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Which Heating Plan and set up do I Have as Looking to Install Nest

Postby iandb0812 » Thu Jan 12, 2017 3:49 pm

Am looking to install a nest thermostat set up but am stuck on identifying the correct wiring diagram for my current set up which consists of he following:

Gloworm Flexicom boiler
Switchmaster 400 controller (old dial type thing)
a single room thermostat
2 port valve

All the info I see whether an S plan or a Y plan system details an immersion tank plus pump, neither of which I have. Assume the combi boiler does the pumping as well as the heatng.

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