22
PN 20009722 REV F, [08/01/2020]
SEQUENCE OF OPERATION — CAW INFRARED CONTROL SYSTEM
Verify Cooling - With Optional Electric Heat
1.
This is cooling unit with optional electric or hot water
heat option in the cassette unit.
2.
Set configuration for Heat Source ON, Heat Pump OFF
using IR hand held remote controls. See Figure 38,
Page 27.
3.
Use IR hand held remote to set MODE to Cool. See
Figure 37, Page 26.
4.
Use IR hand held remote to adjust setpoint
temperature below room temperature at cassette unit.
5.
Verify supply air is cooler than room air.
6.
Use IR hand held remote to set MODE to Heat.
7.
Use IR hand held remote to adjust setpoint
temperature above room temperature. Observe three
(3) minute minimum time off.
8.
Verify heating is operational. Verify supply air is
warmer than room air.
9.
Use IR hand held remote to enable auto changeover
between heat/cool.
Verify Condensate Pump Operation
1.
Remove adjacent ceiling tile to access condensate
pump cover panel.
2.
Insert squeeze water bottle nozzle through opening in
condensate pump access panel and fill drain pan. See
Figure 34.
3.
Adding water activates float switch and pump.
Water must flow regularly when condensate pump is
energized. If water does not, check pipe slope or see if
there are any pipe restrictions.
4.
Verify all covers, panels and filters are in place and
discharge louvers are correctly positioned.
NOTICE
Unit is equipped with safety switch. Pump is
activated when condensate reaches critical level.
Safety switch disables cooling if water level becomes
too high.
