4
Master Valve Wiring
If a Master Valve is to be used, see Figure 4 for station capacity limitations.
1.
Connect one lead from a 24 VAC Master Valve to the controller's black Master
Valve lead (in "C" models, connect to "MV" screw on the terminal strip).
2.
Connect the other Master Valve lead to the controller COMMON (white) along with
the valve common leads (in "C" models, connect to "COM" screw).
CAUTION:
If a master valve Is not being used on the RC-7A, be sure to tape the
end of the black Master Valve lead to prevent any possibility of "shorting."
Main Power Wiring (RC-7A)
The 120 V. step-down transformer is mounted a the lower left portion of the controller
cabinet.
1.
Remove the 3 screws and cover plate at the bottom left side of the cabinet.
2.
The 7/8" dia. hole in the bottom of the cabinet is provided for direct input connection
with a 1/2" conduit fitting.
3.
Connect a 120 Volt-A.C. supply line to the LINE INPUT leads.
Main Power Wiring (RC-7C, RC-4C & RC-1260C)
The 120 VAC step-down transformer is mounted in the lower left hand comer of the
controller cabinet. A
1
/
2
"-14 NPSM conduit nipple extends through the cabinet bottom
for connection to a conduit housing, junction box, or other approved attachment. Make
the electrical connections using wire nuts to connect the transformer leads (white to
white and black to black and green to green or earth ground) to the incoming 120 VAC
Pump Start Capability
The RC series controller can activate an optional 24 volt AC relay for use as a magnetic
starter switch for 117 and 220 volt pump motors. The Rain Bird PMC
(pump motor con-
trol)
connects to the controller using the "MASTER VALVE" and "VALVE COMMON" con-
nections (MV and COM). The high voltage power to the pump passes through the high volt-
age wires and relay in a second compartment in the PMC (see installation instructions with
the Rain Bird PMC).