9
Installation
All plumbing must conform to local codes. The two
tanks should be plumbed to an interconnecting
manifold, Figure-6. It is highly recommended that
separate brine lines be used for each tank. It is
critical for the resin, resin volume, inlet piping, etc. to be
identical for both tanks.
WARNING:
Do not use tools to tighten plastic
fittings. Over time, stress may break the
connections. Hand tighten the nuts.
WARNING:
Do not use petroleum grease on
gaskets when connecting bypass plumbing.
Use only 100% silicone grease products when
installing any Pentair Water brand valve. Non-
silicone grease may cause plastic components
to fail over time.
WARNING:
The inlet water must be connected
to the inlet port of the valve. When replacing
valves, the inlet and outlet may be reversed.
Ensure that the plumbing is not installed in the
oppposite order. Tank media may be pushed
into the valve.
WARNING:
Filter media may need to be
properly conditioned before the filter is placed
into full operation. Consult the original
equipment manufacturer for proper procedure.
Location Selection
• The following considerations must be taken into
account when selecting the location for the water
conditioning system.
• Locate the system as close to a drain as possible.
• If supplementary water treating equipment is
required, make sure that adequate additional space
is available. Locate the brine tank in an accessible
place so that salt can be easily added.
• Do not install any system with less than 10 feet
(3 m) of piping between the outlet of the
conditioners and the inlet of the water heater.
Water heaters can transfer heat down the cold
water pipe into the control valve. Hot water can
severely damage the conditioners.
A ten-foot (3-m) total pipe run (including bends, elbows,
etc.) is a reasonable distance to prevent hot water
damage. A positive way to prevent hot water from
flowing from a heat source to the conditioners is to
install an expandable accumulator tank before the hot
water heater. Always conform to local codes.
• Do not locate the unit in an area where the ambient
temperature is ever below 34
o
F (1
o
C) or over
120
o
F (49
o
C).
• Maximum allowable water temperature is
100
o
F (38
o
C).
• Do not install the unit near acid or acid fumes.
• Do not expose the unit to petroleum products.
Water Line Connection
A bypass valve system must be installed to
accommodate occasions when the water conditioning
system must be bypassed for supplying hard water or
servicing. See Figures 7 and 8.
Figure 8
Drain Line Connection
Note: Standard commercial practices are expressed
here. Local codes may require changes to the following
suggestions. Check with local authorities before
installing a water conditioning system.
The system should be above, and not more than 20 feet
(6.1 m) from a drain. Connect an appropriate fitting and
1/2-inch (1.3-cm) plastic tubing to the drain line
connection on the rear of the control valve.
If the backwash flow is more than 5 gpm or if the unit is
located more than 20 feet (6.1 m) from the drain, use 3/
4-inch (1.9-cm) tubing for runs up to 40 feet (12.2 m).
Also, purchase appropriate fitting to connect the 3/4-
inch tubing to the 1/2-inch NPT drain connection.
If unit is located where the drain line must be elevated,
you may elevate the line up to 5 feet (1.5 m) providing
the run does not exceed 15 feet (4.6 m) and water
pressure at the conditioners is not less than 40 psi
(2.8 bar).
Where drain line is elevated but empties into a drain
below the level of the control valve, form a 7-inch
(18-cm) loop at the far end of the line so that the bottom
Conditioning
Conditioning
System System
Not in Bypass
In Bypass
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