Pentair Fleck 2850s, Service Manual

FLECK

 2850S  Service Manual 

• 

3

INSTALLATION

Water Pressure

A minimum of 20 pounds (1.4 bar) of water pressure is 

required for regeneration valve to operate effectively.

Electrical Facilities 

An uninterrupted alternating current (A/C) supply is required. 

NOTE:   Other voltages are available. Please make sure your 

voltage supply is compatible with your unit  

before installation.

Existing Plumbing

Condition of existing plumbing should be free from lime and 

iron buildup. Piping that is built up heavily with lime and/

or iron should be replaced. If piping is clogged with iron, 

a separate iron filter unit should be installed ahead of the 

water softener.

Location Of Softener And Drain

The softener should be located close to a drain to prevent air 

breaks and back flow.

By-Pass Valves

Always provide for the installation of a by-pass valve if unit is 

not equipped with one.

CAUTION

  Water pressure is not to exceed 125 psi (8.6 bar), 

water temperature is not to exceed 110°F (43°C), 

and the unit cannot be subjected to  

freezing conditions.

Installation Instructions

1.  Place the softener tank where you want to install the unit 

making sure the unit is level and on a firm base.

2.  During cold weather, the installer should warm the valve 

to room temperature before operating.

3.  All plumbing should be done in accordance with local 

plumbing codes. The pipe size for residential drain line 

should be a minimum of 1/2-inch (13 mm). Backwash 

flow rates in excess of 7 gpm (26.5 Lpm) or length in 

excess of 20 feet (6 m) require 3/4-inch (19 mm) drain 

line. Commercial drain lines should be the same size as 

the drain line flow control. 

4.  Refer to the dimensional drawing for cutting height of the 

distributor tube. If there is no dimensional drawing, cut 

the distributor tube flush with the top of the tank.

5.  Lubricate the distributor o-ring seal and tank o-ring seal. 

Place the main control valve on tank. 

NOTE:   Only use silicone lubricant.

6. 

IMPORTANT:

 For valves equipped with 

electromechanical timers and stainless steel meters, 

refer to the Meter Dome and Union Orientation section.

7.  Solder joints near the drain must be done prior to 

connecting the Drain Line Flow Control fitting (DLFC). 

Leave at least 6 inches (15 cm) between the DLFC and 

solder joints when soldering pipes that are connected on 

the DLFC. Failure to do this could cause interior damage 

to the DLFC.

8.  Plumber tape is the only sealant to be used on the drain 

fitting. The drain from twin tank units may be run through 

a common line.

9.  Make sure that the floor is clean beneath the salt storage 

tank and that it is level.

10. Place approximately 1 inch (25 mm) of water above the grid 

plate. If a grid is not utilized, fill to the top of the air check 

(Figure 1) in the salt tank. Do not add salt to the brine tank 

at this time.

11. On units with a by-pass, place in by-pass position. Turn on 

the main water supply. Open a cold soft water tap nearby 

and let run a few minutes or until the system is free from 

foreign material (usually solder) that may have resulted 

from the installation. Once clean, close the water tap.

12. Slowly place the by-pass in service position and let water 

flow into the mineral tank. When water flow stops, slowly 

open a cold water tap nearby and let run until the air is 

purged from the unit.

13. Plug unit into an electrical outlet. Note: All electrical 

connections must be connected according to local codes. Be 

certain the outlet is uninterrupted.

60002 Rev E

Figure 1 Residential Air Check Valve