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8.1.1. Example diagram for heating-only with open vessel
Key:
PI
System pump
V
Check valve
PR
Recirculating pump
S4
Boiler outlet probe
IR
Central heating system
S5
Boiler return probe
8.1.2. Example diagram for heating-only with open vessel with mixing valve
Key:
PI
System pump
V
Check valve
PR
Recirculating pump
S4
Boiler outlet probe
IR
Central heating system
S5
Boiler return probe
VM
Mixing valve
Содержание GRA115RO
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