lp-666 Rev. 003 Rel. 001 Date 2.25.20
35
J6
EXT
LWCO
CASCADE BUS
J7
J8
P9
X5
P10
11
20
1
10
BIC 928
ELX 400-2.0 LOW VOLTAGE
CUSTOMER CONNECTION BOARD
CASCADE FOLLOWER
J6
BUS B
BUS G
BUS A
0-10 VOLT -
OUT A +
EXT
LWCO
0-10V
INPUT
CASCADE BUS
J7
J8
P9
X5
P10
11
20
1
10
BIC 928
0-10 VOLT -
OUT B +
S
T
O
D
ELX 400-2.0 LOW VOLTAGE
CUSTOMER CONNECTION BOARD
SINGLE BOILER AND CASCADE MASTER
LP-666-X2
09/18/19
SYSTEM SENSOR
THERMOSTAT
OUTDOOR SENSOR
DHW SENSOR
-
+
+
-
CASCADE BUS
TERMINATION PLUG
INSTALLED HERE IN
FINAL CASCADED BOILER
CASCADE BUS
TERMINATION PLUG
INSTALLED HERE
Figure 28 - Cascade Master and Single Boiler Low Voltage Wiring, and Cascade Follower Low Voltage Wiring
Figure 27 - Cascade Termination Plug Detail