Owner's Manual

Compatibility
Based
on
Nest's online
compatibility
checker data,
the
Nest
Thermostat works
with
most
24V
systems, including gas,
electric, oil, forced air, variable speed, heat pump and radiant.
It
can control:
•
Heating: one,
two
and
three
stages
(W1,
W2,
W3)
•
Cooling: one and
two
stages
(Y1,
Y2)
•
Heat pump:
with
auxiliary and emergency heat (0/B,
AUX,
E)
•
Fan
(G)
•
Power
(C,
Rh,
Rc)
•
Humidifier or dehumidifier
(HUM, DEHUM)
The Nest Thermostat's
*connector
can
accept
only one
of
these wires:
W3
1
E
1
HUM
or
DEHUM_
The Nest Thermostat is designed
to
work even
if
your home
doesn't have a common
C
wire. Rarely, installing a new
C
wire
may be required.
Professional installation recommended for:
•
Dual
fuel
systems (heat pump
with
furnace)
• Whole-home humidifiers and dehumidifiers
Go
to
nest. com/
works
to
make sure the Nest Thermostat
will
work
in
your home and find
out
if
you need professional installation.
Watch
the
video
Before you start, watch our installation video
at
nest.c
omisup
po
rt