Pro-series Ducted Evaporative Cooler Use and Care Manual 3
INSTALLATION
CAUTION:
All electrical installations must comply with local
and national building & safety codes; all work must be performed
by qualified personnel only.
CAUTION:
Disconnect all electrical power to the cooler before
attempting to install, open, or service your cooler. If the cooler is
thermostatically controlled, the thermostat must not be used as
the power supply disconnect, as it may reset and start the unit
unexpectedly.
CAUTION:
If the cooler is supported by legs attached to each
corner, the middle of the cabinet where the two sections join
must be supported as well.
CAUTION:
Do not screw or drill within 6 inches of the bottom of
the wet section of the cooler, you could puncture the plastic
water reservoir.
WARNING:
Pump receptacles are for grounded evaporative
cooler pumps only. Do not plug any other electrical equipment
into the receptacles.
Even while routinely inspecting or servicing the inside, the cooler can
be accidentally started. Keep all personnel away from the cooler and
electrical supply when you are working on it. Before servicing or
cleaning unit, switch power off at the service disconnects. Do not turn
power to unit on until installation or service work is complete.
For maximum safety, make sure cooler cabinet, blower motor and
pump are properly grounded to a suitable ground connection as
required by all local and national codes.
Electrical Installation
THIS COOLER IS PRE-WIRED FOR 115 VOLT , 60 Hz POWER
ONLY.
NOTE: Improper voltage connections will void all warranties.
Mount Weatherproof Disconnect Switch Box
Located inside the parts box are the items required to mount the
switch box to the cooler. Mount the switch box as follows:
1.
From inside of the cabinet (8), insert chase nipple (1) thru 7/8” hole
and fasten it tightly to the cabinet with the conduit jam nut (2).
2.
Screw the switch box (3) onto the chase nipple (1) until tight and
box is aligned vertically.
3.
Insert the power supply wires from circuit board thru chase
nipple into switch box.
Connect Power Supply
CAUTION:
The external power supply to the unit must be
adequately grounded and protected against overloads and short
circuits per all national and local codes.
Run power supply to disconnect switch box and connect to the poles
of the switch (4). Refer to the wiring diagram on the control box cover
to complete the electrical installation of your cooler. Secure the switch
into the box and install the gasket and switch cover (5).
Thermostat Cable Installation
The thermostat for this cooler is connected to the control panel by
means of a thermostat cable (6 conductor minimum, not provided).
Type CL2, 18 or 20 gauge, UL Listed thermostat wire is
recommended.
1) Route one end of the thermostat cable (6) through the ½” hole in
the corner post on the left side of the access door and then through
the ½” hole in the left end of the control box.
2) Insert the individual conductors of the thermostat cable (6) into the
terminal block connections (9) on the left side of the printed circuit
board. Connect colored wires to terminals as follows:
White to ‘C’
Brown to ‘H’
Red to ‘L’
Green to ‘P’
Yellow to ‘D’
Blue to ‘R’
Tighten screws carefully.
3) Install strain relief bushings (7) over the thermostat cable into the
½” holes in the corner post and control box, allowing a slight
amount of slack - do not stretch the thermostat cable tight. Replace
the control box cover and tighten the 4 screws.
4) Select a location for the thermostat:
l
Mount the thermostat about 5 to 6 feet above the floor.
l
Mount the thermostat on an interior wall, not on an outside wall.
l
Do not mount near sources of heat or in direct sunlight.
l
Do not mount in the direct draft from cooler air registers.
l
Avoid dead air spaces which have little air circulation.
5) Install the thermostat using the “Mounting Instructions for
Thermostat” furnished with the cooler.
7
7
4
4
6
6
5
5
3
3
2
2
1
1
9
9
8
8
1) Chase Nipple
2) Jam Nut
3) Junction Box
4) Disconnect Switch
5)Junction Box Cover
6) Thermostat Cable
7) Strain Relief Bushings
8) Cooler Cabinet
9) Terminal Block for Thermostat Cable
