Install Instructions

VEZ-4x Series, 2-Way/3-Way, NPT Zone Control Valves (1/2 to 1") 2 Installation Guide
G
G0
(Red Wire)
(Black Wire)
24 VAC
Neutral
L
N
(Black Wire )
(White
Wire )
120 VAC
Neutral
(Green
Wire )
GND
24 VAC Fail-Safe (Spring Return)
Actuator “M” MEP-3503 (NO or Fail AB-A)
Actuator “N” MEP-3501 (NC or Fail AB-B)
120 VAC Fail-Safe (Spring Return)
Actuator “P” MEP-3504 (NO or Fail AB-A)
Actuator “Q” MEP-3502 (NC or Fail AB-B)
From Class 2
Transformer
Wiring
+
–
Y
G0
G
24
VAC
Class 2
Transformer for
24 VAC Power
Proportional (Fail-In-Place)
Actuator “A” MEP-3516 (NO or 0 VDC = AB-A)
Actuator “B” MEP-3511 (NC or 0 VDC = AB-B)
24
VAC
Y2
Y1
G
Neutral
Tri-State (Fail-In-Place)
Actuator “F” MEP-3510
0–10 VDC
Class 2
Transformer for
24 VAC Power
Neutral
Terminal
Plug
Terminal
Plug
Terminal
Plug
Block
Cover
Seetheappropriatediagram.
NOTE: AllwiringmustconformtoNECandlocal
codesandregulations.
NOTE: For 120 VAC spring return actuators, the
wiring connection requires a junction box
and ex conduit.
NOTE: For24VACactuators,useClass2
transformers.For24VACspringreturn
actuators,connectionstothewireleads
canbemadeinsidethehousing(remove
thetwoscrewsandpullthehousingoto
accesstheinterior).
CAUTION
For proportional actuators, wire connection
on G is 24 VAC HOT, not ground! G0 and G
must be properly wired for correct function
and full life of the actuator.
Two-Position Spring Return
Proportional and Tri-State