North Star NST30ED Installation And Operation Manual page 8

4. COMPLETE INLET AND OUTLET
PLUMBING
Pipe fittings must be 3/4" minimum.
Use:
= Copper pipe
= Threaded pipe
= PEX (Crosslinked Polyethylene) pipe
= CPVC plastic pipe
= Other pipe approved for use with potable water
IMPORTANT: Do not solder with plumbing attached to
installation adaptors and single bypass
valve. Soldering heat will damage the
adaptors and valve.Measure, cut, and
loosely assemble pipe and fittings from
the main water pipe to the inlet and out-
let ports of the water softener valve. Be
sure to keep fittings fully together, and
pipes squared and straight.
Be sure hard water supply pipe goes to the water sof-
tener valve inlet side.
NOTE: Inlet and outlet are marked on the water sof-
tener valve. Trace the water flow direction to
be sure hard water is to inlet.
IMPORTANT: Be sure to fit, align and support all
plumbing to prevent putting stress on
the water softener valve inlet and outlet.
Stress from misaligned or unsupported
plumbing may cause damage to the
valve.
Complete the inlet and outlet plumbing for the type of
pipe you will be using.
5. COLD WATER PIPE GROUNDING
The house cold water pipe (metal only) is often used
as a ground for the house electrical system, The 3-
valve bypass type of installation, shown in Figure 4,
will maintain ground continuity. If you use a plastic
bypass valve at the unit, continuity is broken. To
restore the ground, do the following:
Purchase and securely install two grounding clamps
and a #4 copper wire across the location where the
softener will be, tightly clamping it at both ends, as
shown in Figure 10.
NOTE: Check local plumbing and electrical codes for
proper installation of grounding. The installa-
tion must conform to them.
Installation Instructions
Clamp
(2 - not included)
6. INSTALL VALVE DRAIN HOSE
a. Measure, cut to needed length and connect the 3/8"
drain line (provided) to the water softener valve
drain fitting. Use a hose clamp to hold the hose in
place.
NOTE: Avoid drain hose
runs longer than 30
feet. Avoid elevat-
ing the hose more
than 8 feet above
the floor. Make the
valve drain line as
short and direct as
possible.
NOTE: If codes require a
rigid drain line see
Figure 12.
b. Route the drain hose or
copper tubing to the
floor drain. Secure
drain hose. This will
prevent "whipping'' dur-
ing regenerations. See
"Air Gap Requirements"
section.
CONNECTING A RIGID VALVE DRAIN TUBE:
To adapt a copper drain tube to the softener, cut the
barbed end from the drain fitting, as shown. Obtain a
compression fitting (1/4" female pipe thread x 1/2" O.D.
tube) and needed tubing from your local hardware store.
1/4" NPT
Compression Fitting,
Clip
Threads
1/4" NPT x 1/2" O.D.
Cut barbs from drain fitting (pull
clip and remove elbow from valve)
8
Ground Wire
(not included)
FIG. 10
Drain Fitting
on valve
Valve
Drain
Hose
1-1/2"
Air Gap
1/2" O.D.
copper tube
tube (not provided)
(not provided)
FIG. 12
To
Floor
Drain
FIG. 11