Service manual
11
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INSTALLATION
C1 C Heating system
M Pressure gauge
C1 = Radiator circuit,
Baseboards, Radiant Panels
or Fancoils
VM1 1
st
circuit mixer valve
Dc1 1
st
circuit heating outlet
Rc1 1
st
circuit heating return
C1 C Heating system
M Pressure gauge
C1 = Radiator circuit,
Baseboards, Radiant Panels
or Fancoils
VM1 1
st
circuit mixer valve
Dc1 1
st
circuit heating outlet
Rc1 1
st
circuit heating return
C3 = Domestic hot water
preparation circuit
P3 Domestic hot water pump
C3 B Domestic hot water
production system
Ss Domestic hot water sensor
C Heating system
M Pressure gauge
Low Temp
C1 = Radiator circuit
C1 VM1 1
st
circuit mixer valve
Dc1 1
st
circuit heating output
Rc1 1
st
circuit heating return
C2 = Underfloor heating circuit
C2 P2 2
nd
circuit heating circulator
VM2 2
nd
circuit mixer valve
Dc2 2
nd
circuit heating output
Rc2 2
nd
circuit heating return
Sd Heating output sensor
Connection to a heating circuit with
a domestic hot water production
system
Connection to a double heating circuit
Fig. 37
Various typical water circuits are
illustrated below :
Connection to a single heating circuit
Fig. 35
Connection to a double
heating circuit with a
domestic hot water
production system
C Heating system
M Pressure gauge
C1 C1 = Radiator circuit
VM1 1
st
circuit mixer valve
Dc1 1
st
circuit heating output
Rc1 1
st
circuit heating return
C2 C2 = Underfloor heating circuit
P2 2
nd
circuit heating circulator
VM2 2
nd
circuit mixer valve
Dc2 2
nd
circuit heating output
Rc2 2
nd
circuit heating return
Sd Heating output sensor
C3 = Domestic hot water production circuit
C3 P3 Domestic hot water pump
B Domestic hot water production system
Ss Domestic hot water sensor
Fig. 36
Fig. 38
Note: If the radiator circuit is high temperature baseboard then the connections at the heating system should be reversed with
the baseboard loop using the DC2 circuit and circulator and the underfloor loop using the DC1 circuit which eliminates the need
for VM2 since DC1 has one built in. This applies to figs 37 and 38.