7
#12: SYSTEM CIRCUIT
#11: THERMOSTAT CIRCUIT
CH ECK OU T PROCEDUR E
#13: DAMPER CIRCUIT
K6
K7
R6
R7
C7
+
C6
+
D11
D12
D10
D6
D4
D9
D5
D3
D21
D22
D20
D19
D24
D23
D25
D26
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
D15
D16
D18
D17
C
W
Y
R
ZONE 3
T'STAT
HEATING MODE
OFF MODE
COOLING MODE
STAT
DAMPER
CALLING
OPEN
NOT CALLING
CLOSED
24 VOLTS
24 VOLTS
COMMON COMMON
O VOLTS
O VOLTS
O VOLTS
O VOLTS
O VOLTS
24 VOLTS
24 VOLTS
24 VOLTS
24 VOLTS
24 VOLTS
INPUT TO PANEL:
COMMON
24 VOLTS
NOTE: Conditions shown are with at
least one thermostat always calling.
When all thermostats satisfy, damper
position will depend on position of
"OPEN-CLOSED" switch. In "OPEN"
position, damper will drive to open
position. In "CLOSED" position, all
voltage is removed from damper motor;
motor will remain in whatever position it
was in when all thermostats satisfied.
If 24 volts is present from M1 to M4 and
M1 to M6, damper motor may either be
turning or stuck between open and
closed postions.
EWC Controls Inc. • 385 Highway 33 • Englishtown, NJ 07726 • 800-446-3110 • FAX 732-446-5362
K9
K8
K3
K5
K4
K2
K1
SW2
SW1
OPEN
OPEN
CLOSE
CLOSE
OPEN
CLOSE
M1
M2
M4
M6
ZONE3
M1
M1
M2
M2
M4
M4
M6
M6
ZONE2
ZONE1
MOTOR
MOTOR
MOTOR
X
R
G
W
Y
B
O
1
2
24V
T'FORMER
EWC-ST-3E
CONTROLS
Englishtown
K9
K8
K3
K5
K4
K2
K1
SW2
SW1
OPEN
OPEN
CLOSE
CLOSE
OPEN
CLOSE
M1
M2
M4
M6
ZONE3
M1
M1
M2
M2
M4
M4
M6
M6
ZONE2
ZONE1
MOTOR
MOTOR
MOTOR
X
R
G
W
Y
B
O
1
2
24V
T'FORMER
EWC-ST-3E
CONTROLS
Englishtown
O VOLTS
24 VOLTS
COMMON
COMMON
24 VOLTS 24 VOLTS
COMMON
COMMON
24 VOLTS
24 VOLTS
CB1
CB1
To Next Page
Loading...
Need help?
General
