homexpert THR842DUK User Manual page 8

Installation and Setup
Connect system wiring
2
Terminal screws 1.5 - 2.5 mm
6 mm max.
Connect wiring from your heating or cooling
equipment to the relay box as shown at left. See
wiring diagrams on page 15 for details.
1 Make sure electrical power is off.
2 Strip insulation to expose about 6 mm of
bare wire.
3 Use a screwdriver to loosen terminal screw,
insert wire into slot, then tighten screw.
4 Replace relay box cover, then restore
electrical power.
NOTE: All wiring must comply with IEE
regulations. Keep AC mains supply/load cables
separate from equipment wiring.
14
Wiring diagrams
Burner (direct control)
N L L A B C
Zone valve
Wiring terminals
homexpert by Honeywell THR842DUK Wireless Digital Thermostat
tm
Combi boiler
Cooling device
15