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VisionPRO
TM 8000
Touchscreen
Programmable
Thermostat
Table
2. Terminal
Designation
Descriptions.
Terminal
Designation
Description
Rc (see Note
Power for cooling--connect
to
1 )
secondary
side of cooling
system
transformer
R (see Note 1 )
Power for heating--connect
to
secondary
side of heating
system
transformer
C (see Note 2)
Common
wire from secondary
side of
cooling
system
transformer
W
Heat relay
Y
Compressor
contactor
G
Fan relay
Y2
Second
stage
cooling
W2
Second
stage
heat relay
O/B (see Note
Changeover
valve for heat
pump
3)
systems
AUX
Auxiliary
heat relay for heat pump
systems
E
Emergency
heat relay for heat
pump
systems
L (see note 4)
Equipment
monitor
for heat pump
systems
Sl,
S2
Optional
outdoor
or indoor
remote
sensor
NOTES:
1.
2.
3.
When
used
in a single-transformer
system,
leave
metal jumper
wire in place between
Rc and R. If
used on a two-transformer
system,
remove
metal
jumper
wire between
Rc and R.
Common
wire is optional
when thermostat
is used
with batteries.
If thermostat
is configured
for a heat pump
system
in the Installer
Setup,
configure
changeover
valve
for cool (O-factory
setting)
or heat (B).
L terminal
is an input (system
monitor)
when the
System
mode
is in the Heat, Off, Cool or Auto
position.
L terminal
is a 24 Vac output
when
System
mode
is Emergency
Heat. Must connect
the 24 Vac Common
when using the L terminal.
See LED Indication
section
for more details.
_CONVENTI_NAL
W2
5_1__
L..J,--zsmJ--]
i
II
i,
II
II
II
I OUTDOOR/INDOOR
I
TEMPERATURE
SENSOR
RC
Y
©
G
@
OPTIONAL
24 VAC
COMMON
CONNECTION
pATREL4
A
Z_
POWER SUPPLY
PROVIDE
DISCONNECT
MEANS AND OVERLOAD
PROTECTION
AS REQUIRED
Z_
FACTORY
INSTALLED
JUMPER
A
OPTIONAL
OUTDOOR
OR INDOOR
REMOTE
SENSOR
AVAILABLE
ON SELECT
MODELS
WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT
CABLE
M19895
Fig. 9. Typical
hookup
of conventional
single-stage
heat
and cool
system
with
single
transformer
(IH/lC
conventional).
_
CONVENTIONAL
W2
3_1__
II
II
A"
o
I OUTDOO R/IN DOC_'_
1
TEMPERATURE
SENSOR
G
° o
o /,O AL
i
COMMON
CONNECTION
IHEATRELAYI
A
A
A
POWER SUPPLY
PROVIDE
DISCONNECT
MEANS AND OVERLOAD
PROTECTION
AS REQUIRED
Z_
REMOVE
FACTORY
INSTALLED
JUMPER
OPTIONAL
OUTDOOR
OR INDOOR
REMOTE
SENSOR
AVAILABLE
ON SELECT
MODELS
WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT
CABLE
M19896
Fig. 10. Typical
hookup
of conventional
single-stage
heat
and cool
system
with
two transformers
(1H/IC
conventional).
68-0280
6
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