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7500-S Carbon Backwash Filter Guide
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rev102418
Best Practices for Piping & Drain Installation
1.
See typical installation (Fig 5). The Carbon Backwash filter is installed after pressure tank
on well systems.
2.
Install on a level floor or surface.
3.
Filter system must be installed at least 10 feet ahead of inlet to water heater to prevent
damage due to back-up hot water or use a check valve to prevent hot water back-up.
4.
DO NOT install the unit in an area of direct sunlight or expose to freezing.
5.
Locate the unit near an unswitched, 120 volt / 60 Hz grounded electrical outlet.
6.
Make sure to connect the IN pipe to the 7500-S inlet and the OUT pipe to the outlet and
install a 3 valve bypass around the 7500-S control valve.
7.
Make sure there is a working gate or ball valve before the 7500-S Carbon Filter and also one
after as shown in Fig 4. The pressure gauges are optional. A hose bib (which is a faucet that
you can attach a garden hose to) is strongly recommended after the 7500-S Filter and
before the second ball valve, for rinsing and sampling water.
8.
If you will be using copper piping, do not sweat the copper pipe directly on to the 7500-S
control valve. Avoid heating up the 7500-S control valve plastic with the torch.
9.
The drain can run up above the control head and out to a drain, although this may require
installing a one way, flapper-stlye check valve.
10.
Most plumbing codes require an air-gap connection, so that if your sewer or septic tank
backs up, it cannot cross connect with the drain tubing (if running tubing into the washing
machine drain pipe, for example)
11.
Your 7500-S filter must be backwashed and rinsed 2 – 3 times on start-up. During the initial
backwashes and rinses, keep the valve after the system closed.
12.
After backwashing and rinsing, open the hose bib after the system and before closed valve,
and run the water until it is clear.
