Honeywell RTH6400 Owner's Manual - Page 23

Wiring

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RTH6400 Wiring If labels do not match letters on the thermostat, check the chart below and connect to terminal as shown here (see notes, below). SETUP WIRING ASSISTANCE TROUBLESHOOTING M28418 If wires will be connected to both R and Rc terminals, remove metal jumper (see page 6). Do not connect both O and B if you have a heat pump. Connect O wire to O/B W. Wrap B wire with electrical tape and do not use. Do not use C, X or B. Wrap bare end of wire with electrical tape. 21 69-2210EF-03

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RTH6400
21
69-2210EF—03
SETUP
WIRING
ASSISTANCE
TROUBLESHOOTING
Wiring
If wires will be connected to both
R
and
Rc
terminals, remove metal jumper (see page 6).
Do not connect both
O
and
B
if you have a heat
pump. Connect
O
wire to
O/B W
. Wrap
B
wire
with electrical tape and do not use.
Do not use
C
,
X
or
B
. Wrap bare end of wire
with electrical tape.
If labels do not match letters on the thermostat, check
the chart below and connect to terminal as shown here
(see notes, below).
M28418