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Specifications subject to change without notice
Nordic Technology Ltd
www.fast-stat.com
Install transformer.
Connect primary
to line side of
contactor.
OB
C
R
W
Purple
Yellow
Green
Thermostat
Sender
Purple
Yellow
Black
Green
G
Y1
C
R
G
W
Transformer
Fan
Control
Heat
Control
Compressor
Stage 1
L1
N
Furnace /
Fan Coil
C
Heat Pump
R
Transformer
L1
L2
Red
OB
Reversing
Valve
Y
Existing
condenser
cable
Y
W
Defrost
OB
Relay
Y1
R
W
Thermostat
Y
e
llo
w
B
la
ck
Y1
G
C
Stage
1
Y2
Y2
C
R
e
d
R
Stage
2
Control
Board
S
e
n
d
e
r
Purple
Existing
Condenser
Cable
Yellow
Green
G
re
e
n
Purple
Outdoor Unit
C
R
G
W
Transformer
Fan
Heat
L1
L2 (N)
Indoor Unit
Y1 Y2
1
0
0
0
F
A
S
T
-S
T
A
T
Connect Commons to
electrical ground.
Purple
Yellow
Green
P
u
rp
le
Thermostat
Cable
Y
e
llo
w
B
la
c
k
G
re
e
n
C
R
G
W
Transformer
Fan
Heat
L1
L2 (N)
Indoor Unit
R
e
d
Sender
Receiver
W
Thermostat
G
R
Model 1000 used to extend wiring between
a thermostat and indoor unit.
Example: Upgrading to 2-stage A/C with a
2-wire cable.
Note: The commons "C" must connected to
ground and the indoor and outdoor units.
Model 1000 used to extend wiring
between the indoor and outdoor units.
Coil
Example: Adding manual fan control with a
2-wire cable.
Note: Any two functions can be combined
together. Only transformer power R or C
cannot be connected to the sender.
Model 1000 used to extend wiring
between the indoor and outdoor units.
Example: Upgrading to a single-stage
heat pump with a 2-wire cable.
Note: The relay at the indoor unit is
used to isolate the two transfomers.
The commons must be connected to
ground at the indoor & outdoor units.
1000
FAST-STAT
1
0
0
0
F
A
S
T
-S
T
A
T
FAST-STAT Model 1000
Wiring Diagrams
See www.fast-stat.com
for additional diagrams.