38
CONTROL SYSTEM
Inputs and outputs
The following table shows the list of the inputs and outputs available on the controller of the heat pump along with the expected use.
Some inputs and outputs can be configured in a different way by the user in order to manage other plant components which are not
contained inside the heat pump.
(1) Available for the user only for single phase power supply heat pumps.
(2) Available for the user only if the “Integrative electrical heaters” option has not been chosen.
ID
Use
Description
Features
Available
for the user
Inputs
B9
B9
outdoor air temperature
temperature sensor NTC 1K
B91
B91
source heat exchanger inlet temperature
(finned coil inlet)
temperature sensor NTC 10K
B84
B84
liquid line temperature
temperature sensor NTC 10K
BX1
B21
plant heat exchanger outlet temperature
temperature sensor NTC 10K
BX4
B71
plant heat exchanger inlet temperature
temperature sensor NTC 10K
BX5
-
-
temperature sensor NTC 10K
x
H1
-
Heating request
voltage free digital input
0-10 Vdc input
x
H3
-
Cooling request
voltage free digital input
0-10 Vdc input
x
EX1
E5
Electrical power supply lock
230 Vac digital input
x
EX2
E6
Low tariff
230 Vac digital input
x
EX3
E14
Fans protection
230 Vac digital input
EX4
E9
Low pressure switch
230 Vac digital input
EX5
E10
High pressure switch
230 Vac digital input
EX6
E24
Plant flow switch
230 Vac digital input
EX7
E20
Phase sequence controller
230 Vac digital input
x (1)
Outputs
QX1
K1
Compressor
2 A - 230 Vac
QX2
K19
Fans
2 A - 230 Vac
QX3
Q9
Plant pump
2 A - 230 Vac
QX4
Y22
Reversing cycle valve
2 A - 230 Vac
QX5
K25
Integrative electrical heaters - step 1
2 A - 230 Vac
x (2)
QX6
K26
Integrative electrical heaters - step 2
2 A - 230 Vac
x (2)
QX7
-
-
2 A - 230 Vac
x
QX8
K32
Heating integration
2 A - 230 Vac ( voltage free )
UX
-
-
0-10 Vdc
x