19
18
4. Remove the old thermostat from the wall. Leave at least 75
mm (3”) of wire for each connection to the thermostat wiring
terminal. Remove 3 mm (1/8”) of insulation from each wire and
twist the wires to give
a
sturdy end.
5. Remove the cover from the Wondrwall thermostat. Hold onto
the ribbon loop on the back of the thermostat and pull the
cover forwards.
6. Hold the thermostat base against the wall where you intend to
mount it and mark the three mounting holes (A).
7. Drill the mounting holes and insert the wall plugs (if necessary).
Pull the cables through the hole in the base (B) then use
a
Philips screwdriver to screw the thermostat base to the wall.
8. Connect the wires: Push down the orange spring clip (C) of the
correct connector and insert the wire fully into the correct hole
(D). Release the spring clip. Check the wire is secure.
9. Replace the thermostat cover. Push it so it clicks and covers the
base.
10. Turn on the power to your HVAC system or boiler.
A
A
A
A
B
Cool control /
compressor
Heat pump c/o (+
in heat)
Fan
Heat pump c/o (+
in cool)
Heat control
2nd stage heat /
aux heat
Power from cooling
2nd stage cool
control
Power from heating
Common
D
C