WIRING CONNECTIONS
CLIMATIC™50 –
Chiller / Heat Pump
–
Customer version
Page 5
CL50-CHILLER-IOM_CUST-0808-E
Display DC50 is connected to the Climatic
™
50 with the DT50 screw connector. Connection must be carried out by the
following cable:
Cable length up to 300m: AWG22 (0.34 mm ²), 2 pairs crossed with screen.
Cable length up to 500m: LiYCY-P (0.34 mm ²), 2 pairs with general shield.
The cable length should not exceed 500m.
For a better electromagnetic protection, Lennox recommends the use of LiYCY-P cable.
CONNECTION ON DT50 DERIVATOR
Terminal connection board installation guide DT 50
The board is fitted with three "telephone" RJ12 plugs. Ensure the board is correctly connected. Standard connection is:
Connectors:
BM50 on connector 'C’,
DC50 on connector
‘
A
’
or
‘
C
’
,
DS50 on connector
‘
B
’
.
Jumpers:
"Displays" are supplied directly by the Climatic board with 30Vdc. Take particular care at the path this 30V is taking when
several boards are being used.
J14 and J15 can switch on or off the direct current from the power supply:
J14 and J15 set between1-2:
Connectors
‘
A
’
,
‘
B
’
,
‘
C
’
and screw connector
‘
SC
’
are in parallel. Power is supplied to all connectors.
J14 and J15 set between2-3:
Connectors
‘
B
’
and
‘
C
’
are powered in parallel but connector
‘
A
’
and screw connector SC are not.
Displays connected to these ports will not be powered.
If J14 and J15 are set in different positions the "terminal connection board" DT50 DOES NOT WORK and so the
connected displays do not operate.
-
+
GND
VL
DC50
DT50
1
1
2
2
4
4
3
3
Ferrite
