GE 255 Valve / 400 Series Benutzerhandbuch

8

1. Ideally located, the unit will be above and not more than 20 feet (6.1 m) from the 

drain. For such installations, use an appropriate adapter fitting (not supplied), to 
connect 1/2-inch (1.3-cm) plastic tubing to the drain line connection of the control 
valve.

2. If the unit is located more than 20 feet (6.1 m) from drain, use 3/4-inch (1.9-cm) 

tubing for runs up to 40 feet (12.2 m). Also, purchase appropriate fitting to 
connect the 3/4-inch tubing to the 1/2-inch NPT drain connection.

3. If the unit is located where the drain line must be elevated, you may elevate the 

line up to 6 feet (1.8 m) providing the run does not exceed 15 feet (4.6 m) and 
water pressure at conditioner is not less than 40 psi (2.76 bar). You may 
elevate an additional 2 feet (61 cm) for each additional 10 psi (0.69 bar).

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.

5. Where the drain empties into an overhead sewer line, a sink-type trap must be 

used.

Never insert drain line into a drain, sewer line or trap. Always 

allow an air gap between the drain line and the wastewater to prevent the 
possibility of sewage being back-siphoned into conditioner.

Figure 6

Standard commercial practices have been expressed here. Local codes 

may require changes to these suggestions.

It will be necessary to install the brine tube and line to a fitting installed on the air 
check. Teflon

*

 tape all threaded connections.

Be sure all fittings and connections are tight so that premature checking does not 
take place. Premature checking is when the ball in the air check falls to the bottom 
before all brine is drawn out of the brine tank. See Placing Conditioner into 
Operation section.

Right Way

Drain Line Tube

Drain

Correct Way

1018075 Rev I.fm  Page 8  Tuesday, February 17, 2004  4:26 PM