Nelson TWIG handleiding

Handleiding

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To activate a Master Valve: A master valve is an electric valve installed at the main water supply

for the irrigation system. If you damage the irrigation main line, a master valve will shut off the water

to the mainline pipe so it can be repaired. An electric master valve is typically a larger size of the

same type of valve as you would use for your zone valves, but the master valve typically has a 24V

AC solenoid on it that requires continuous power to remain open. However it could have a solenoid

of different voltage as long as it matches the power supplied to it. The valve is installed upstream

from the zone valves on the main line. It can be controlled by any one of the Contact-TWIG four

relays. It is designated as a master valve in the TD200 controller. The power to switch the solenoid

is generally a 24V AC source. The master valve will remain open while any valve in the program is on.

To activate a pump: The internal contact switches are latch type that allows a lower voltage signal

from the Contact-TWIG to close a circuit of higher voltage. The internal contacts can switch on

and off but there is not enough power to run the pump. However, they do put out enough power to

connect wires to a pump start relay (generally 24V AC) which in turn closes a relay that completes

the higher voltage circuit for current ow needed by the pump motor. The sketch below shows an

arrangement of how a master valve and a pump may be wired.

This is a sketch of a typical electric pump layout. In this example one switch is used for the pump and one is used for the

master valve. An experienced certied electrician is to make the wiring in conformance with local electrical code).

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Bekijk gratis de handleiding van Nelson TWIG, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.

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