GE 255 User Manual

Logix 764 Operation Manual

Models: 255

Twin Alternating Twin Parallel Single with Remote

Regeneration Start

Multi-Single Tank with

Lockout

Table of Contents

Safety Information 4

How To Use This Manual 5

Location Selection 8

Outdoor Locations 6

Installation 8

Location Selection 8 Water Line Connection 8 Drain Line Connection 9 Brine Line Connection 9 Brine Tank Overflow Line Connection 9 Electrical Connection 10

Disinfection of Water Conditioning Systems 11

System Operation 12

Cycle Water Flows 12

Camshaft Cycle Positions 13

764 Control Operation 13

Display Icons & Cursors 14

Keypad — Buttons 15

Placing Water Conditioning System Into Operation 16

Level l Programming - 764 Control with 255 Valve, 8 Cycle Conditioner 18

Quick Cycling the Control 255L and 255P 19 Quick Cycling the Control for 255A Systems 20 To Place the 255 Alternating System into Operation: 20

In Service Display 22

Programming Overview 22

Level II Programming – P Values 23

Programming the Lockout Feature 24

Level lll Cycle Programming – C Values 25

Level IV Viewing History - H Values 26

Program Reset 26

Manual Regeneration Options 27

Regeneration Modes for Parallel Systems 28

Wiring Diagrams 29

Parts Lists 31

255 Exploded View & Parts List 31 Bypass Valve and Turbine Adapter 33 Manifold Kits 34

Troubleshooting 35

Safety Information

This water conditioner’s control valve conforms to UL/CE Standards. Generic valves were tested and certified for compliance as verified by the agency listing.

• Please review the entire Installation and Operation Manual before installing the water conditioning system.

• As with all plumbing projects, it is recommended that a trained professional water treatment dealer install the water conditioning system. Please follow all local plumbing codes for installing this water conditioning system.

• This system will not make microbiologically unsafe water safe. Water that is unsafe must be treated separately from this conditioner.

• This water conditioning system is to be used only for potable water.

• Inspect the water conditioning system for carrier shortage or shipping damage before beginning installation.

• Use only lead-free solder and flux, as required by federal and state codes, when installing soldered copper plumbing.

• Use caution when installing soldered metal piping near the water conditioning system. Heat can adversely affect the plastic control valve and bypass valve.

• All plastic connections should be hand tightened.

Teflon

tape may be used on connections that do not use an O-ring seal. Do not use pipe dope type sealants on the valve body. Do not use pliers or pipe wrenches.

• Do not use petroleum-based lubricants such as Vaseline, oils or hydrocarbon-based lubricants. Use only 100% silicone lubricants.

• Use only the power transformer supplied with this water conditioning system.

• All electrical connections must be completed according to local codes.

• The power outlet must be grounded

• Install an appropriate grounding strap across the inlet and outlet piping of the water conditioning system to ensure that a proper ground is maintained.

• To disconnect power, unplug the AC adapter from its power source.

• Observe drain line requirements.

• Do not support the weight of the system on the control valve fittings, plumbing, or the bypass.

• Do not allow this water conditioning system to freeze. Damage from freezing will void this water conditioning system’s warranty.

• Operating ambient temperature: 34° to 120°F (1° to 49°C).

• Operating water temperature: 34° to 100°F (1° to 38°C).

• Operating water pressure range : 20 to 120 psi (1.38 to 8.27 bar). In Canada the acceptable operating water pressure range is 20 to 100 psi (1.38 to 6.89 bar).

• Observe all warnings that appear in this manual.

• Keep the media tank in the upright position. Do not turn upside down or drop. Turning the tank upside down or laying the tank on its side can cause media to enter the valve.

• Use only regenerants designed for water conditioning. Do not use ice melting salt, block salt or rock salt .

a. Teflon is a trademark of E. I. duPont de Nemours.

How To Use This Manual

Icons That Appear In This Manual

This installation manual is designed to guide the installer through the process of installing and starting water conditioning systems featuring the Logix 764 controller.

This manual is a reference and will not include every system installation situation. The person installing this equipment should have:

Training in the 764 series control and the 255 valve.

•

• Knowledge of water conditioning and how to

determine proper control settings.

• Adequate plumbing skills.

One Piece Valve Disc Spring

Optical Sensor

Control Module

Refill Controller

Injector and Cap

Check Ball

Regenerant Tank Tube Connection

Air Check

Manifold Connection

WARNING:

Failure to follow this instruction can result in personal injury or damage to the equipment.

Note:

Helpful hint to simplify procedure.

The Logix 764 control can be installed on several type valves that can have twin alternating, twin parallel or single tank configuration. The section on Logix 764 startup provides a simple explanation of the valve types that are pre-programmed in the 764 control.

Breakout Tabs for Wiring

Valve Discs

Camshaft

Motor

Outlet

Drain

Inlet

Knockout Opening for Wiring

Backwash Drain Control

Injector Screen Filter

Locking Bar

Figure 1 255 Valve Layout

LCD Display

SU MO TU WE TH FR SA

Time/Day

Regeneration Time

Salt Amount

Front

Capacity

Hardness

P H

Down Button

No-Salt Detector

(Chlorine Generator)

Set Button

Connection

Multi Single Tank

Back

Lockout & Remote

Regen/Start

Dry Contact Signal Input

Connection

Extension Cable

Connection

Figure 2 764 Controller Identification

PM MIN g/L KG

x100

Lbs/ft³

Up Button

Turbine Input

Manual Regen Button

AC Adapter (low voltage) Input

Main Motor & Optical Sensor Connection

Figure 3 Remote Start/Multi-Tank Lockout Cable

Outdoor Locations

When the water conditioning system is installed outdoors, several items must be considered.

• Moisture – The valve and control are rated for NEMA 3 locations. Falling water should not affect performance. The system is not designed to withstand extreme humidity or water spray from below. Examples are: constant heavy mist, near corrosive environment, or upwards spray from sprinkler.

Figure 4 Twin Sensor Cable

Figure 5 Twin Cable Extension

Location Selection

Location of a water conditioning system is important. The following conditions are required:

• Level platform or floor.

• Room to access equipment for maintenance and adding regenerant (salt) to tank.

• Ambient temperatures over 34

120

F (49oC).

• Water pressure below 120 psi (8.27 bar) and above 25 psi (1.7 bar).

• In Canada the water pressure must be below 100 psi (6.89 bar).

• Constant electrical supply to operate the controller.

• Total minimum pipe run to water heater of ten feet (three meters) to prevent backup of hot water into system.

• Local drain for discharge as close as possible.

• Water line connections with shutoff or bypass valves.

• Must meet any local and state codes for site of installation.

• Valve is designed for minor plumbing misalignments. Do not support weight of system on the plumbing.

• Be sure all soldered pipes are fully cooled before attaching plastic valve to the plumbing.

F (1oC) and below

Caution:

used with a Listed Class 2 power supply suitable for outdoor use.

• Direct Sunlight – The materials used will fade or

• Temperature – Extreme hot or cold temperatures will

• Insects – The control and valve have been designed

• Wind – The cover, when properly installed on the

This unit is for dry location use only unless

discolor over time in direct sunlight. The integrity of the materials will not degrade to cause system failures. If it is necessary to locate the conditioner in direct sunlight, an outdoor cover (PN 1267811) over the valve and control is necessary. Valve skirts (PN 1267808) are available if further protection is required.

cause damage to the valve or control. Freezing temperatures will freeze the water in the valve. This will cause physical damage to the internal parts as well as the plumbing and conditioning resin. High temperatures will affect the control. The display may become unreadable but the control should continue to function. When the temperature returns to normal operating limits the display will re-appear. A protective cover should assist with high temperature applications.

to keep all but the smallest insects out of the critical areas. Any holes in the top plate can be covered with duct tape. The top cover should be installed securely in place.

valve, is designed to withstand a 30 mph (48 Kph).

Unconditioned

Conditioned

water out

water in

Figure 6 Typical Plumbing for Twin Tank Systems.

Unit in Service

WARNING:

Filter media may need to be properly conditioned before the filter is placed into full operation. Consult the original equipment manufacturer for proper procedure.

Unit in Bypass

Figure 7

Installation

All plumbing must conform to local codes. The two tanks should be plumbed to an interconnecting manifold, Figure 6. It is highly recommended that separate brine lines be used for each tank. It is critical for the resin, resin volume, inlet piping, etc. to be identical for both tanks.

WARNING:

fittings. Over time, stress may break the connections. Hand tighten the nuts.

Do not use tools to tighten plastic

Location Selection

The following considerations must be taken into account when selecting the location for the water conditioning system.

• Locate the system as close to a drain as possible.

• If supplementary water treating equipment is required, make sure that adequate additional space is available. Locate the brine tank in an accessible place so that salt can be easily added.

• Do not install any system with less than 10 feet (3 m) of piping between the outlet of the conditioners and the inlet of the water heater. Water heaters can transfer heat down the cold water pipe into the control valve. Hot water can severely damage the conditioners.

A ten-foot (3-m) total pipe run (including bends, elbows, etc.) is a reasonable distance to prevent hot water damage. A positive way to prevent hot water from flowing from a heat source to the conditioners is to install an expandable accumulator tank before the hot water heater. Always conform to local codes.

• Do not locate the unit in an area where the ambient temperature is ever below 34

120

F (49oC).

• Maximum allowable water temperature is

100

F (38oC).

• Do not install the unit near acid or acid fumes.

• Do not expose the unit to petroleum products.

F (1oC) or over

WARNING:

Do not use petroleum grease on gaskets when connecting bypass plumbing. Use only 100% silicone grease products when installing any Autotrol brand valve. Non-silicone grease may cause plastic components to fail over time.

WARNING:

The inlet water must be connected to the inlet port of the valve. When replacing nonAutotrol valves, the inlet and outlet may be reversed. Ensure that the plumbing is not installed in the oppposite order. Tank media may be pushed into the valve.

Water Line Connection

A bypass valve system must be installed to accommodate occasions when the water conditioning system must be bypassed for supplying hard water or servicing. See Figures 7 and 8.

Not in Bypass

Conditioning

System

Figure 8

In Bypass

Conditioning

System

Drain Line Connection

Note:

here. Local codes may require changes to the following suggestions. Check with local authorities before installing a water conditioning system.

The system should be above, and not more than 20 feet (6.1 m) from a drain. Connect an appropriate fitting and 1/2-inch (1.3-cm) plastic tubing to the drain line connection on the rear of the control valve.

If the backwash flow is more than 5 gpm or if the unit is located more than 20 feet (6.1 m) from the drain, use 3/4inch (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.

If unit is located where the drain line must be elevated, you may elevate the line up to 5 feet (1.5 m) providing the run does not exceed 15 feet (4.6 m) and water pressure at the conditioners is not less than 40 psi (2.8 bar).

Where 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 a 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 (Figure 11).

Standard commercial practices are expressed

Brine Line Connection

It is recommended that separate brine lines be used for each tank.

A regenerant tank aircheck is not required when using a 255 valve with the built-in aircheck. Doing so will cause premature checking and may result in hard water or regenerant tank overflow. The 255 aircheck is available standard with a 1/4" NPT tube compression fitting. The use of Teflon tape is required on the 1/4" NPT connection.

Install an appropriate fitting onto the 1/4-inch male NPT connection on the air check (Figure 9), and install a length of 3/8-inch polyethylene tubing between the air check fitting and the brine pick-up tube at the brine tank. If you are using a brine valve remove the ball in the air check to avoid possible premature checking.

Regenerant Tank

Check Ball

Air Check

Figure 9

Note:

vacuum tight so that premature checking does not take place. Premature checking occurs when the ball in the air check falls to the bottom before all brine is drawn out of the brine tank.

Make sure that all fittings and connections are

Tube Connection

Brine Tank Overflow Line Connection

In the event of a malfunction, the brine tank overflow connection directs overflow to the drain instead of spilling it on the floor where it could cause water damage. Complete the following steps to connect the overflow fitting to the brine tank:

1. Locate the fitting hole on the side of the brine tank.

2. Insert the overflow fitting (not supplied) into the tank and tighten with the plastic thumb nut and gasket as illustrated in Figure 10.

Figure 10 Brine Tank Drain

3. Attach a length of 1/2-inch (1.3-cm) tubing (not supplied) to the fitting and run to the drain.

Note:

3 inches (7.6 cm) below the bottom of the overflow fitting. Do not tie into the drain line of the control unit. The overflow line must be a direct, separate line from the overflow fitting to the drain, sewer, or tub. Allow an air gap as in the drain line connection, Figure 10.

the end of the drain line to prevent it from moving (Figure 11).

Do not elevate the overflow line higher than

WARNING:

a drain, sewer line, or trap (Figure 11). Always allow an air gap between the drain line and the waste water to prevent the possibility of sewage being back-siphoned into the conditioner. Secure

Never insert drain line directly into

Air Gap

Electrical Connection

Caution:

only unless used with a Listed Class 2 power supply suitable for outdoor use.

The 764 Series control operates on a 12-volt alternating current power supply. This requires use of the GE Water Technologies supplied AC adapter. A variety of AC adapters are available from your supplier for different applications. They include:

AC Adapter

Standard wall-mount

Outdoor rated

This valve and control are for dry location use

Input

Voltage

120V 60

Application

UL listed for indoor installations

UL listed for outdoor installations

Part

Number

1000811

1235448

Drain

Figure 11

Brine Tank

Normally one brine tank is needed for each tank. The use of block salt or rock salt is not recommended. If a brine shelf is used, two brine tanks are required. This is due to the increased time needed to produce a concentrated brine solution when using a salt shelf. If rapid multiple exhaustions and regenerations are anticipated, do not use a salt shelf even if two brine tanks are used.

120 VAC AC Adapters:

Make sure power source matches the rating printed on the AC adapter.

Note:

the AC adapter is not on a switched outlet. Power interruptions longer than 8 hours may cause the controller to lose the time and day settings. When power is restored, the control will display four dashes (- - :- -) indicating that the day and time settings must be reentered

Note:

transformer at this time. Doing so may cause difficulty in properly placing the unit into operation.

Caution:

grounding when metal inlet and outlet piping is connected to a non-metal valve.

Connect the inlet and outlet piping together using a grounding strap or clamp to establish continuity.

The power source should be constant. Be certain

Do not connect power by plugging in the

Plumbing cannot be used for electrical

Disinfection of Water Conditioning Systems

The materials of construction in the modern water conditioning system will not support bacterial growth, nor will these materials contaminate a water supply. During normal use, a conditioner may become fouled with organic matter, or in some cases with bacteria from the water supply. This may result in an off-taste or odor in the water.

Calcium Hypochlorite

Calcium hypochlorite, 70% available chlorine, is available in several forms including tablets and granules. These solid materials may be used directly without dissolving before use.

1. Dosage

A. Two grains (approximately 0.1 ounce (3 mL)

per cubic foot.

Some conditioners may need to be disinfected after installation and some conditioners will require periodic disinfection during their normal life.

Depending upon the conditions of use, the style of conditioner, the type of ion exchanger, and the disinfectant available, a choice can be made among the following methods.

Sodium or Calcium Hypochlorite

These materials are satisfactory for use with polystyrene resins, synthetic gel zeolite, and bentonites.

5.25% Sodium Hypochlorite

These solutions are available under trade names such as

Clorox for commercial laundries, adjust the dosage accordingly.

. If stronger solutions are used, such as those sold

1. Dosage

• Polystyrene resin; 1.2 fluid ounce (35.5 mL) per

cubic foot.

• Non-resinous exchangers; 0.8 fluid ounce (23.7

mL) per cubic foot.

2. Regenerant tank conditioners

A. Backwash the conditioner and add the

required amount of hypochlorite to the well of the regenerant tank. The regenerant tank should have water in it to permit the chlorine solution to be carried into the conditioner.

B. Proceed with the normal regeneration.

2. Regenerant tank conditioners

A. Backwash the conditioner and add the

required amount of hypochlorite solution to the well of the regenerant tank. The regenerant tank should have water in it to permit the solution to be carried into the conditioner.

B. Proceed with the normal regeneration.

a. Clorox is a trademark of the Clorox Company.

System Operation

Treated Water (Downflow)

Untreated water is conditioned as it flows through the resin bed and up the riser.

Backwash (Upflow) – Cycle C1

Flow is reversed by the control valve, directed down the riser, up through the resin bed and sent to drain. The bed is expanded and debris is flushed to the drain.

Regenerant Draw (Downflow) – Cycle C2a

Water passes through the injector and regenerant is drawn from the regenerant tank. The regenerant is directed to the resin bed. The hardness ions are displaced by sodium ions. Regenerant draw is completed when the air check closes.

Slow Rinse (Downflow) – Cycle C3

Water flow moves the regenerant through the resin at a specific rate and rinses to the drain. The resin is regenerated.

Repressurization – Cycle C4

Pressure is balanced in the valve before continuing the regeneration.

Fast Rinse (Downflow) - Cycle C5

Water passes through the resin bed and up through the riser to drain. All remaining regenerant residual is rinsed from the resin bed.

2nd Backwash (Upflow) - Cycle C6

Flow is identical to C1 Backwash. The resin is reclassified.

2nd Rinse (Downflow) - Cycle C7

Flow is identical to C5 Fast Rinse. The resin bed is rinsed to quality.

Regenerant Refill – Cycle C8

Water is directed to the regenerant tank to create regenerant for the next regeneration.

Cycle Water Flows

Service

Backwash

From Regenerant

Regenerant Draw/

Slow Rinse

Tank

Repressurize

Fast Rinse

Refill

To Regenerant

Tank

a. The camshaft does not change position between the C2 and C3 cycles. C3 is not displayed.

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