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System Installation
Pre-Installation Considerations
• A minimum of 25psi of water pressure is required for regeneration
valve to operate effectively.
• A continuous 115 volt, 60 Hertz current supply is required.
Make certain the current supply is always hot and cannot be
turned off with another switch.
• Condition of existing plumbing should be free from lime and
iron buildup. Piping that is built up heavily with lime and/or iron
should be replaced. If piping is clogged with iron, a separate
iron filter unit should be installed ahead of the water softener.
• The softener should be located close to a drain.
• Always provide for the installation of a bypass valve.
• The full weight of the plumbing system must be supported by
pipe hangers or other means.
• Do not install the system where it would block access to the water
heater, main water shutoff, water meter, or electrical panels.
• Install the system in a place where water damage is least likely
to occur if a leak develops.
• If applicable, use di-electric unions where dissimilar metals
are present.
NOTICE
The main control valve and all plumbing connections have
right-hand threads. Turn clockwise to install.
NOTICE
If O-ring lubricant is required, only use a silicone based
compound formulated for potable water O-ring applications.
Watts recommends Ordering Code #68102757 Silicone
Lubricant. The use of other types of lubricants may attack
the control's plastic or rubber components. Petroleum-based
lubricants can cause swelling in rubber parts, including
O-rings and seals.
WARNING
!
Do not exceed water pressure of 125psi (8.6 bar). Do
not exceed 110°F (43°C). Do not subject unit to freezing
conditions.
General Installation Instructions
NOTICE
Installation diagrams and additional details are available on
pages 12-13 of this manual.
1. Turn off water heater(s).
2. Turn off the main water supply to the building and open a treated
water faucet (cold and hot) to relieve any pressure within the
plumbing system.
3. Place the mineral tanks into their final position for installation.
Make sure that the location is level and sturdy enough to
support the weight of the system once it is in operation.
4. Unloaded mineral tanks will need to be loaded with resin and
gravel media following the instructions below:
4a. Inspect the distributor screens for damage, and make
sure the screens are present before loading the mineral
tanks with media. Before proceeding with installation,
replace any damaged components immediately.
NOTICE
If 4" X 21/2" PVC tank bushings are included with the system
to adapt the control valve base to a larger control valve tank
connection, ensure the bushings are tightened, fully hand
tight, into the tanks at this time.
4b. Cap the top open end of the distributor tubes with tape
and plastic sheeting to keep all media and foreign debris
from entering the distributor tubes. This cap must be
secure and not come off during media loading.
4c. Place the distributor tubes, screen end down, into the mineral
tanks and center them in the bottom. The top of the dis-
tributor tubes should be flush with the top of the tanks. Test
the tapes cap to make sure they can not come off during the
media loading process.
4d. Make sure the plastic and tape caps are secure to the top
of the distributor tubes, place a funnel on the top of the
tanks and load first the gravel then the softening resin into
the tanks. The caps must not come off of the distributor
tubes during the loading of the media.
4e. Remove the funnel from the top of the tanks and plastic
caps and tape from the top of the distributor tubes. DO
NOT PULL UP ON THE DISTRIBUTOR TUBES when
removing the caps. The distributor tube tops must remain
flush with the top of the tank.
4f. Clean any media from the threads and top of the mineral
tanks. Media in the threads and on the O-ring sealing sur-
face of the tanks can cause tank thread damage and pre-
vent the control valve's O-ring seal from sealing properly.
4g. Lubricate the O-rings on the bottom of the control valve
(distributor tube port O-ring and top of tank O-ring). Use
nonpetroleum based silicone lubricant only. For LCTA-150
series systems press the factory suppled black upper
diffuser into the base of the control valve and then repeat
this step using the second tank adapter.
4h. Place the control valve on top of the tank. When per-
forming this step, seat the top of the distributor tube inside
the distributor port located on the bottom of the control valve
first, then press the control valve down until the control valve
threads come in contact with the tank threads. This ensures
that the distributor tube is properly seated into the bottom
of the control valve. Repeat this step using the other mineral
tank and the second tank adapter.
4i. Tighten the control valve onto the tank with a clockwise
rotation. Be careful not to cross thread the control valve to
tank connection or over tighten it. A hand tight fit is appro-
priate for the control valve torque. DO NOT use a wrench.
Tank or control valve damage could result. DO NOT apply
thread sealant or plumbing tape on the control valve to
tank threaded connection. Repeat this step using the other
mineral tank and the second tank adapter.
4j. Install the interconnecting tube assembly from the control
valve to the second tank adapter. For LCTA-100 series sys-
tems tighten clips with screws provided using a nut driver.
For LCTA-150 series systems tighten flanges (X2) to control
valve and second tank adapter using a wrench.
5. Meter Installation: On LCTA-100 series systems the meter is
pre-installed by the factory. Proceed to installation step 7. For
LCTA-150 series systems, apply a suitable thread sealant to the
male threads of the flow meter and with the meter's direction of
flow arrow pointing in the direction of water flow, install the meter
directly into the outlet port of the system control valve.
6. For LCTA-150 series systems, rotate meter clockwise to tighten,
by gripping the meter on the end connector that attaches to the
control valve with a wrench, and continue to tighten the flow meter
end connector until tight. Then rotate plastic meter body so the
meter cable can be aligned and inserted into the meter's cable
port. DO NOT grip on the plastic meter body with the wrench
when installing the flow meter.
7. For LCTA-100 series systems, attach bypass valve assembly using
clips and screws provided. Hand tighten screws with a nut driver.
9
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