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28
Fig. 22 — 208/230-v ECM Motor with DDC Ready Controls
RED/501
9
0
1/
K
L
B
9
0
1/
K
L
B
BLK
/10
8
SW
1
BL
K
/1
0
1
BL
K/1
08
BL
K
/1
0
2
FU1
208
/230V
L1
L2
GND
BLK
/10
0
DISC1
GRN
B
LK/
106
B
LK/
107
FU2
BLK
/10
5
USE COPPER SUPPLY WIRES.
24
V
AC
TRAN1
24
0 V
20
8
V
GRN
CO
M
SEE NO
TE
4
WHT
LO
W
ME
D
HIGH
MA
X
24
Va
c
SP
EED BO
ARD
BL
U/
EC
9
GRN
WH
T
BLK
ORN
/EC2
3 W
IR
E
POW
ER
CABLE
BRN
SW
2
RED/EC12
RE
D/EC
12
YE
L
/E
C
5
SE
E
N
O
T
E
3
FR1
2
4
RED/
501
3
1
FR1
2
1
5/
K
L
B
4
0
5/
N
R
B
BRN/51
3
RED/514
CBC1
4
3
2
SEE CONTROL DIAG
RAM
FOR HARNESS WIRING
BRN/50
5
BRN/
EC1
RED/514
RED/502
RED/503
MAX
LO
W
HI
GH
EC
F
A
N
MOTOR
1
3
12
2
9
14
5
4
3
2
1
16
PIN
RECEP
T
A
CLE
ON MOTOR
5 PIN
RECEP
T
A
CLE
ON MOTOR
11
5
BL
K
BRN
/5
0
4
LEGEND
CBC
—
Control Box Conne
ction
DDC
—
Direct Digital Contr
o
ls
DISC
—
Disconnect Switch
EC
—
Electron
ically Commutated
ECM
—
Electron
ically Commutated
Motor
ESP
—
Ex
ternal Stati
c
Pressure
FR
—
Fan R
e
lay
FU
—
Fus
e
GN
D
—
Ground
SW
—
Swi
tc
h
TRA
N
—
Transfo
rmer
Harn
ess Conne
ction
Connection Poin
t Splice
Splice Terminal Conn
ection
Componen
t Tie Point
Op
tional Wirin
g
F
a
ctor
y Wir
ing
Chassis Ground
Earth Grou
nd
NOT
E
S:
1.
Make electrical installation
in a
c
corda
nce w
ith
job d
iagram, and in
compliance with national and
local electrical codes.
2.
Low
limit
thermostat (L
LT)
is inst
alle
d on all units with water coils.
3.
Wire
Y
E
L/EC
5 factory connected
to LOW. Positions
ME
D
, HIGH,
and
MAX are for field us
e
wi
th
in
creased ESP.
4.
T
ransformers shown
w
ired for 240-v; ho
weve
r, transformers are nor-
mally factory wired
to match voltage listed o
n the unit nameplate.