VIII. Installation Instructions
9
Plumbing codes vary by jurisdiction. Your certified plumber will know the codes for your
area. These notes are provided for informational purposes only, and as a general guide
for your plumber to follow. About Cross Connection Control Devices (CCCD). CCCD is a
generic term that refers to devices or methods that prevent potable water supplies from
being contaminated by non-potable water. A CCCD can be as simple as an air gap, or as
complex as a Reduced Pressure Back Flow Assembly (RPBA). Other common types of
CCCD’s include Double Check Valve Assemblies (DCVA), and simple check valves. Your
local plumbing official will determine which type of CCCD is required for your particular
installation.
Plumber’s Installation Instructions:
Position the1. BRAC SYSTEM in a location so that all connections will remain
accessible. The two secondary 75 Litre tanks will connect to the main tank through
2” threaded ports located on either side of the main tank, and located on the ends
of the secondary tanks. See page 5 for tank dimensions. All BRAC SYSTEMS
tanks must be installed on a solid level surface in a dry area and must be protected
from freezing.
Apply Teflon tape or liquid Teflon to the supplied 2” threaded adapters and install2.
them into the connection ports of each tank. Each connection will have it’s own
shut-off valve and union connection which are also supplied. Install the shut-off
valves so that the handles are in an upright position and can operate freely.
After all threaded connections are made, tighten each union connection as the3.
final step in linking the tanks together.
Calculate the fixture units for the tubs & showers that will drain into the4. BRAC
SYSTEM, then size the inlet, vent and overflow pipes accordingly. Maximum size
of inlet piping can be no larger than 2” in diameter. This would be a maximum of 4
showers connected to the Brac System.
Following local plumbing codes, connect the drain lines from the fixtures to the5.
greywater inlet port of the BRAC SYSTEM. (See figure 1)., Install a bypass and
vent pipe to the overflow drain. For bypass piping, install a Tee “standing up”,
upstream of the greywater ball valve with a minimum of 6” horizontally between
the bypass and vent Tee’s, and then connect to the overflow piping upstream of
the backwater valve. The 6” horizontal length will prevent the loss of greywater
through the bypass during normal operation. (See figure 5).
Install a backwater valve (such as a swing check valve) down stream of the overflow6.
port, and connect the overflow pipe directly to the building drain. (See figure 2).
The vent must terminate to open air, or be connected to another vent that terminates7.
to open air. Check your local codes for venting requirements. (See figure 5).
Install a cross-connection control device (CCCD) on the potable water pipe to the8.
“fresh water in” port of the BRAC SYSTEM. (See figure 3).
For reasons such as power failure, it is recommended that a bypass line with9.
shut-off valves be installed between the “potable water in” and the “greywater
out” lines, downstream of the CCCD. This will ensure that the toilets are supplied
with pressurized water for normal operations at all times. (See figure 3).
