additional zone valve

[Pete1994]

Hi there
got a question
My friend has had a new heating system fitted (system boiler + unvented cylinder)
large area down stairs with 10 rads, small area upstairs, 3 rads, it has two zone valves fitted to a lifestyle wiring centre, the zone valves are
Honeywell 272848/u 5 wire valves,
Is there a wiring diagram anywhere for adding a stat and extra valve to control upstairs

cheers

 

[45yearsagasman]

Honeywell S plan plus will control hot water and 2 heating zones.
Go to their web site for diagram.