5
Description
Alarm relay output
circuit A
Alarm relay output
circuit B
Contact 1:
Indoor unit fan
Contact 2:
Cooling 1
Contact 3:
Cooling 2
User safety loop input
Connection to solenoid
valve A1
Connection to solenoid
valve A2
24 V a.c. power supply for
thermostat
Connector/channel
J3 / CH24
J3 / CH25
JJ4 / CH8
J4 / CH9
J4 / CH10
J4 / CH11a
Terminal
30A - 31A
30B - 31B
32 - 33
63 - 64
73 - 74
34 - 35
52 - 12
53-12
"R.C."
Board
Master NRCP-
BASE
Slave NRCP-
BASE
Master NRCP-
BASE
Master NRCP-
BASE
Master NRCP-
BASE
Master NRCP-
BASE
Customer board
Customer board
Customer board
Remarks
Indicates alarms, circuit A
Indicates alarms, circuit B
This contact may be used for indoor fan
everse operation. If this contact is not used, it
must be bridged.
This contact is used to control the first cooling
stage: connected to the thermostat.
This contact is used to control the second
cooling stage: connected to the thermostat.
This contact can be used for any customer
safety loop that requires that the unit is
stopped, if it is open. If the contact is not
used, it must be bridged.
Contact used to control the solenoid valve of
compressor A1
Contact used to control the solenoid valve of
compressor A1
Remarks
Volt-free contact 24 V a.c.
48 V d.c. max., 20 V a.c. or
V d.c. min., 3 A max., 80 mA
min., external power supply.
Connector: 4 pin WAGO
231-304/026000 pitch 5.08;
One per board needed.
24 V a.c., 20 mA
24 V a.c., 20 mA
Connector: 8 pin Wago 734-
168, pitch 3.5
Maximum 18 VA, 10 W, 24 V
a.c.
Maximum 18 VA, 10 W, 24 V
a.c.
Maximum 10 VA
DUAL-CIRCUIT UNITS
3.5 - Connections at the user's terminal block
3.5.1 - General description
The contacts below are available at the user's terminal block on
the NRCP-BASE board or on a customer terminal block (see
figure 1). The following table summarises the connections at
the user’s terminal block.
Description
Alarm relay output
Contact 1:
Indoor unit fan
Contact 2:
Cooling 1
Contact 3:
Cooling 2
User safety loop input
Connection to solenoid
valve A1
Connection to solenoid
valve A2
24 V a.c. power supply for
thermostat
Connector/channel
J3 / CH24
J4 / CH8
J4 / CH9
J4 / CH10
J4 / CH11a
Terminal
30 - 31
32 - 33
63 - 64
73 - 74
34 - 35
52 - 12
53-12
"R.C."
Board
NRCP-BASE
NRCP-BASE
NRCP-BASE
NRCP-BASE
NRCP-BASE
Customer board
Customer board
Customer board
Remarks
Indicates alarms in circuit A
This contact may be used for indoor fan
reverse operation. If this contact is not used, it
must be bridged.
This contact is used to control the first cooling
stage: connected to the thermostat.
This contact is used to control the second
cooling stage: connected to the thermostat.
This contact can be used for any customer
safety loop that requires that the unit is
stopped, if it is open. If the contact is not used,
it must be bridged.
Contact used to control the solenoid valve of
compressor A1
Contact used to control the solenoid valve of
compressor A1
Remarks
Volt-free contact 24 V a.c. 48
V d.c. max., 20 V a.c. or V
d.c. min., 3 A max., 80 mA
min., external power supply.
Connector: 4 pin WAGO
231-304/026000 pitch 5.08
24 V a.c., 20 mA
Connector: 8 pin Wago 734-
168, pitch 3.5
Maximum 18 VA, 10 W, 24 V
a.c.
Maximum 18 VA, 10 W, 24 V
a.c.
Maximum 10 VA
SINGLE-CIRCUIT UNITS
(28 páginas)
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