15831-7
Motor Control Panel is included for all electric heated units. Thermostat is provided
for field installation. Provide motor control panels as follows:
1.
Mounting: Factory mounted on right hand side of air curtain housing.
2.
Mounting: Factory mounted on left hand side of air curtain housing.
3.
Electrical components UL/CUL listed.
F.
Motor Control Panels For Hot Water and Steam Heated Units: Recommended for all
three phase units and single phase units with combined motor capacities of more
than 1HP whenever a door limit switch is used to automatically start and stop the air
curtain. Provide motor control panels as follows:
1.
Mounting: Shipped loose to be field mounted.
2.
Mounting: Factory mounted on right hand side of air curtain housing.
3.
Mounting: Factory mounted on left hand side of air curtain housing.
4.
Provide with remote mount thermostat for field installation.
5.
Electrical components UL/CUL listed.
G.
Door-Activated Limit switch(s): Provide, field installed 250-Volts, 20 amps limit
switch to control air curtain(s) as follows; Automatic on/off control, activates air
curtain when door is opened and turns off when door is closed. Provide limit switch
for direct control one 1 HP or up to two 1/2 HP single phase motors without a
separate control panel. Provide a separate control panel for three phase motors
controlled by a limit switch.
1.
Type: Combination plunger/roller switch for swing and sliding doors.
a.
Provide limit switches with NEMA 1 (20 amps) ratings in locations
indicated.
b.
Provide limit switches with NEMA 4X (10 amps) ratings in locations
indicated.
c.
Provide limit switches with NEMA 4X (15 amps) ratings in locations
indicated.
d.
Provide limit switches with NEMA 7 (10 amps) ratings in locations
indicated.
2.
Type: Magnetic reed switch and actuator for swing and sliding doors.
Industrial floor mounted or surface mounted switches for roll up doors.
1.
Operation for Unheated Units: Automatic on/off control, on when door is
opened, off when door is closed.
2.
Operation for Heated Units: Automatic on when door is opened, off after time
delay period after door is closed, maintaining heat in the event door is opened
within delay time period. Field adjustable from 1 to 17 minutes.
H.
Provide mounting hardware as required for the opening.
PART 3 EXECUTION
3.1 EXAMINATION
A.
Verify that required utilities are in correct location and are of correct capacities for
specified products.
B.
Verify openings to receive air curtains are plumb, level, square, accurately aligned,
correctly located, and in tolerance.
C.
Examine surfaces to receive air curtains. If surface preparation is the responsibility
of another installer, notify Architect of unsatisfactory preparation before proceeding.
3.2 INSTALLATION
