Value of the CP640
parameter
Value of the AP098
parameter
The BL1 blocking
input is
Operating mode for
the heat pump
If the OT contact is
open
If the OT contact is
closed
1 (Default value)
1 (Default value)
Closed
Heating
No heating demand Heating demand
1
0
Open
Heating
No heating demand Heating demand
1
0
Closed
Cooling
No cooling demand Cooling demand
0
1
Open
Cooling
Cooling demand
No cooling demand
0
1
Closed
Heating
Heating demand
No heating demand
0
0
Open
Heating
Heating demand
No heating demand
0
0
Closed
Cooling
Cooling demand
No cooling demand
1. Connect the "heating/cooling contact" thermostat input to the BL1 in
put on the EHC–04 PCB for the heat pump.
2. Connect the "On/Off" thermostat input to the OT input on the EHC–
04 PCB for the heat pump.
3. In the Installer/ EHC-04 menu, configure the BL1 input to "Heating/
Cooling", by setting the AP001 parameter to 11.
4. In the Installer/ EHC-04 menu, set the contact direction of the BL1
input with the AP098 parameter.
5. In the Installer/ CIRCA menu, set the contact direction of the OT in
put with the CP640 parameter.
7.7
Filling the installation
7.7.1
Filling the heating circuit
Before filling the heating system, flush it thoroughly.
Important
Do not use glycol.
The use of glycol in the heating circuit invalidates the warranty.
1. Fill the installation until a pressure of 1.5 to 2 bars is reached. Read
the pressure on the mechanical pressure gauge.
Important
The mechanical pressure gauge, situated under the top panel,
close to the expansion vessel, is only used when filling the indoor
unit with water. After the heat pump is switched on, the pressure
will be shown on the display.
2. Check for any water leaks.
3. Completely vent the indoor module and the installation for optimum
running.
Flushing new installations and installations less than 6 months
old
1. Clean the installation with a powerful universal cleaner to eliminate
debris from the system (copper, hemp, flux).
2. Thoroughly flush the installation until the water runs clear and shows
no impurities.
Flushing an existing installation
1. Remove any sludge from the installation.
2. Flush the installation.
3. Clean the installation with a universal cleaner to eliminate debris
from the system (copper, hemp, flux).
4. Thoroughly flush the installation until the water runs clear and shows
no impurities.
7 Installation
64
AWHP-2 iMPI
7685645 - v04 - 07032018