ECR EMI America Series Installation, Operation And Maintenance Manual page 30

Verify heat pump operation (no
electric heat)
1. This arrangement uses a heat pump
outdoor unit with no heat source in the
cassette (indoor) unit.
2. The configuration (
should be set for Heat Source OFF, Heat
Pump ON.
3. Use the remote to set MODE to Cool (see
Figure 35, Page 34).
4. Use the remote to adjust setpoint tem-
perature below the room temperature (at
the cassette unit).
5. The compressor should come on. Verify
that supply air is cooler than room air.
6. Use the remote to adjust setpoint tem-
perature above the room temperature (at
the cassette unit).
7. Verify that supply air is warmer than
room air.
Verify heat pump operation (with
electric heat option)
1. This arrangement uses a heat pump out-
door unit with the optional electric heat
source in the cassette (indoor) unit.
2. The configuration (
should be set for Heat Source ON, Heat
Pump ON.
3. Use the remote to set MODE to Cool (see
Figure 35, Page 34).
4. Use the remote to adjust setpoint tem-
perature below the room temperature (at
the cassette unit).
5. The compressor should come on. Verify
that supply air is cooler than room air.
6. Use the remote to adjust setpoint temper-
ature 1°F above the room temperature (at
the cassette unit), or just enough needed
to activate first stage heating.
7. The compressor should come on.
8. Verify that supply air is warmer than
room air.
9. Increase the setpoint until the second
stage heating (electric heaters) activates.
Comfort where it counts
CACG/CAHG & CACH/CAHH
• Installation, Operation and Maintenance Manual •
Figure 36, Page 35)
Figure 36, Page 35)
10. Verify operation.
Check condensate pump
operation
1. Remove an adjacent ceiling tile to access
the condensate pump cover panel.
2. Insert a squeeze water bottle nozzle
through the opening in the condensate
pump access panel and fill drain pan. See
Figure 32, Page 30.
3. Adding water will activate the float switch
and the pump. Water must flow regularly
with condensate pump energized. If water
does not, check the pipe slope or see if
there are any pipe restrictions.
4. Ensure that all covers, panels and filters
are in place and discharge louvers are
correctly positioned.
Figure 32 Checking condensate pump
operation
The unit is equipped with a safety switch
that will activate the pump when the
condensate reaches a critical level. The
safety switch will also de-energize the
compressor if the water level becomes
too high.
Additional cassette units
1. Repeat the start-up procedure for all cas-
sette units in the system.
30
Air Handlers
NOTICE
P/N 240007756, Rev. A [051509]