How to self install Nest Smart Thermostat v3 (Y-Plan Potterton EP2002)

How to install a Nest V3 Thermostat with hot water control onto an existing Y-Plan System with a Potterton EP2002 programmer. TURN OFF FROM MAINS BEFORE DOING ANY WORK! Explaination of Y plan system Expplaination of Y Plan wiring diagram Removing old thermostat / programmer Best tips. Instructions are similar for all Y-Plan systems with a programmer.

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Installing a Google Nest Thermostat - In-Depth (UK) | OpenTherm & On/Off Control

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How to install Nest thermostat (UK) on a Y plan - system with hot water cylinder & 3 port valve

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PB Plumber Nest Thermostat on a Y Plan

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How to install Nest thermostat (UK) on an S plan - system with hot water cylinder

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Nest Learning Thermostats - S Plan Dual Zone - Replacing Potterton EP2002