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Figure 6.4
Boiler and MLC30 Electricity Connection Diagram in the 4 High Temperature Zone of the Cascade System with Viwa 90, 115, 125 and 150
Boilers
Figure 6.5
Boiler and MLC30 Electricity Connection Diagram for Cascade System and System with 1 High Temperature (Radiator) and 1 Low Temperatu-
re (Underfloor Heating) Zones with Viwa 90, 115, 125 and 150 Boilers
6.6. MLC-30.XX CASCADE ZONE MANAGEMENT CARD AND PLACES OF USAGE:
There are two different application of MLC-30 Cascade Board.
When used only for high temperature zones, four high temperature zone controls can be done.
A high temperature zone can control a low temperature zone (controlled with 3way valve).
P4
P3
P2
P1
GROUND
L
N
R.U.2
R.U.3
R.U.4
R.U.1
O.T. MASTER
BOILER UNIT
3-WAY VALVE
LOW TEMPERATURE
P1
P2
GROUND
L
N
R.U.2
R.U.1
LT PROBE Z1
O.T. MASTER
BOILER UNIT
HTS