
98
EN
Underfloor heating hydraulic diagram
M
SE
TA
R
TZ2
VZ 2
TZ1
VZ 1
PMIX 1
VMX1
Mix 1 Zone kit
code 8092275
Ts1
SP
Pcp
NC
SA
Smz1
GS
Italy only
Vsic
KEY:
SE
External sensor
TA
Air thermostat for boiler
activation
M
Boiler delivery
R
Boiler return
SP
Plate heat exchanger
MCP
Primary circuit pump
NC
Condensate neutraliser
SA
Auxiliary sensor (system
delivery sensor, SMi)
RL1
Zone relays
P1
Direct zone pump
TZ1÷TZ2 Air thermostat for the zone
VZ1÷VZ2 Zone valves
GS
INAIL safety unit (Italy only)
Mix 1 Zone pump
(only for installations with a SINGLE boiler)
VMIX 1
MIX 1 system mixer valve
PMIX 1
MIX 1 system pump
Ts1
MIX 1 system safety
thermostat
Smz1
Zone 1 delivery probe
m
CAUTION
The system designer is responsible for choosing and sizing up the system components and MUST follow the best practice
technical guidelines, as well as complying with the local and national legislation in force in the destination country.
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