Qmark High Velocity Hot Water/Steam Heated Air Curtains - Manual (Page 3)

3
Installation
NOTE: ALL INSTALLATION SHOULD BE DONE TO MEET
LOCAL BUILDING CODES.
1. Using template provided, determine mounting location.
IMPORTANT: IN FREEZER APPLICATIONS, UNIT IS
ALWAYS
MOUNTED OUTSIDE (WARM SIDE) OF
FREEZER OR COOLER
2. Drill holes and attach mounting hardware (not included).
IMPORTANT: THE HARDWARE AND THE SUPPORT-
ING STRUCTURE MUST BE CAPABLE OF SUPPORT-
ING A MINIMUM 150 LB. LOAD.
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.
ELECTRICAL CONNECTIONS
WARNING: ALL AIR CURTAINS SHOULD BE INSTALLED
BY QUALIFIED PERSONNEL.
WARNING:
THIS FAN HAS AN INTERNAL SELF-
RESETTING THERMAL OVERLOAD PROTECTOR.
ALWAYS DISCONNECT FROM POWER SUPPLY BEFORE
SERVICING.
1. Connect motor per name plate to correct power supply.
Use adequate size wire for all branch and feeder runs.
2. Install all wiring, protection and grounding in accor-
dance with the National Electrical Code (NEC) and all
local requirements.
3. Remove two (2) screws holding the Outlet Box
Assembly in place. See Fig. A. Keep these screws. It
will be required to re-install the assembly in step 6.
4. Remove the Outlet Box Assembly to expose knockouts for
power supply wiring. Remove assembly be unlatching the
bottom of the assembly from the back of the cabinet. Put
assembly aside for now to make supply connections.
Lable on blower indicates voltage connection of motor
from factory. Compare with voltage on nameplate and
make sure the power supply to the disconnect that will
feed the unit are the same voltage.
5. Run wires from power supply disconnect to the outlet box.
Choose which knockout to use either from the back of the
cabinet or from the top of the cabinet. Use appropriate
wiring according to local code. Use a flexible connector to
allow for possible angle adjustments if necessary. You
may start connection of the power supply wire to the
internal wire leads with the cable attached to the outlet
box assembly. Use appropriate wire nuts (not provided).
There will be just the three wires for each of the three
phases to connect and the supply ground wire to the
green ground lead which is connected to cabinet ground.
6. Re-install outlet box assembly by latching the bottom first
and by using the two screws removed in step 3. Make
sure all wires and connectors are inside the outlet box.
Make sure no wire will be pinched between the outlet box
and the cabinet back wall, the cabinet top and the
cabinet right side panel.
7. From the outside of the cabinet on the top right corner,
remove three (3) screws. Keep these screws. It will be
needed to replace the outlet box cover. Carefully remove
outlet box cover. Inspect all wires and make sure all
connections are tight and the ground wires are properly
connected. Replace outlet box cover. Put power on the
the unit. Check for correct motor rotation. To change
motor rotation, interchange any two wires at the power
disconnect.
8. Unit is ready for operation.
9. Replace intake grille with louvers facing down and
refasten knurled nuts.
10. Upon completion of all installations, 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.
NOTES: Air Curtain Control
1. On/Off Control by hand – A three pole On/Off switch may
be used or the Supply Disconnect Switch may also be
used to put the unit on or off. A magnetic motor starter is
not required with manual On/Off control.
2. When automatic On/Off function is required, a Motor
Control Panel must be used. The Motor Control Panel
can be such that a micro switch may control the On/Off
function of the Panel. The micro switch may be any dry
contact switch or a thermostat. The panel may be chosen
such that the opening and closing of a door may control
the closing and opening of a single pole contact of a door
switch which in turn controls the On/Off of the contactor
in the Control Panel which will turn the Air Curtain motors
on and off.
3. These controls are all optional devices that are external
of the Air Curtain. These can be installed between the Air
Curtain and its Disconnect.
4. It is recommended all control devices to be used with
these Air Curtain units should be UL and or CSA
approved devices and all local codes be followed in their
use and installation.
CAUTION: MAKE SURE AMP RATING OF ANY CONTROL
DEVICE OR ON/OFF SWITCH EXCEEDS NAMEPLATE
AMP RATING OF MOTOR.