BERNER CHD10 Air Curtain Instruction Manual
- June 15, 2024
- BERNER
Table of Contents
Commercial High Performance 10
Air Curtain Series #CHD10
Sanitation Certified High Performance 7
Air Curtain Series #SHD07
www.Berner.com
CHD10 Air Curtain
When the door is open ™, BERNER AIR CURTAINS
Installation & Maintenance Instructions
Thank you for choosing Berner.
Berner International has been saving energy and creating healthy, comfortable
environments for our customers for over 60 years.
Berner offers unmatched quality, performance, and dependability—not to mention
our service. At Berner, we stand behind our products.
READ ALL INSTRUCTIONS BEFORE INSTALLING OR USING AIR CURTAIN
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Commercial High Performance 10 Air Curtain (Air Door)| Sanitation Certified
High Performance 7 Air Curtain (Air Door)
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
fire, electric shock, or injury to persons. If you have any questions, contact
the manufacturer.
C. Before servicing or cleaning unit, switch power off at service panel and
lock the service disconnecting means to prevent power from being switched on
accidentally. When the service disconnecting means cannot be locked, securely
fasten a prominent warning device, such as a tag, to the service panel.
D. Installation work and electrical wiring must be done by qualified person(s)
in accordance with all applicable national and local codes having
jurisdiction, including fire-rated construction. See page 7, 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 fire, do not store or use gasoline or other flammable
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 “off”, and turn off 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 fire, or damage the
air curtain.
L. To prevent a possible fire, 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 flammable 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 off and inspect for any objects on or adjacent to
the heater that may have blocked the airflow or otherwise caused high
temperatures to have occurred. DO NOT OPERATE THE HEATER WITH THE ALARM
SOUNDING (OR ILLUMINATING).
UNCRATING
Carefully examine the carton(s) for damage. If the carton is damaged,
immediately notify the shipping company. Do not delay in filing 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 was ordered with a wall mounting plate, remove and save the
two (2) locking screws from the back corners and detach the wall mounting
plate. See Figure 1.
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.
Simple to Install Easy to operate & maintain
Rule of thumb –
If the unit must be mounted higher than 1” above the opening, it must be
spaced out from the wall 3/8” for every inch the unit is above the door
opening.
Mark the wall
according to the length of the air curtain.
If the keyhole slots are not located where suitable support is available,
drill new holes in the back plate where space is available.
After installing the mounting
hardware, lift and slip the air curtain over the mounting hardware by grasping
the inlet rings. Tighten the mounting hardware.
To use threaded rod to hang from the ceiling instead of
the wall – use the factory installed threaded inserts.
To wire –
follow the wiring diagram (found inside wiring compartment).
The controls ship in the same box as the air curtain.
MOUNTING INSTRUCTIONS (General)
INDOOR MOUNTING – Environmental/ Insect/ Dust Control OUTDOOR MOUNTING
(Unheated Only) – Insect/Dust Control The Commercial High Performance 10 & the
Sanitation Certified High Performance 7 Air Curtains are designed to be an
effective barrier against cold drafts in the winter and hot air in the summer,
flying insects and airborne contaminants.
To achieve optimum protection, the air curtain should be mounted on the inside
of the building, flush 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 sufficient 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 or Table 2.
| MODEL | Net Weight |
|---|
CHD10
Ambient| CHD10
Electric
CHD10-1036| 50| 52
CHD10-1042| 52| 55
CHD10-1048| 53| 56
CHD10-1060| 54| 63
CHD10-2060| 70| 96
CHD10-2072| 84| 104
CHD10-2084| 104| 110
CHD10-2096| 106| 112
CHD10-3096| 120| 148
CHD10-2108| 107| 119
CHD10-3108| 150| 156
CHD10-2120| 108| 126
CHD10-3120| 152| 159
TABLE 1 – CHD10 Unit Weight
MODEL| Net
Weight
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SHDO7
Ambient
SHD07-1036| 50
SHD07-1042| 52
SHD07-1048| 53
SHD07-2060| 70
SHD07-2072| 84
SHD07-2084| 104
SHD07-2096| 106
SHD07-3108| 150
SHD07-3120| 152
TABLE 2 – SHD07 Unit Weight
IMPORTANT: A minimum of 4” is required above the top of the air curtain for
the installation and removal of the inlet screen and access to electrical
compartment.
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 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 effectiveness of the air curtain will be greatly reduced. See
Figure 2.
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 flush 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. Do not block (obstruct) the air intake grill. Insufficient airflow can
cause the unit to overheat.
D. Electric heated air curtain(s) shall:
- Have a minimum clearance of at least 4” between the sides and top of the air curtain and any combustible material.
- Have a minimum clearance of at least 6’ between the bottom of the air curtain and the floor.
- Be installed Indoors Only.
E. Proceed to either Section III – Wall Mounting or Section
IV – Suspended Mounting
WALL MOUNTING
If a wall mounting plate was ordered with the air curtain, proceed to B. Wall Mounting – using the wall mounting plate (sold separately), otherwise proceed:
A. WALL MOUNTING – without wall mounting plate
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Making sure that the air curtain is centered over the opening, determine the exact mounting location of the air curtain.
NOTE : A minimum of 4” is recommended above the air curtain to provide clearance for installation and removal of the cover housing. -
Remove the screen by removing screws from the top, bottom and front of the air curtain, and slide the screen away from the blower assembly.
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The air curtain is equipped with four 1⁄4” keyhole mounting slots on the back of each unit for wall mounting. The slots are spaced 1” from the ends, and 3/4” and 7” from the top. See Figure 4.
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Mark the wall according to the length of the air curtain. The wall must provide sufficient support for the air curtain. If the keyhole slots are not located where suitable support is available, drill new holes in the unit back plate where space is available.
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The mounting hardware (supplied by others) must be capable of supporting a minimum of three times the net weight of the air curtain. See Weight Chart, Table 1 or Table 2.
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Keyhole Mounting: Install the mounting hardware (supplied by others), allowing for space to hang the air curtain by not fully tightening. Without touching the blower wheels, lift and slip the air curtain over the mounting hardware by grasping the inlet rings of the blower housing. Tighten the mounting hardware. See Figure 5.
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Drilled Mounting Holes: Lift the air curtain by grasping the inlet rings on the blower housing, without touching the blower wheels, and install the mounting hardware (supplied by others) through the drilled holes.
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Reinstall the screen using hardware removed in Step 2.
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Proceed to Section V – Electrical Connections.
B. WALL MOUNTING – using the wall mounting plate (sold separately)
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PREPARATION
a. Position and center the mounting plate over the door opening. The mounting plate must be positioned with the “Z” lip on top. Drill mounting holes on the mounting plate. See Figure 6.
b. Mark the wall in the center of each mounting plate hole. The wall must provide sufficient support for the air curtain. The mounting hardware (supplied by others) must be capable of supporting a minimum of three times the net weight of the air curtain. See Weight Chart, Table 1 or Table 2. If the location of the marks on the wall do not provide suitable support, mark and drill additional holes.
c. Drill the four holes as marked on the wall and attach the mounting plate with anchors (if used) and the four mounting screws (provided by others).
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ATTACHING THE AIR CURTAIN TO THE MOUNTING PLATE
a. Raise the air curtain over the door (air discharge nozzle facing down) and on to the mounting plate. First, tilt the unit upward matching the rectangular openings to the “Z” lip on the mounting plate. See Figure 7.
b. Lower the air curtain into place, allowing it to rest on the lower lip of the mounting plate.
c. After the air curtain is securely attached to the mounting plate, re- install the two (2) locking screws at the bottom corners. See Figure 7.
SUSPENDED MOUNTING
A. For top mounting using suspension rods, four (4) factory installed 1/4”
threaded inserts are located in the top of the air curtain. See Figure 8.
B. Install 1/4” threaded rods, or other suitable hardware at a location with
sufficient support for the air curtain. The mounting hardware (supplied by
others) must be capable of supporting a minimum of three times the net weight
of the air curtain. See Weight Chart, Table 1 or Table 2.
C. Attach threaded rods, or other suitable hardware to the top mounted
threaded inserts.
D. Proceed to Section V – Electrical Connections
ELECTRICAL CONNECTIONS
All electrical wiring and connections MUST be performed by qualified personnel
in accordance with the latest edition of the National Electrical Code
ANSI/NFPA No. 70 or, in Canada, the Canadian Electrical Code, Part 1-C.S.A.
Standard C22.1 and local codes and regulations.
MAKE SURE THE CORRECT VOLTAGE AS MARKED ON THE UNIT IS USED.
A. A separate line voltage
supply with a suitable branch circuit protection device should be run directly
from the main electrical panel to the unit. A disconnect switch for each
branch circuit is a required part of this installation.
See the voltage label on the unit for circuiting and total electrical load.
The wiring diagram is located in the wiring compartment.
B. All field wiring must be copper with a minimum insulation of 60°C within
approved conduit. If any of the wire supplied with the unit must be replaced,
it must be replaced with copper wiring with a minimum insulation of 90°C.
C. Remove the wiring compartment cover on top of the air curtain. See Figure
9.
D. The top of the air curtain has knockouts on each side of the wiring
compartment. Remove the required knockout 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 curtains provided with the optional
remote thermostat, mount and wire the thermostat according to thermostat
instructions and wiring diagram.
For Electrically heated air curtains proceed to Section V – Field Connections,
otherwise proceed to Section VI – Airflow Adjustments
FIELD CONNECTIONS
A. ELECTRICALLY HEATED MODELS
The heater circuit may be controlled by a remote thermostat, manually through
a unit mounted or remote mounted three position – fan only/off/fan with heat
switch. Overheating protection is provided by auto reset thermal cutouts built
into the blower assembly (see wiring diagram). Proceed to Section VII –
Operating Instructions.
OPERATING INSTRUCTIONS
A. GENERAL OPERATION
Air curtain operation may be divided into four areas: control package, fan
activation, fan speed selection, and heat activation. Depending on the type of
controls ordered one or more of the following may be applicable. The air
curtain must be properly installed before it is used.
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Control packages control the air curtain’s sequence of operation. Unit modes/control packages are built into the unit and may not be changed in the field.
Refer to your wiring diagram for specifics about activation connections and sequence of operation.
a. Basic Control Package – The unit is activated by a door or selector switch. Either switch may be line voltage or low voltage (24V).
b. Deluxe Control Package – The unit is activated by a door or selector 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 a door or selector switch AND a thermostat to provide supplemental heating.
NOTE : Not available with 575V motors. -
Unheated air curtains will have the fans activated by a door or selector switch or sensor. The unit may be single speed and require no fan speed selector (On/Off ), or may have three fan speeds which require either a unit or remote mounted switch (Off, High, Med, Low).
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Heated air curtains will have fans activated by a door or selector switch or sensor, but may also be activated by the thermostat in Comfort Plus Mode. The unit has
three fan speeds which can be set by either a unit or remote mounted switch (Low, Med, High, Off, Low heat, Med Heat, High Heat). -
Heat activation is controlled by either a unit or remote mounted thermostat, and a unit or remote mounted switch.
B. AIR STREAM ADJUSTMENT
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With the air curtain operating and the door in its full open position, check to see that nothing is obstructing the airflow at the discharge nozzle vanes.
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Find the air stream split location. Hold a handkerchief by its corners, approximately 12” above the floor. 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 10. The split location is indicated where the handkerchief is vertical with minimal or no fluttering. -
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.
MAINTENANCE & CLEANING
CAUTION: ELECTRIC SHOCK HAZARD Disconnect power whenever servicing unit. More
than one disconnect may be required to de-energize unit.
Keep your air curtain operating at peak efficiency by cleaning the blower
wheels, motor(s) and intake grill. 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 environment is not that dirty, the unit(s) should be
scheduled for cleaning a minimum of once every (6) months.
A. PERFORMING PREVENTIVE MAINTENANCE
- Disconnect and lockout power to the unit.
- Remove the intake screen by removing the machine screws located around the bottom, front and top of the screen See Figure 11.
- Vacuum and scrape (if necessary) to remove the build-up of dirt and debris. The motor(s) are permanently lubricated and require no additional lubrication. Re-install the cover and intake grill.
- Switch the power on after cleaning.
CAUTION : STAND CLEAR OF THE UNIT OR WEAR SAFETY GOGGLES AS LOOSE DEBRIS MAY BE PRESENT AND MAY EXIT THE NOZZLE.
SERVICE
Any service performed on the air curtain MUST be done by qualified 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 lubricated, sealed, sleeve bearings and require no
maintenance.
TROUBLESHOOTING
| SYMPTOMS | CAUSE | REMEDY |
|---|---|---|
| NO AIR | •Electrical Power supply line open (no power) |
•Fuse blown/druit breaker tripped
•Motor overload tripped
•Failed switch| •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
MOTOR RUNNING/FANS ARE NOT ROTATING|
•Broken or fan hub
•Shaft rotating inside fan
•Broken/Loose coupling| •Replace fan
•Tighten set screws/tighten fan on shaft
•Re I lace/Ti 1 hten cm I lint
ELECTRICAL CONTROLS NOT FUNCTIONING WHEN| DOOR IS OPEN
•Selector switch is in off position
•Door limit switch not operating| •Turn switch to “ON”position
•Repair or replace limit switch
MINIMUM| •Air directional discharge vanes misadjusted
•Inadequate intake clearance
•Blower motor operates below speed
•Fan rubbing against housing
•Fan wheels clogged with dirt| •Adjust vanes to proper position, see
instructions
•Move air curtain or remove obstruction Provide adequate space for air curtain
•Improve voltage
•Free fan from housing
•Clean and vacuum fan wheels
AIR IS NOT
HITTING
FLOOR| •Air stream too weak
•Air stream hits obstruction
•Negative pressure| •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 make-up air
UNEVEN AIR| •Shaft rotating inside fan
•One motor not operating| •Tighten set screws/Replace fan
•Repair or replace motor/Check electrical connections
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 SYMPTOMS| •Adjust nozzle angle to outside
•Add auxiliary heat to overcome wind chill
•Adjust discharge angle back into building
ELECTRICALLY HEATED MODELS
NO HEAT| • Switch turned to “OFF” 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
• Defective switch| • Turn switch on
• Change thermostat setting
• Correct airflow problem; replace coils
• Replace automatic thermal cutout
• Reset manual thermal cutout
• Replace switch
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NOT ENOUGH HEAT| • Thermostat in wrong location – thermostat too close to
discharge
• Improper voltage
• Thermostat not set properly| • Move thermostat away from air stream
• Supply proper voltage
• Change temperature setting
TOO MUCH HEAT| • Thermostat in wrong location
• Thermostat not set properly
• Insufficient air over coil
• Improper voltage| • Move thermostat closer to air stream
• Change temperature setting
• Remove restriction on intake
• Supply proper voltage
WARRANTY
erner International (“The Company”) warrants all new equipment to be free of
defects in workmanship and material for a period of five years (5 years) on
unheated models and two years (2 years) on heated models from the original
date of shipment, provided the equipment has been properly cared for,
installed and operated in accordance with the limits specified on the
nameplate and The Company’s instructions. All warranted parts will be replaced
at no charge for a period of six months from date the parts were shipped.
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 qualified 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 benefit 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
New Castle, Pennsylvania
724-658-3551 •
1-800-245-4455 •
www.Berner.com
Berner reserves the right to alter specifications without prior notice.
© Copyright 2022 Berner International M
MADE IN U.S.A.
Documents / Resources
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BERNER CHD10 Air
Curtain
[pdf] Instruction Manual
CHD10, SHD07, CHD10 Air Curtain, CHD10, Air Curtain, Curtain
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