ESP-SMT Smart Modular Control System
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ESP-SMT Outdoor Controller
The ESP-SMT outdoor controller has an internal transformer
that reduces standard supply voltage (120 VAC) to 24 VAC
to operate the valves connected to the controller. You will
need to connect power supply wires to the transformer’s
three wires.
F
CAUTION:
To prevent electrical shock, make sure all
supply power is OFF before connecting these wires.
Electrical shock can cause severe injury or death.
A
With the door and face panel removed, locate the
high-voltage compartment in the lower left corner of
the controller cabinet.
B
Using a #1 Phillips screw tip, remove the screw on the
right edge of the compartment cover. Then pull the
cover open to expose the transformer’s primary input
wires.
C
Attach a 1/2” (1,3cm) conduit fitting to the bottom
entrance of the high-voltage compartment. Then
attach conduit to the fitting.
D
Bring three supply wires from the power source
through the conduit into the high-voltage
compartment.
CONNECT
120 VAC
D
C