United Enertech CR Installation And Maintenance Instructions

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Use and Operation:

The CR damper is a device that responds automatically to duct pressure changes to regulate airflow in supply or exhaust applications.
The damper adjusts the amount of free area thereby controlling constant velocity and airflow.

Installation:

1. CR Dampers may be installed either in horizontal or vertical round duct. If installed horizontally, the BAS marking must face downward.
2. Device to be installed in register boxes, rigid ducts, or duct collars through a friction fit caused by the rubber gasket. The gasket
also creates an air seal. DO NOT USE FASTENERS TO INSTALL THIS PRODUCT.
3. If installed in an intake position, the damper must be set back at least three times the duct diameter from intake grilles. The damper
must also be set back at least three times the duct diameter from duct connections, duct bends, or other places with turbulent air.
4. If installed in an exhaust position, the damper must be set back at least the distance of the duct diameter from exhaust grilles. The
damper must also be set back the distance of the duct diameter from duct connections, duct bends, or other places with turbulent air.
5. Install with future access for removal or inspection.
6. Avoid using fasteners in the duct where the damper is placed to prevent
ineffective operation and damage.
7. Avoid contact between the damper and gypsum board duct.
8. Install in accordance with necessary mechanical and building codes.
9. Install dampers following the correct airflow direction of the duct.
CR Damper
Duct
Flex
Dia.
Duct
BAS
Marking Down
Duct
Flex
Dia.
Duct
Airflow
Register Box
/ Rigid Duct
Duct
Duct
Dia.
Dia.
CR Damper
BAS
Marking Down
Model CR
Flex
Duct
Duct
Dia.
CR
Damper
Airflow
Duct Collar / Grille
3 x Duct Dia.
Airflow
Register Box
/ Rigid Duct
(Constant Airflow Regulator)
Flex
Duct
Duct
Dia.
CR
Damper
3 x
Airflow
Duct
Dia.
Duct Collar / Grille