ECR EMI America Series Installation, Operation And Maintenance Manual page 41

CACH/CAHH Microprocessor Controller Operation
Optional Heat pump without Electric
heat (Heat Pump unit outdoors)
NOTICE
EMI heat pumps are intended to operate
with an indoor air handler, with electric
heat. If an indoor air handler without
electric heat is matched with a heat pump
condenser, the system will deliver cold
air during defrost.
For heat pump operation without electric heat
the control must first be configured properly
(Heat source – ON, Heat pump – ON). See
Figure 36, Page 35.
For heat pump operation, turn the unit on via
the POWER/SEND button.
1. Select Heating mode via the MODE
button.
2. The room temperature and setpoint tem-
perature will be displayed.
3. Press either the UP or DOWN ARROW
buttons to change the setpoint tempera-
ture.
4. The setpoint temperature will change by
one degree with each successive press
of the UP or DOWN ARROW buttons.
Holding the button down will change the
temperature rapidly.
5. Place the setpoint temperature above
room temperature.
6. The outdoor unit will energize in heat
pump mode and heating will continue as
long as the setpoint remains above room
temperature.
7. The Heating LED will illuminate as long
as the unit is calling for heat.
8. When the room temperature has been
satisfied for at least sixty seconds and
the two-minute minimum on-time has
expired, the compressor will switch off.
9. The fan will operate as described in "Fan
Operation. "
P/N 240007756, Rev. A [051509]
CACG/CAHG & CACH/CAHH
• Installation, Operation and Maintenance Manual •
Optional Heat pump with Electric heat
(2-stage heating)
For heat pump operation with electric heat
the control must first be configured properly
(Heat source – ON, Heat pump – ON). See
Figure 36, Page 35.
For heat pump operation with optional elec-
tric heat, turn the unit on via the POWER/
SEND button.
1. Then select Heating mode via the MODE
button.
2. The room temperature and setpoint tem-
perature will be displayed. Press either
the UP or DOWN ARROW buttons to
change the setpoint temperature.
3. The setpoint temperature will change by
one degree with each successive press
of the UP or DOWN ARROW buttons.
Holding the button down will change the
temperature rapidly.
4. Place the setpoint temperature above the
room temperature by one degree. The
compressor will start and heating will
continue for a minimum of two-minutes
and as long as the setpoint remains above
room temperature.
5. The Heating LED will illuminate as long
as the unit is calling for Heating mode.
6. When the room temperature has been
satisfied for at least sixty seconds and
the two-minute minimum on-time has
elapsed, the compressor will switch off.
7. The fan will operate as described in "Fan
Operation. "
8. Next, place the setpoint temperature
above the room temperature by at least
two degrees.
9. The compressor will start and, the electric
will also energize after a thirty-second
delay, thus two-stage heating.
10. The electric heat will run for a minimum
of two minutes and until the deviation
between room temperature and setpoint
temperature is less than two degrees.
41
Air Handlers
(continued)
Made in the USA