Honeywell Modutrol IV 72 Series Product Data page 6

SERIES 72 MODUTROL IV™ MOTORS
Adapter Bracket
The 220738A Adapter Bracket, positioned between the motor
and the equipment, raises motor shaft height by 0.75 in.
(19 mm) to match that of previous Modutrol
The following applications require this bracket:
• Q607 External Auxiliary Switch.
• Damper linkage applications requiring added clearance to
allow:
— Crank arm rotation through the downward position.
— Sufficient damper linkage to reach the motor shaft.
• All valve linkages except the Q5001.
NOTE: When the bracket is not used in a replacement
application, the damper linkage requires adjustment
for the new shaft position.
To mount the motor with the bracket:
1. Mount the bracket to the equipment with existing or
standard bolts.
2. Using the provided bolts, mount the motor to the bracket
threaded holes. See Fig. 3.
For valve linkage applications (other than the Q5001):
1. Mount the bracket to the linkage.
2. Position the motor on the bracket to align the motor
shaft with the linkage.
3. Attach the motor to the bracket with the four bolts
provided. See Fig. 4.
63-2202—4
Damper Linkages
The motor does not include a crank arm. Order the crank arm
separately (see Accessories in the Specifications section). For
®
Motor models. detailed instructions on the assembly of specific linkages,
refer to the Installation Instructions packed with the linkage.
Valve Linkages
The Q100 Linkage requires a 220738A Adapter Bracket for all
valve applications. Applications with the Q5001 Valve Linkage
do not require the 220738A Adapter Bracket (see Fig. 4).
For detailed instructions on specific linkage assemblies, refer
to the instruction sheet packed with the linkage. In general,
check the following points when installing a motor and linkage:
• Adjust valve and louver-type damper linkages so the
damper or valve moves through only the maximum required
distance while the motor moves through its full stroke.
• With modulating control, maximum damper opening should
be no more than 60 degrees. Little additional airflow is
provided beyond this point.
• Do not exceed load and torque ratings in any application.
Junction Box
When used with liquid-tight conduit connectors, the junction
box provides NEMA 3 weather protection for the motor. The
junction box, standard with replacement motors, encloses the
terminals and provides knockouts for wiring conduits. Housing
an internal transformer or internal auxiliary switches requires
using a junction box.
6
CAUTION
Equipment Damage Hazard.
Stalling a motor can damage the drive shaft.
Ensure installation of motors and linkages allows the
motor to drive through full stroke without obstruction.