Qmark High Velocity Electric Heated User Manual
HIGH VELOCITY SERIES
ELECTRICALLY HEATED AIR CURTAINS
8 KW THROUGH 48 KW
42” THROUGH 144”
SAVE THESE INSTRUCTIONS
Dear Owner,
Congratulations! Thank you for purchasing this new air curtain manufactured by Marley 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 manual. You should enjoy years of efficient service with this product from Marley
Engineered Products... the industry’s leader in design, manufacturing, quality and service.
... The Employees of Marley Engineered Products
Installation & Maintenance Instructions
®
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. Read all instructions before using this unit.
2. 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.
3. 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.
4. 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.
5. Verify the power supply voltage coming to unit matches the ratings printed on the heater nameplate before energizing.
6. This unit can be hot when in use. To avoid burns, do not let bare
skin touch hot surfaces.
7. 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.
8. Do not block air intakes or exhaust in any manner. Keep combustible materials, such as crates, drapes, etc., away from air
curtain.
9. 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.
10. 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.
11. This unit is not approved for use in corrosive atmospheres such
as marine, green house or chemical storage areas.
12. Do not use outdoors
WARNING
!
IMPORTANT INSTRUCTIONS
13”
15 3/4”
11 7/8”
4 7/8”
8 1/4”
Refer to individual model numbers
for unit width
High Velocity Series Specifications and Performance
NUMBER AIR DELIVERY @ NOZZLE OUTLET APPROX.
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
E42081#00HE 42 # 8000 27,320 1 @ 1 1 24 5250 3990 3770 109
E48081#00HE 48 # 8000 27,320 1 @ 1 1 24 5250 3890 4200 116
E60081#00HE 60 # 8000 27,320 1 @ 1 1 24 5250 3675 4960 132
E72162#00HE 72 # 16000 54,640 2 @ 1 2 24 5250 4200 6800 197
E84162#00HE 84 # 16000 54,640 2 @ 1 2 24 5250 3990 7540 210
E96162#00HE 96 # 16000 54,640 2 @ 1 2 24 5250 3890 8400 268
E108243#00HE 108 # 24000 81,960 3 @ 1 3 24 5250 4200 10200 291
E120243#00HE 120 # 24000 81,960 3 @ 1 3 24 5250 4075 10940 304
E132243#00HE 132 # 24000 81,960 3 @ 1 3 24 5250 3975 11800 317
E144243#00HE 144 # 24000 81,960 3 @ 1 3 24 5250 3890 12600 330
E42121#00HE 42 # 12000 40,980 1 @ 1 1 24 5250 3990 3770 109
E48121#00HE 48 # 12000 40,980 1 @ 1 1 24 5250 3890 4200 116
E60121#00HE 60 # 12000 40,980 1 @ 1 1 24 5250 3675 4960 132
E72242#00HE 72 # 24000 40,980 2 @ 1 2 24 5250 4200 6800 197
E84242#00HE 84 # 24000 81,960 2 @ 1 2 24 5250 3990 7540 210
E96242#00HE 96 # 24000 81,960 2 @ 1 2 24 5250 3890 8400 268
E108363#00HE 108 # 36000 81,960 3 @ 1 3 24 5250 4200 10200 291
E120363#00HE 120 # 36000 122,940 3 @ 1 3 24 5250 4075 10940 304
E132363#00HE 132 # 36000 122,940 3 @ 1 3 24 5250 3975 11800 317
E144363#00HE 144 # 36000 122,940 3 @ 1 3 24 5250 3890 12600 330
E42161#00HE 42 # 16000 122,940 1 @ 1 1 24 5250 3990 3770 109
E48161#00HE 48 # 16000 54,640 1 @ 1 1 24 5250 3890 4200 116
E60161#00HE 60 # 16000 54,640 1 @ 1 1 24 5250 3675 4960 132
E72322#00HE 72 # 32000 54,640 2 @ 1 2 24 5250 4200 6800 197
E84322#00HE 84 # 32000 54,640 2 @ 1 2 24 5250 3990 7540 210
E96322#00HE 96 # 32000 109,280 2 @ 1 2 24 5250 3890 8400 268
E108483#00HE 108 # 48000 109,280 3 @ 1 3 24 5250 4200 10200 291
E120483#00HE 120 # 48000 109,280 3 @ 1 3 24 5250 4075 10940 304
E132483#00HE 132 # 48000 163,920 3 @ 1 3 24 5250 3975 11800 317
E144483#00HE 144 # 48000 163,920 3 @ 1 3 24 5250 3890 12600 330
# - 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.
3/4 HP Models
E42081#30HE 42 # 8000 27,320 1 @ 3 1 24 7200 4760 4495 117
E48081#30HE 48 # 8000 27,320 1 @ 3 1 24 7200 4615 4980 125
E60081#30HE 60 # 8000 27,320 1 @ 3 1 24 7200 4320 5830 141
E72162#30HE 72 # 16000 54,640 2 @ 3 2 24 7200 5040 8160 211
E84162#30HE 84 # 16000 54,640 2 @ 3 2 24 7200 4760 8990 226
E96162#30HE 96 # 16000 54,640 2 @ 3 2 24 7200 4615 9960 241
E108243#30HE 108 # 24000 81,960 3 @ 3 3 24 7200 5040 12240 312
E120243#30HE 120 # 24000 81,960 3 @ 3 3 24 7200 4870 13070 327
E132243#30HE 132 # 24000 81,960 3 @ 3 3 24 7200 4730 14040 342
E144243#30HE 144 # 24000 81,960 3 @ 3 3 24 7200 4615 14940 357
E42121#30HE 42 # 12000 40,980 1 @ 3 1 24 7200 4760 4495 117
E48121#30HE 48 # 12000 40,980 1 @ 3 1 24 7200 4615 4980 125
E60121#30HE 60 # 12000 40,980 1 @ 3 1 24 7200 4320 5830 141
E72242#30HE 72 # 24000 40,980 2 @ 3 2 24 7200 5040 8160 211
E84242#30HE 84 # 24000 81,960 2 @ 3 2 24 7200 4760 8990 226
E96242#30HE 96 # 24000 81,960 2 @ 3 2 24 7200 4615 9960 241
E108363#30HE 108 # 36000 81,960 3 @ 3 3 24 7200 5040 12240 312
E120363#30HE 120 # 36000 122,940 3 @ 3 3 24 7200 4870 13070 327
E132363#30HE 132 # 36000 122,940 3 @ 3 3 24 7200 4730 14040 342
E144363#30HE 144 # 36000 122,940 3 @ 3 3 24 7200 4615 14940 357
E42161#30HE 42 # 16000 122,940 1 @ 3 1 24 7200 4760 4495 117
E48161#30HE 48 # 16000 54,640 1 @ 3 1 24 7200 4615 4980 125
E60161#30HE 60 # 16000 54,640 1 @ 3 1 24 7200 4320 5830 141
E72322#30HE 72 # 32000 54,640 2 @ 3 2 24 7200 5040 8160 211
E84322#30HE 84 # 32000 54,640 2 @ 3 2 24 7200 4760 8990 226
E96322#30HE 96 # 32000 109,280 2 @ 3 2 24 7200 4615 9960 241
E108483#30HE 108 # 48000 109,280 3 @ 3 3 24 7200 5040 12240 312
E120483#30HE 120 # 48000 109,280 3 @ 3 3 24 7200 4870 13070 327
E132483#30HE 132 # 48000 163,920 3 @ 3 3 24 7200 4730 14040 342
E144483#30HE 144 # 48000 163,920 3 @ 3 3 24 7200 4615 14940 357
# - 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.
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 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.
The heated air curtains covered by this Installation & Maintenance
Instructions are permanently installed units intended for permanent
connection to 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 36
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 keep on going.
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.
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 defective or the automatic reset protective
devices 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
wheels loose or turning in the wrong direction.
These air curtains are provided with a pressure differential switch
with the sensing tube located on the low pressure or suction side of
the switch and the other end on the inlet side of the blower. It has
been so located that when the motors are rotating in the wrong
direction there will not be enough suction to close the normally open
contact of the pressure switch and thus prevent the heating contactor and the associated pilot light from coming on. When this happens check for correct rotation of the motor and for anything else
that may cause the blower from delivering the required air flow.
UNPACKING
For Single Cabinet Units: 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.
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)
NOTE: Unit is shipped with styrofoam motor support block which
must be discarded at this time.
6. Carefully remove pressure switch hose from clamp on the right
blower.
!
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.
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
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT USE THIS AIR CURTAIN WITH ANY SOLID STATE
SPEED CONTROL DEVICE.
CAUTION
!
Figure 3
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.
For 2 Cabinet Units: 72”, 84” and 96” See Figure 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
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: Cabinet A (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:
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 right blower housing.
6. Secure two wing nuts on blower base.
7. Replace intake grille with louvers facing down and fasten
knurled nuts.
Field Power Wiring: Refer to Wiring Diagram and
Nameplate.
1. Before wiring be sure that available power supply, voltage,
phase and frequency corresponds to that specified on unit rating plate. In addition, make certain that service capacity is sufficient to handle load imposed by the heated air curtain.
2. Install all wiring, protection and grounding in accordance with
the National Electrical Code (NEC) and all local requirements.
3. Run proper size copper power supply conductors from the field
power supply disconnecting means (supplied by others) with
insulation rated 75 degrees C minimum (167º F) to the power
supply blocks provided at the Main Control Box of the air curtain. This field supplied disconnecting means shall be provided
to disconnect the heater, motor controller(s) and any supplementary overcurrent protective devices from all ungrounded
conductors. This disconnecting means shall be within sight of
the heater, motor controller(s) or supplementary protective
devices. If it is not within sight or is located greater than 50
feet, disconnecting means shall be capable of being locked in
the open position.
4. The heater control box must have an unbroken electrical
ground from its Main Control Box to its field supplied disconnecting means to minimize personal injury in case an electrical
fault should occur.
5. Always refer to nameplate data and wiring diagram located on
the inside of the hinged cover of the main control box for
important information and other data before proceeding with
wiring of the unit.
NOTE: This heated air curtain is equipped with a step-down
transformer 24V control circuit. Any standard 24V heating thermostat with or without fan control may be used. Door switches
may be used to control the operation of the unit. A door switch
may be connected to control the operation of the fan only or it
can be connected in parallel with the heating thermostat to call
for fan and heat every time the door is opened. The thermostat
may call for fan and heat even when door is closed. The step
down transformer is a 75 VA approved Class 2 transformer and a
control knockout is provided with the control terminal blocks
spaced away from power wire to allow Class 2 wiring for controls
but it is recommended to use Class 1 wiring, especially to door
switches to protect it from physical damage in an industrial or
commercial environment.
6. Replace hinged cover of the main control box.
7. Unit is ready for operation.
8. Restore power to the unit. Call for heat through the thermostat
or through the door switch if supplied. Unit should run. Check
for correct air flow.
9. Inspect unit for excessive vibration during operation. If exces-
sive vibration is noticeable, disconnect power supply. Inspect
mounting installation and refer to “Trouble Shooting Chart” for
probable cause.
Field Control Wiring: Refer to Wiring Diagram.
!
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
Figure 4
CAUTION
!
THE HARDWARE AND THE SUPPORTING STRUCTURE MUST
BE CAPABLE OF SUPPORTING A MINIMUM 150 LB LOAD.
!
WARNING
ALL HEATED AIR CURTAINS SHOULD BE INSTALLED BY
QUALIFIED PERSONNEL.
!
WARNING
THE MOTORS OF THIS HEATED AIR CURTAIN HAVE AN
INTERNAL SELF RESETTING THERMAL OVERLOAD PROTECTOR. ALWAYS DISCONNECT FROM POWER SUPPLY
BEFORE SERVICING.
Styrofoam
support
block
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