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IMPORTANT INSTRUCTIONS
Saving energy and creating healthy, comfortable environments
READ AND SAVE
THESE INSTRUCTIONS
No. II-480
Date July, 2015
SANITATION
CERTIFIED
Low Prole 7
AIR CURTAIN SERIES SLC07
for outdoor use
SLC07
ANSI/NSF 37
Air Curtain Fans
for Customer Entry
max.mounting
height is 7’
SLC07
COMMERCIAL
Low Prole 8
AIR CURTAIN SERIES CLC08
Installation & Maintenance Instructions
TABLE OF CONTENTS
I. UNCRATING............................................................................................................................................................. 2
II. MOUNTING INSTRUCTIONS................................................................................................................................ 2
III. WALL MOUNTING................................................................................................................................................ 2
IV. SUSPENDED MOUNTING.................................................................................................................................... 3
V. ELECTRICAL CONNECTIONS .............................................................................................................................. 3
VI. MECHANICAL CONNECTIONS .......................................................................................................................... 5
VII. AIRFLOW ADJUSTMENTS ................................................................................................................................. 5
VIII. MAINTENANCE AND CLEANING .................................................................................................................... 6
IX. SERVICE ................................................................................................................................................................ 6
X. TROUBLESHOOTING ............................................................................................................................................ 7
XI. WARRANTY .......................................................................................................................................................... 8
WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
A. Read all instructions before installing or using this air curtain.
B. Use this unit only in the manner intended by the manufacturer and described in this manual. Any other use not recommended by the manufacturer may cause re, electric shock,
or injury to persons. If you have any questions, contact the manufacturer.
C. Before servicing or cleaning unit, switch power o 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.
D. Installation work and electrical wiring must be done by qualied person(s) in accordance with all applicable national and local codes having jurisdiction, including re-rated
construction. See page 3, ELECTRICAL CONNECTIONS (NEC Code ANSI/NFPA No. 70).
E. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
F. To reduce the risk of re, do not store or use gasoline or other ammable vapors and liquids in the vicinity of the air curtain.
G. This air curtain is hot when in use. To avoid burns, do not let bare skin touch hot surfaces. Keep combustible materials, such as furniture, pillows, bedding, papers, clothes, etc. and
curtains at least 1 inch from the top, back, front, sides and at least 6 feet from the discharge of the air curtain.
H. Extreme caution is necessary when any air curtain is used by or near children or invalids, and whenever the heater is left operating unattended.
I. Do not operate any air curtain after it malfunctions. Disconnect power at the service panel and have the air curtain inspected by a reputable electrician before reusing.
J. To disconnect the air curtain, turn controls to “o”, and turn o power to the air curtain circuit at main disconnect panel.
K. Do not insert or allow foreign objects to enter any ventilation or discharge opening as this may cause an electric shock or re, or damage the air curtain.
L. To prevent a possible re, do not block the air intake or discharge of the air curtain in any manner.
M. The air curtain has hot and arcing or sparking parts inside. Do not use it in areas where gasoline, paint, or ammable vapors or liquids are used or stored.
N. This heater may include an audible or visual alarm to warn that parts of the heater are getting excessively hot. If the alarm sounds (or illuminates), immediately turn the heater
o and inspect for any objects on or adjacent to the heater that may have blocked the airow or otherwise caused high temperatures to have occurred.
DO NOT OPERATE THE HEATER WITH THE ALARM SOUNDING (OR ILLUMINATING).
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I. UNCRATING THE AIR CURTAIN UNIT
Carefully examine the carton(s) for damage before opening. If the carton
is damaged, immediately notify the 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 BLOWER WHEELS.
Immediately verify that the electrical rating nameplate located on the
cover matches electrical power supply available. Retain the shipping
carton(s) until the unit(s) are installed and properly operating.
ACCESSORIES: If the unit(s) were ordered with optional electrical accessories (door switch, control panel, etc.), the accessories may be found in
the carton containing the unit or in a separate carton(s) accompanying
the unit(s). Check all of the cartons/skids for accessories before discarding.
II. MOUNTING INSTRUCTIONS (General)
The Certied Low Prole 7/Commercial Low Prole 8 air curtain
is designed to be an eective barrier against cold drafts in the
winter and hot air in the summer, ying insects and airborne
contaminants. To achieve optimum protection, the unit should
be mounted on the inside of the building, ush to the wall and as
close to the top of the door opening as possible. To ensure peak
performance, keep air stream free of obstructions.
The air curtain will not perform properly if negative air pressure exists in the building. Under these conditions, a means
for make-up air to the building must be provided so that the
air pressure on both sides of the opening is in balance.
1” minimum
1” minimum
side clearance from
combustible materials.
Discharge
Nozzle
20˚
AIR
6' minimum*
Net Weight (lbs)
MODEL
SLC07
Ambient
CLC08
Ambient
CLC08
Electric
CLC08
St/Hw
SLC07-1036, CLC08-1036 35 41 48 67
SLC07-1042, CLC08-1042 38 45 53 74
SLC07-1048, CLC08-1048 42 48 58 80
SLC07-1060, CLC08-1060 49 56 67 94
SLC07-1072, CLC08-1072 56 64 77 107
SLC07-2084, CLC08-2084 76 90 105 138
SLC07-2096, CLC08-2096 84 98 115 152
SLC07-2108, CLC08-2108 91 105 123 164
SLC07-2120, CLC08-2120 98 113 137 177
TABLE 1 - Weight Chart
Before mounting the unit, check the supporting structure to verify
that it has sucient load-carrying capacity to support the weight
of the unit(s). The mounting hardware (supplied by others) should
be capable of supporting a minimum of three (3) times the weight
of the unit. See TABLE 1.
A. When determining the mounting location for the unit(s), make
sure that nothing interferes with the curtain of air developed
when the discharge vanes are directed from 0° to 20° toward
the door opening. If the air stream strikes any obstruction
(the top edge of the doorway, a door opening device, etc.),
the eectiveness of the unit will be greatly reduced.
See FIGURE 1.
B. For optimum performance, the bottom of the unit (discharge
nozzle) should be no more than 1” above the top of the door
opening with the unit mounted ush to the wall. If the unit
must be mounted higher, it must be spaced out from the wall
3
/8” for every inch the unit is above the door opening. Any
void between the air curtain and the wall should be sealed
along the full length of the unit. See FIGURE 2.
C. Proceed to: Section III-WALL MOUNTING or
Section IV-SUSPENDED MOUNTING
Flush Mounting
Spacer
Seal
AIR
CURTAIN
1" max.
Top of Doorway
FIGURE 2 - Positioning of Air Curtain
AIR
CURTAIN
Spacer
3/8"
3/4"
3"
2"
EXTERIOR
*Electrically Heated Units Only
FIGURE 1 - Air Stream
INTERIOR
R
A
I
I
A
R
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Recommended Mounting
Plate Holes
Doorway Opening
1" max.
Doorway
Opening
FIGURE 3 - Positioning of Mounting Plate
III. WALL MOUNTING
A. Determine the location on the wall above the opening where
the air curtain will be mounted. This location should center
the unit over the opening and provide suitable mounting
support. It is recommended to use at least four locations that
correspond to the outer corners of the wall mounting plate.
See FIGURE 3.
B. Prepare the wall as necessary for the wall mounting
plate anchors (by others).
C. Drill holes in the wall mounting plate to correspond to the
locations on the wall.
D. Anchor the wall mounting plate over the door opening with
the mounting tabs pointing upwards.
E. Raise the unit over the door (air nozzle facing down) and onto
the mounting plate. 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 ange should rest above the mounting plate
ange.
G. After the unit is securely seated to the mounting plate, install
the locking screws along the bottom ange. See FIGURE 4.
H. Proceed to Section V-ELECTRICAL CONNECTIONS
Mounting Plate
Lower Lip
Locking Screws
FIGURE 4 - Attaching Unit to Mounting Plate
IV. SUSPENDED MOUNTING
(Ceiling Suspension)
A. When the unit is top mounted, the wall mounting plate is
designed to store on the back of unit for future use.
B. Four (4) factory installed #10-24 threaded inserts are located
on the top of the unit for top suspension mounting.
See FIGURE 5.
C. Determine the exact mounting location of the air curtain.
D. The top of the unit is provided with an electrical knockout
for power connection. Remove the wiring tray compartment
cover. Remove the knockout and attach necessary electrical
hardware. Save the wiring diagram found inside of wiring
tray.
E. Attach #10-24 threaded rods, or other suitable hardware to
the top mounted threaded inserts.
F. Proceed to Section V-ELECTRICAL CONNECTIONS
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Suspension Rods
10-24 Threaded Insert
Side View
FIGURE 5 - Suspended Mounting
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V. ELECTRICAL CONNECTIONS
All electrical wiring and connections MUST be performed by
qualied personnel in accordance with the National Electrical Code ANSI/NFPA No. 70 (latest edition) or, in Canada, the
Canadian Electrical Code, Part 1-C.S.A. Standard C22.1 and local
codes and regulations.
A. Check the electrical rating nameplate on the top of the
air curtain for supply voltage and current requirements.
A separate line voltage supply with a suitable branch
circuit protection device should be run directly from the
main electrical panel to the air curtain. A disconnect switch
for each branch circuit is a required part of this installation.
B. All eld wiring must be copper with a minimum insulation
of 60° C within approved conduit. If any of the wire
supplied with the air curtain must be replaced, it must be
replaced with copper wiring with a minimum insulation of
90° C.
C. Remove the wiring tray cover; on air curtains that are
comprised of modules, remove the wiring tray cover that is
located closest to the electrical rating nameplate (if it has
not already been done). See FIGURE 6.
D. The top of the air curtain has two knockouts on each side
of the air curtain, allowing for a left hand or right hand
power connection. Remove the required knockout if it has
not already been done and connect the power supply to
the air curtain. Connect all supply and control circuit wires
according to the wiring diagram provided.
NOTE: For Electrically Heated air curtain(s) provided
with the optional remote thermostat: mount and wire
the thermostat according to instructions and wiring
diagram.
Wiring
Compartment
Cover
½" Knockout
FIGURE 6 - Electrical Connections
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VI. MECHANICAL CONNECTIONS
A. ELECTRICALLY HEATED MODELS
The heater circuit may be controlled by a combination of
a remote thermostat and the fan/o/fan & heat rocker
switch. Overheating protection is provided by auto reset
thermal cutouts built into the heater coil assembly
(see the wiring diagram, located in wiring tray).
B. STEAM OR HOT WATER HEATED MODELS
Piping should be done in accordance with local
codes, regulations and standard practices.
Connect the building system supply and return to
the ¾” MPT nipples on the heating coil. See FIGURE 7.
VII. OPERATING INSTRUCTIONS
A. GENERAL OPERATION
1. The air curtain can be directly operated by using the rocker
switches located on the bottom of the unit. The air curtain
may also be automatically operated by a combination of the
rocker switches and a remote door switch and/or thermostat
(See the wiring diagram).
2. Rocker switch positions are labeled on the air curtain
cabinet.
3. Unheated units have one rocker switch that turns the
unit on or o. The other rocker switch selects fan speed.
4. Heated units have one rocker switch that determines
whether the unit is o, energizes only the fans, or
energizes both the fans and the method of heat.
The other rocker switch selects fan speed.
B. AIR STREAM SPLIT ADJUSTMENT
1. With the air curtain operating and the door in its full open
position, check to see that nothing is obstructing the air
ow at the discharge nozzle vanes.
2. Find the air stream split location. Hold a handkerchief, by
its corners, approximately 12” above the oor. Gently move
the handkerchief back and forth in the doorway. Make sure
the air is being directed to both the inside and the outside.
The split location is indicated where the handkerchief is
vertical with minimal or no uttering. See FIGURE 8.
3. Adjust the discharge nozzle vanes so the split location is ap-
proximately 3” outside the doorway. This is accomplished
by rst de-energizing the unit. Remove the cover housing,
loosen the nozzle vane locking screws and adjust vanes.
FIGURE 7 - Steam/Hot Water Connections
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FIGURE 8 - Air Flow Adjustment
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VIII. MAINTENANCE AND CLEANING
CAUTION: ELECTRIC SHOCK HAZARD Disconnect power
whenever servicing air curtain unit. More than one disconnect may be required to de-energize air curtain unit.
Keep your air curtain operating at peak eciency by cleaning
the blower wheels, motor(s) and intake grille. Buildup of dust
on the blower wheels can cause vibration, noise and excessive
wear on the motor bearings. The frequency of cleaning will
depend on the environment in which the unit is operating.
Dirty, dusty or greasy environments could require a cleaning
schedule of once every two months. If the environment is
not that dirty, the unit(s) should be scheduled for cleaning a
minimum of once every (6) months. To access the interior of
the unit:
A. Disconnect the power to the unit.
B. Remove the intake grille by removing all phillips head screws
around edge. See FIGURE 9.
C. Vacuum and scrape (if necessary) to remove the buildup of
dirt and debris. The motor(s) are permanently lubricated and
require no additional lubrication. Reinstall the cover and intake
grille.
D. Reconnect the power, and turn on after cleaning. CAUTION:
STAND CLEAR OF THE UNIT OR WEAR SAFETY GOGGLES AS
LOOSE DEBRIS MAY BE PRESENT AND MAY EXIT THROUGH
THE NOZZLE.
Wiring
Compartment
Cover
½" Knockout
Intake Grill
FIGURE 9
IX. SERVICE
CAUTION: ELECTRIC SHOCK HAZARD Disconnect power
whenever servicing air curtain unit. More than one discon-
nect may be required to de-energize unit.
Any service performed on the Certied Low Prole7/Commercial
Low Prole 8 air
curtain MUST be done by qualied personnel.
Berner air curtains 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 lu-
bricated, sealed, sleeve bearings and require no maintenance.
A. FAN AND MOTOR REMOVAL
1. Disconnect power to the unit.
2. Remove the intake grille by removing all phillips head
screws around edge. See FIGURE 9.
3. Unplug motor harness from motor and remove necessary
wiring.
4. Using a 1/8” Allen wrench, loosen each set screw attaching
fan(s) to motor.
5. While holding the motor in place, loosen and remove
the motor clips.
6. Slide the fans toward the motor so that the ball bearings
on the outer fan shaft are exposed.
7. Slowly roll the motor out of the motor mount cradle for-
ward and down. The hubs of the fans are exible enough
to allow the motor to move before the fans’ outer ball
bearings pull out of the unit.
8. Reinstall in reverse order of removal.
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X. TROUBLESHOOTING
SYMPTOMS
NO AIR
MINIMUM AIR
AIR IS NOT HITTING
FLOOR
UNEVEN AIR
CAUSE
• Electrical Power supply line open (no
power)
• Fuse blown/circuit breaker tripped
• Motor overload tripped
• Failed switch
MOTOR RUNNING/FANS ARE NOT ROTATING
• Broken fan hub
• Shaft rotating inside fan
• Broken / Loose coupling
ELECTRICAL CONTROLS NOT FUNCTIONING WHEN DOOR IS OPEN
• Selector switch is in "OFF" position
• Door limit switch not operating
• Air directional discharge vanes misadjusted
• Inadequate intake clearance
• Blower motor operates below speed
• Fan rubbing against housing
• Fan wheels clogged with dirt
• Air stream too weak
• Air steam hits obstruction
• Negative pressure
• Shaft rotating inside fan
• Check power source, check method of control
is in "ON" position
• Replace fuse(s)/reset breaker
• Internally protected motor - should reset automatically after cool-down, if not, replace motor.
• Replace switch
• Replace fan
• Tighten set screws/tighten fan on shaft
• Replace / Tighten coupling
• Turn switch to “ON” position
• Repair or replace limit switch
•
Adjust vanes to proper position; see
instructions
• Move air curtain or remove obstruction
Provide adequate space for air curtain
• Improper voltage
• Free fan from housing
• Clean and vacuum fan wheels
• Adjust nozzle to proper position, adjust motor
speed; see installation instructions
• Remove obstruction or reposition air curtain
(move out 3/8” for every 1” up from the door)
• Relieve negative pressure by providing
makeup air
• Tighten set screws/Replace fan
REMEDY
installation
EXCESSIVE AIR
MOVEMENT AT
DOORWAY
• Nozzle not angled out far enough
• Air movement too cold
• Pushing air outside building
SEE: AIR IS NOT HITTING FLOOR
• Adjust nozzle angle to outside
• Add auxiliary heat to overcome wind chill
• Adjust nozzle angle towards door threshold
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XI. WARRANTY
Berner International Corp. "The Company" warrants all new equipment to be free of defects in workmanship and material for a period
of ve 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 specied 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 written notice of such defects is given to The Company. The warranty does not include
any labor incurred for the removal or installation of defective part(s). The Company reserves the right to inspect, or have inspected by
a qualied representative, any apparatus at the place of installation before authorizing repair or replacement. Repair or replacement
will be made F.O.B. factory with any applicable transportation charges to be borne by the customer. Merchandise not of The
Company’s manufacture supplied in piece, or in component assemblies, is not covered by the above warranty, but The Company will
give the customer the benet of any adjustment as made with the Manufacturer.
This warranty is void if the apparatus has been tampered with in any way or shows evidence of misuse.
The Company will not assume any expense or liability for repairs made outside its factory without proper written consent from
its service manager, nor for any transportation charges on apparatus returned to the factory without written authorization by The
Company.
Nothing in the above warranty provisions, however, shall impose any liability or obligation of any type, nature or description upon
Berner International if Berner has not received payment in full for the apparatus in question.
THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HERE OF INCLUDING
THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
LIMITATION OF DAMAGES
Notwithstanding anything to the contrary above, customer’s exclusive remedy for any and all losses or damages resulting
from the sale of The Company’s equipment under this agreement, including but not limited to, any allegations of breach
of warranty, breach of contract, negligence or strict liability, shall be limited, at The Company’s option, to either the return
of the purchase price or the replacement of the particular equipment for which a claim is made and proved. In no event
shall The Company be liable for any special, consequential, incidental or indirect losses or damages from the sale of The
Company’s equipment under this agreement.
SERIAL NUMBER MODEL NUMBER DATE PURCHASED
Saving energy and creating healthy, comfortable environments
BERNER INTERNATIONAL CORPORATION
New Castle, Pennsylvania
724-658-3551 • 1-800-245-4455 • www.berner.com • [email protected]
Berner reserves the right to alter specifications without prior notice.
© Copyright 2015 Berner International Corporation MADE IN U.S.A.
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