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the furthest water sensor location from the controller. All other sensors should tap into this one sensor cable (see sensor
diagram #1 for wiring options). GRI recommends that a sensor be placed in each location where flooding from broken or
leaking water lines may occur. Only closed loop water sensors can be used with this system such as the GRI 2600 and 2600T
water switches. All water sensors should be installed according to manufacture instructions and wired into WVS System in
compliance with one of the electrical diagrams provided with this system.
The WVS Controller and Sensor cable will only provide enough current to power a maximum of five GRI 2600 water switches
along with one 2600WVS Sensor (6 sensors total). If other relays will be powered off the Controller then a maximum of 100mA
should be limited for sensor power in addition to the one 2600WVS. If more power is needed for additional sensors then an
external power source should be used for the additional sensors. (See sensor diagram #2.)
The Water Sensor Cable will require a minimum of 4 conductors and a maximum cable length of 200 ft. if using 22ga signal
wire or 4 conductors of a 24 ga. cat 5 cable. If more footage of cable is needed to reach all water sensors, then the size of the
sensor cable should increase from a 22 ga to an 18 ga wire, or 2 conductors of cat 5 per connection my also be used, with a
maximum length of 500 ft.
When connecting the water sensors to the water sensor cable and the water sensor cable to the controller, critical attention to
wire colors must be observed. The 4 wire colors that are used with the GRI 2600WVS, 2600 and 2600T are Red, Black, Green
and White.
The Red wires will always go to the sensors power + 12VDC (terminal # 10) and the Black wires will always go to ground -
GND (terminal # 9). When connecting these wires to the sensor cable, observe the conductor color for that type cable and
maintain that color match for all taps made for additional sensors.
The Green wire for the GRI 2600WVS is the Sensor Control Wire, this wire tells the controller all voltages are correct from the
controller to the end of line sensor. This wire will need to go directly from the 2600WVS sensor to the controller Sensor Cntr
(terminal #7) with no taps and with as few splices as possible.
The white wire for the GRI 2600WVS is the Alarm Signal wire, this wire when open tells the controller to alarm and close the
valve. Splice this wire to the sensor cable (observing color match) and then splice all additional normally closed contacts for
each additional water sensor to this sensor cable wire (observing color match). Then connect this sensor cable wire to the
controllers Alarm Sig (terminal #8). (See WVS diagram).
The Green and White wires for the GRI 2600 and 2600T are the normally closed contact for this water sensor, these wires are
used for splicing into the sensor cable Alarm Signal Wire (See WVS diagram).
The GRI 2600WVS should be the first sensor installed and then tested with the controller before connecting any additional
sensors to the sensor cable.
2600WVS/ Wire Color WVS Controller / Terminal #
Sensor Control Green Sensor Cnt 7
Sensor Alarm White Sensor Alrm 8
Ground Black Sensor Gnd 9
+ 12VDC Red Sensor Pwr 10
STEP 5 – REMOTE CONNECTIONS
The GRI Water Valve Shutoff system can be used to signal remote device of alarm conditions. Relay contacts are available
on the controller at terminals #11, 12 and 13. Connecting either the normally open or normally closed contacts to a security
panel or a phone dialer will allow for remote notification of either an alarm from a tripped water sensor or both an alarm
condition and a trouble condition if found during self testing. (See remote diagram.)
JP 2 is used for controlling of these options. With a jump block on JP 2 the relay will trip only if an alarm occurs, and without
the jumper, the relay is configured to trip with either an alarm or a trouble condition.
The WVS can also be remotely signaled to close the valve, this is done by connecting a remote device to terminals #2 and
#14. Closing the circuit between these terminals, places the controller into a lockout feature. When placed in this configuration
the controller places the valve assembly into the fully closed position and will continually annunciate and indicate the closed
condition. This also locks out the reset button on the face plate of the controller preventing any local control of the WVS
system. Local control can be regained by either remotely removing the closed circuit, or by disconnecting the circuit at
terminals 2 and 14.
