Systema EOLO BC RT - Page 34

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SYSTEMA EOLO RT rev. 09ENIT04052021
ELECTRICAL CONNECTION
Tab 4.1 SCP674V130A1 card connections legend (2 di 3)
CONNECTOR TERMINAL DESCRIPTION
CONNECTED
COMPONENT
J2A
F1 Connection (phase) of safety relays and fan control contactors
K3; K1-M1; K1-M2
(if present)
F1 Soft-start (phase) connection
PSR...
(version with soft-start)
F1 Connection (phase) relay for plug fan K
N
Connection (neutral) of safety relays and fan control
contactors
K3; K1-M1; K1-M2
(if present)
N Soft-start (neutral) connection
PSR...
(version with soft-start)
N Connection (neutral) relay for plug fan K
J2B
F2 Not connected Not connected
N Not connected Not connected
J3A
+
NTC probe supply air ow temperature
P3
- P3
J3B
+
Burner modulating control
Connector XS2-10
C Connector XS2-9
- Connector XS2-8
J5B
La Actuator Belimo L (optional) SM (if present)
N Actuator Belimo N (optional) SM (if present)
J7B
a
Minimum gas pressure swich (optional 25-120kW, standard 150÷300kW).
Pg (if present)
a Pg (if present)
b
Bridge contact
b
J7C
c
Contact NC of K3
K3(NC)
c K3(NC)
c
Contact NO of HKF - in the case of soft-start
HKF1; HKF2
(version with soft-start)
c
c
Connection of plug-fan
Plug fan (KL2-2)
c Plug fan(KL2-3)
d
Safty thermostat - automatic reset
Ts
d Ts
d
Connection of safety thermostat with manual reset (optional, as an alternative to
Ts), minimum air ow pressure switch with manual reset (optional), maximum gas
pressure switch (optional, standard for models 150 ÷ 300)
Tso, Pa, Pg
2
(if present)
d Tso, Pa, Pg
2
(if present)