Heated
Air Curtains
INSTALLATION & OPERATING INSTRUCTIONS & PARTS MANUAL
MODELS:
E3606-1325HFD, E3609-1325HFD
E3806-1325HFD, E3809-1325HFD
E4206-1325HFD, E4209-1325HFD
E4806-1325HFD, E4809-1325HFD
E6006-2325HFD, E6009-2325HFD
READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE, OR MAINTAIN THE PRODUCT DESCRIBED.
PROTECT YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION. FAILURE TO COMPLY WITH INSTRUCTIONS
COULD RESULT IN PERSONAL INJURY AND/OR PROPERTY DAMAGE!
RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.
REFER TO INDIVIDUAL MODEL NUMBERS
1
2
12 / ”
FOR UNIT WIDTH
7
8
11 / ”
3
4
15 / ”
Figure 2 Dimensions
Figure 1
Note that all dimensions are the same on all environmental
series units. Model number indicates width of unit.
(Example: E4800 indicates a 48” wide unit.)
Description
Air curtains produce a wall of continuously flowing air
that acts as a thermal barrier against outside air and
provides protection against insects, dust, odor, fumes
and other contaminant’s. Maintains interior conditioned
temperature by preventing heated or cooled air from
escaping through open doorways.
Heated air curtains are engineered to treat incoming
cold air at customers’ entrance areas. Used over front
door entrances, heated air curtains supplement existing
heat to prevent infiltration of colder outside air. Heated
units are not recommended for areas subject to high
winds.
Specifications and Performance
CFM AT NOZZLE
(HI/LOW)
MODEL
NUMBER
HEATER
VOLTAGE
MOTOR
VOLTAGE
HEATER
WATTS
HEATER
BTU/HR
HEATER
AMPS
MOTOR
SIZE
E3606-1325HFD
E3609-1325HFD
E4206-1325HFD
E4209-1325HFD
E4806-1325HFD
E4809-1325HFD
E6006-2325HFD
E6009-2325HFD
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
208/3
6000
9000
6000
9000
6000
9000
6000
9000
20,478
30,717
20,478
30,717
20,478
30,717
20,478
30,717
16.7
25.0
16.7
25.0
16.7
25.0
16.7
25.0
2025
2025
2360
2360
2700
2700
3375
3375
1/4HP
1/4HP
1/4HP
1/4HP
1/4HP
1/4HP
1/4HP
1/4HP
Note: For multiple unit installations, recommended spacing between units should be a minimum of 3-inches and a maximum of 6-inches.
Unit is allowed to extend beyond doorway width. Each unit must have individual power supply.
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Installation
1. Using template provided, determine mounting loca-
3. Run proper size copper power supply conductors from
the field power supply disconnects, (supplied by
others) with insulation rated minimum 75°C (167.0°F).
One set of conductors from 208VAC, 50/60Hz supply
source shall be routed through the 3/4 inch conduit
knockout, using a suitable knockout connected to the
contactor contact terminals marked L1, L2, L3.
4. The heater control box must have an unbroken
electrical ground to minimize personal injury if an
electrical fault should occur.
tion.
2. Drill holes and attach mounting hardware (not includ-
ed).
IMPORTANT: THE HARDWARE AND THE SUPPORT-
ING STRUCTURE MUST BE CAPABLE OF SUPPORT-
ING A MINIMUM 150 LB. LOAD.
NOTE: All installation should be done to meet local
building code.
3. Mount cabinet on wall and securely tighten hardware.
4. Replace motor/blower assembly in cabinet. Secure
two wing nuts on blower base. Reconnect motor
electric cord plug assembly & heater plug.
5. Replace intake grille with louvers facing down and
refasten knurled nuts.
FIELD CONTROL WIRING
Electric heater is equipped with a step-down transformer
for 24V control circuit. Thermostat model number RSV-
130-R-54 must be used to energize heater with the fan
motor. Connect thermostat wiring from thermostat to
control leads in heated air curtain control box by means
of conduit or equivalent. A 1/2 inch knockout is provided.
Class 1 wiring is required.
FIELD POWER WIRING
WARNING: ALL AIR CURTAINS SHOULD BE
INSTALLED BY QUALIFIED PERSONNEL.
5. Replace heater control box cover.
6. Unit is ready for operation.
7. Restore power.
1. Before wiring be sure that available power supply,
voltage, phase and frequency corresponds to that
specified on heater rating plate. In addition, make
certain that service capacity is sufficient to handle load
imposed by the equipment.
NOTE: Air curtain has high/low selector switch. See
Operation section for proper setting instructions.
8. Upon completion of all installation, inspect unit for
excessive vibration during operation. If excessive
vibration is noticeable, disconnect power supply.
Inspect mounting installation and refer to
Troubleshooting Chart for probable cause.
2. Install all wiring, protection and grounding in accor-
dance with the National Electrical Code (NEC) and
all local requirements.
WARNING: THIS FAN HAS AN INTERNAL SELF
RESETTING THERMAL OVERLOAD PROTECTOR.
ALWAYS DISCONNECT FROM POWER SUPPLY
BEFORE SERVICING.
HEATER SECTION
COLOR CODE
RE - RED
FIELD WIRING TO THERMOSTAT
WH - WHITE
BK/RD - BLACK W/ RED TRACER
YE - YELLOW
OR - ORANGE
BU - BLUE
THERMOSTAT
LEGEND
TERMINAL MARKING
TB
L1
HR - HEAT RELAY
TB - TERMINAL BLOCK
TR TRANSFORMER
PL - PILOT LIGHT
FL - FUSE LINK
TO POWER
L2 SUPPLY
HE - HEAT ELEMENT
L3
BU
GR
PLUG
Figure 5 - Wiring Diagram
3
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Operation
1. After power has been connected to unit, fans will start
NOTE: Air direction settings shown in Figures 6 & 7.
in either preset (high/low) speed selection.
NOTE: Cold air will try to escape near floor level.
Warm air will try to penetrate curtain near top of
doorway. Air flow can be controlled by direction of
nozzle louvers and by high/low settings.
2. Air velocity is controlled by selection of high or low
speed indicator. This feature allows the setting of air
velocity to individual desired performance and energy
efficiency.
4. For multiple unit applications (wide openings), mount
units a minimum of 3” apart to allow for proper air
intake and discharge.
3. Air direction at outlet can be controlled by adjustable
vanes at the nozzle which compensates for possible
draft conditions.
Figure 6 - Desired Air Flow
Adjustment for Temperature and
Humidity Control.
Figure 7 - Desired Air Flow Adjustment
for Insect and Dust Control.
Maintenance
WARNING: ALL ELECTRIC POWER MUST BE
DISCONNECTED WHEN INSTALLING OR SERVICING
THIS EQUIPMENT. MORE THAN ONE DISCONNECT
SWITCH MAY BE REQUIRED TO REMOVE POWER
FROM THE UNIT.
WARNING: ALWAYS DISCONNECT POWER SUPPLY
BEFORE SERVICING.
1. To remove motor/blower heater assembly, repeat
Steps 4, 5 and 6 in Unpacking section.
2. Place motor/blower assembly on workbench.
LUBRICATION
3. To replace blower wheel, remove the three slotted hex
head screws on outer blower ring assembly (See
Figure 8, Replacement Parts Illustration.) The wheel
is held onto shaft by two hex head screws.
Ball bearings are permanently lubricated and require no
further lubrication.
CLEANING
1. The air door cabinet may be wiped off with a damp
cloth. Do not allow motor to get wet. Do not use sol-
vents or harsh detergents.
NOTE: To re-assemble repeat steps 4 & 5 in
installation section page 3.
IMPORTANT: NOTE POSITION OR WHEELS TO
PREVENT RUBBING WHEN REPLACED.
NOTE: Keep air intake louvers clear of dirt and dust
accumulation which could affect performance.
4. To remove motor:
2. Check blower wheels for accumulated dirt twice a year
and clean. If disassembly is required, see GENERAL
SERVICING section.
a. Remove blower wheels. (See Step 3 above.)
b. Remove blower scrolI (six hex head screws).
c. Unscrew and remove motor mounts.
GENERAL SERVICING
5. Replace motor/blower assembly
WARNING: IF SERVICING IS REQUIRED, IT SHOULD
BE DONE BY QUALIFIED PERSONS ONLY.
4
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Troubleshooting Chart
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Fan inoperative
1. Blown fuse or open circuit breaker.
2. Electricity turned off.
3. Loose cord connection.
1. Replace fuse or reset circuit breaker.
2. Contact local power company.
3. Re-check all connections.
4. Replace.
4. Defective capacitor or motor.
Excessive noise
1. Wheel rubbing on housing.
2. Motor base or blower not securely
anchored.
1. Center wheel.
2. Tighten mounting bolts.
3. Replace motor.
3. Defective motor bearings.
Insufficient air flow 1. Improper voltage.
2. Outlet louvers closed.
1. Reconnect to proper voltage.
2. Open.
3. Intakes obstructed.
4. Dirty blower wheels.
3. Remove any obstruction.
4. Clean.
5. Motor rotating in reverse direction.
5. Reverse red and black power leads.
Fans cut out on
thermal overload
(self-resets)
1. Low voltage.
2. Obstruction to blower wheel.
1. Verify correct wire size.
2. Remove obstruction.
No heat
1. Fuse link open.
2. Heater element broken
3. Control Transformer
1. Replace with 4K4204H or 4K9204H.
2. Replace with proper Ga. and watts.
3. Replace with proper item.
* 120-220 volt models only.
5
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1.
Replacement Parts
For Air Curtain Cabinets
3
6
5
4
2
14
s (7)
12
11
16
13
15
8
10
9
9
2
6
3
8
4
5
Replacement Parts
For Heater Units
7
1C
1D
1A
1B
Figure 8 - Replacement Parts.
6
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Replacement Parts List For Air Curtain Cabinets
Key
Part Numbers for Cabinets (length)
No. Description
36"
38"
42"
48"
60"
1
2
3
4
5
6
Cabinet box assembly
ACCA36A
API3685
AP0002
ACL36
ACEB
ACFPSPC
ACCA38A ACCA42A ACCA48A
ACCA60A
API6085
AP0002
ACL60
Cabinet Intake Grille
Cabinet Intake grill knurled nut
Cabinet louver kit
Electric box
Electric box cover
API3885
AP0002
ACL38
ACEB
API4285
AP0002
ACL42
ACEB
API4885
AP0002
ACL48
ACEB
ACEB
ACFPSPC ACFPSPC ACFPSPC ACFPSPC
Replacement Parts For 120 Volt Single Phase Motor Blower Assemblies
Key
No.
7
Part Numbers
1/4HP
Description
Motor/Blower Assembly
120V 1-ph
ACMB125
ACMB225
ACMB325
ACFPSH
C1220
220V 1-ph
208-230/460V 3-ph
8
9
Switch plate cover
Rocker switch
10
11
Cord, female plug
Motor Assembly
ACW316
120V 1-ph
220V 1-ph
208-230/460V 3-ph
ACM1025
ACM2025
ACM3025
AP058
12
13
14
15
16
Resilient motor ring kit
Capacitor
ACCP1025
ACBH67
ACBW67R
ACBW67L
Blower housing
Blower wheel-right
Blower wheel-left
Replacement Parts List For Heater Units
REF.
DESCRIPTION
REPLACEMENT PARTS FOR 208V 3-PH HEATERS
NO.
1
6 KW
9 KW
QTY.
Wire Guards
A.
18”
12”
6”
APG0018
APG0012
APG0006
APG0002
APHC208-3
AP0018
APG0018
APG0012
APG0006
APG0002
APHC208-3
AP0018
-
-
-
-
1
1
B.
C.
D.
2”
2
3
4
5
6
7
8
Heater Control Box
Heater Transformer
Heater
Fan
RelayAP0020
AP0020
Heater Contactor
Heater Element Set
Heater Coil Fuse Link
Wall Thermostat
AP0021
APHE06208-3
AP0016
AP0021
APHE09208-3
AP0016
1
1
4
1
AP364860-T
AP364860-T
7
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LIMITED WARRANTY
All products manufactured by Marley Engineered Products are warranted against defects in workmanship and
materials for eighteen months from date of installation. This warranty does not apply to damage from accident,
misuse, or alteration; nor where the connected voltage is more than 5% above the nameplate voltage; nor to
equipment improperly installed or wired or maintained in violation of the product’s installation instructions. All claims
for warranty work must be accompanied by proof of the date of installation.
The customer shall be responsible for all costs incurred in the removal or reinstallation of products, including labor
costs, and shipping costs incurred to return products to Marley Engineered Products Service Center. Within the
limitations of this warranty, inoperative units should be returned to the nearest Marley authorized service center
or the Marley Engineered Products Service Center, and we will repair or replace, at our option, at no charge to you
with return freight paid by Marley. It is agreed that such repair or replacement is the exclusive remedy available
from Marley Engineered Products.
THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED, AND ALL
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH
EXCEED THE AFORESAID EXPRESSED WARRANTIES ARE HEREBY DISCLAIMED AND EXCLUDED FROM
THIS AGREEMENT. MARLEY ENGINEERED PRODUCTS SHALL NOT BE LIABLE FOR CONSEQUENTIAL
DAMAGES ARISING WITH RESPECT TO THE PRODUCT, WHETHER BASED UPON NEGLIGENCE, TORT,
STRICT LIABILITY, OR CONTRACT.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
exclusion or limitation may not apply to you. This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
For the address of your nearest authorized service center, contact Marley Engineered Products in Bennettsville,
SC, at 1-800-642-4328. Merchandise returned to the factory must be accompanied by a return authorization and
service identification tag, both available from Marley Engineered Products. When requesting return authorization,
include all catalog numbers shown on the products.
HOW TO ORDER REPAIR PARTS
In order to obtain any needed repair or replacement
parts, warranty service or technical information, please
contact Marley Engineered Products Service Center
toll-free by calling 1-800-642-HEAT.
SPX Corporation
470 Beauty Spot Rd. East
Bennettsville, SC 29512 USA
ECR 35189
03-02
Part No. 5200-2420-001
8
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