ClearPlus WH5B User Manual

WH5B

Iron / Hydrogen Sulfide
Reduction Filter Package
w/ Sediment Pre-Filter

Package Contents:

• two (2) heavy-duty Pentek Big Blue 20” filter housings (1” NPT) w/ pressure relief button

• one (1) powder-coated dual mounting bracket and related screws

• one (1) Pentek RFFE20-BB radial flow iron reduction filter cartridge

• one (1) Pentek DGD-5005-20 dual-gradient 5 micron sediment pre-filter

• one (1) spanner wrench

The WH5B iron / hydrogen sulfide reduction filter package contains manganese dioxide media
which reduces iron, manganese, and hydrogen sulfide through an oxidation / filtration process,
thereby substantially improving water clarity, taste, and odor, while at the same time protecting
your plumbing system including toilets, bath tubs and showers, and appliances such as clothes
washers and dishwashers, from unsightly staining. It does NOT add any harmful chemicals to the
water, making it completely safe for drinking water applications. A high-capacity 5 micron
sediment pre-filter extends the life of the primary iron filter by trapping sediments, debris, and
oxidized ferric iron particles to prevent pre-mature clogging.

This system should be employed where low to moderate ferrous (dissolved) iron, manganese, or
hydrogen sulfide contamination is known or expected. This filter will also remove ferric iron
through mechanical filtration. This filter is most effective where iron contamination level is less
than 3 ppm (and no greater than 5 ppm) or the hydrogen sulfide level is less than about 2 ppm. If
a combination of iron, manganese, and hydrogen sulfide are present, you must consider the "iron
equivalent" level when determining if this filter will work effectively in your circumstance (see
below). Best contaminant removal rates are achieved where the pH is 7.0 or higher, although
satisfactory contaminant removal can generally be achieved at slightly lower pH levels (6.8 to 6.9)
under most conditions. This filter is not recommended where pH levels are less than 6.8. For best
results, pre-sediment and post-carbon treatment is recommended. A pH level of 8.0 is desirable
for optimal manganese reduction.

The life of the filter depends on the contamination level ("iron equivalent") and amount of water
consumed on a daily basis. You can get a good idea of how long a filter will last in your case by
using the chart below.

"Iron Equivalent" is calculated as follows:

(Iron level) + (2 x Manganese level) + (3 x Hydrogen sulfide level)

If your level of Hydrogen sulfide is unknown (it is hard to accurately test for) and you have a
noticeable "rotten egg" odor, assume a Hydrogen sulfide level of 0.5 ppm. If the rotten egg odor
is severe, assume a level of 1.0 ppm.

Example: Test results are 0.8 ppm iron, 0.05 ppm manganese,

and you have a rotten egg smell in your water. Iron Equivalent = (0.8) + (2 x 0.05) + (3 x 0.5) = 2.4

Approximately life of a RFFE20-BB filter cartridge:

Iron Equivalent

Level in Water

5 ppm 16,000 gal 64 days 128 days 256 days
4 ppm 20,000 gal 80 days 160 days 320 days
3 ppm 26,000 gal 104 days 208 days 416 days
2 ppm 40,000 gal 160 days 320 days 640 days
1 ppm 80,000 gal 320 days 640 days 1280 days

0.5 ppm 160,000 gal 640 days 1280 days n/a

Total Gallons

Water Used

250 GPD

(four people)

125 GPD

(two people)

75 GPD

(one person)

How it Works: Soluble iron (ferrous) and manganese are oxidized and precipitated by contact

with higher oxides of manganese on the media granules. The hydrogen sulfide is reduced by
oxidation to an insoluble sulfur precipitate. The precipitates are then filtered. Ferric iron is
removed by mechanical filtration. No backwashing required!

Specifications

Housing Material: Polypropylene
Housing O-Ring Material: Buna-N
Housing Pressure Drop (each): 1 PSI at 15 Gallons Per Minute (0.1 bar at 57 LPM)
Filter Pressure Drop: <3 PSI @ 6 Gallons Per Minute (<0.2 bar @ 23 LPM)
Maximum Recommended Flow Rate: 6 Gallons Per Minute (23 LPM)
Recommended Operating Temp. Range: 40-100˚F (4.4 to 37˚C)
Maximum Recommended Pressure: 90 PSI (6.2 bar)

Typical Installation:

Note: We recommend that this product be installed by a professional plumber. If you

install this product yourself, please ensure that your installation meets all local building

and plumbing codes. The following instructions are meant only as a general guide and

should not be considered a substitution for your local plumbing and / or building codes.

You will need the following plumbing supplies:

• two (2) shut-off valves with suitable sized unions to connect to your incoming and outgoing
water lines. You can select threaded, compression or sweat (soldered) fittings on the shut-

The plumbing connections on the inlet and outlet of the water filter housings are 1” inside
diameter (female) NPT threaded fittings. You may require additional plumbing adapters to
connect to your selected shut-off valves. Your plumber will have all of these items, or they can be
purchased at your local hardware or plumbing supply store at minimal cost (take these
instructions to the store with you so the store clerk can make sure you get everything you need).
Note: In older homes with galvanized piping all fittings should be threaded.

off valves as desired.

• plumber’s cement or Teflon tape for all threaded fittings.