Culligan Premier Series Installation, Operation And Service Instructions page 21

Deionizer Typical Installation
Deionizers produce low conductivity water usually in the 5-100 ųs/cm range, which means the water is aggressive and
wants to dissolve any material with which it comes in contact. Drain lines and product lines must be made of corrosion
resistant materials, such as PVC, CPVC, or stainless steel.
The deionizer has an inlet, an outlet, and four drain lines. It is recommended that manual valves be installed on the inlet
and outlet of the system for servicing. The cation drain (C5) will transport waste acid, the anion drain (A6) will transport
waste caustic soda, and the backwash drains (C4 and A5) will transport low quality waste deionized water. Water from
the cation and anion drains MUST ALWAYS be neutralized prior to sending it to the city sewage system. This can
be governed by local plumbing codes and discharge permits. The maximum recommended height for the drain lines is
eight (8) feet above the top of the unit. When using a recirculation pump, installation of a check valve on the inlet of the
DI is required to prevent deionized water, acid or caustic from being fed into the incoming lines. The recirculation pump
comes with a flow control, check valve, hose and all necessary fittings to install the unit as shown in Figure 8 and
9.
MINIMUM DRAIN HEIGHT - 3 FEET
MAXIMUM DRAIN HEIGHT - 8 FEET
PRESSURE REGULATOR
MANUAL INLET VALVE
INLET
CHECK
VALVE
ACID
DRAW TUBE
ASSEMBLY
HYDROCHLORIC
ACID
Cat. No. 01024000
VACUUM
BREAKERS
C4
BALL
VALVE
FLOW
CONTROL
SAMPLE
VALVES
C5
CHECK
VALVE BALL
VALVE
OPTIONAL
RECIRCULATION
PUMP
Figure 8. Deionizer installation, front view.
A5
A6
NOTE: If you are going to heat the caustic drum, make sure that
it is positioned close enough to the Caustic Tank to ensure that
the caustic chemicals do not cool before reaching the tank.
TO WASTE TREATMENT SYSTEM
OR RECYCLE SYSTEM
OUTLET TO PROCESS
TO WASTE TREATMENT SYSTEM
CONTROL
MANIFOLD
REGULATOR
CAUSTIC
DRAW TUBE
ASSEMBLY
SODIUM
HYDROXIDE
MANUAL
OUTLET
VALVE
OPTIONAL
FLOW
METER
Installation
Figure
17