Panel
K6
K7
C
W
Y
R
ZONE
2
T'STAT
C
W
Y
R
R1
0
B
G
ZONE
1
T'STAT
CAUTION
0
R
C
+
-
PLEASE read all
instructions carefully
before starting the
installation procedures.
ADDITIONAL
ZONE
PANEL
CONTROL SYSTEM
G
R
E
E
N
B
R
O
W
N
RED
ORANGE
RED
HEAT
OFF
COOL
FAN
ON
AUTO
Front of Plate
Back of Plate
#4:
TYPICAL
TANDEM
DAMPER
WIRING
3
#3:
EWC-ST-2E
WITH
MCS-DXB
REMOTE
SELECTOR
SWITCH
#5:
CONTROL
OF
UP
TO
FOUR
DAMPERS
PER
ZONE
USING
EXTERNAL
RELAY
K9
K8
X
R
G
W
Y
B
O
1
2
K4
SW1
24V
T'FORMER
K2
K1
K5
OPEN
CLOSE
OPEN
CLOSE
SW2
M1
M2
M4
M6
ZONE2
M1
M2
M4
M6
ZONE1
MOTOR
MOTOR
Model
CONTROLS
Englishtown
MA-ND4 TYPE MOTORS ON
ND OR URD TYPE DAMPERS
EWC Controls Inc.
•
385 Highway 33
•
Englishtown, NJ
07726 •
800-446-3110
•
FAX 732-446-5362
CB1
RED
RED
BROWN
ORANGE
GREEN
1
6
4
1
6
4
1
6
4
1
6
4
24VAC TRANSFORMER
40 - 60VA RATING
MAX. NUMBER OF 4 DAMPERS
PER ZONE.
M
ultiple Damper Wiring on a Single Zone, using a Separate Transformer
and an Isolating Relay. Maximum of 4 dampers per 40 va transformer.
M1
M2
M4
M6
ZONE
MOTOR
4
6
1
4
6
1
4
6
1
2
1
3
COIL
24 vac
NC
NO
C
R1
Isolation Relay
SPDT action with 24 vac coil
Relay is shown de-energized.
All dampers are closed.
To Line Voltage
Provide over current
protection
4
6
1
Separate 24 vac
Transformer
TYPICAL FEEDER CONDUCTOR
TYPICAL JUNCTION POINT
L1
L2
H
C
One relay coil=One motor.
Don’t overload your power
transformer, by connecting
too many relays.
R
G
Y
W
O
B
ZONE 2 THERMOSTAT
R
G
Y
W
O
B
ZONE 1 THERMOSTAT
