Bypass Valve
The bypass valve can isolate the appliance should the appliance malfunction or leak. It can also permit the use
of untreated water for watering plants, shrubs, or lawns.
The bypass is located on the main control valve. See Figure 12. To engage the bypass, turn the knob to the
Bypass position. The appliance will be bypassed and all water to the home is raw, untreated water. To prevent
untreated water from entering the home, water should not be used inside the home when the appliance is in
Bypass mode. Ensure that the appliance is returned to Service mode when the appliance is repaired or the use
of untreated water is complete by turning the knob to Service.
To blend hardness back into the water using the bypass, turn the knob slightly from the Service position toward
the Bypass position.
Figure 12: Bypass Valve
Optional Plumbing Procedures
This section provides information on plumbing with copper fittings and with plastic pipe.
Hard Plumbing the Bypass With Copper Fittings
Do not use Qest fittings for hard plumbing with copper fittings. When preparing the male threaded fittings of the
I/O adapter, use the following guidelines to avoid damage to the plastic pipe threads.
A.
Wrap the threads three times with 1/2-in. wide Teflon tape. Place each consecutive wrap on top of the
previous wrap.
B.
To prevent tearing of the tape, use Teflon paste on the first two male threads only. The paste lubricates
the tape and fills the small void areas that might exist between the threads. When the joint is complete,
there will be a small bead of sealant at the fitting interface, which indicates a properly joined
connection.
C.
Use a union with a threaded connection to facilitate repair of potential leaks in soldered joints.
D.
Prepare the copper tail assemblies in advance to enable them to cool prior to final assembly. Advance
preparation and cooling will prevent heat damage to the plastic pipe threads of the adapter.
E.
Ensure that the copper tube is long enough to allow fitting clearance with the valve cover in place.
F.
Turn the fitting counterclockwise until you feel the threads engage and then tighten to prevent cross
threading. Do NOT overtighten the fittings.
Caution:
Do NOT allow heat from the torch to transfer to the plastic valve component, which could be
damaged.
HomeGuard
®
Owner’s Manual
9/29/2009
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