21
PN 20009722 REV F, [08/01/2020]
SEQUENCE OF OPERATION — CAW INFRARED CONTROL SYSTEM
WARNING
Electrical shock hazard. Turn off power to
unit before proceeding. Failure to follow these
instructions could result in death or serious injury.
!
CAW- Infrared control system units only.
Set controller functions before proceeding with start-up.
See instructions Page 27.
Test Cooling Operation
Unit operation is dependent on room temperature. It
may be necessary to warm the room before testing unit’s
cooling abilities.
When power is first applied to control or after power outage
there is three (3) minute delay before cooling or optional
electric heat will energize. This is to protect unit from short
cycling.
Perform Complete Inspection
System Electrical Verification
1.
Turn off all power to unit.
2.
Remove any tools or other obstructions.
3.
Inspect all electrical connections.
4.
Separate any lines that contact each other.
5.
Replace control panel cover, filters and grilles.
6.
Test each power and circuit connection before powering
system.
Set DIP Switches
1.
DO NOT turn power on until DIP switches have been
set and control panel cover replaced.
2.
Access DIP switches. Remove control panel cover. See
Figure 35, Page 23 for location of switches on control
board.
3.
Infrared control system units have four DIP switches.
See Table 3, Page 24.
A. DIP switch #1, Test mode, is used only during
start-up and servicing, to reduce time required for
automatic timers.
NOTICE
Do not place unit in service unless dip switch #1 is
set to NO.
B. DIP switches #2, #3 and #4 are related to
(optional) use of wall mounted remote thermostat.
Switches #2 and #3 are operational only if switch
#4 is set to YES, enabling wall mounted remote
thermostat operation.
4.
Set switches as desired for application.
Set Controller Configuration
1.
See Figure 37, Page 26 and Pages 24-34 for operation
of controller and infrared control system handheld
remote.
2.
See Figure 37, Page 26 for information on setting
control using IR handheld remote. IR hand held remote
is a line-of-sight device, and must be pointed at
receiver on unit-mounted display.
3.
Turn power on to indoor unit so control is operational.
4.
Press and hold both MODE and PROGRAM buttons on IR
hand held remote for 5 seconds to enter Configuration
mode. See Figure 37 Page 26.
5.
Configure controller see Figure 38, Page 27.
6.
Complete configuration. Point IR hand held remote
toward cassette unit’s display. Press and hold power
button for 2 seconds. Information is transmitted from
IR hand held remote to cassette. Cassette responds
with beep, indicating it has received information. It
is possible that information entered into IR hand held
remote may not have been received if IR hand held
remote was not pointed directly at receiver.
7.
Set time and 7-day program after start-up is complete,
not at this time.
Perform Electrical Circuit Checks
1.
Turn power on to cassette unit.
2.
Verify fan and louver operation using IR handheld
remote. See Figure 37, Page 26.
A.
Verify fan can be set to high, medium, low and auto.
B.
Verify louver can be set to run at full open or
oscillation 18 & 36.
Verify Cooling-
Only Operation Using IR Hand Held
Remote
1.
Cooling-only with no heat source in cassette.
2.
Set configuration for Heat Source OFF, Heat Pump OFF.
See Figure 37, Page 26.
3.
Use IR hand held remote to set MODE to Cool. See
Figure 36, Page 25.
4.
Use IR hand held remote to adjust setpoint
temperature below room temperature.
5.
Verify supply air is cooler than room air.
