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21
Installation
ESP-Me Advanced User Manual
Connect Power
d
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WARNING:
DO NOT plug in the transformer or
connect external power until you have completed
and checked all wiring connections.
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WARNING:
All electrical connections and wiring
runs must comply with local building codes.
Some building codes require that only a licensed
or certified electrician can make the power
connections. Please check with your local building
code for guidance. Only professional personnel shall
install the controller.
Electrical Specifications (230V only)
Input
230VAC, 0.2AMP, 50/60Hz
Output
25.5VAC, 1.0AMP, 50/60Hz
Indoor Model
1.
Route the transformer power cord through the conduit
opening at the bottom left of the unit. Knot the cable/
cord inside the controller cabinet to prevent it from
being pulled out.
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CAUTION:
Do not route the power cord through the
field wire opening at the bottom right of the unit.
2.
Connect the two power wires on the cord to the two
24VAC terminal connections on the controller.
3.
Connect the ground wire on the cord to the GND
terminal.
1
2
3
4
VT = VALVE TEST
VT MV COM
2
4
V
A
C
G
N
D
S
E
N
S
VT MV COM
5
6
7
11
12
13
17
18
19
1
2
3
4
8
9
10
14
15
16
20
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22
1.
2.
3.
4.
Plug the transformer into an electrical outlet.
Outdoor Model
The ESP-Me outdoor controller has an internal transformer
that reduces supply voltage (120 VAC in U.S. models; 230
VAC in international models; 240 VAC in Australian models)
to 24 VAC. You will need to connect power supply wires to
the transformer’s three wires. (Line, Neutral, Ground).
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WARNING:
Electric shock can cause severe injury or
death. Make sure power supply is turned OFF before
connecting power wires.
Power Wiring Connections
120VAC (USA)
230VAC (International)
Black supply wire (hot) to the
black transformer wire
Black supply wire (hot) to the black transformer
wire labeled with “L”
White supply wire (neutral) to
the white transformer wire
Blue supply wire (neutral) to the blue
transformer wire labeled with “N”
Green supply wire (ground)
to the green transformer wire
Green-with-yellow-stripe supply wire (ground)
to the green-with-yellow-stripe transformer
wire (
)
1.
Locate the transformer wiring compartment in the
lower left corner of the controller unit. Use a screwdriver
to remove the cover and expose the transformer
connection wires.
1
2
3
4
VT = VALVE TEST
VT MV COM
2
4
V
A
C
G
N
D
S
E
N
S
VT MV COM
5
6
7
11
12
13
17
18
19
1
2
3
4
8
9
10
14
15
16
20
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CONNECT
120 VAC
1.
2.
Route the three external power source wires through
the conduit opening at the bottom of the unit and into
the wiring compartment.
1 2 3 4
VT = VALVE T EST
VT MV CO M
24
VA
C
G
N
D
SE
N
S
VT MV COM
5 6 7
11 12 13
17 18 19
1 2 3 4
8 9 10
14 15 16
20 21 22
2.
