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6. ANTI-SIPHON VALVE INSTALLATION
The 400A can be installed directly to PVC pipe with two PVC male
adapters (not included). Inlet 3⁄4 in. FNPT, outlet 3⁄4 in. FNPT.
Rated operating pressure: 10 to 125 PSI
Recommended operating pressure: 10 to 80 PSI
NOTE: The 400A must be installed at least 6 in.
higher than the highest sprinkler head on the system or
back-drainage may occur. Additional control valves must not
be installed downstream of the anti-siphon valve. The valve
must not be operated continuously for more than 12 hours in
any 24-hour period.
Consult local codes for specific details.
1. Flush main line until water runs clear before installation.
2. Shut off main water supply.
3. Install the anti-siphon valve directly to PVC pipe using 3⁄4 in. PVC
male adapters (FigureA1 and A2) or use 3/4 in. schedule 80
nipple. The arrow on valve body indicates direction of water flow.
NOTE: Wrap all fittings with Teflon tape. Do not use pipe cement on
the valve as this will damage the valve and void the warranty.
Make sure when wrapping fittings with Teflon tape that no excess
gets into the internal assembly. Tighten the fittings with a wrench,
but do not over tighten.
4. Turn the main water supply on and pressurize the system.
5. To test the 400A, press the
button. A click will be heard, indicating the valve is
open. A droplet icon
on the upper left of the screen and the run time remaining will
appear on the display in 5 seconds. Check that the system is operating correctly and
press the button again to turn it off. A second click will be heard indicating that the valve
closed. The droplet icon
and the manual icon
and OFF will appear momentarily; then the display will revert to the time of day.
6. The unit is now ready to be programmed.
Figure A1
WATER
FLOW
Figure A2
will disappear from the display
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7. PROGRAMMING
The 400A controller can be programmed to operate on any day(s) of the week, odd
days or even days. In cyclical mode the 400A can also operate from every 1 hour up
to every 12 hours or from once a day up to every 30 days. The 400A has four start
times per day and durations from 1 minute up to 5 hours and 59 minutes.
This section explains the programming features, and the steps necessary to assign
irrigation schedules. To program the timer use the
programming mode, the
to make the entry flash and the
change the value.
NOTE: Only a flashing value can be changed.
NOTE: If the last data entered stops flashing, press
programming and repeat the steps.
8. SETTING CURRENT TIME AND DATE
The timer can display the time in either a 12 or 24 hour format.
To change the time format, from the home screen:
1. Press the
button for three seconds until the
(AM/PM disappears).
SETTING THE CURRENT TIME AND DATE
To enable the timer to operate properly, the current time and date must
be set.
1. Press the
button, until the
of the week.
to select the desired
buttons to
again to resume
display switches format
icon appears along with the time and the day
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