Norton Rixson FM 972U and FM 973U Door Release, Overhead, Rolling Door, Special Door Application Installation In…_DR100020

Figure 1 - Rolling steel fire door shown above. The 972U is adaptable to many other doors or shutters through the use of various linkage systems.

Cable

• 2. Anchorage to supporting wall should be capable of withstanding a 300 lb. pull.
• 3. Factory mutual approved for Class 1, Division 2 locations.
• 4. Power requirements: 12 VDC, 24 VAC, 120VAC.

12 VDC .08 amps 24 VDC .08 amps 24 VAC .150 amps 120 VAC .150 amps

Figure 2 - Hinged fire door for duct passing through opening in fire wall.

Figure 3 - Center pivoted self-closing window.

• 5. All mounting preparation to be done by others.
• 7. All dimensions given in inches (mm).

972U Door Release Overhead/Rolling Door and Special Door Application

NORTON RIXSON

DR100020

TEMPLATE NUMBER REV 4 SHEET 1 of 2

DATE 06/22

Approved 2022-06-16

Latch Shown In Engaged Position Latch Shown In Release Position

Installation Instructions

The 972U may be mounted in various postions to suit in-use conditions. To insure proper operation the following installation practices must be followed.

• 1. Check existing power supply rating against rated voltage on unit. Voltage specifications label located inside of unit in the box cover.
• 2. Unit must be mounted vertically.
• 3. The pull on the latch arm must always be 90° to the face of the main unit.

972U Door Release Overhead/Rolling Door and Special Door Application

NORTON RIXSON

TEMPLATE NUMBER REV DR100020

SHEET 2 of 2

DATE

Approved 2022-06-16

4 06/22