NATURALFLOW SERIES NF1500
System Specification & Installation Instructions
If in doubt contact the experts on 0800 628 356 or [email protected]
NaturalFlow Series NF1500 Dose Installation Instructions
The NaturalFlow system is to be installed or signed off by a registered Drain layer to the design specified by
Waterflow NZ Ltd.
The following installation instructions and procedures followed correctly will ensure System performance is
not compromised in any way.
1.
Excavate a 1.4m (wide) x 1.6m (long) level platform for Wormorator® at the appropriate depth, so
when it is placed there is adequate fall to inlet from its source.
2.
Excavate a 1.4m (wide) x 1.6m (long) level platform, below the Wormorator® platform, for the Dose
Chamber and placed so that the Dose Chamber is centered to Wormorator®.
3.
Lay 100mm of bedding metal on platforms and place Wormorator® then Dose Chamber.
4.
Fit the short length of DWV50 supplied, in outlet hole, in base of Wormorator®.
5.
Analyze where Black Water is to enter Dose Chamber and mark center of UNISEAL® @ 790mm high
from base of Chamber. Very carefully drill a 62.7mm hole with a holesaw at marked center and fit
50mm Uniseal (see Uniseal instruction details appendix B below)
6.
Apply some lubrication to the UNISEAL® and carefully connect Wormorator® and Dose Chamber with
DWV50, fitted to Wormorator®. (see UNISEAL® instructions appendix B) N.B. pipe to protrude 50mm
through UNISEAL®
7.
Where possible excavate a trench away from System and lay drain coil and drainage metal at the base
of the system to drain away any surface or ground water. On a flat or high water table site System must
be bedded in as per appendix A below
8.
Trench from Dose Chamber outlet to disposal field, ensuring there is a constant fall from outlet to
disposal field
9.
Analyze where Grey Water is to enter Dose Chamber and mark center of UNISEAL® @ 550mm high
from base of Chamber. Very carefully drill a 127mm hole with a holesaw at marked center and fit
100mm Uniseal (see Uniseal instruction details appendix B below).
10.
Connect Grey Water from source to Dose Chamber
11.
Take a minimum of 2 photos at this point to show correct installation for sign off.
12.
Back fill around tanks with pea metal. DO NOT back fill with soil or clay of any type as this can cause
point pressure on the modules and could cause distortion.
Caution: System must be protected from excessive super imposed loads both lateral and top loads. E.g. loads
from vehicular traffic. There needs to be at least 2m of clearance maintained around system.
Worms: Ensure adequate moisture in the Wormorator® and add worms once installed unless systems is not
going to be used within 2 months of installation.
