Berner ALC08-1036 Installation Manual

IMPORTANT INSTRUCTIONS

READ AND SAVE
THESE INSTRUCTIONS

Saving energy and creating healthy, comfortable environments

No. II-470
Date July, 2015

ARCHITECTURAL

Low Prole 8

FDA

RECOMMENDED

USDA

COMPLIANCE

AIR CURTAIN SERIES ALC08

Installation & Maintenance Instructions

TABLE OF CONTENTS

I. UNCRATING.......................................................................................................................................................................................................... 2

II. GENERAL MOUNTING INSTRUCTIONS ...........................................................................................................................................................2

III. WALL MOUNTING .............................................................................................................................................................................................2

IV. SUSPENDED MOUNTING ................................................................................................................................................................................ 3

V. ELECTRICAL CONNECTIONS ........................................................................................................................................................................ ....4

VI. FIELD CONNECTIONS ......................................................................................................................................................................................6

VII. OPERATION INSTRUCTIONS ......................................................................................................................................................................... 6

VIII. MAINTENANCE AND CLEANING ................................................................................................................................................................. 7

IX. SERVICE ............................................................................................................................................................................................................ 7

INTELLISWITCH®...................................................................................................................................................................................................10

QUICK START OPERATION.......................................................................................................................................................................... .10

FAQ’s (FREQUENTLY ASKED QUESTIONS)................................................................................................................................................ 12

THE INTELLISWITCH® PROGRAMMING)....................................................................................................................................................14

X. TROUBLESHOOTING........................................................................................................................................................................................19

XI. WARRANTY ......................................................................................................................................................................................................20

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 qualied person(s) in accordance with all applicable national and local codes
having jurisdiction, including re-rated construction. See page 4, 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 airow or

otherwise caused high temperatures to have occurred. DO NOT OPERATE THE HEATER WITH THE ALARM SOUNDING (OR ILLUMINATING).

www.intelli-how2.com 800-245-4455 www.berner.com

I. UNCRATING

6’ minimum*
8’ maximum

20°

1" minimum

AIR

Discharge
Nozzle

1" minimum

side clearance

from combustible

material*

A

I

R

A

I

R

*Electrically Heated Units Only

INTERIOR

EXTERIOR

Carefully examine the carton(s) for damage. If the carton is
damaged, immediately notify the shipping company. Do not
delay in ling claim. If the air curtain(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. Immediately verify that the electrical
rating nameplate located on the cover matches electrical power
supply available. Retain the shipping carton(s) until the air
curtain(s) are installed and properly operating.
ACCESSORIES: If the air curtain(s) were ordered with optional
electrical accessories, the accessories will be found in the carton
containing the air curtain or in a separate carton(s) accompany­ing the air curtain(s). Check all of the cartons/skids for accesso­ries before discarding.

II. MOUNTING INSTRUCTIONS

(General)

INDOOR MOUNTING ONLY - Environmental/Insect/Dust Control
The Architectural Low Prole 8 Air curtain is designed to be an eec­tive barrier against cold drafts in the winter and hot air in the summer.
To achieve optimum protection, the air curtain 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 the
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 makeup
air to the building must be provided so that the air pressure on
both sides of the opening is in balance.

Before mounting the air curtain, check the supporting structure to veri­fy that it has sucient load-carrying capacity to support the weight of
the air curtain(s). The mounting hardware (supplied by others) should
be capable of supporting a minimum of three (3) times the weight of
the air curtain.

See Table 1.

If the air stream strikes any obstruction (the top edge
of the doorway, a door opening device, etc.), the
eectiveness of the air curtain will be greatly reduced.
See Figure 1.
B. For optimum performance, the bottom of the air curtain
(discharge nozzle) should be no more than 1” above
the top of the door opening with the air curtain(s)
mounted ush to the wall. If the air curtain must be
mounted higher, it must be spaced out from the
wall ³/₈” for every inch the air curtain is above the door
opening. See Figure 3. For optimum protection, any void
between the air curtain and the wall should be sealed
along the full length of the air curtain.
C. Electric heated air curtain(s) shall:

1. Have a minimum clearance of at least 1”
between the sides and top of the air curtain and
any combustible material.

2. Have a minimum clearance of at least 6’
between the bottom of the air curtain and the oor.

3. Be installed Indoors Only.
D. Proceed to either Section III - WALL MOUNTING
or Section IV - SUSPENDED MOUNTING

III. WALL MOUNTING

A. The Architectural Low Prole 8 Air curtain is equipped with
two ¼” threaded inserts on the back of each air curtain (two
per module on air curtains 84” and over). Insert and
tighten the shoulder bolts (provided in bag taped to the
wall plate) into these threaded inserts. A minimum of two
shoulder bolts are required; on air curtains comprised of
modules, use the outer threaded inserts and a minimum of
one of the inner threaded inserts.

IMPORTANT: A minimum of 1” is required above the top of the
air curtain for the installation and removal of the cover housing.
A. When determining the mounting location for the
air curtain(s), make sure that nothing interferes with the
curtain of air developed when the discharge vanes
are directed from 0º to 20º toward the door opening.

Net Weight

MODEL

Ambient (lbs)

Net Weight

Electric (lbs)

ALC08-1030 33 39 56

ALC08-1036 38 44 64

ALC08-1042 43 49 72

ALC08-1048 48 54 80

ALC08-1060 57 63 95

ALC08-1072 64 70 107

ALC08-2084 86 98 134

ALC08-2096 96 108 150

ALC08-2120 114 126 178

TABLE 1 - Unit Weight

Net Weight

Steam/Hot

Water (lbs)

FIGURE 1 - Mounting Location

2

B. Determine the exact mounting location of the air curtain.

3

/8" Spacers

(for each inch over 4")

Wall Mounting
Plate

Discharge Nozzle

AIR

AIR

NO Obstructions

in Air Stream

Clearance Height

NOTE: A minimum of 1” is required above
the wall mounting plate to provide clearance
for installation and removal of the air curtain.

C. Remove the wall mounting plate from the unit to install.
The wall mounting plate (included) is designed to t ush
with the top of the Architectural Low Prole 8 Air curtain.
Therefore the location of the wall mounting plate will
determine the nal location of the top of the air curtain.
D. For Standard Flush Wall Mounting, position the center of
the wall mounting plate over the center of the door open
ing with the larger opening of the key hole slots facing up.
The wall mounting plate thickness provides a natural ¾”
space which allows for mounting it up to 4” above the
opening. For optimum performance, the bottom of the
mounting plate should be no more than 2” or less than
1” above the top of the door opening.
See Figure 2.
High Wall Mounting must be used if the wall mounting
plate must be mounted higher than 4” above the
door opening: the mounting plate must be spaced out
from the wall ³/₈ ” for every additional inch (over 4”)
that the air curtain is above the door opening (clearance
height). See Figure 3. For optimum protection, do not
exceed the recommended maximum mounting height of
8’ above the nished oor. Any void between the mount
ing plate and the wall should be sealed along the full
length of the mounting plate.
E. Determine which of the four holes provided in each of
the steel brackets of the wall mounting plate are located
where suitable support is available for the air curtain.
A minimum of one inside hole and one outside hole from

FIGURE 3 - High Wall Mounting

that are comprised of modules, remove the wiring tray
cover that is located closest to the electrical rating
nameplate. Remove the required knockouts and
attach the necessary electrical hardware. Save the wiring
diagram found inside of the wiring tray. See Figure 7.
I. There are two sets of keyhole slots on the wall mounting
plate. In low overhead installations, the air curtain may be

staged in the lower keyholes to provide clearance for
electrical wiring and then moved to the higher key holes
after completion. Raise the air curtain with the discharge

opening facing down toward the oor. While
holding the air curtain level, slide the heads of the
shoulder bolts into the larger hole of the keyhole
slots of the mounting plate. Lower the air curtain
into place, keeping both ends level, allowing it to rest ush
with the mounting plate. See Figure 4.
J. After attaching the air curtain to the mounting plate,
ensure that the air curtain is seated and ush with the
mounting plate on all four sides.
K. Proceed to Section V - Electrical Connections.

FIGURE 2 - Standard Flush Wall Mounting

each bracket must be used for proper support.
Drill out the aluminum backing of the holes chosen
with a ¼” drill bit. If the provided holes on the
mounting plate are not located where suitable support
is available, drill new holes in the space provided on
the steel mounting brackets.
F. Mark the wall in the centers of the ¼” holes drilled on the
mounting plate.
G. Attach the mounting plate to the wall (hardware by others).
H. The top of the air curtain is provided with two knockouts
on each side allowing for a left or right hand power
connection. Remove the wiring tray cover; on air curtains

IV. SUSPENDED MOUNTING

(Ceiling Suspension)
A. When the air curtain is top mounted, the wall mounting
plate is designed to store on the back of the air curtain for
future use. See Figure 5.
B. Four (4) factory installed ¼” threaded inserts are located
on the top of the air curtain for top suspension mounting;
on air curtains comprised of modules use the
outer threaded inserts.
To eliminate the slight deection of longer air curtains, the
inner threaded inserts may also be used. See Figure 6.
C. Determine the exact mounting location of the air curtain.
D. The top of the air curtain is provided with two knock­ outs on each side allowing for a left or right hand
power connection. 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. Remove the required
knockouts and attach the necessary electrical hardware.
Save the wiring diagram found inside of the wiring tray.
See Figure 7.
E. Attach ¼” threaded rods or other suitable hardware to the
top mounted threaded inserts.

3

FIGURE 4 - Installing Air Door on Wall Mounting Plate
F. Proceed to Section V - Electrical Connections.

V. ELECTRICAL CONNECTIONS

All electrical wiring and connections MUST be performed by
qualied 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.

FIGURE 5 - Wall Mounting Plate Storage

A. Check the rating nameplate on the top of the air curtain for
supply voltage and current requirements. See Figure 7.
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).
D. Electric, steam and hot water heated air curtains are factory
equipped with a air curtain mounted solid state
temperature sensor cable (for the Intelliswitch thermostat)
located in the wiring tray. Depending where the tempera
ture is to be measured, the sensor may be left in the wiring

FIGURE 6 - Suspended Mounting

tray or it may be located outside of the air curtain. If the air
curtain is unheated, or the sensor will be left in the wiring
tray, skip to step E, otherwise continue.

1. Remove the ½” bushing taped to the back of the
wiring tray cover and set aside.

2. Determine mounting location of the temperature
sensor (do not mount at this time).

3. Choose end of the wiring tray that the sensor will exit
the air curtain based on the mounting location from

Step 2.

4. Locate the /” hole on the wiring tray next to
the electrical knockout on the side determined in
Step 3.

5. Drill out the /” hole to ½”.
CAUTION: DO NOT DAMAGE EXISTING WIRES IN

THE WIRING TRAY WHEN DRILLING.

6. Maneuver the tip of the temperature sensor from
the inside of the wiring tray out through ½” hole.

7. Thread the tip through ½” bushing from Step 1 and
snap the bushing into the wiring tray.

8. Mount the temperature sensor. Do not put any clamps
on the rubber coated tip.
E. 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 Electric heated air curtains provided with the
optional remote thermostat, mount and wire the
thermostat according to instructions and wiring
diagram.

F. Master/Slave connection, if two or more units are to be

linked together for master/Slave operation continue, other­wise skip to step G.

4

Electrical Knockouts

Wiring Tray Cover

Electrical Rating

Nameplate

Wiring Diagram and

Temperature Sensor

Inside

FIGURE 7 - Electrical Connections

NOTE: One Intelliswitch serial cable assembly (part #

505SC***INT485-A) is required for every unit that is to
be used as a master/slave. “***” denotes length of cable
in feet- “008” = 8 feet long.

For Master/Slave operation, a serial cable connection must

be made between the INTELLISWITCH GEN2 control boards
of each unit to be linked.

1. Disconnect power to all the units.

2. Access the wiring tray on top of each unit by removing
the screws that hold the cover in place.

3. Find the (RS485) phone jack couplers in the wiring
trays. There will be two short cables in the wiring
tray of each air curtain, each with a double ended
female phone jack coupler attached to the cable.

4. The serial cable ordered for each unit will be coiled up
in the wiring tray of the unit and connected to one of
the couplers.

Note: There may be one less serial cable than the

number of units ordered. e.g. Two units together will
need only one cable; three units together will need two
cables, etc. Any extra cables can be kept as spares.

5. Use one of the extra electrical knockouts to route serial
cable from one unit to the next. Be sure to protect the
edge of the knockout properly.

6. Plug (RS485) male phone jack on the end of the serial
cable into the empty coupler on the next unit.

7. Continue process for all units that are to be connected
serially.

8. Serial cable connections are capable of two way com
munication. It does not matter which coupler the
cables are connected to.

9. The rst and last air curtains in the group will each
have an empty coupler after all connections are made.
So if there are only two air curtains connected, each
will have an empty cable coupler.

Note: If a longer cable is required than was supplied,

it can be ordered from the factory or made by using
standard at telephone cable, phone jack connectors
and the proper crimping tool.

G. Remote mounted Display Faceplate - if operation of the

Intelliswitch is desired through a remote mounted display
face plate continue, otherwise skip to step H.

NOTE: Maximum mounting distance between the Dis-

play Faceplate and the unit is 20’.

The unit MUST be factory ordered with the remote
mounted faceplate option.

1. When the remote faceplate option is ordered
from the factory the air curtain comes equipped with

the blank faceplate and 12’ ribbon attached. The
Diplay Faceplate is shipped loose ready for eld

installation.

2. Locate the male end of the 14-conductor ribbon cable
in the wiring tray and run to the remote display loca
tion. The cable is minimum CL2 rated and should not
need to be in conduit.

3. Connect the ribbon cable to the 14-pin socket with red
stripe positioned on the top left when facing the front
of the display board.

4. Mount remote faceplate to the wall.

H. Reinstall the wiring tray cover.
I. For Electric, Steam and Hot Water air curtains proceed to
Section VI - Field Connections otherwise proceed to
Section VII - Operation and Controls.

VI. FIELD CONNECTIONS

A. ELECTRICALLY HEATED MODELS

The heater circuit may be controlled by a remote
thermostat or manually through the Intelliswitch located
on the discharge side of the air curtain. Overheating
protection is provided by auto reset thermal
cutouts built into the heater coil assembly
(see the wiring diagram).

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 8.

FIGURE 8 - Steam/Hot Water Connections

5

VII. OPERATING INSTRUCTIONS

A. GENERAL OPERATION

Air curtain operation may be divided into four areas:
control package, fan activation, fan speed selection,
and heat activation. The air curtain must be properly
installed before it is used.

1. Control packages control the unit’s sequence of operation.
Unit modes/control packages are built into the unit and may
not be changed in the eld.. Refer to your wiring diagram
for specics about activation connections and sequence of
operation.
a. Basic Control Package – The unit is activated by a door
switch. The door switch may be line voltage or low
voltage (24V).
b. Deluxe Control Package – The unit is activated by a door
switch, but has a factory installed time delay allowing
the unit to keep running for a period of time after the
door closes.
c. Comfort Plus Control Package – Available only on heated
units, the unit is activated by the door switch OR by the
thermostat to provide supplemental heating.

2. Unheated units will have the fans activated by a door switch
or sensor. The unit speed can be selected from the

Intelliswitch display.

FIGURE 9 - Airow Adjustment

3. Heated units will have fans activated by a door switch or
sensor, but may also be activated by the thermostat in
Comfort Plus Mode. The unit speed can be selected from the
Intelliswitch display.

4. Heat activation is controlled by either a unit or remote
mounted thermostat, and a unit or remote mounted switch.

B. AIR STREAM 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.
See Figure 9. The split location is indicated where the
handkerchief is vertical with minimal or no uttering.

3. The split location should be approximately 3” outside the
doorway. If necessary adjust the discharge nozzle vanes by
de-energizing the unit, loosening the nozzle vane locking
screws and adjusting vanes.

6

VIII. MAINTENANCE AND CLEANING

CAUTION: ELECTRIC SHOCK HAZARD Disconnect power

whenever servicing unit. More than one disconnect may
be required to de-energize unit.

Keep your air door operating at peak eciency 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 where the unit is operating.

Dirty, dusty or greasy environments could require a

cleaning schedule of once every two months. If the envi-

ronment 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; remove the intake grille by

removing the locking screws on each end of the unit. Lift the
intake grille up and then towards you. See Figure 10.

B. Remove the bottom access panel by removing the phillips

head screws on the bottom of the unit.

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. Switch the power on after cleaning, reinstalling the cover and

intake grille.

CAUTION: STAND CLEAR OF THE UNIT OR WEAR SAFETY

GOGGLES AS LOOSE DEBRIS MAY BE PRESENT AND MAY
EXIT THE NOZZLE.

IX. SERVICE

CAUTION: ELECTRIC SHOCK HAZARD Disconnect power

whenever servicing unit. More than one disconnect may
be required to de-energize unit.

Any service performed on the Architectural Low Prole 8 air door

MUST be done by qualied personnel.

Berner air doors require very little servicing. All parts are eas-

ily 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.

See Figure 11

FIGURE 11 - Unit Components

FIGURE 10- Intake Grill Removal

7

A. INTELLISWITCH DISPLAY BOARD REMOVAL
OR REPLACEMENT
CAUTION: Do not expose the bare board to static electricity,

water, extreme heat or extreme moisture.

1. Set Intelliswitch mode to o.

2. Disconnect power to the unit.

3. Remove the two Phillips head screws from the

Intelliswitch display faceplate.

4. Remove the faceplate from the unit by gently pulling it

away from the unit and unplugging the ribbon
cable from the back.

5. Flip the faceplate over and place it on a clean soft

surface.

6. Remove the two nuts, aluminum shield and at

washers holding the display board to the faceplate.

7. Lift display board o of the studs while leaving the

stand o spacers in place.

8. Install new display board onto faceplate studs, reinstall

washers with aluminum shield and attach with existing
nuts.

9. Reinstall display faceplate by attaching the ribbon

cable (with red stripe positioned on the top left) to the
back of display board. Place the face plate against the
mounting bracket, insert and tighten the two Phillips
head screws.

B. INTELLISWITCH CONTROL BOARD REMOVAL OR REPLACE-

MENT

CAUTION: Do not expose the bare board to static electric-

ity, water, extreme heat or extreme moisture.

NOTE: The Intelliswitch Control Board may be removed

without removing the bottom access cover or transverse.
However removal of the bottom access cover and trans­verse will simplify the process.

1. Set Intelliswitch mode to o.

2. Disconnect power to the unit.

3. Remove the two Phillips head screws from the

Intelliswitch display faceplate.

4. Remove the faceplate from the unit by gently pulling it

away from the unit and unplugging the ribbon
cable from the back.

5. Mark and remove all wires connected to the control

board.

6. Remove the two plastic push-rivets that attach the

control board to the unit frame by gently prying
a screw driver under the metal bracket attached to the
control board.

7. Carefully maneuver the control board partially out of

the unit by sliding straight down. Avoid contact

between board components and the motor mount.

8. Remove the Phillips head screw that attaches the

control board to the mounting bracket and ground
wire and completely remove the control board from

the unit.

9. Attach mounting bracket to the new control board

with existing screw only on the side that does not

contain the ground wire.

10. Partially insert the board into the unit and attach the

second Phillips head screw and ground wire.

NOTE: GROUND RING TERMINAL MUST BE SITUATED OR

BEND SUCH THAT IT DOES NOT TOUCH ANY TRACES ON
THE CONTROL BOARD

11. Continue installing the new control board into the unit
by carefully sliding the two tabs at the top of the

control board into the two corresponding slots in the

unit frame. Attach with new plastic push-rivets

provided. Note: when the tabs of the board hit the unit

frame tip the board up and angle the tabs into the slots.

12. Reconnect all wires to the control board.

13. Reinstall display faceplate by attaching the ribbon
cable (with red stripe positioned on the top left) to
the back of display board. Place the face plate against
the mounting bracket, insert and tighten the two

Phillips head screws.

C. INTELLISWITCH SPEED SENSOR REPLACEMENT

1. Set Intelliswitch mode to o.

2. Disconnect power to the unit

3. Remove the intake grille by removing the locking
screws on each end of the unit. Lift the intake grille up
and then away from the unit.

4. Remove the bottom access panel by removing the

Phillips head screws on the bottom of the unit.

5. Remove the two Phillips head screws from the

Intelliswitch display faceplate.

6. Remove the faceplate from the unit by gently pulling it
away from the unit and unplugging the ribbon
cable from the back.

7. Disconnect the speed sensor from the control board by
locating the pin connection marked J5 and
labeled PROXIMITY. Grasp the socket and carefully pull
away from the control board.

8. Remove the 13 mm hex nut and washer closest to the
fan from the sensor.

9. Remove the sensor.

10. Connect the new sensor to the control board; secure all
loose wires from rotating parts.

11. Install new sensor into mounting bracket. Use the
13 mm nuts to position the tip of the sensor a
maximum of 1/16” (2 mm) away from the rotating

trigger located on the motor shaft. When the unit is

energized, the LED on the back of the sensor will illumi
nate when the trigger passes if the correct distance has
been set.

CAUTION: Do not mount the speed sensor too close to

the trigger, the sensor will be ruined if it is struck by the
trigger.

12. Reinstall display faceplate by attaching the ribbon
cable (with red stripe positioned on the top left) to the
back of display board. Place the face plate against the
mounting bracket, insert and tighten the two Phillips
head screws.

13. Reinstall remaining components in reverse order of

removal.

D. INTELLISWITCH SPEED SENSOR ADJUSTMENT

1. Set Intelliswitch mode to o.

2. Disconnect power to the unit

3. Remove the intake grille by removing the

locking screws on each end of the unit. Lift the intake

8

grille up and then away from the unit.

4. Remove the bottom access panel by removing the
Phillips head screws on the bottom of the unit.

5. The speed sensor is held in with two 13 mm hex nuts
and a star washer.

6. Use the 13 mm nuts to position the tip of the sensor a
maximum of 1/16” (2 mm) away from the rotating

trigger located on the motor shaft. When the unit is
energized, the LED on the back of the sensor will
illuminate when the trigger passes if the correct
distance has been set.
CAUTION: Do not mount the speed sensor too close to

the trigger, the sensor will be ruined if it is struck by the
trigger.

7. Reinstall remaining components in reverse order of

removal.

E. INTELLISWITCH TEMPERATURE SENSOR REPLACEMENT

1. Set Intelliswitch mode to o.

2. Disconnect power to the unit.

3. Remove the wiring tray cover.

4. Cut necessary cable ties that may be holding the
brown temperature sensor lead.

5. Disconnect the temperature sensor from the socket.

6. Install new temperature sensor and all necessary

cable ties.

7. Reinstall remaining components in reverse order.

14. Install the trigger bar on the replacement motor so
that it is not closer than 0.030” to the motor bearing
cap (including shaft movement).

15. Ensure the trigger does not contact the speed sensor.
Maximum gap distance between trigger and sensor is
1/16” (2mm).

16. Reinstall in reverse order of removal.

G. REPLACEMENT OF ELECTRIC HEATER ELEMENT

1. Disconnect power to the unit.

2. Remove the intake grille by removing the locking
screws on each end of the unit.

3. Lift the intake grille up and away from the unit.

4. Remove the bottom access panel by removing the

Phillips head screws on the bottom of the unit.

5. Remove and mark all wires from damaged element.

6. To remove damaged element from unit, drill out rivets
and remove screws.

7. Install new element and connect all wires.

8. Reinstall cover and intake grille.

F. FAN AND MOTOR REMOVAL

1. Set Intelliswitch mode to o.

2. Disconnect power to the unit.

3. Remove the intake grille by removing the
locking screws on each end of the unit. Lift the intake

grille up and then away from the unit.

4. Remove the bottom access panel by removing the
Phillips head screws on the bottom of the unit.

5. Free the fan bearing retainer bracket(s) by loosening
the Phillips head screw lock located on the inside unit
end plate(s). Rotate them out of the way to allow the
fans to be removed.

6. Remove the transverse by removing the four (4) 5/16”
hex washer head bolts.

7. Rotate the speed sensor bracket away from the motor
by removing the Phillips screw farthest from the

motor and loosening the second Phillips screw. Do not

remove the speed sensor from the bracket.

8. Unplug motor harness from motor and remove

necessary wiring.

9. Using a 1/8” Allen wrench, loosen each set screw

attaching fan(s) to motor.

10. While holding the motor in place, loosen and remove
the motor clips.

11. Slide the fans toward the motor so that the ball bear
ings on the outer fan shaft are exposed.

12. Slowly roll the motor out of the motor mount cradle

forward 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.

13. If the unit equipped with an Intelliswitch, remove the
trigger bar from the motor shaft with a 5/64” Allen
wrench.

9

QUICK START INSTRUCTIONS

For your Berner Air Curtain with Intelliswitch™

www.intelli-how2.com

Mode/Fan Speed:
Mode: Select your mode of operation (see steps on page 2)
Fan Speed: Sets the speed of the fan
Delay Time: Amount of time the air curtain is to run after the door closes
Temp Set: Amount of heat and time the air curtain is to run after the door closes
Start Time: Programmable time of day air curtain becomes active
Stop Time: Programmable time of day air curtain stops running
T-Stat Mode: Set only heat or heat & fan
Set Time/Day: Programmable clock
Locked: Unit will run as programmed but settings cannot be changed

IMPORTANT NOTE!

If you air curtain unit is in “Locked” mode when you receive it:

Press and hold the left and right arrows simultaneously for 5 seconds to unlock.

www.berner.com Berner International Corporation 800.245.4455

10

STEP ONE

To Start: Press the Down Arrow button once.

NOTE: To change from “Mode” to “Fan Speed” press the down arrow twice.

STEP TWO

Use the Left and Right Arrows to scroll through the 8 available modes of operations

5 Standard Mode of Operation Options:

Door opens: The air curtain is o

OFF

ON

AUTO

Door shuts: The air curtain is o

Door opens: The air curtain activates
Door shuts: The air curtain continues to run

Door opens: The air curtain activates
Door shuts: The air curtain turns o

Door opens: The air curtain activates

delu

PLUS

For heated units only

Door shuts: The air curtain continues to run for a minimum of 60 seconds

Door opens: The air curtain and heater activate and run at set speed
Door shuts: The air curtain continues to run for a minimum of 60 seconds. If thermostat

is not satised, air curtain and heater continue to run until thermostat is satised. If
thermostat drops below set temperature, the heater and air curtain will run until
thermostat is satised.

3 Customizable Mode of Operation Options:

(See Installation Instructions for programming directions)

PRO1

For unheated units only

PRO2

For heated units only For heated units only

PRO3

STEP THREE

www.berner.com Berner International Corporation 800.245.4455

Once the Mode of Operation is selected, press the“OK” button

11

INTELLISWITCH™ FAQ’s (Frequently Asked Questions)

www.intelli-how2.com

WARNING: TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
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.

Even though every Architectural Low Prole 8 unit is individually tested at the factory before shipment,

on occasion improper functionality may be experienced. Here is a list of common questions:

Q. Why can’t I change my settings?

A. The Intelliswitch™ may be locked. If the Lock light is illumi­nated, the control is locked. To unlock, press and hold the left &
right arrows simultaneously for 5 seconds. The Lock mode can
also be protected with a PASScode. If the PASScode option is
on, an attempt to unlock the control will display PASS and then
a 0000 prompt. A four-digit code (available in the installation
instruction book Appendix) must then be entered to unlock
the control. Use the up and down arrows to select a number
and the left and right arrows to select the digit to edit. Press OK
when done. Note: If the AutoLock setting is on, the control will
re-lock if there is no activity after 5 minutes.

Q. Why won’t my heat work, even though fans are running?
A. The thermostat(s) or speed sensor may need adjusted or

replaced.

1.) Make sure that the thermostat probe and/or remote ther­mostat are in the “On” position and set above ambient (room)
temperature.

2.) Check internal and external thermostat status in the Diag­nostics Menu for a faulty thermostat. To do this, hold the right
arrow for ve seconds until DIAG appears, then arrow down to
the ts setting, if it displays “1” then the thermostat(s) is working
(there is a call for heat).

3.) If no external thermostat is used, check to see if the internal
probe is attached to the control board. Disconnect power to
the unit, remove the display board and check that the beige
sheathed cable is attached at both ends. If the thermostat(s)
and settings are correct and you are still not getting heat, then
check to see the fan speed. to do this, press the down arrow to
reach the Mode/Fan speed setting. Use the right and left arrow
to change the fan speed.

4.) Check to see if you can adjust the fan speed. If the speed
sensor is bad there will be no speed control and the Intel­liswitch will not let the heat come on. If it is too dicult to de­termine a change in speed, the speed sensor can be checked by
entering the DIAG menu and checking the rst error code. If ER
10 displays, the speed sensor is recognized by the Intelliswitch.
If the code ER 11 is displayed, the Intelliswitch does not recog­nize the sensor, and it may be faulty or need adjusted closer to
the trigger bar. Turn o the power to the unit and remove the
screen to check the distance between the sensor and the trig­ger located on the left side of the motor (use the bottom access
cover for steam/hot water heated units). The sensor should be
less than 1/16” from the trigger face. Check distance at both
ends of trigger. Adjust if necessary.

5.) If there is still no heat or speed control, you may need a new
speed sensor: consult factory.

Q. Why won’t the Intelliswitch light up?
A. There may not be power to the control.

1.) Check to see if the main power is turned on to the unit. Your
air curtain may have multiple disconnects, be sure all are turned
on.

2.) Verify that there is power to the board. NOTE: ONLY QUAIL-

IFED PERSONS SHALL CHECK POWER IN THE UNIT WITH THE
POWER ON. The power terminals are located directly behind

the display. Remove two Phillips screws from the Intelliswitch
display to expose the power terminals and check the line volt­age at spade terminals L2 and 120, 208 or 240 (depending on
the voltage supplied to the unit).

3.) Check the ribbon cable connections to the display board for
a loose connector or improperly connected cable (see Installa­tion Instructions for correct cable connection).

4.) If display still doesn’t light, unplug the speed sensor and
thermostat probe (if a heated unit) from the control board. If
the display lights, plug one component back in at a time to see
which one may be shorted. The faulty component will make
the display go blank again.

5.) If there is line voltage power at the board terminals, the
ribbon cable is correctly connected, the speed sensor and the
thermostat are working, and it is still not working, you may
need a new circuit board: consult factory.

Q. Why won’t my fans shut o?
A. The Intelliswitch may be in the wrong mode or mis-wired.

1.) Check to see if the control is in the “ON” mode, if it is, then
change the Mode to another setting.

2.) The T-Stat Mode may be set to the “both” setting and the
thermostat is calling for both Fan and Heat, change the T-Stat
Mode to “HEAT”.

3.) If there is a door switch and the unit is in a mode that is acti­vated by it, there could be a short, mis-wiring or mixup in com­ponents. Close the door and check the door switch status in the
Diagnostics menu. Hold the right arrow for ve seconds until
DIAG appears, then arrow down to the ds setting, if it displays
“1” then the door switch signal is closed (there is a call for fan). If
the door is closed, the signal should be “0” or open.

4.) There could be a short in the eld connections to the door
switch or the door switch leads could be mis-wired. To test,
disconnect the door switch connection at the unit. Opening the
wiring tray on top of the unit and be cautious of high voltage
connections. Disconnect the blue wires labeled 9 & 10 from the
eld wiring to the door switch or make sure they are not tied
together. There is no danger of getting shocked because the
signal is 5 volt dc. Be sure not to touch the blue wires to any­thing metal (or grounded). The unit should shut o when it is in

12

INTELLISWITCH™ FAQ’s Continued (Frequently Asked Questions)

www.intelli-how2.com

any mode that is activated by the door switch.

5.) If the air curtain is heated, make sure that the thermostat

isn’t wired to the door switch leads. Door switch leads are blue
and labeled 9 & 10.

Q. How can I check the door switch to be sure it’s working?
A. The Intelliswitch may be in the wrong mode, be mis-wired or

have a faulty door switch.

1.) Test the wiring and controller function at the same time rst.

Locate the door switch and open its wiring compartment by re­moving the two screws holding on the back cover. There should
be two wires connected to screws inside the switch. There is no
danger of getting shocked because the signal is 5 volt dc. Be
sure not to touch the wires to anything metal (or grounded).
Either disconnect both wires from the screws (noting which
screws the wires are under) and touch them together (with air
curtain in “Auto” mode) or make a short jumper wire and touch
the jumper to both screws at the same time to see if air curtain
comes on. If it does, the controller and wiring work.

2.) If the wiring and unit pass the function test, the problem

could be either misalignment or a faulty door switch. On a
magnetic reed switch check for magnet alignment, for plunger/
roller type switch, check contact engagement with door.

3.) If you have access to an electrical test meter, the door switch

contacts can be tested for continuity when the door switch
wires are disconnected from the unit.

Q. Why won’t my heat shut o?
A. The Intelliswitch may need adjusted, have been mis-wired or

have a faulty thermostat.

1.) Heat is activated by one of two thermostat connections.

To test the internal thermostat set the external thermostat to
OFF. The settings of the unit mounted thermostat probe are
accessed through the display. Press the down arrow until the
Temp Set indicator lights up; check if the temperature setting
and unit of measure are correct. Test to see if it shuts o by set­ting the thermostat temperature to OFF or lower than the room
temperature.

2.) If an external thermostat is connected to the unit, there

could be a short in the eld connections or the thermostat
leads may be mis-wired. To test the external thermostat set the
internal thermostat to OFF. Disconnect the external thermostat
connections at the unit. Open the wiring tray on top of the unit
and be cautious of high voltage connections. Disconnect the
orange wires labeled 6 & 7 from the eld wiring to the thermo­stat or make sure they are not tied together. There is no danger
of getting shocked because the signal is 5 volt dc. Be sure not
to touch the orange wires to anything metal (or grounded). The

heat should shut o when the wires are separated.
For more complex troubleshooting of either thermal cutouts or
heater contactors, please consult a qualied electrician or the
factory.

Q. Why didn’t the Intelliswitch save the changes I made to a
program?
A. If a program is active (a dot is illuminated by one of the

clock digits), changes can be made to any settings on the User
Menu. These changes however will only remain in eect until
the program changes to the next time zone. To make changes
permanent, settings must be changed in the program from the
Program Menu. Access the Program Menu by holding down the
left arrow for 5 seconds until “PRO” is displayed. Arrow down
to select programming and arrow left to select the program to
edit. Use the down arrow to step through the options and make
changes as desired. Continue to press the down arrow until Stor
is displayed. Press OK or down to keep or store the changes.

Q. How do I undo a change that I made to a program in the
Program Menu?
A. Changes to programs cannot be undone. The programs can

however be reset to the factory default settings. This must be
done on the Factory Menu. Access to the Factory Menu is at­tained through the Diagnostics Menu. Press and hold the right
arrow for 5 seconds until “DIAG” is displayed. From the “DIAG”
display press and hold the up and down simultaneously for 10
seconds until “FACT” is displayed. Use the down arrow to select
“DEFn” on the display then use the right arrow to select “DEFP”.
Press “OK” to reset. The control display will go blank then blink
as conrmation.

Q. My air curtain won’t turn on?
A. Check the AM/PM setting on the Start and Stop times or the

clock (considering the AM indicator light whensetting values).
Note: set the start time and stop time to the exact time for the
unit to be active full time. Check to see if a program is active
that may have dierent start/stop times than those expected.

Q. My building has a Building Management System, can the
Intelliswitch work with a BMS?
A. The Intelliswitch can be controlled by a Building Manage-

ment System (BMS) but currently does not have the ability to
communicate with them. Dry contacts on the BMS may be used
to control the unit activation through the door switch connec­tions (blue wires 9 & 10) and the heat activation thought the
remote thermostat connections (orange wires 6 & 7). Consult
factory.

13

A. PROGRAMMING THE INTELLISWITCH™

To reduce the risk of injury and ensure proper operation all
Notes and instructions shall be read!

Note: The STOP button is available at all times and im­mediately stops the unit for an emergency situation. The
Intelliswitch® will display STBY for Stand By when selected.
To release the control from STBY press STOP again. When
the control is released from STOP it will be in the OFF Mode.
Press the left or right arrows to select new Mode or OK to
return to the clock.

STOP

2.2. Multi-level Options

Multi-level options require additional actions to access an op­tions setting. The right or left arrow is required to enter into an
option.

If the multi-level option has one value to edit it may be
changed directly with the up and down arrows.

If the multi-level menu option has two values (such as a time
value) the rst option value ashes upon selection. Use the left
or right arrow to select which value to change and then use the
up and down arrows to change the option value. See the Menu
Options section for the option increment i.e. hours/minutes,
minutes/seconds.

To leave a multi-level option, use the left or right arrow to cycle
through the option value until it stops ashing. The up or down
arrow may now be used to navigate to the other options.

3. Menu Structure

The Intelliswitch™ has four menus:

• User Menu (Section 4)

• Program Menu (Section 5)

• Diagnostic Menu (Section 6)

• Factory Menu (Section 7)

Note: When changing options, if there is no activity for 15
seconds, the control will save changes and default back to
the User Menu display clock.

Note: The OK button always saves the current entered
value and returns you to the User Menu display clock.

Section 1: Quick Start Reference
Section 2: Arrow Navigation
Section 3: Menu Structure
Section 4: User Menu
Section 5: Program Menu
Section 6: Diagnostic Menu
Section 7: Factory Menu
Section 8: External Connections

1. Quick Start Reference

1.1. Press the Menu button (down Arrow).

1.2. Using the left and right arrows, select the operating

Mode: O, On, Auto, Deluxe, Comfort Plus or Program
Number 1, 2 or 3.

1.3. Press OK.

2. Arrow Navigation

The up and down arrows select the menu options.
The left and right arrows change values for single-
level menu options (Mode, Speed, Temp Degree, Temp Set,
T-stat Mode and Day) or are used to enter into multi-level
menu options (Delay Time, Temp Set, Start Time, Stop Time
and Set Time).
Arrow sequence and available settings are illustrated under
each option.

2.1. Single Level Options

Single level options can change values directly with the left and
right arrows. No additional actions are necessary to access these
option settings.

Appendix -14

The User Menu is the top level menu where values for each op-
tion is entered based on the Mode selected. Each option is iden­tied by a green light when selected. The clock display is the
default home position for the User Menu when OK is selected or
there is no activity for 15 seconds.

Note: Access to all Secondary Menus must originate from
the User Menu. Secondary Menus are identied by the
menu title upon successful entry, e.g. PRO, DIAG and FACT.

The Program Menu is used to edit all program option param-
eters.
The Diagnostic Menu is used to diagnose and troubleshoot
errors with the Intelliswitch™.
The Factory Menu is only to be used when directed to reset or
change factory default settings.

4. User Menu

To enter into the User Menu press the down arrow (menu) or up
arrow. Use the down or up arrow to step through each option.
Each option is identied by a green light when selected.
Options available from the User Menu are:

• Mode

• Fan Speed

• Delay Time

• Thermostat degree type

• Thermostat Set Point

• Start Time

• Stop Time

• Thermostat Control Mode

• Time Set

• Day Set

• Lock/PASScode

4.1. Mode: single-level

NOFF-ON-AUTO-DELU-PLUS-PRO1-PRO2-PRO3O
Use left or right arrows to select the desired Mode of Operation.
Press “OK to accept selection.

• OFF – air door o.

• ON – air door will run when start/stop time is satised.

• AUTO – air door will run when terminals 9 & 10 are

connected through a switch (i.e. doorswitch) and the
start/stop time is satised, ALL menu options available.

• DELU – air door will run when terminals 9 & 10 are

connected through a switch (i.e. doorswitch) and the
start/stop time is satised, MUST set time delay from
1-10 minutes, T-Stat Mode NOT available.

• PLUS - air door will run when terminals 9 & 10 are

connected through a switch (i.e. doorswitch) and
the start/stop time is satised, when door is closed and
temperature drops below the set point the air door
will run on low speed with heat (low speed set on the
Program Menu), air door will run at higher user level
set speed when the door opens.

• PRO1 – Runs Program #1; see Program Menu Section,

1st digit indicator light when active.

• PRO2 – Runs Program #2; see Program Menu Section,

2nd digit indicator light when active.

• PRO3 – Runs Program #3 see Program Menu Section,

3rd digit indicator light when active.

NOTE: When Program Modes are selected changes can only
be made to the Mode, Time Delay, Temperature, Time and
Day settings. Changes will only remain in aect until the
program changes between active time zones.
NOTE: AutoLock, Comfort + Low Speed and PASSCode are
global options and their settings are the same for any Mode
selected. They will not change when the Mode or Program
changes.

4.2. Fan Speed: single-level

SP N 1-2-3-4-5-6-7-8-9-10 O
Use left & right arrows to select fan speed from 1 to 10. (1=low,
10 = high)

4.3. Delay Time: multi-level – min/sec

N OFF – 00:01 thru 10:00 O
Select option with right arrow, use up & down arrows to set the
amount of time that the air door will delay shutting o after
terminals 9 & 10 or doorswitch are opened.

4.4. Temp Set (air doors): single level

N °F – °CO
Use left & right arrows to select the temperature degree type,
Fahrenheit or Celsius, for thermostat set point.

Note: This option is only available for heated units with a
built-in thermostat.

4.5. Temp Set : single level

N OFF – 34°F thru 90°F O
or
N OFF – 1°C thru 32°C O
Use left & right arrows to select the temperature set point when
the heat is to be activated.

Note: This option is only available for heated air doors with
built-in thermostat.

4.6. Start Time: multi-level – hours/min

Select this option with right arrow, use up & down arrows to set
the time that the unit is to turn on in the ON Mode or become
active for AUTO, DELU and PLUS Modes

Note: To turn o this feature the Start Time must be set
equal to Stop Time (including am/pm).

4.7. Stop Time: multi-level – hours/min

Select this option with right arrow, use up & down arrows to set
the time that the unit is to turn o in the ON Mode or become

Appendix - 15

active for AUTO, DELU and PLUS Mode.

Note: to turn o this feature the Start Time must be set
equal to Stop Time (including am/pm).

4.8. Thermostat Mode: single level

N HEAT-BOTH O
Select the control mode for the built-in and remote thermo­stats. The HEAT mode only cycles the heater on call for heat
from either internal or external thermostats when the fan is run­ning. BOTH mode cycles both the fan and the heater on a call
for heat from either internal or external thermostats.

Note: This option is only available for electric heated air
doors with built-in thermostat or air doors with external
remote mount thermostat connected between terminals 6
& 7.

4.9. Set Time: multi-level – hours/min

Select option with right arrow, use up & down arrows to set the
clock. Note: time does not adjust for daylight savings time.

4.10. Set Day: single level
N DAY1-DAY2-DAY3-DAY4-DAY5-DAY6-DAY7 O
Use left & right arrows to select day of the week, where Sunday
= DAY1, Monday = DAY2, etc. Used as a reference by programs.

4.11. Lock/Unlock
The Intelliswitch™ can be locked to prevent unauthorized
tampering of the settings.
When locked, only the options on the User Level may be
viewed. Only the Mode can be changed between OFF and the
Mode that was active when it was locked, all other options may
NOT be changed.
To lock or unlock, press and hold the left and right arrows simul­taneously for 5 seconds, the Locked light will illuminate.
If the PASScode option is ON, an attempt to unlock the control
will display PASS and then a 0000 prompt to enter a four digit
unlock code. Use the up & down arrows to change the numbers
and the left & right arrows to move between positions.

Note: When the AutoLock option is set to ON in the Pro­gram Menu, the Intelliswitch™ will automatically lock after
5 minutes without any activity. Default setting – OFF. See
Section 5.2
Note: When the PASScode option is set to ON in the Factory
Menu, the Intelliswitch™ will require a code be entered to
unlock the control. Default setting – OFF. See Section 7.4.

5. Program Menu

To enter into the Program Menu hold down the left arrow for 5
seconds. PRO will display when the Program Menu is available.
Use the Program Menu to set the following options:

• Program 1, 2 & 3 settings

• AutoLock setting

• Comfort Plus low speed setting

• Master/Slave Stand By setting
NPRO-AULC-PLUS-STBY O
Program Menu – single level
Use left & right arrows to select the option to change.

5.1. Program

The Intelliswitch™ can store up to three Dual-Tine Zone pro­grams. Use the Program option to select and save User Menu
settings to be recalled at anytime.
A time zone is the period of operation dened by the use for
the unit to be active. Both zones may operate one after the
other or have gaps between them.

Note: If a longer cable is required than was supplied,

The Program menu allows parameters for the following options

it can be ordered from the factory or made by using

to be set:

• Number of Zones: 1 or 2

standard at telephone cable, phone jack connectors

• Days of the week to operate per zone

and the proper crimping tool.

• Mode (O-On-Auto-Deluxe-Plus)

• Speed
G. Remote mounted Display Faceplate - if operation of the

• Time Delay
Intelliswitch is desired through a remote mounted display

• Thermostat Set Point
face plate continue, otherwise skip to step H.

• Start Time

NOTE: Maximum mounting distance between the Dis-

• Stop Time

play Faceplate and the unit is 20’.

• Thermostat Mode

The unit MUST be factory ordered with the remote
mounted faceplate option.

To enter into the Program menu press the down arrow (menu

1. When the remote faceplate option is ordered

button) at the PRO display. Use the left & right arrows to select
the program to be edited.

from the factory the air curtain comes equipped with
N PRO1-PRO2-PRO3 O

the blank faceplate and 12’ ribbon attached. The

Note: After setting the number of zones and active days all

Diplay Faceplate is shipped loose ready for eld

parameters are set the same as the User Menu. Use the Up

installation.

and Down arrows to accept changes and OK to return to

2. Locate the male end of the 14-conductor ribbon cable

User Menu.

in the wiring tray and run to the remote display loca
tion. The cable is minimum CL2 rated and should not

5.1.1. Zone: single level
need to be in conduit.

N Zn 01-Zn 02 O

3. Connect the ribbon cable to the 14-pin socket with red
stripe positioned on the top left when facing the front

Select the number of Zones for the program. If one zone is

of the display board.

selected a prompt will ask to save settings after the last option.
If two zones are selected, Zone1 parameters will be set rst and

4. Mount remote faceplate to the wall.

then parameters for Zone2 will be set. A prompt will ask to save

H. Reinstall the wiring tray cover.
settings after the last option of Zone2.

I. For Electric, Steam and Hot Water air curtains proceed to
Section VI - Field Connections otherwise proceed to

5.1.2. Day: multi-level

Section VII - Operation and Controls.
Nday-day1-day2-day3-day4-day5-day6-day7 O

VI. FIELD CONNECTIONS

Select the days of the week that the program is to operate for

A. ELECTRICALLY HEATED MODELS

each zone.
The heater circuit may be controlled by a remote

When day is displayed, press the right arrow to enter into the
thermostat or manually through the Intelliswitch located

day parameters.
on the discharge side of the air curtain. Overheating

Once in the day parameters each day is identied by the day
number, use the right or left arrows to select yes to active a day

protection is provided by auto reset thermal
or no to deactivate a day.

cutouts built into the heater coil assembly
N dy 1n-dy 1yO

(see the wiring diagram).

  i

B. STEAM OR HOT WATER HEATED MODELS

N dy 2n-dy 2y O

Piping should be done in accordance with local

  i

codes, regulations and standard practices.

N dy 3n-dy 3y O

Connect the building system supply and return to
the ¾” MPT nipples on the heating coil. See Figure 8.

Use the up and down arrows to move to the next day or skip
days until day is displayed.
From this point enter right to re-enter day settings or down to
continue.

Note: The top seven LED’s will light from the top down rep­resenting days 1 thru 7 that have been activated.

5.1.3. Mode: single level

Select operating mode for Zone. Only O, On, Auto or Plus are
available.

5.1.4. Fan Speed: single level

Select the fan speed for the time zone being programmed.

5.1.5. Time Delay: multi-level

Set the time delay for the time zone being programmed.

5.1.6. Temperature Set: single level

Appendix -16

Set the temperature set point for internal thermostat for Zone
being programmed. Degree type is based on degrees selected
on the User Menu.

5.1.7. Start Time: multi-level
Set start time for zone program to activate including am/pm.

Note: Zone 1 has priority over Zone 2 and if conicting
times are entered Zone 1 will always activate and take pre­cedence over Zone 2.

5.1.8. Stop Time: multi-level

Set stop time for zone program to activate including am/pm.

Note: Zone 1 has priority over Zone 2 and if conicting
times are entered Zone 1 will always activate and take pre­cedence over Zone 2.

5.1.9. Thermostat Mode: single level

Set thermostat mode for Zone.

5.1.10. Store: single level
N str y-str n O

Use the right or left arrows to select yes to save program or no
to abandon changes.
A single zone program will prompt to save all options after the
rst set of parameters; a dual zone program will prompt to save
after the second set of parameters.

Note: upon saving, the LED on the digit light corresponding
to the program number will blink.

5.2. AutoLock: multi-level

N ON-YES O

To enter into the AutoLock menu press the down arrow (menu
button) at the AULC display. Use the left or right arrows to se­lect ON to have control automatically lock if there is no activity
for 5 minutes or OFF to deactivate.

5.3. Comfort Plus (fan speed): multi-level
SP N1-2-3-4-5-6-7-8-9-10 O see Note*

To enter into the Comfort Plus low speed setting, press the
down arrow (menu button) at the PLUS display. Use the left or
right arrows to select the fan speed for the PLUS mode, when
the door is closed and the thermostat set point is reached.

*Note: The speed range is limited to be equal to of less than
that of the User Menu speed setting.

5.4. Master/Slave Stand By: multi-level

N ind-ALL n O

To enter into the Master/Slave stand by setting press the down
arrow at the STBY display. Use the left or right arrows to select
the STOP button behavior when units are connected together
in a Master/Slave conguration. Select “ind” or independent to
stop only the unit where STOP is pressed. Select “ALL” to stop all
connected units.

6. Diagnostic Menu

To enter into the Diagnostic Menu hold down the right arrow
for 5 seconds. DIAG will display when the Diagnostic Menu is
available.
The Diagnostic Menu is used to diagnose and troubleshoot In­telliswitch™ errors. Only “live” parameter settings are displayed,
there are no options to change.

The Diagnostic Menu displays the following parameters:

• Software version release

• Speed Range Setting

• Internal Thermostat reading – Celsius

• Internal Thermostat reading – Fahrenheit

• Motor rpm reading

• Supply Voltage Frequency

• Door Switch status

• External Thermostat status

• Heater Relay status

• Error Code 1 – Speed Sensor

• Error Code 2 – Line Frequency

• Error Code 3 – Power Issue

• Error Code 4 – Motor O Fault

6.1. Software Release Version – Format: rX.XX

6.2. Fan Speed Range – rn XX (see Section 7.1)

6.3. Thermostat Probe – Pr XX (see Section 7.2)

6.4. Internal Thermostat – ºC (np = no probe)

6.5. Internal Thermostat – ºF (np = no probe)

6.6. Motor RPM – measured speed in rpm

6.7. Supply Voltage – measured frequency in Hz

6.8. Door Switch Status – 0=open, 1=closed

6.9. External T-stat Status – 0=open, 1=closed

6.10. Heater Relay Status – 0=open, 1=closed

6.11. Error Codes

The Intelliswitch has six error codes, 1 through 6, to help
troubleshooting. The status of 1-4 can be observed from the
Diagnostic Menu. The format for displaying the error code is the
“Er” descriptor and a two digit code. The rst digit is the error
number and the second digit is the status using international
convention. 0 = inactive, 1 = on or active.

6.11.1. Error Code 1 – Speed Sensor
Er 10 – Prox Sensor or Speed feedback exists
Er 11 – NO Prox Sensor or Speed feedback
Solution – check to see if the proximity sensor (located next
to the motor) is connected to the control board and check
distance between tip and trigger bar is approximately 1/16 of
an inch.

6.11.2. Error Code 2 – Line Frequency
Er 20 – power supply line frequency exists
Er 21 – undetermined supply line frequency
Solution – The Intelliswitch automatically senses line fre­quency. In the event that it can not determine the proper line
frequency, it will run at full speed and ash error. Manually set
the line frequency in the FACT menu. See Section 7.5.

6.11.3. Error Code 3 – Zero Cross/Power Issues

Er 30 – clean power exists
Er 31 – poor power exists, electrical noise
Solution – When the control encounters “noise” in the electrical
power supply it will run at full speed and ash error code. There
are no internal changes available. Have the electrical system
checked for problems.

6.11.4. Error Code 4 – Speed Feedback

Er 40 – proper motor and sensor operation
Er 41 – Motor o but receiving prox/speed sensor feedback
Solution – this is usually the result of a failing motor control
component on board that cannot be serviced. A replacement
board is required.

6.11.5. Error Code 5 – Corrupted Memory Setting

Appendix - 17

Er 51 – Status of this error is not available. It only appears when
there has been an event that has corrupted the settings in
memory. When corrupted settings are identied the control
will reset all settings (except for Speed Range) back to Factory
default values. Because some speed ranges are not compat­ible with all motors, the proper value cannot be automatically
set and therefore requires user input. This is prompted by the
scrolling “Set FACt SPEEd” on the display.
Solution – press the “OK” button. This will open the range set­ting identied by “rn”. Select the correct speed range (see Sec­tion 7.1) based on the Series/Model. Press “OK” button.

6.11.6. Error Code 6 – Incompatible Speed Range for Mas­ter/Slave Operation

Er 61 – Status of this error is not available. It only appears when
unit are connected in a Master/Slave conguration that do not
have identical Speed Range settings.

If two units are connected without equivalent speed ranges,
every time a button is pressed on the Master unit (the unit used
to make setting selections) the Slave unit will display an “Er 61”
and the Slave will ignore the command to protect the control
from damaging the motor.

Solution – Enter the Factory Menu to select the proper Speed
Range (See Sections 7 and 7.1)

Note: This error does not monitor if the correct speed range
has been selected for a Series/Model. Only that two or more
units have been connected that do not have equivalent
speed ranges.

Note: Once the correct speed ranges are selected and the
controls accept commands from one another, the controls
should be synchronized by simply cycling through all of the
settings on the User Menu using the up or down arrows.
None of the settings need to be changed.

7. Factory Menu – Service Personnel Only

The Factory Menu must be entered from the DIAG header. To
enter into the Factory Menu hold down the right arrow for 5
seconds. DIAG will display when the Diagnostic Menu is avail­able. From the DIAG display, press and hold the up and down
arrows simultaneously for 10 seconds. FACT will display when
the Factory Menu is available.

Note: When the Factory Menu is accessed it automatically
shut the unit o by changing the Mode to OFF.

The Factory Menu is used to change or reset core settings to
change base functions or resolve Intelliswitch™ errors.
The Factory Menu allows parameters for the following options
to be set:

• Speed Range Setting

• Restore Factory Default Settings

• Reboot Software

• PASScode

• Supply Voltage Frequency
To enter into the Factory Menu from the header press the down
arrow. Use the left & right arrows to change setting values. Use
the OK button select action and return to the User Menu.

7.1. Speed Range: single level
rn N 0 – 1 – 2 – 3 – 4 – 5 – 6 – 7 – 8 – 9 – 10 -11 – 99 O
Select the fan speed range from 0 to 11 using the left or right
arrows. The speed range for each unit is located on the unit wir­ing diagram called out in a box in the Intelliswitch® schematic
by “SPEED rn __”.

Note: Selecting the incorrect speed range can damage the
motor(s) beyond repair and potentially create abnormally
high temperatures.

Speed ranges are dependent upon the air curtain Series, motor
type and heat option.
ALC08(1/5 hp) – all voltages use ranges 0-2
Available ranges are:
0 = ambient – variable 10-speed, 600 rpm to full
1 = ambient – variable 10-speed, 1050 rpm to full
2 = heated – variable 10-speed, 1250 rpm to full
3 = ambient – full on, no adjustment
4 = heated – full on, no adjustment (monitored)
5 = heated – full on, no adjustment (not monitored)
6 = ambient – multiple 3-speed, ITC relay control
7 = heated – multiple 3-speed, ITC relay control
8 = ambient – variable 3-speed, 1250 rpm to full
9 = heated – variable 3-speed, 1250 rpm to full
10 = ambient – multiple 2-speed, ITC relay control
11 = heated – multiple 2-speed, ITC relay control
99 = lock out – scrolling request for user input

7.2. Thermostat Probe Mode: single level

In “St” (Standard) mode the lowest operating point for the
thermostat probe is 34°F (1°C). Below this temperature there
will be no call for heat and “nP” (no Probe) will display on the
diagnostics menu.
In “Cd” (Cold) mode the thermostat will operate below 34°F
(1°C) but disables the “nP” (no Probe) feature and will call for
heat on a probe failure or if it is disconnected.
St - Standard mode, locks out below 34°F (1°C). Cd - Cold
mode, works below 34°F (1°C).

7.3. Restore Factory Default: single level

DEF N n – U – P – A – tO
If it is necessary to restore any of the controls settings back to
the factory defaults, select DEF using the down arrow. Select
the factory setting restore type using the left or right arrows.
This will reset the option settings back to the factory default
settings. Available selections are:
DEFn – no changes
DEFU – reset User Menu ONLY settings
DEFP – reset Programs ONLY settings
DEFA – reset ALL settings (user and program)
DEFt – set controller to factory TEST parameters

7.4. Reboot Software: single level

N reb y – reb n O
If an error occurs that can be xed by rebooting the control
software, select REB using the down arrow. Select YES or NO to
reboot the control.

7.5. PASScode multi-level

N PAS y – PAS n O
Select y to enable the PASScode feature and n to disable. When
active, the PASScode feature requires that a four digit code be
entered to unlock the control. The code is: 2376

8. External Connections

There are three types of external connections available on the
Intelliswitch™.

• Door Switch

• External Thermostat

• Serial Connection

8.1. Auto Mode Activation

When terminals 9 and 10 in the junction box are connected
(closed), the Auto, Deluxe, Plus and Programmable Modes are
activated. The Intelliswitch™ uses a low 5 volt DC voltage signal
to monitor contact closure.

8.1.1. Door Switch (limit switch)

The door or limit switch is used in conjunction with the Auto,
Deluxe, Plus and Programmable Modes to signal that the door
is open. Connect the door or limit switch to terminals 9 and 10
in the air door junction box.

8.1.2. Building Management System

A building management system or dry contact closure can be
used to activate the air door through the Auto, Deluxe, Plus and
Programmable Modes. Connect applicable contacts to termi­nals 9 and 10 in the air door junction box.

8.2. Heat Mode Activation

When terminals 6 and 7 in the junction box are connected
(closed), the Heat Mode is activated for all Operating (On, Auto,
Deluxe, Plus and Programmable) Modes. The Intelliswitch™ uses
a low 5 volt DC voltage signal to monitor contact closure.
If the internal thermostat is left on, the external heat mode
will operate in parallel to contact closure, allowing either one
to activate the heat. If the internal thermostat is turned o the
external heat mode will activate independently to activate the
heat.

8.2.1. External Thermostat

An external (remote) thermostat connection can be used to
sense temperature independent of the built-in thermostat.
Connect thermostat to terminals 6 and 7 in the air door
junction box.

8.2.2. Building Management System

A building management system or dry contact closure can be
used to activate the Heat Mode for all Operating Modes. Con­nect applicable contacts to terminals 6 and 7 in the air door
junction box.

8.3. Master/Slave Operation

For Master/Slave Operation a serial cable connection must be
made between all Intelliswitch™ controls of each air door to be
linked.
Once air doors are linked all Menu settings made through any
air door display or remote control will transfer to all other linked
air doors.
Parameter changes made on any linked air door will update all
other boards “live” upon menu selections.

7.6. Line Frequency: single level

N Fr Au – Fr 60 – Fr 50 O

The Intelliswitch® default is to automatically sense the line volt­age frequency. If it cannot be determined automatically, the
line frequency may be manually selected.
Au – Automatically Sense
60 – 60 Hz power supply
50 – 50 Hz power supply

Appendix - 18

9. Infra-red Remote Control

The handheld infra-red remote control buttons, layout and
operation are the same as that on the Intelliswitch™ air door
display (including multiple button presses) with one exception,
the Lock Button.

There is no need for multi-button press and hold for lock/unlock
activation. The Lock Button will lock/unlock display in one press.

X. TROUBLESHOOTING

SYMPTOMS REMEDY

NO AIR

MINIMUM AIR

NO SPEED
ADJUSTMENT

AIR IS NOT HITTING
FLOOR

UNEVEN AIR

• Power supply line open (no power)

• Fuse blown/circuit breaker tripped

• Motor overload tripped

• Failed switch

MOTOR RUNNING/FANS ARE NOT ROTATING

• Brokenordamagedexiblehub

• Shaft rotating inside fan

ELECTRICAL CONTROLS NOT FUNCTIONING WHEN DOOR IS OPEN

• Selector switch is in off position

• Door limit switch not operating

• Air directional discharge vanes mis-adjusted

• Inadequate intake clearance

• Blower motor operates below speed

• Fan rubbing against housing

• Fan wheels clogged with dirt

• Fan in backwards

• Speed sensor not detecting
trigger rotation

• Air stream too weak

• Air steam hits obstruction

• Negative pressure

• Shaft rotating inside fan

• One motor not operating

CAUSE

• Check power source, check method of control 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 sleeve/reengage coupling

• Tighten set screws/tighten fan on shaft

• 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

• Check fans for blade curve toward discharge

• Adjust gap between sensor & trigger/
replace sensor

• 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

• Repair or replace motor

EXCESSIVE AIR
MOVEMENT AT DOOR­WAY

NO HEAT

MINIMAL HEAT

EXCESSIVE HEAT

EXCESSIVE HEAT

MINIMAL HEAT

• Nozzle not angled out far enough

• Unit too powerful

• Air movement too cold

• Pushing air outside building

SEE AIR IS NOT HITTING FLOOR SYMPTOMS

ELECTRICALLY HEATED MODELS

• Switch turned to “ON” position

• Thermostat not set properly

• Coils burned out due to lack of air

• Automatic reset thermal cutout failed in open position

• Manual reset thermal cutout tripped (if supplied)

• Speed sensor not detecting trigger rotation

• Without speed adjustment, failed speed sensor

• Thermostat in wrong location - thermostat too
close to discharge

• Improper voltage

• Thermostat not set properly

• Speed sensor not detecting trigger rotation

• Incorrect speed range

• Thermostat in wrong location

• Thermostat not set properly

• Insufcientairovercoil

• Improper voltage

STEAM/HOT WATER HEATED UNITS

• Too high steam/hot water pressure

• Inadequateairow,nspluggedup,dirtycoils

• Insufcientremovalofcondensation(steam)

• Not enough steam pressure/water temperature too
low

• Intake air below design temperature

19

• Adjust nozzle angle to outside

• Adjust motor speed

• Add auxiliary heat to overcome wind chill factor

• Adjust discharge angle back into building, adjust motor
speed

• Replace switch or check wiring

• Change thermostat setting

• Correctairowproblem;replacecoils

• Replace automatic thermal cutout

• Reset manual thermal cutout

• Adjust gap between sensor and trigger

• Replace speed sensor

• Move thermostat away from air stream

• Supply proper voltage

• Change temperature setting

• Adjust gap between sensor & trigger/replace sensor

• Set dip switch to electric heated speed range

• Move the thermostat closer to air stream

• Change temperature setting

• Remove restriction on intake

• Supply proper voltage

• Reducesteampressure/hotwaterow

• Clean intake and coils

• Increase trap size

• Raisepressureforsteam/increasewaterow

• Increasesteampressure/increasewaterow

XI. WARRANTY

Berner International (“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 specied 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 qualied
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 benet
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

BERNER INTERNATIONAL CORPORATION

New Castle, Pennsylvania

724-658-3551 • 1-800-245-4455 • www.berner.com • [e-mail]

Berner reserves the right to alter specifications without prior notice.

© Copyright 2015 Berner International Corporation MADE IN U.S.A.

20