Pentair PRF 1035CS Service Manual page 7

EQUIPMENT INSTALLATION continued
To remove a clip:
1. Turn off water and release water pressure at the valve.
2. Push the water line connectors into the bypass and valve.
This will help release O-rings that may have seated in
place.
3. Remove the clip by inserting a flat blade under the top
center of the clip and lifting (prying up).
CAUTION
Do not use pliers to remove a clip. It is likely the clip
will break.
NOTE: Before turning on the water to the valve, rotate the two
handles on the bypass valve 2-3 times. This will help
seat O-rings and prevent leaking.
Drain Line Flow Control
The drain line flow control (DLFC) 1/2" BSP requires assembly
(Figure 11).
1. Locate parts and a roll of plumber tape (not included).
2. Wrap the tape over threads of the flow control.
3. Screw the flow control and a proper size drain fitting
together. Hand tighten.
4. Place the ball into the flow control and insert the assembly
into the drain line opening.
5. Push the assembly in and secure with the drain line clip.
Typical drain
fitting not
included
Flow Control
Control
Ball
Figure 11
Drain Line Connection
NOTE: Standard commercial practices are expressed here.
Local codes may require changes to the following
suggestions. Check with local authorities before
installing a system.
1. The unit should be above and not more than 20 feet (6.1 m)
from the drain. Use an appropriate adapter fitting with a
hose clamp to connect 1/2-inch (1.3 cm) plastic tubing to
the drain line connection of the control valve.
2. If the backwash flow rate exceeds 5 gpm (22.7 Lpm) or if
the unit is located 20-40 feet (6.1-12.2 m) from drain, use
3/4-inch (1.9 cm) tubing. Use appropriate fittings to connect
the 3/4-inch tubing to the 3/4-inch NPT drain connection on
valve.
3. The drain line may be elevated up to 6 feet (1.8 m) providing
the run does not exceed 15 feet (4.6 m) and water pressure
at the softener is not less than 40 psi (2.76 bar). Elevation
can increase by 2 feet (61 cm) for each additional 10 psi (.69
bar) of water pressure at the drain connector.
4. Where the drain line is elevated but empties into a drain
Where the drain empties into an overhead sewer line, a sink-
type trap must be used.
Secure the end of the drain line to prevent it from moving.
NOTE:
Drain Line Clip
Overflow Line Connection
In the event of a malfunction, the salt TANK OVERFLOW will
direct "overflow" to the drain instead of spilling on the floor.
This fitting should be on the side of the cabinet.
Attach length of 1/2-inch (1.3-cm) I.D. tubing (not supplied) to
fitting and run to drain. Do not elevate overflow line higher than
overflow fitting (Figure 13 Overflow Line Connection).
Do not tie into drain line of control unit. Overflow line must be
a direct, separate line from overflow fitting to drain, sewer or
tub. Allow an air gap as per drain line instructions.
below the level of the control valve, form a 7 inch (18 cm)
loop at the far end of the line so that the bottom of the loop
is level with the drain line connection. This will provide an
adequate siphon trap.
Figure 12 Drain Line Connection
Waste connections or drain outlet shall be designed
and constructed to provide for connection to the
sanitary waste system through an air-gap of 2 pipe
diameters or
1 inch (22 mm) whichever is larger.
Never insert drain line directly into a drain,
sewer line, or trap (Figure 12 Drain Line
Connection). Always allow an air gap between
the drain line and the wastewater to prevent
the possibility of sewage being back-siphoned
into the softener.
Figure 13 Overflow Line Connection
Right Way
Matrix System 368/706W • 7