Carrier 80AWX Series - Water Pump Management; Pump Unblocking Procedure; Output Configuration; Pump down

25
80AWX- 80AWH
English
Controller operation
Water pump management
Pump unblocking procedure
Output conguration
Pump Down
Silent mode
Zone control settings
Multi – purpose output (see paragraph Terminal block
description) can be congured to perform dierent
functions (code 108).
Fan coil
The output can be used to turn ON / OFF fan coil units. The
available options are shown in the variable table.
Dehumidier
The output is used to turn ON/OFF a dehumidier.
It is possible to reduce the maximum compressor frequency
in dened time periods.
See user interface documentation.
Frequency reduction is expressed as % of maximum
frequency and is set by code 3.
Code 105.0 denes which kind of room control is
implemented.
0. No control: room temperature is not controlled; comfort is
only depending on climatic curve settings.
1. User interface: an additional user interface (see paragraph
Accessories) is connected to the unit and is placed in the
room.
2. Sensor: used only in combination with 2 zone kit.
3. Thermostat: a thermostat is connected to the Heat / Cool
thermostat input.
4. Unit user interface shifted: unit user interface is removed
from the unit and placed in the room .
In case the user interface is shifted, ll the gap left on the
unit with the provided cap (see g. 4, item 3).
When Silent mode is activated, the outdoor unit will be less
noisy, but also less powerful, therefore backup and booster
heaters could be used more often.
Dehumidier is turned on in Cool mode, when humidity is
higher than value of code 110.
It works only if room control is done by user interface (code
105.0=1 or 4).
Alarms / Defrosting
The output is activated to signal some specic conditions.
See variable table for details.
This function is active in all operative modes, including OFF.
If the water pump is OFF for 24 hrs, it is activated for some
time to avoid locking.
Setting code 147=10, it is possible to force the outdoor unit
in Cool mode (also in case of Heating only systems) for 5
minutes, to allow the pump down of the refrigerant.
After 5 minutes operation, the code is self reset to 0.
After Pump Down, the unit will remain OFF until electrical
power is reset.
This function works only if room temperature is measured
by the system (code 105.0=1 or 4).
If code 1.6=0, water pump is always running during space
heating / cooling operations.
If code 1.6=1, water pump is turned OFF if room
temperature overshoots the setpoint point by code 4 (°C),
and turned ON if room temperature is below (in heating,
above in cooling) room setpoint by code 4 (°C).