Enertech Global
68
EAV - EME/EMD Rev. A Models
Installation and Operations Manual
1 2 3 4
ZONE 1
1 2 3 4
ZONE 2
1 2 3 4
ZONE 3
1 2 3 4
ZONE 4
1 2 3 4
ZONE 5
1 2 3 4
ZONE 6
2 WIRE ZONE VALVE
(NO END SWITCH)
MUST USE JUMPER
TACO
3 WIRE
ZONE VALVE
1
2
3
JUMPER
3 & 4
MOTOR
END
SWITCH
4 WIRE ZONE VALVE
(POWER OPEN,
SELF CLOSING)
ZVC 406 – 4
SIX ZONE
ZONE VALVE CONTROL
24 VAC
FACTORY INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
POWER IN 24 VAC
24 VAC
FACTORY INSTALLED
TRANSFORMER
120 VAC
INPUT
WHITE
BLACK
N/O COM N/C
PUMP END
SWITCH
ZONE 6 PUMP
END SWITCH
THERMOSTATS (24VAC)
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
VALVE 5
T STAT 6
VALVE 6
POWER
LED
INDICATORS
T STAT 5
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6
ISOLATED
X
X
END SWITCH
THERMOSTATS (24 VAC)
PRIORITY
24 VAC ZONE VALVES
PRIORITY
X
X
ZONE 6
PRIORITY
OFF
ON
FUSE
5 AMP
R W
R W
R W
R W
C
C
C
R W C
C
FUSE
5 AMP
R W
C
Powered from Transformer
A
Powered from Transformer
B
A
B
Powered from Transformer
A
Powered from Transformer
B
Section 8: Field Wiring
Diagram HTG-1: Taco ZVC406 Radiant Heating Only
(Enertech part # ATEZVCA)
EM Indoor Module
HEA
T
Use these terminals
to enable system
pump (see piping
diagrams).*
*These contacts will close with a call from any thermostat. For constant speed pump, use these contacts to power the
pump when there is a heating call (break the “L” terminal for a 115V pump). For variable speed pump, use these contacts
to enable the pump (typically a contact closure will “tell” the pump to start modulating).
Diagram HTG-1: Taco ZVC406 - Radiant Heating Only
Section 8: Field Wiring
