North Star NSC25ED Installation, Operation, Maintenance & Repair Parts page 8

" If making a soldered copper installation, do all
sweat soldering before connecting pipes to the
softener fittings. Torch heat will damage plastic
parts.
" Put grounding clamps (see step 5) on copper
tubes before soldering.
" When turning threaded pipe fittings onto plastic
fittings, use care not to cross--thread.
" Use pipe joint compound on all external pipe
threads.
" Support inlet and outlet plumbing in some man-
ner (use pipe hangers) to keep the weight off of the
valve fittings.
5.
INSTALL GROUNDING WIRE (IF NEED-
ED):
" To maintain electrical ground continuity in the
house cold water piping, install a #4 copper wire
across the removed pipe section, securely clamping
it at both ends (see Figure 2) -- parts not included.
NOTE: A 3--valve bypass system maintains ground
continuity.
FIGURE 2
hose clamp
ground (2)
6.
CONNECT AND RUN THE VALVE DRAIN
HOSE:
" Take a length of 3/8" or 7/16" inside diameter
hose and attach to the valve drain fitting. So water
pressure does not blow the hose off, use a hose
clamp to secure in place.
" Locate the other end of the hose at a suitable
drain point...floor drain, sump, laundry tub, etc.
Check and comply with local codes.
IMPORTANT: Use high quality, thick--wall hose that
will not easily kink or collapse. The water softener
will not work if water cannot exit this hose during re-
generations.
8
ground wire
inlet -- outlet
pipes
" Tie or wire the hose in
place at the drain point.
Water pressure will cause
it to whip during the back-
wash and fast rinse cycles
of regeneration. Also pro-
vide an air gap of at least
1--1/2" between the end of
the hose and the drain
point. An air gap prevents
possible siphoning
sewer water, into the soft-
ener, if the sewer should
''back--up''.
If raising the drain
"
hose overhead is required
to get to the drain point, do
not raise higher than 8'
above the floor. Elevat-
ing the hose may cause a
back--pressure that could
reduce brine draw during
regenerations.
CONNECTING A RIGID VALVE DRAIN TUBE
To adapt a copper drain tube to the softener, use a
hacksaw to cut the barbed end from the drain fitting as
shown. Buy 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 threads
FIGURE 3
barbs
clip cut barbs
from drain fitting
compression fitting,
1/4" NPT x 1/2" O.D. tube
(not furnished)
7.
CONNECT AND RUN THE BRINE TANK
OVERFLOW HOSE (see Figure 4):
NOTE: Move the brine tank (two tank models) into
installation location, next to the resin tank.
" Attach a length of 3/8" or 7/16" I.D. hose to the
drain elbow, installed in step 2, page 7. Use a hose
clamp to hold it in place.
drain fitting
on valve
of
valve drain
hose
TO
floor
drain
1--1/2" AIR GAP
1/2" O.D. copper tube
(not furnished)