User manual

If you’re fitting a Mixing Valve
Controller (HM80), Underfloor
Heating Controller (HCE80/HCC80),
OpenTherm Bridge (R8810)
Refer to the installation instructions
supplied with each device
Mixing Valve Controller (HM80), Underfloor Heating
Controller (HCE80/HCC80), Opentherm Bridge (R8810)
P8 Step 1: Wire up the heating system