Damper system.
Failure to conduct such routine maintenance can jeopardize the ability of the Damper to
introduce fresh air into the home. Regular maintenance should include the following activi-
ties:
• Clean the outside bird screen to ensure it is free from debris and open to allow fresh air
to enter.
• Clean or replace the interior filter(s) which serve to filter fresh air before it enters the
home.
• Maintain a clear opening at the outdoor end cap, which means preventing the buildup of
snow, leaves, or vegetation at the end cap.
• During regular HVAC maintenance, have the mechanical contractor inspect the Damper
system for proper operation.
3
MAKE-UP AIR DAMPER
24V 24V
TRANSFORMER
24V CONTACTS
24V
PRESSURE
SWITCH
BLACK (LINE)
WHITE (COMMON)
GREEN (GROUND)