16
EQUIPMENT INSTALLATION
Rev E
Drain Line Connection
1. The unit should be above and not more than 20 feet (6.1 m) from the
drain. Use an appropriate adapter fitting 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 conditioner 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 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.
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.
WARNING:
The inlet water must be connected to the inlet port of the
valve. When replacing non-Pentair Water valves, the inlet and outlet may
be reversed. It is also possible for the plumbing to be installed in an
opposite order.
Do not solder pipes with lead-based solder.
WARNING:
Do not use tools to tighten plastic fittings. Over time, stress
may break the connections. When the 1265 or 256 bypass valve is used,
only hand tighten the plastic nuts.
WARNING:
Do not use petroleum grease on gaskets when connecting
bypass plumbing. Use only 100% silicone grease products when installing
any plastic valve. Non-silicone grease may cause plastic components to fail
over time.
NOTE:
Standard commercial practices are expressed here. Local codes
may require changes to the following suggestions. Check with local
authorities before installing a system.
