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Place the controller's main power switch in the Off position. See Figure 3.
1.
2.
Position the input voltage select switch to the 115V (for 115-120V service) or 230V (for 230-240V service) as
required.
Remove the power wiring access cover located on the back of the power supply assembly. See Figure 4.
3.
Note: The power and equipment ground wires are connected to a terminal block located on the back of the
power supply assembly. The power wire access hole provided will accommodate a 3/4" (19mm) conduit fitting. If
conduit is required by code, install a section of flexible 3/4" (19mm) electrical conduit from the foundation conduit to
this access hole.
4.
Route the appropriate size 3-conductor cable (10 AWG [2.5mm
power supply terminal block.
5.
Reference Table 1 for the appropriate
type of power connection. Secure the
wires to the terminal block as indicated
in Figure 4.
6.
Reinstall the power wiring access
cover.
7.
Apply power to the controller.
Note: The satellite incorporates a 24 V a.c. Hot Post feature on each station output module which enables control
valves to be identified through momentary activation. To utilize the Hot Post feature, the satellite power supply must
be switched on. If you do not wish to use the Hot Post feature, leave the controller's main power switch Off until the
installation has been completed. See Figure 6.
Figure 3
WARNING
HIGH
VOLTAGE
On
Off
Main Power Switch/
1.5A Circuit Breaker
Field Wire Installation
CAUTION: The OSMAC G3 controller is capable of operating up to 12 stations simultaneously when operating with
a pump, or 16 stations simultaneously without a pump. To prevent possible controller damage, total output current load
must not exceed 3.2 amps. If more than one valve per station will be connected, calculate the total in-rush current load
which would be imposed in the maximum operating conditions and use this value as a guide during installation and
operation of the controller.
Procedure
1.
Attach the control and common wires to each valve and/or valve-in-head solenoid leads using an approved
waterproof splicing method. Route the wires into the controller cabinet through the 3" (76mm) conduit.
2.
If an automatic pump start is required, refer to the applicable wiring diagram in Figure 5 (page 4) and install
accordingly.
CAUTION: Do not connect the pump starter directly to the controller's pump start circuit – damage to the
controller will result.
Note: The pump circuit can also be utilized to control a master valve if required.
Table 1
115/120 V a.c. 50/60 Hz (Dom.)
230/240 V a.c. 50/60 Hz (3-Phase)
230/240 V a.c. 50/60 Hz (Int)
3.2A Fuse –
Station Output
115V
4.0A Circuit Breaker –
Input Voltage
Control Functions
Select Switch
] maximum) from the power source location to the
2
AC Service Type
Figure 4
Line
Equipment
Ground
Neutral
Line
Equip. Grnd.
Hot (Black)
Green
Hot (Black)
Green/Yellow
Hot (Brown)
Green/Yellow
3/4" (19mm) Conduit
(Optional)
Neutral
Neutral (White)
Hot (Blue or Red)
Neutral (Blue)
Cover (Side View)
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