Pentair 255, LOGIX 740, LOGIX 760 Operation Manual
Operation Manual
Start up and Maintenance
Manuel d’utilisation
Mise en marche et Maintenance
Manual de Puesta en Marcha
Puesta en marcha y Mantenimiento
Steuerung Bedienungshandbuch
Inbetriebnahme und Wartung
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225555 // LLOOGGIIXX 774400 -- 776600
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Valve Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Location selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Water line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Drain line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overflow line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Regenerant line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Start-up of your softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 1 - Program system size . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 2 - Placing conditioner into operation . . . . . . . . . . . . . . . . . 7
Step 3 - Basic programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
World LOGIX settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Step 4 - Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Step 5 - Hardness setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Resetting the control to unprogrammed . . . . . . . . . . . . . . . . . . . . . . . 13
Manual regenerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Flow diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Valve exploded view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SYNOPSIS
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Complete Valve - Front view
Complete Valve - Back view
Control module
mount
Optical sensor
One piece valve
disc spring
Manifold
connection
Regenerant tank
tube connection
Aircheck
Check ball
Injector
and cap
Refill
Controller
Camshaft
Valve
discs
Injector
screen filter
Locking bar
Backwash
drain control
Inlet
Drain
Outlet
Motor
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LCD Display
LCD Display
Manual regen
button
Down
button
Up
Button
Set
button
Secondary valve
motor control
(772 only)
Chlorine generator outlet
(EU and 742/762 versions only)
Lockout connection
(772 only)
AC adapter input
(low voltage)
Sensor input 716
by turbine 760/762
Dry contact signal input 740/742
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INSTALLATION
Location selection
Location of a water treatment system is important. The following conditions are required :
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Level platform or floor.
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Room to access equipment for maintenance and adding regenerant (salt) to tank.
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Ambiant temperatures over 34°F (1°C) and below 120°F (49°C).
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Water pressure below 120 psi (8.27 bar) and above 20 psi (1.4 bar).
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Constant electrical supply to operate the controller.
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Total minimum pipe run to water heater of ten feet (three meters) to prevent
backup of hot water into system.
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Local drain for discharge as close as possible.
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Water line connections with shutoff or bypass valves.
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Must meet any local and state codes for site of installation.
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Valve is designed for minor plumbing misalignments. Do not support weight of
system on the plumbing.
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Be sur all soldered pipes are fully cooled before attaching plastic valve to the
plumbing.
Water line connection
A by-pass valve system should be installed on all water conditioning systems.
Bypass valves isolate the conditioner from the water system and allow unconditioned
water to be used. Service or routine maintenance procedures may also require that
the system is bypassed. Figure 1 and 2 show the three common bypass methods.
Figure 1
256 By-pass for use
with 255 valve body.
Normal operation In by-pass
In Out OutIn
Figure 2
Typical globe valve
by-pass system
Normal
operation
Water
conditioner
Water
conditioner
In by-pass
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Drain line connection
1. 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.
2. The drain line may be elevated up to 6 feet (1.8 m) providing the run does not
exceed 15 feet (4.6m) 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 addditional
10 psi (0.69 bar) of water pressure at the drain connector.
3. 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.
NOTE : Standard commercial practices are expressed here. Local codes may
require changes to the following suggestions. Check with local authorities
before installing a system.
Figure 3
Drain line connection
drain
air gap
WARNING : Never insert drain line directly into a drain, sewer line or trap
(figure 3). Always allow an air gap between the drain line and the wastewater
to prevent the possibility of sewage being back-siphoned into the conditioner.
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