MODELS MD6TR • MD8TR
Page 3
MAKE-UP AIR DAMPER
RANGE HOOD
24V
TRANSFORMER
(INCLUDED)
RELAY
120V 60HZ
LINE IN
120V
60HZ
LINE IN
24V
20 GA.
BELL WIRE
Damper and outside air duct connected directly to a ceiling, floor, or wall register.
INTERIOR WALL
WALL
REGISTER
REGISTER BOX ADAPTED
WITH SLIDE-IN FILTER (optional)
MOTORIZED DAMPER
FIELD MEASUREMENT OF OUTSIDE
AIR DUCT PRESSURE. (See “Install The
Damper” section on page 3 for damper
balancing instructions.)
WALL CAP WITH
BIRD SCREEN
INSULATED OUTSIDE
AIR DUCT (slope toward wall cap)
EXTERIOR WALL
VENTILATION AIR INTAKE
(locate away from pollutant sources)
INSTALL THE DAMPER
OUTSIDE AIR
TO CENTRAL SYSTEM
RETURN AIR OR INTERIOR
WALL REGISTER
DAMPER FLAP (Install in
vertical position shown.)
AIR FLOW
AIR FLOW
CONNECT TO 24V
TRANSFORMER & RELAY
SET SCREW
1. Install the Damper as shown. Make sure damper flap is in a ver-
tical position. 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.
2. Wire the system as shown.
