Electrical installation – Harken HYDRO 2 Power Unit User Manual
Page 13
Hydro 2
13
Electrical Installation
Connect Deck Switches to the ECB
Install the deck switches in a convenient location. By design, two (2) deck switches are used per function. Generally, one switch would
actuate the function motor in a forward direction and the other in the reverse. Example: for a furler, the (A) switch would furl and the (B)
would unfurl.
Connect ECB to Power Supply
Follow these steps to connect power to ECB:
1. Prior to making any connection, verify internal 5A circuit breaker
is in OFF position and system isolation switch on ECB cover is
in OFF position.
2. Pass power supply wires through gland into the ECB case.
3. Connect power supply positive lead to the circuit breaker OCB
terminal 2.
4. Connect power supply common lead to any GND(–) terminal.
Valve
Switch
Wire 1
Wire 2
1
A
+24 -1
SW1A
B
+24 -1
SW1B
2
A
+24 -2
SW2A
B
+24 -2
SW2B
3
A
+24 -3
SW3A
B
+24 -3
SW3B
4
A
+24 -4
SW4A
B
+24 -4
SW4B
5
A
+24 -5
SW5A
B
+24 -5
SW5B
6
A
+24 -6
SW6A
B
+24 -6
SW6B
7
A
+24 -7
SW7A
B
+24 -7
SW7B
8
A
+24 -8
SW8A
B
+24 -8
SW8B
9
A
+24 -9
SW9A
B
+24 -9
SW9B
Note: Polarity is not an issue with 2-wire deck switches
Switch Wiring Table
Note: Deck switches must be N/O (normally open).
Follow these steps to connect deck switches to ECB:
1. Select moisture barrier gland insert.
2. Pass switch wires through gland into the ECB case.
3. Connect deck switch wires per Switch Wiring Table below.
Switch wires connect to terminal strip labeled +24 - X and
SWXX. (See photo).
Note: For wire gauge information, refer to pg. 12.