Watts W100F - Manual (Page 19)

Page 1 WS1TC & WS1.25 TC Manual WS1TC & WS1.25 TC Manual Page 1
and tighten the nut on to the ¾” drain line fitting. The nut is only designed for use with flexible polytube. Use other nuts if attaching
different materials.
To access the drain line flow control remove the locking clip by pulling it straight out. Pull fitting out and replace the locking clip so
that it is not misplaced. The drain line fitting is pressed in and has an o-ring seal.
In the ¾” elbow, the white flow control retainer is pressed in and has an o-ring seal. The retainer can be removed by rotating and
pulling. The flow control can be removed by prying upward with a small blade flat screwdriver in one of the slots on the side. The
drain line flow control and retainer can be chemically cleaned in dilute sodium bisulfite or vinegar, or replaced. Do not use a wire
brush to clean the flow control or the washer. The washers are identified with three numbers, which correspond to the flow rate.
When reinstalling make sure the identifying number and the rounded inside diameter on the washer is visible when seated in the
retainer. The white flow control washer retainer can also be removed and cleaned. Push the retainer in firmly when reinstalling.
In the 1” straight fitting, the retainer is the fitting. Unscrew the nut to access the flow control. The drain line flow control and the
fitting can be chemically cleaned or replaced. Do not use a wire brush to clean the flow control or the fitting.
Do not use Vaseline, oils, or other unacceptable lubricants on o-rings. A silicone lubricant may be used on the black o-ring. Use a
pliers or crescent wrench to tighten or unscrew the nut. Do not use a pipe wrench to tighten or loosen nut. Do not use pipe dope
or other sealants on threads. Use Teflon tape on the threads of the drain line control fitting when installing ¾” NPT or 1” straight
fitting.
Installation Fitting Assemblies
The installation fittings connect to the control valve or the bypass valve using nuts that only require hand tightening. Hand tighten
nut connections between control valve and installation fittings, control valve and bypass valve, and bypass valve and installation
fittings allow for easy serviceability. Do not use a pipe wrench to tighten nuts on installation fittings. Hand tighten only.
The split ring retainer design holds the nut on and allows load to be spread over the entire nut surface area, reducing the chance for
leakage. The split ring design incorporated into the installation fittings allows approximately 2 degrees off axis alignment to the
plumbing system. The installation fittings are designed to accommodate minor plumbing misalignments but are not designed to
support the weight of a system or the plumbing.
When assembling the installation fitting package, connect the fitting to the plumbing system first and then attach the nut, split ring
and o-ring. Heat from soldering or solvent cements may damage the nut, split ring or o-ring. Solder joints should be cool and solvent
cements should be set before installing the nut, split ring and o-ring. Avoid getting primer and solvent cement on any part of the
o-rings, split rings, bypass valve or control valve. Solvent cements and primers should be used in accordance with the
manufacturer’s instructions.
Slip the nut onto the fitting first, then the split ring second and the o-ring last. Hand tighten the nut. If the fitting is leaking tightening
the nut will not stop the leak. Remove the nut, remove the fitting, and check for damage or misalignment of the o-ring.
Do not use pipe dope or other sealant on threads. Use Teflon tape on threaded inlet, outlet and drain fittings. Teflon tape is not
necessary on the nut connection or caps because of o-ring seals.
Do not use Vaseline, oils, or other unacceptable lubricants on o-rings. A silicone lubricant may be used on black o-rings.
Bypass Valve
The bypass valve easily connects to the control valve body using nuts that only require hand tightening. Hand tighten nut
connections between control valve and fittings, control valve and bypass valve, and bypass valve and installation fittings allow
for easy serviceability. The split ring retainer design holds the nut on and allows load to be spread over the entire nut surface
area, reducing the chance for leakage. The split ring design incorporated into the bypass allows approximately 2 degrees off axis
alignment to the plumbing system. The bypass is designed to accommodate minor plumbing misalignments but is not designed to
support the weight of a system or the plumbing.
Avoid getting primer and solvent cements on any part of the o-rings or split rings, bypass valve or control valve. Do not use pipe
dope or other sealant on threads. Teflon tape is not necessary on the caps because of o-ring seals.
Do not use Vaseline, oils, or other unacceptable lubricants on o-rings. A silicone lubricant may be used on black o-rings.