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2.4.2 Installation requirements
When installing the ¼” plastic tubing into the
appropriate fittings – push the tubing in hard, it
should go in about a ¼”. It should be tight into the
fitting and does not come out when you pull on it.
Outlet
(to irrigation)
Drain
(to drain)
Inlet
(from pump)
1.25”+
The drain pipe should be a minimum of 1.25” in
diameter. The length of drain pipe to the drain should
be as short as possible, with no more than two
elbows. Any restrictions in the drain pipe will reduce
the self-cleaning efficiency of the filter.
The HN-G filter cover
can be rotated to best fit existing
plumbing. To rotate the cover, release the clamp,
rotate the cover, and close the clamp.
Unions are required for ease of maintenance and in
order to make installation easier. With unions, at all
recommended spots, the filter may be removed for
service and any threaded connections can also be
easily accessed if any of these need to be tightened
up or resealed due to movement during shipping or
installation.
Install an isolating valve (not supplied) between:
• Inlet and the water supply.
• Outlet union and the irrigation system.
Gauges on the inlet and outlet are highly
recommended to be able to monitor pressure
differential visually.
Drain should not discharge under water level, or in
any way that would provide back pressure, as this will
impede performance
The drain needs to be unobstructed.
If the drain line is longer than 20 feet then it should be
up-sized to 1.5” PVC.
All plumbing (inlet, outlet and drain) should be
supported so stress is not transferred to the filter.
It is highly recommended that
any PVC fittings (including the
ones included with the filter) in
outdoor installations are painted
to block UV exposure from the sun.
Enclosed installations with no sun
exposure do not required the PVC
to be painted for protection.
