IMPORTANT INSTRUCTIONS READ AND SAVE THESE INSTRUCTIONS Saving energy and creating healthy, comfortable environments ANSI/NSF 37 Air Curtain Fans for Customer Entry 12CS Installation & Maintenance Instructions TABLE OF CONTENTS WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY TO PERSONS, OBSERVE THE FOLLOWING: A. Use this unit only in the manner intended by the manufacturer. If you have any questions, contact the manufacturer. B. Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel. C. Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction. D. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to prevent back drafting. Follow the heating equipment manufacturer’s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and local code authorities. E. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. -1-

Carefully examine the carton(s) for damage before opening. If the carton is damaged, immediately notify shipping company. If the unit(s) were shipped on wooden skids, remove protective wood and banding straps securing the carton(s) to the skid. Open the carton(s) and remove all protective packaging. Remove the plastic cover housing by lifting vertically. Remove and discard four (4) nuts and washers holding the motor/blower section to the bottom of the carton. Remove motor/blower section from the carton. CAUTION: ONLY LIFT THE UNIT BY GRASPING INLET RINGS ON THE BLOWER HOUSING WITHOUT TOUCHING...

FIGURE 3 - Positioning of Mounting Plate D. Anchor the wall mounting plate over the door opening with the mounting tabs pointing upwards. E. Raise the unit over the door (air discharge nozzle facing down) and on to the mounting plate. First, tilt the unit upward matching the holes in the frame with the tabs on the mounting plate. See FIGURE 4. F. Lower the unit into place allowing it to rest on the mounting plate. The unit flange should rest above the mounting plate flange. G. After the unit is securely seated to the mounting plate, install the locking screws along the bottom flange. See FIGURE...

to connect electrical conduit. Connect all supply and control circuit wires according to the wiring diagram. E. Reinstall the wiring compartment cover. F. Switch on the power at the service disconnect. Turn on the unit and check the sequence of operation against the wiring diagram. G. Proceed to Section VI-AIRFLOW ADJUSTMENTS. VI. AIRFLOW ADJUSTMENTS A. Air Stream Split Adjustment 1. With the air door operating and the door in its full open position, check to see that nothing is obstructing the air flow at the discharge nozzle vanes. 2. Find the air stream split location. Hold a handkerchief,...

Berner air doors require very little servicing. All parts are easily accessible for periodic inspection and maintenance. Units should be cleaned at least twice a year. Your particular application (the amount of dirt and dust in the air) and location of the unit(s) will determine how often your unit(s) will need to be cleaned and serviced. All motors have permanently lubricated, sealed, sleeve bearings and require no maintenance. A. Unit Mounted Rotary Switch Removal The variable speed switch must be removed from the bottom of the unit. 1. Disconnect power to the unit. 2. Remove the intake grille...

X. WARRANTY Berner International Corp. ("The Company") warrants all new equipment to be free of defects in workmanship and material for a period of five years (5 years) on unheated models and two years (2 years) on heated models from the original date of shipment, provided the equipment has been properly cared for, installed and operated in accordance with the limits specified on the nameplate and The Company’s instructions. The Company will correct by repair or replacement, at its option and expense, any proven defects in said apparatus, subject to the above conditions, provided that immediate...