Qmark Environmental Electric Heated User Manual
ENVIRONMENTAL SERIES
®
15 3/4”
1
3”
Refer to individual model numbers
f
or unit width
8
1/4”
4 7/8”
11 7/8”
ELECTRICALLY HEATED AIR CURTAINS
8 KW THROUGH 48 KW
36” THROUGH 144”
Installation & Maintenance Instructions
Dear Owner,
Congratulations! Thank you for purchasing this new air curtain manufactured by M arley Engineered Products. You have made
a wise investment selecting the highest quality product in the industry. Please carefully read the installation and
maintenance instructions shown in this m anual. You should enjoy years of efficient serv ice with this product from Marley
Engineered Products... the industry’s leader in design, m anufacturing, quality and service.
... The Employees of Marley Engineered Products
WARNING
Read Carefully - These instructions are written to help you
prevent difficulties that might arise during installation of the
unit. Studying the instructions first may save you considerable time and money later. Observe the following procedures, and cut your installation time to a minimum.
CAUTION - TO REDUCE RISK OF FIRE AND ELECTRIC
SHOCK OBSERVE THE FOLLOWING:
1. Disconnect all power coming to the unit at main service panel
before wiring or servicing. Lock service panel to prevent power
from being switched on accidentally.
NOTE: Do not depend upon a thermostat or other switch as the sole
means of disconnecting power when installing or servicing the unit.
Always disconnect power at the main service panel as described
above.
2. All wiring should be done by a qualified electrician, using copper
wire only and in accordance with the National Electrical Code
(NEC), all applicable code and ordinances, including fire rated
construction, and all sections of this manual. Any variance voids
the warranty and may create unsafe conditions.
3. To prevent the risk of electric shock, the unit must be properly
grounded. This should be accomplished by connecting a bonding conductor between the disconnecting means and the
grounding lug provided in the Main Control Box of the unit. Each
cabinet wiring compartment is provided with grounding lugs for
connecting bonding conductors between each cabinet and the
Main Control Box. To ensure a proper ground, the grounding
means must be tested by a qualified electrician.
4. Verify the power supply voltage coming to unit matches the ratings printed on the heater nameplate before energizing.
5. This unit can be hot when in use. To avoid burns, do not let bare
skin touch hot surfaces.
6. Do not insert or allow foreign objects to enter any ventilation or
exhaust opening as this may cause an electric shock, fire or
damage to the unit.
7. Do not block air intakes or exhaust in any manner. Keep combustible materials, such as crates, drapes, etc., away from air
curtain.
8. This unit has hot and arcing or sparking parts inside. Do not use
it in areas where gasoline, paint or flammable liquids are used
or stored.
9. Use this unit only as described in this manual. Any other use
not recommended by the manufacturer may cause fire, electric
shock, or injury to persons. If you have questions contact the
manufacturer.
10. This unit is not approved for use in corrosive atmospheres such
as marine, green house or chemical storage areas.
!
READ AND SAVE THESE INSTRUCTIONS
1
Environmental Series Specifications and Performance
MODEL NOZZLE Volts Heater # MOTORS @ OF CONTROL MAX VEL AVG VEL AIRFLOW SHIPPING
NUMBER WIDTH (IN) AC Watts BTU/HR HP CABINETS VOLTAGE (FPM) (FPM) (CFM) WEIGHT (LBS)
1/2 HP Models
E36081#50HE 36 # 8000 27,320 1 @ 1/2 1 24 3800 3040 2460 93
E42081#50HE 42 # 8000 27,320 1 @ 1/2 1 24 3800 2890 2730 98
E48081#50HE 48 # 8000 27,320 1 @ 1/2 1 24 3800 2815 3040 105
E60081#50HE 60 # 8000 27,320 1 @ 1/2 1 24 3800 2740 3350 117
E72162#50HE 72 # 16000 54,640 2 @ 1/2 2 24 3800 3040 4920 177
E84162#50HE 84 # 16000 54,640 2 @ 1/2 2 24 3800 2910 5460 181
E96162#50HE 96 # 16000 54,640 2 @ 1/2 2 24 3800 2815 6080 189
E108243#50HE 108 # 24000 81,960 3 @ 1/2 3 24 3800 3040 7380 261
E120243#50HE 120 # 24000 81,960 3 @ 1/2 3 24 3800 2950 7920 273
E132243#50HE 132 # 24000 81,960 3 @ 1/2 3 24 3800 2875 8540 285
E144243#50HE 144 # 24000 81,960 3 @ 1/2 3 24 3800 2815 9120 297
E36121#50HE 36 # 12000 40,980 1 @ 1/2 1 24 3800 3040 2460 93
E42121#50HE 42 # 12000 40,980 1 @ 1/2 1 24 3800 2890 2730 98
E48121#50HE 48 # 12000 40,980 1 @ 1/2 1 24 3800 2815 3040 105
E60121#50HE 60 # 12000 40,980 1 @ 1/2 1 24 3800 2740 3350 117
E72242#50HE 72 # 24000 81,960 2 @ 1/2 2 24 3800 3040 4920 177
E84242#50HE 84 # 24000 81,960 2 @ 1/2 2 24 3800 2910 5460 181
E96242#50HE 96 # 24000 81,960 2 @ 1/2 2 24 3800 2815 6080 189
E108363#50HE 108 # 36000 122,940 3 @ 1/2 3 24 3800 3040 7380 261
E120363#50HE 120 # 36000 122,940 3 @ 1/2 3 24 3800 2950 7920 273
E132363#50HE 132 # 36000 122,940 3 @ 1/2 3 24 3800 2875 8540 285
E144363#50HE 144 # 36000 122,940 3 @ 1/2 3 24 3800 2815 9120 297
E36161#50HE 36 # 16000 54,640 1 @ 1/2 1 24 3800 3040 2460 93
E42161#50HE 42 # 16000 54,640 1 @ 1/2 1 24 3800 2890 2730 98
E48161#50HE 48 # 16000 54,640 1 @ 1/2 1 24 3800 2815 3040 105
E60161#50HE 60 # 16000 54,640 1 @ 1/2 1 24 3800 2740 3350 117
E72322#50HE 72 # 32000 109,280 2 @ 1/2 2 24 3800 3040 4920 177
E84322#50HE 84 # 32000 109,280 2 @ 1/2 2 24 3800 2910 5460 181
E96322#50HE 96 # 32000 109,280 2 @ 1/2 2 24 3800 2815 6080 189
E108483#50HE 108 # 48000 163,920 3 @ 1/2 3 24 3800 3040 7380 261
E120483#50HE 120 # 48000 163,920 3 @ 1/2 3 24 3800 2950 7920 273
E132483#50HE 132 # 48000 163,920 3 @ 1/2 3 24 3800 2875 8540 285
E144483#50HE 144 # 48000 163,920 3 @ 1/2 3 24 3800 2815 9120 297
# - INDICATE VOLTAGE: 3 = 208V 3-PH, 4 = 240V/208V 3-PH, 5 = 480V 3-PH.
Note: Multiply listed wattage by .75 for actual 208V rating. Maximum 15 kilowatts per cabinet at 240V.
NUMBER AIR DELIVERY @ NOZZLE OUTLET APPROX.
3/4 HP Models
E42081#75HE 42 # 8000 27,320 1 @ 3/4 1 24 4850 3685 3480 108
E48081#75HE 48 # 8000 27,320 1 @ 3/4 1 24 4850 3595 3880 115
E60081#75HE 60 # 8000 27,320 1 @ 3/4 1 24 4850 3395 4580 131
E72162#75HE 72 # 16000 54,640 2 @ 3/4 2 24 4850 3880 6280 195
E84162#75HE 84 # 16000 54,640 2 @ 3/4 2 24 4850 3715 6960 208
E96162#75HE 96 # 16000 54,640 2 @ 3/4 2 24 4850 3595 7760 221
E108243#75HE 108 # 24000 81,960 3 @ 3/4 3 24 4850 3880 9420 288
E120243#75HE 120 # 24000 81,960 3 @ 3/4 3 24 4850 3765 10100 301
E132243#75HE 132 # 24000 81,960 3 @ 3/4 3 24 4850 3670 10900 314
E144243#75HE 144 # 24000 81,960 3 @ 3/4 3 24 4850 3595 11640 327
E42121#75HE 42 # 12000 40,980 1 @ 3/4 1 24 4850 3685 3480 108
E48121#75HE 48 # 12000 40,980 1 @ 3/4 1 24 4850 3595 3880 115
E60121#75HE 60 # 12000 40,980 1 @ 3/4 1 24 4850 3395 4580 131
E72242#75HE 72 # 24000 40,980 2 @ 3/4 2 24 4850 3880 6280 195
E84242#75HE 84 # 24000 81,960 2 @ 3/4 2 24 4850 3715 6960 208
E96242#75HE 96 # 24000 81,960 2 @ 3/4 2 24 4850 3595 7760 221
E108363#75HE 108 # 36000 81,960 3 @ 3/4 3 24 4850 3880 9420 288
E120363#75HE 120 # 36000 122,940 3 @ 3/4 3 24 4850 3765 10100 301
E132363#75HE 132 # 36000 122,940 3 @ 3/4 3 24 4850 3670 10900 314
E144363#75HE 144 # 36000 122,940 3 @ 3/4 3 24 4850 3595 11640 327
E42161#75HE 42 # 16000 122,940 1 @ 3/4 1 24 4850 3685 3480 108
E48161#75HE 48 # 16000 54,640 1 @ 3/4 1 24 4850 3595 3880 115
E60161#75HE 60 # 16000 54,640 1 @ 3/4 1 24 4850 3395 4580 131
E72322#75HE 72 # 32000 54,640 2 @ 3/4 2 24 4850 3880 6280 195
E84322#75HE 84 # 32000 54,640 2 @ 3/4 2 24 4850 3715 6960 208
E96322#75HE 96 # 32000 109,280 2 @ 3/4 2 24 4850 3595 7760 221
E108483#75HE 108 # 48000 109,280 3 @ 3/4 3 24 4850 3880 9420 288
E120483#75HE 120 # 48000 109,280 3 @ 3/4 3 24 4850 3765 10100 301
E132483#75HE 132 # 48000 163,920 3 @ 3/4 3 24 4850 3670 10900 314
E144483#75HE 144 # 48000 163,920 3 @ 3/4 3 24 4850 3595 11640 327
# - INDICATE VOLTAGE: 3 = 208V 3-PH, 4 = 240V/208V 3-PH, 5 = 480V 3-PH.
Note: Multiply listed wattage by .75 for actual 208V rating. Maximum 15 kilowatts per cabinet at 240V.
2
CAUTION
THIS HEATED AIR CURTAIN AND ITS SUB-ASSEMBLIES AND
CONTROLS SHOULD BE INSTALLED BY QUALIFIED PERSONNEL, USING COPPER WIRES AND IN ACCORDANCE
WITH THE NATIONAL ELECTRICAL CODE (NEC) AND ALL
APPLICABLE LOCAL CODES AND ORDINANCES.
NOTE: A MAIN DISCONNECT OR CIRCUIT BREAKER IS
REQUIRED AHEAD OF THE MAIN PANEL OF THIS HEATED
AIR CURTAIN.
!
WARNING
ALWAYS DISCONNECT POWER AT THE MAIN DISCONNECT
OR CIRCUIT BREAKER BEFORE INSTALLING OR SERVICING THIS HEATED AIR CURTAIN. IF THE POWER DISCONNECT IS OUT OF SIGHT OR IS LOCATED GREATER THAN
50 FEET FROM THE MAIN PANEL OF THIS HEATED AIR
CURTAIN, LOCK THE MAIN DISCONNECT IN THE OPEN
POSITION AND TAG IT TO PREVENT UNEXPECTED APPLICATION OF POWER. FAILURE TO DO SO COULD RESULT
IN FATAL ELECTRICAL SHOCK.
!
When facing the inlet grille of the unit, the main control box is
attached on the right side of the combination. A maximum of three
supplementary 60 amp rated circuit breakers (or 60A load fuses)
will be provided for units with full load rating greater than 48 amps.
Field control terminal blocks are also provided with the Main
Control box. A class 2 certified, 24V secondary, 75 VA control
transformer is provided. Class 2 wiring may be used for controls
but it is recommended to use Class 1 wiring for controls since
these are usually located in a commercial-industrial environment.
The load on the thermostat will always be one small relay (4VA) for
heat and another relay for the fan circuit whether the unit is a single, a double or a triple cabinet installation. Any standard low voltage (24V) heating thermostat may be used.
On the Main Control Panel are three indicator lights. These lights
serve the following functions:
Top Light - Power is on to the unit.
Middle Light - The heating elements are on in the unit.
Bottom Light - The fan is on in the unit.
If the “HEAT ON” light is lit at the Main Control Box, the indicator
light at each cabinet control compartment should also be lit. The
cabinet with an unlit light in this instance will need investigation.
Either the bulb is burned out or the automatic reset protective
device in this cabinet has functioned and taken the heating contactor out of circuit. The airflow should also be checked on this
cabinet. The air passageways may be blocked or the blower
wheel is loose or turning in the wrong direction.
!
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT USE THIS AIR CURTAIN WITH ANY SOLID STATE
SPEED CONTROL DEVICE.
GENERAL INFORMATION
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 contaminants. Air curtains maintain 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.
The heated air curtains covered by this Installation & Maintenance
Instructions are permanently installed units intended for permanent
connection to a single electrical supply source and are intended to
be located over doorways at least 7 ft. above the floor. The units
may be installed with zero minimum clearances from combustibles
on three sides of the unit and the minimum clearance from the
adjacent wall to the hinged door of the main control box is 16 inches.
Each cabinet employs a dual shaft motor, driving two blower type
air circulators causing air flow over a heater assembly. The heater
assembly consists of two sections, one section per blower. The
heater assembly is controlled by contactors with 24 volt AC low
voltage coils. A replaceable thermal cut-off or one shot protective
device is provided on each leg of each assembly. Each section is
provided with an automatic reset overheat protective device. In
case of overheating, the automatic resets will shut off only the heat
contactor for the heater assembly in the cabinet associated with it
and not the fan contactor and thus airflow should continue. Each
cabinet in a multiple cabinet installation are independent of each
other as far as the operation of the auto resets are concerned.
Each cabinet will have its own control compartment with a heating
contactor with an indicator light and a fan contactor and the
required control terminals for interconnection.
!
WARNING
DURING INITIAL POWER UP OF HEATED AIR CURTAINS,
HINGED CONTROL DOOR MUST BE IN CLOSED POSITION
FOR CORRECT OPERATINO OF THE PRESSURE
DIFFERENTIAL SWITCH. ENERGIZING UNIT WITH DOOR
OPEN MAY CAUSE PERMANENT DAMAGE TO HEATING
ELEMENTS. SEE DETAILS BELOW.
Initial Start Up - Checking For Correct Fan Motor Rotation:
On all three phase units, it is essential for the units to be checked
for correct fan rotatino since it is always possible the motor could
be rotating backwards. Before energizing the units, make sure
units are fully assembled, all wiring is correct and cabinet doors
are closed. Energize units and observe air flow from exhaust. If
correct, the discharge airflow will be strond and the heater elements will come on in a short time to provide heaterd air. All three
indicator lights will be on when the heater and fan are on.
If motor rotation is backwards, interchange any two wires to the
motor and check to see that the motor rotation is correct.
When Removing Blower Assembly From Cabinet(s):
If it becomes necessary to remove the blower assembly from the
cabinets, care must be given to assure the sensing tube for the
pressure differential switch is reassembled correctly and in the
poper locations.
CAUTION
INCORRECT INSTALLATION OF THESE TUBES WILL RESULT
IN THE UNITS NOT OPERATING PROPERLY AND COULD
CAUSE PERMANENT DAMAGE TO UNITS
The sensing tube is provided with an in-line quick connector
located near the blower assembly so the tube can be easily disconnected and reconnected. This is the only portion of the tube
that should be disturbed during this process. To separate, hold
the body of the connector and push the release ring towards the
center of the connector body and then pull the tube from the connector. To reconnect, push the tube into the connector unitil it is
secured in place.
!
3
Important Note: The portion of the sensing tube that attaches to
the blower has an opening that must face the blower and be positioned near the center of the blower inlet. This should not be
removed or disturbed during the romoval and reinstallation of the
blower assembly into the cabinet. After reasembly, check to make
sure this sensing tube has not been damaged or dislodged. In the
control compartment, the sensing tube attaches to the “LOW” port
on the pressure differential switch.
Sensing tube location
Quick connector
4. Unscrew six (6) knurled nuts and remove air intake grille. (See
Figure 3)
5. Carefully disconnect motor electric cord from socket and plug
assembly and remove two wing nuts on blower base. (See
Figure 4)
6. Carefully disconnect pressure switch hose quick connector at
blower by holding body of connector and pushing the release
ring towards the center of connector while pulling the hose to
disconnect.
7. To remove motor blower assembly, lift from rear of motor housing to prevent damage and misalignment to shaft and blower
wheels. Once the motor/blower assembly is removed, the heater
assembly will be accessed.
NOTE: After unpacking unit, inspect carefully for any damage that
may have occurred during transit. Check for loose, missing or damaged parts. The hinged cabinet wiring compartment cover should
also be opened to inspect the components and wiring inside.
8. Make sure the open coil elements do not touch any metal part
and all the porcelains holding the elements are not broken and
are in their proper place.
Figure 3: Sensing Tube Location
When powering the unit for the first time, always check the wiring
for correctness and tightness, make sure the power supply
matches the nameplate rating of the unit, make sure the sensing
tubes of each PD switch are in the proper position and location
and all the cabinet compartment covers are closed. It is also recommended that the front grille covers should be in place. This will
make sure the pressure switch will sense enough vacuum and
turn on heater.
Figure 3
UNPACKING
For Single Cabinet Units: 36”, 42”, 48” and 60”
1. With packaged unit on the floor, carton arrows should point
upward.
2. Carefully remove staples from top of carton and fold back sides.
3. Carefully remove cabinet from carton by lifting out unit using finger holes in styrofoam side inset and place on work surface.
CAUTION: Do not attempt to lift this air curtain by its louver or
damage may result.
!
WARNING
MAKE SURE NO COMBUSTIBLE MATERIAL NOR ANY
OTHER FOREIGN MATERIAL FALLS ON THIS HEATING
ELEMENT CAVITY WHILE IT IS EXPOSED WITH THE
MOTOR/ BLOWER ASSEMBLY OUT OF THE CABINET
For 2 Cabinet Units: 72”, 84” and 96” See Figure 5, Page 5
1. With packaged units on the floor, carton arrows should point
upward. Cartons are marked A & B.
2.
Follow Steps 2 through 8 for Single Cabinet Units.
NOTE: Cabinet A (left), Cabinet B (right). Carton labeled
Cabinet B will contain the Main Control Box and all harness
wires and parts bag to interconnect the two cabinets.
For 3 Cabinet Units: 108”, 120”, 132” and 144”
See Figure 6, Page 6
1. With packaged units on the floor, carton arrows should point
upward. Cartons are marked A, B and C.
2.
Follow Steps 2 through 8 for Single Cabinet Units.
NOTE: CabinetA (left), Cabinet B (center), Cabinet C (right).
Carton labeled Cabinet C will contain the Main Control Box
and harness wires and parts bag to interconnect the three
cabinets. Cabinet B may also have harness wires to interconnect to Cabinet A.
INSTALLATION
For Single Cabinet Units:
CAUTION
THE HARDWAREAND THE SUPPORTING STRUCTURE MUST
BE CAPABLE OF SUPPORTING A MINIMUM 150 LB LOAD.
!
4
Figure 4
NOTE:All installation should be done to meet local building codes.
1. Using template provided, determine mounting location.
2. Drill holes and attach mounting hardware (not included).
3. Mount cabinet on wall and securely tighten hardware.
4. Replace motor/blower assembly in cabinet. Pass pres-
sure switch hose through proper hole on blower base.
Reconnect motor electric cord plug assembly.
5. Attach pressure switch hose to quick connector at right
blower housing.
6. Secure two wing nuts on blower base.
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