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201: Plumbing and Electrical

“As early as possible, notify your new home builder that you will require a graywater waste line, potable water for makeup supply, and a dedicated 110V / 10Amp power circuit."

Plumbing Specifics:

The IrriGRAY basin is 18" diameter x 30" depth. Additional risers can be added in 12" and 6" increments to raise the assembly to ground level from the stub out depth.

The standard IrriGRAY system has a combination 3" DWV (drainage waste & vent) Schedule 40 inlet, and Overflow to waste. 

An additional 2" waste line is required from the filter backwash waste outlet looped back into the black water line, or looped back into the IrriGRAY overflow pipe, downstream of the basin. Pump to waste outlet is also connected to this same waste line.​

Local codes may require a waste backflow prevention valve downstream of the basin overflow.

Note: Texas TCEQ / State Code now requires two (2) backflow preventers inline of the overflow / graywater overflow connection to waste.

In most US locations, an RPZ (reduced pressure zone backflow prevention assembly) is required for the potable water connection to the filter and makeup water assembly to prevent possible cross connection. The RPZ is not provided with the system as RPZ code requirements vary across the US.

Some local jurisdictions may require a 4" airgap instead of an RPZ - in this case a potable water pump will be required to re-pressurize the water supply as filter cleaning requires at least 20 psi for the disc filter option, and 40 psi for the Twist II Clean filter option.

Electrical

110v AC supply is required for the IrriGRAY controller box. Total maximum power consumption is 400W, requiring a 5 amp power supply. Most electricians supply a 10 amp connection as standard.

The IrriGRAY controller then provides 110v switched power to the pumping basin, as well as a plug and play valve control cable. An additional control cable, also plug and play, connects the controller to the filter and makeup water assembly.

If the pumping basin is located more than 10' from the IrriGRAY Controller box, we recommend installing an weather proof power socket, supplied by the Controller Box for the pump supply.

The pump power plug should not be cut / hardwired because this will void the pump manufacturer's warranty. 

IrriGRAY University