Orbit WaterMaster 57674 Manuel D'installation page 10

WTM220330 57962-24 rG.qx
Using the upper mark on the template, insert a No. 8 screw (included) at eye
level leaving the screw head about 1/8th inch (3mm) out from the wall. (Use
expanding anchors in plaster or masonry if necessary).
Slip the slotted keyhole in the back of the controller box over the extended
screw [Figure 19].
Push a No. 8 screw (included) through the Bottom Mounting Hole [Figure 19]
in the controller box and tighten until the box is held firmly to the wall, but
do not over-tighten.
The Controller has separate compartments for the AC line power input and the
low voltage outputs. You must keep the input power and the low voltage in their
separate places when wiring the
controller box.
The controller has a built in trans-
former that must be connected to
an AC line voltage source. Check
the back of the controller box for
power requirements. This connec-
tion should be made by a licensed
electrical contractor in accordance
with the requirements of the
National Electrical Code and other
state and local codes.
Wiring the AC input
Caution: do not connect the controller to one phase of a there-phase power system
used by a pump or other electrical equipment.
The controller has a nipple-mounted external power connection [Figure 21]. Use
this 1/2 inch (13mm) NPT nipple to connect the controller to a standard electri-
cal junction box that should be UL Listed (or equivalent) or comply with IEC or
EN standards (or equivalent).
Turn off the AC power at the AC circuit breaker and apply an appropriate
safety lockout. Verify that the power has been turned off to the installation site
using an AC voltmeter set for the correct measurement range.
Use power feed wire of 14 gauge (AWG) minimum with a temperature rating
of 155 degrees Fahrenheit (68 degrees Celsius) or higher.
Install the conduit and associated fittings. Connect the AC electrical power
wiring to the source by following all the right codes and local standards.
Connect the junction box (not included) to the NPT nipple [Figure 21].
Connect the source power conduit to the entrance of the junction box, fol-
lowing all the appropriate codes.
Connect the source wires to the wires extending from the controller. Take
care to follow the correct color code. For USA: connect the Green for
Ground, Black for Live, and White for Neutral. Often the source ground may
be bare copper conductor rather than green wire. For Europe: Live is Brown
and Neutral is Blue, there is no ground connection required. Be sure that all
wires are connected to the proper source wire.
Make sure all connections are made with code-approved insulated connec-
tors.
Be sure to place a weatherproof gasket and lid on the junction box.
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OPEN
'AA' SIZE BATTERY 'AA' SIZE BATTERY
1 2 3 4 5 6 7 8 9 10 11 12 PUMP COM1 COM2
1/2" (13mm) NPT Nipple 1/2" (13 mm)
NPT Nipple
Junction Box Junction
Box
Wire Connectors
Wire
Connectors
FIGURE 21: AC Wiring Using Junction Box
7
Installing Valves, Pump Start
s e c t i o n
Relays & Master Valves
1. Wiring the Electric Valves
If the distance between the controller and valves is under 700 feet (210
m), use WaterMaster ® sprinkler wire or 20 gauge (AWG) plastic jacketed
thermostat wire to connect the controller to the valves. If the distance is
over 700 feet (210 m), use 16 gauge (AWG) wire. Terminals accept up to
14 gauge wire. The wire can be buried in the ground; however, for more
protection wires can be pulled through conduit and buried underground.
Be careful to avoid burying the wires in locations where they could be
damaged by digging or trenching in the future.
Wire
Connectors
in Grease Caps
Common
Wires
Solenoids
FIGURE 22: Connecting Timer Wires to Valves
Each valve has two wires. One wire is to be connected as the common.
The common wires for all the valves can be connected together to one
common wire going to the timer. The other valve wire is to be connected
to the specific station wire that will control that valve
[See Figure 22].
All wires should be joined together using wire nuts, solder, and/or vinyl
tape. For additional protection to waterproof connections, a WaterMaster®
grease cap can be used.
To avoid electrical hazards, only one valve should be connected to
each station.
2. Connecting Valve Wires to the Timer
Remove the terminal compartment cover.
Strip 1/4" (6 mm) of the plastic insulation off the end of each wire.
Determine which valve you want to connect to which station. Connect
8
Jacket
Specific
Zone Wire
Valves