39
CONTROL SYSTEM
ID
Use
Description
Features
Available
for the user
inputs
BX1
B91
Source heat exchanger inlet temperature
temperature sensor NTC 10K
BX2
B92
Source heat exchanger outlet temperature
temperature sensor NTC 10K
BX3
B71
Plant heat exchanger inlet temperature
temperature sensor NTC 10K
BX4
B21
Plant heat exchanger outlet temperature
temperature sensor NTC 10K
H1
VK1
Heating request
voltage free digital input
0-10 Vdc input
x
H3
VK2
Cooling request
voltage free digital input
0-10 Vdc input
x
EX1
E20
Allarme generico (sequenzimetro - soft starter)
230 Vac digital input
EX2
E10
High pressure switch
230 Vac digital input
EX3
E15
Source flow switch
230 Vac digital input
EX4
E24
Plant flow switch / Plant pump thermal protection
230 Vac digital input
outputs
QX1
K25
Integrative electrical heatres - step 1
2 A - 230 Vac
x
QX2
K1
Compressor
2 A - 230 Vac
QX3-FX3
K32
Heating integration
2 A - 230 Vac (voltage free)
x
QX4
Y22
Reversing cycle valve
2 A - 230 Vac
x (1)
QX5
Q9
Plant pump
2 A - 230 Vac
ZX6
Q8
Source pump / Source 2 way valve
2 A - 230 Vac
UX1
Q9
Modulating plant pump
0-10 Vdc
UX2
Q8
Modulating source pump
Modulating source 2 way valve
0-10 Vdc
(1) Available for the user only for not reversible heat pumps (IH)
Internal expansion module
inputs
BX31
B9
Outdoor air temperature
temperature sensor NTC 1K
BX32
-
-
temperature sensor NTC 10K
x
BX33
-
-
temperature sensor NTC 10K
x
BX34
-
-
temperature sensor NTC 10K
x
H31
-
-
voltage free digital input
0-10 Vdc input
x
H32
-
-
voltage free digital input
0-10 Vdc input
x
H33
H82
Compressor suction pressure
0-10 Vdc input
outputs
QX35
K26
Integrative electrical heatres - step 2
2 A - 230 Vac
x
WX31
-
-
unipolar electronic expansion valve
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.
