Broan MD6TU Manual Del Usuario página 4

BROAN
MODELS MD6TU « MD8TU
INSTALL THE DAMPER
TO CENTRAL SYSTEM SET SCREW
RETURN AIR OR INTERIOR
WALL REGISTER , OUTSIDE AIR
4,
iGpo
[_ DAMPER FLAP (install in
vertical position shown.)
Gama
AIR FLOW
aan
AIR FLOW
Install the damper as shown. Make sure damper flap is in a verti-
cal 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 additional dampers.
Page 4
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 314" x 10" and up to 8" round
634M — For 6" round
WALL CAP MODELS:
WC638 — For 3%" x 14" duct
639 / 649 — For 314" 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.