Honeywell RTH5100B Guide D'installation page 17

Mount thermostat and restore electrical power
1. Align the 4 tabs on the wallplate with corresponding slots on the
back of the thermostat, then push
gently until the thermostat
snaps into place.
2. Restore electrical power
at the heating/cooling
system, or at the
fuse/circuit-breaker panel.
TIP: If wires interfere when you
try to mount the thermostat,
push excess wire back into the
wall opening.
15
RTH5100B
Wallplate
Thermostat