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© 1995-2017 Energy Saving Products Ltd.
115 V
AC
RELA
Y WIRING
A3
A2
A1
L
N
24 V
AC
RELA
Y WIRING
A3
A2
A1
L
N
R
DR
Y CONT
ACTS
RELA
Y WIRING
A3
A2
A1
L
N
SAMPLE
AUXILIAR
Y RELA
Y WIRING OPTIONS FOR HEA
TING (W1 OR W2)
C
SAMPLE
AUXILIAR
Y RELA
Y WIRING OPTIONS FOR HEA
TING (1 ST
AGE - W2 ONL
Y)
A3
A2
A1
L
N
115v CIRCULA
TOR
DR
Y CONT
ACTS
AND 1
15 V
AC
RELA
Y WIRING
DR
Y CONT
ACT
TO BOILER
EXTERNAL
SPDT RELA
Y
24 V
AC COIL
FZ
W1
Y2
Y1
FZ
W2
T
T
C
R
R
- 24 V
AC OUTPUT
W1
- FIRST
ST
AGE HEA
T
W2
- SECOND ST
AGE HEA
T
(OR SINGLE ST
AGE)
Y1
- FIRST
ST
AGE COOLING
Y2
- SECOND ST
AGE COOLING
(OR SINGLE ST
AGE)
C
- 24 V
AC COMMON
G
-
THERMOST
AT
F
AN SWITCH
D
- PRIORITY
(RUNS
AT
W SPEED)
O/B
- HEA
TPUMP
REVERSING V
AL
VE
N
- NEUTRAL
L
- LINE VOL
TAGE
A1
-
AUXILIAR
Y NORMALL
Y OPEN
A2
-
AUXILIAR
Y NORMALL
Y CLOSED
A3
-
AUXILIAR
Y COMMON
FZ
- FREEZE ST
AT
FZ
- FREEZE ST
AT
W1 W2
-
CONDENSING UNIT (Y2) 24V OUTPUT
C
-
R
- 24 V
AC
- HEA
TING (W1) 24V OUTPUT
- HEA
TING (W2) 24V OUTPUT
Y2 Y1
-
CONDENSING UNIT (Y1) 24V OUTPUT
24 V
AC COMMON
OUTPUT
FOR SINGLE ST
AGE OPERA
TION
USE W2 &
Y2 TERMINALS
Y
C
CONDENSER
THERMOST
AT
W
C
R
Y
G
ANTI-ICE CONTROL
W
C
G
R
Y
W1
W2
C
R
Y2
Y1
D
O/B
G
R
Y1
W2 W1 FZ FZ
Y2
C
A3 A2 A1
L
N
J5
J7
J4
1 Stage Cooling 1 Stage Heating
W1
W2
C
R
Y2
Y1
D
O/B
G
R
Y1
W2 W1 FZ FZ
Y2
C
A3 A2 A1
L
N
J5
J7
J4
O/B
Y2
Y1
R
C
W1
CONDENSER
THERMOST
AT
ANTI-ICE CONTROL
E
W2
C
R
Y2
G
Y1
2 Stage Cooling 1 Stage Heating
W1
W2
C
R
Y2
Y1
D
O/B
G
R
Y1
W2 W1 FZ FZ
Y2
C
A3 A2 A1
L
N
J5
J7
J4
O/B
Y2
Y1
R
C
W1
CONDENSER
E
W2
C
R
Y2
G
O/B
THERMOST
AT
Y1
ANTI-ICE CONTROL
2 Stage Cooling 3 Stage Heating
Heatpump
E
W2
C
R
Y2
G
O/B
Y1
ANTI-ICE CONTROL
O/B
Y
Y
R
C
W1
CONDENSER
E
W2
C
R
Y
G
O/B
THERMOST
AT
W1
W2
C
R
Y2
Y1
D
O/B
G
R
Y1
W2 W1 FZ FZ
Y2
C
A3 A2 A1
L
N
J5
J7
J4
1 Stage Cooling 2 Stage Heating
Heatpump
Y
R
G
C
W2
E
O/B
HEA
TING MODE: REFER
TO
AUXILIAR
Y CONT
ACT
INFORMA
TION
FOR W1
AND W2
HEA
TING MODE: REFER
TO
AUXILIAR
Y CONT
ACT
INFORMA
TION
FOR W1
AND W2
SAMPLE
AUXILIAR
Y RELA
Y WIRING OPTIONS FOR HEA
TING
(W1 OR W2)
24v
, DR
Y CONT
ACTS
AND 1
15 V
AC
RELA
Y WIRING
W1
W2
C
R
Y2
Y1
D
O/B
G
A3
A2
A1
L
N
T
T
DR
Y CONT
ACT
TO BOILER
EXTERNAL SPDT RELA
Y
24 V
AC COIL
115 V T
O
CIRCULA
TOR
FZ
W1
Y2
Y1
FZ
W2
C
R
(W2)
24v OUTPUT
(W1) 24v OUTPUT
W1
- FIRST ST
AGE HEA
T
W2
- SINGLE ST
AGE OR 2ND ST
AGE HEA
T
HE-Z-L
V-Z-Extended-W
iring-Pg-1-082615
Extended wiring diagrams for the various applications the Hi-Velocity HE-Z model can be used for. If you do not find the wiring
configuration you require, please call the technical department at Energy Saving Products Ltd. for further assistance.
HE-Z Fan Coil - Extended Wiring Diagrams
-26-
Module WIR
Hi-Velocity Wiring & Settings (6/10)
Module WIR Hi-Velocity Wiring and Settings (6/10)