nest Thermostat - Technical Diagrams and Specifications; Cable Diagrams

Neutral
Power supply
forHeat Link
Power supply
forthermostat
SPDT relay
Live Satisfied
(optional)
Common Call-for-
heat
12V power to Nest Thermostat
(onlyrequiredifyou have
existing thermostat cables)
Cable diagrams
• Switched live systems
• Low voltage (dry contact) systems
• Zone valve systems
• MOMO zone valve systems
The following diagrams show you how to install the
Nest Thermostat on:
TIP: If the call-for-heat circuit is at mains
voltage, you can jumper the L (live) and
2(common) connectors with a 0.75mm
2
,
55mm long jumper cable.
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