Scalemaster SL TWIN E User manual

SL TWIN E
Twin Tank Electric Water Softener with Remote Control
Installation & Operation Manual Effective: 2021
PLEASE READ FULLY BEFORE INSTALLATION

1
PAGE
Contents
The Basics 2
Planning Your Installation 2
Before You Start 3
Installation
Positioning your Water Softener 4
Typical Water Softener installation 5
Connecting the Water Softener 6
Softener Controller - Quick Start 7
Commissioning the Softener 8 - 9
Trouble Shooting 10 - 11
IMPORTANT INFORMATION - PLEASE NOTE:
Before you start installing your Softline Water Softener, ensure that you have all the
correct parts and tools required to install your Water Softener.
YOUR SOFTLINE WATER SOFTENER IS COVERED BY A 5 YEAR PARTS & 2 YEARS LABOUR
WARRANTY. TO ENSURE YOUR WATER SOFTENER IS COVERED IT MUST BE INSTALLED IN
ACCORDANCE WITH THESE INSTRUCTIONS & REGISTERED ONCE INSTALLED.
YOUR WARRANTY DOES NOT COVER RESIN DAMAGE OR DAMAGE TO YOUR WATER
SOFTENER THROUGH INGRESS OF DEBRIS OR CHEMICALS FROM EXTERNAL SOURCES,
INCORRECT INSTALLATION, ON-SITE DAMAGE OR INCORRECT SETTING UP OF THE
UNIT.
In the interests of continuing product development, we reserve the right to make
modifications to the specification of the unit without notice.
DID YOU KNOW?
The salt used in a water softener is not
used to soften the water, it’s used as
part of the cleaning process
(regeneration) that the softener will go
through periodically.
Salt Tablets are readily available
through your local Plumbers Merchant

Thank you for choosing the SL Twin E Water Softener.
It is important that you take the time to read this installation guide. It will tell you in a simple
format how to install your Water Softener and how to start enjoying the benefits of
softened water.
NOTE: This instruction manual applies to the SL TWIN E model only.
The Basics
The Water Softening Process - Hard water enters the water softener, as it passes through
the resin inside the tank the hard water minerals are attracted to the resin and the water is
softened to service the home.
The Regeneration Process - This is the process that the water softener goes through to
cleanse itself. When the resin becomes saturated with the hard water minerals the softener
will automatically enter the regeneration cycle. The brine solution is drawn into the resin
vessel and rinses the hard water minerals off the resin and goes down the drain. Once the
resin is free of hard water minerals, soft water rinses the remaining brine water out of the
system leaving the system ready for service.
The Advantages of a Twin-Tank System - A twin tank system assures that there is always soft
water available. Hard water flows down through the resin in both tanks and the hardness
minerals are trapped. The SL Twin E water softener tracks how much water is treated and
displays the amount of water each tank can still treat.
For example: Left Hand Tank 1m³ Right Hand Tank 0.4m³
When one tank has reached it’s capacity the brine solution is used to flush (regenerate)
the tank out whilst the other tank continues to supply soft water.
Planning Your Installation
Please observe any regulations concerning the installation of your water softener. For
guidance check out the water regulations advisory service web site (www.wras.co.uk).
Check that you have only one rising main, that you have allowed space for access to the
unit for possible future maintenance, servicing and salt replenishment. Check the water
pressure, the ambient temperature, locate the rising main (stop cock), a drain facility and
a power supply.
Unless you are replacing an existing water softener, this installation will require you to carry
out plumbing work and may require an electrical outlet to be fitted near your softener.
You should only attempt this if you have the necessary skills.

3
Before You start
• Make sure you have all necessary parts and tools required before starting the
installation.
• Follow all regulations regarding drainage. If in doubt see the relevant WRAS
guidance notes which can be found at www.wras.co.uk.
• Read this manual carefully. If you have any questions please contact the
Technical Helpline on 07990 064096.
• Check incoming water pressure: minimum 1.4 bar (20 psi), maximum 5 bar (70 psi).
If necessary fit a pressure reducing valve to reduce the incoming water pressure.
• Do not install the water softener close to a heat source. (environment ambient
temperature must be below 40°c ).
• Protect the water softener drain hose and all fittings against frost.
• Make sure you have tested the water for Total Hardness for the area. If in doubt
telephone the Technical helpline on 07990 064096 to obtain this information.
• Remember, if you are not sure ASK!
It is recommended that any water softener is installed by a professional.
Although Softline water softeners are probably the easiest and safest softener on
the market, it is imperative that all necessary precautions are taken.
This installation guide is written to help the professional installer and assumes that this
person has a working knowledge of water softeners and domestic plumbing.
Proper operation of the softener depends on correct installation,
commissioning, maintenance and maintaining the salt level with suitable
salt manufactured for use in water softeners.
What’s in the box:
SL Twin E (Main Unit) SL Twin E (Remote Control) with wall bracket
Plus: Installation Manual (you're reading it!) and Hardness Test Strips.
You will need:
Water Softener Installation Kit
such as a Scalemaster Combi Kit
(Product Code 900827)

Positioning the water softener
• Remember to measure your water softener and the space where it will be installed.
• Remember to allow extra space for connecting pipework when you do your
calculations along with adequate space to allow for future servicing, maintenance
and topping up of salt.
• Where possible the softener should be placed close to the rising main.
• Keep the distance of the incoming main and drainage to a minimum.
• The weight of the water softener is greatly increased when fully operational and filled
with both salt and water so this must be taken into account when choosing where to
site the water softener.
• If putting the softener in a cupboard ensure that the base is adequately supported.
• It is important to carry out a pressure test. High and low water pressure can result in
either damage to or failure of the softener. Your water softener is designed to operate
effectively with an incoming water pressure of between 1.4 bar (20psi) and 5 bar
(70psi). If your water supply is likely to fall outside of these parameters we recommend
that either a booster pump or pressure reducing valve should be fitted accordingly.
• Do not install your water softener next to a boiler or other heat source that will exceed
ambient temperature of 40°c.
• If positioning outside, the softener and any pipework must be protected against frost
and freezing.
IF YOU ARE CONSIDERING INSTALLING YOUR WATER SOFTENER IN A LOFT, THE FOLLOWING
INSTRUCTIONS MUST BE STRICTLY ADHERED TO.
Loft Installation
• The water softener may be installed in a loft or roof cavity but must be situated within a
safety tank of not less than 100 litre capacity. A suitable tank would be a plastic roof
storage tank with an overflow pipe of not less than 20mm diameter. This tank should be
mounted on a board strong enough to spread the weight over a load bearing wall.
The overflow on the tank must be below the softener overflow and be a minimum of
3/4” in size.
Drinking Water
• When fitting your water softener allowance should be made for at least one drinking
water tap that is not fed by the water softener. Where practical this should be at the
kitchen sink but a utility room or other suitable alternative will suffice.
• It is recommended that people on a low sodium diet should not drink artificially
softened water. Water used for mixing infant powder for babies must only be taken
from unsoftened water as artificially softened water contains an increased level of
sodium to which young babies have a limited tolerance.

Typical water softener installation
This schematic diagram of an installation is not to scale and may not be representative
of the layout applicable to your property.
5
240v mains supply
Softened water feed
to house
Incoming mains
stopcock (hard water)
Hard water tee for
drinking water
and / or outside tap
Inlet valve
Outlet valve
Bypass valve
Drain (discharge) hose
Overflow hose *
* Must be protected against frost & freeze damage
FLOW
WATER SOFTENER WATER SOFTENER
FLOW
External bypass schematic
SOFTENER IN BYPASS ‘OFF’ SOFTENER IN SERVICE ‘ON’
Before starting the installation of the valves ensure that the
stop cock is in the closed position.
STOP!

Connecting the water softener:
Once you have completed the installation of the Inlet, Outlet and Bypass valves set the
valves as follows:
• Softener Inlet and Outlet Valves CLOSED
• Bypass Valve OPEN
You can now safely return the stop cock to the open position. Using the hoses provided
within the installation kit connect the straight end of the hose, having first inserted the
fibre washer, to the softener inlet and outlet valves. Connect the angled end to the
softener. The softener inlets and outlets should be marked with the words INLET or OUTLET
or with directional arrows on the softener tails. Normally the softener tails are in a
configuration of three with the centre normally being the waste outlet.
Waster pipe installation.
Connect the waste pipe to the waste outlet on the softener and run the hose to either
an upstand or outside drain. A minimum air gap of 20mm must exist at the end of the
drain line. Softened water will have no adverse effect on a septic tank. Should you need
to extend the drain hose this can be done by connecting to a 15mm copper tube for a
maximum run of 8 meters with a minimum daytime pressure of 40 psi. Ensure that the
drain hose is not kinked or obstructed in any way as this will lead to an overflow of the
softener. The drain hose can run uphill to a maximum of 1 meter with a minimum water
pressure of 40 psi. If running the drain hose outside ensure hose is adequately protected
against frost and freeze damage.
Overflow connection.
The overflow connection is the white 1/2” hose spigot on the rear or side of the cabinet.
The overflow must be run downhill through an outside wall without kinks or restrictions. It is
recommended the overflow hose be visible when it exits the outside wall.
Preparing the Softener to go into service.
Turbine Cable
Overflow hose
Turbine connector
Drain
InletOutlet
Ensure the turbine cable is clipped into
the outlet pipework.
Put approximately 5 litres of water into the
brine tank. You may also at this point put
a quantity of salt into the tank. Do not
allow the salt level in the brine tank to
exceed the height of the overflow. You
should keep the salt level above the
water level and check the salt on a
regular basis until a usage pattern has
been established.

Softener Controller.
The controller provided with the softener allows for remote control over your softener.
The display shows information on the remaining capacity of the left and right tanks, the
current flow rate from the softener and the time.
You can use the controller to begin a manual regeneration or to adjust the time and
hardness settings.
You can set up the softener using either the main screen or the remote, you do not need
to do both.
* To unlock either controller press the Up and DOWN buttons together for 5 seconds.
Either Program the valve using the main display.
When plugging in the softener initially it will display the valve model information - F126
• From the softener home screen press CONFIRM to enter the general settings menu.
• Select ‘Set Time of Day’. Use the UP and DOWN buttons to select the hour (24 hour time
format) press CONFIRM select the minutes again using the UP and DOWN buttons to set
minutes, press CONFIRM the display will now return to the general settings menu.
• Using the DOWN arrow, move to ‘SET REGEN TIME’. This is a factory pre-set at 02;00 and
does not need changing.
• Finally, select ‘Set water hardness’. Using the UP and DOWN buttons set the hardness
for the local area. (See Water hardness conversion chart on Page 13) Press CONFIRM
to return to the general settings menu.
• Press MANUAL/RETURN button to exit the general settings menu.
Or Program the valve using the remote control.
• Setting the Time - Press the CONFIRM button to enter the settings menu, To set the time
press the CONFIRM button again and set the hours using the UP and DOWN buttons.
Press the CONFIRM button again to set the minutes using the UP and DOWN buttons.
• Once the time is set press the DOWN button to enter the ‘SET REG TIME’ which is a
factory pre-set to 02:00 and should not be changed.
• To set the Water Hardness, press the DOWN arrow again and then the CONFIRM
button, set the water hardness for the local area using the conversion chart on page
13.
7
Manual / Return
Menu / Confirm
Down
Up

Commissioning the Softener.
Introduction.
With the softener fully plumbed and the valve programmed, commissioning can start
Regeneration.
When the softener is fully functional the regeneration cycle will happen automatically.
To initiate an immediate regeneration press the RETURN button until the valve motor
starts to turn.
If, during a regeneration cycle you need to skip through the cycle, this can be done in
the following way. To skip to the next stage quickly press the RETURN button and this will
take it to the next stage of the regeneration, this can be repeated to get to the end of
the regeneration cycle.
Service.
Water flows into the valve at the top, down through the resin then up through the ‘riser’
tube in the middle of the vessel. As the water travels through the resin the ion exchange
process takes place. The controllers are set to automatically regenerate on capacity.
The display on the control will show the following; In service and the remaining capacity.
Householder Routine Maintenance.
• Check the salt level (this may need to be done more regularly dependant on
consumption) The salt level should always be above the water level.
• When refilling with salt, fill the salt cabinet to 3/4 full.
• Your softener will use either tablet or granular salt. Ensure this salt is designed for use
with water softeners.
• Check there is no sign of damage or leaks.
• Once the softener is fully functioning you do not top up the water in the salt tank, the
softener will do this automatically.
8

9
Programming the Valve (in case of memory loss).
Should the programming be lost in transit the following instructions in conjunction with
the setting instructions will allow you to re-set it. For time, date and hardness settings
see the quick start guide on page 7. The settings below should not be altered without
good reason.
When the power has been connected the valve will show the valve model and
initialise itself. During the initialisation press and hold the RETURN and DOWN buttons
until the settings menu appears.
Selections are made using the UP and DOWN buttons until the required setting is
displayed. After each setting, press CONFIRM to continue.
Once finished press RETURN until the main display shows.
Set Regeneration Mode A-02 Intelligent Immediate
Set Flow Rate m³
Set Resin Volume 3.5 L
Set Brine D. Type Downflow
Set Backwash Time 02:00 minutes
Set B.S.R.T 35:00 minutes
Set F.R Time 03:00 minutes
Set B.R Time 01:30 minutes
Interval Regen. D. 30 Days
Replace Resin No
Set Regen Times 0300 times
Salt Adding Volume 000kg

Trouble Shooting
Following the below as a guide you can find the most common problems that may arise;
In the first instance, if you have a problem, you should contact your installer. Most
problems are easily cured by following this information.
Problem Cause
1. Softener
fails to
regenerate
A. Electrical service to softener
has been interrupted.
B. Regeneration cycles set
incorrectly.
C. Controller is defective.
D. Motor fails to work.
2. Regenera-
tion time is
not correct
A. Time of day is not correct
B. Power failure more than 3
days
3. Softener
supplies
hard water
A. Bypass valve is open or
leaking (if present).
B. No salt in brine tank.
C. Insufficient water flowing
into brine tank.
D. Internal valve leak.
E. Regeneration cycles not
correct.
F. Bad quality of feed water or
turbine blocked.
G. Adjusting bolt open.
4. Softener
fails to
draw brine.
A. Line pressure is too low.
B. Brine line is blocked.
C. Brine line is leaking.
D. Internal control leak.
E. Drain line is blocked.
5. Softener
uses too
much salt.
A. Incorrect salt setting.
B. Excessive water in salt tank.
6. Excessive
water in
brine tank
A. Overlong refilling time.
B. Water remaining after brine
draw.
C. Foreign material / debris in
brine valve and plug drain
line flow control.
D. Not installed safety brine
valve and power failure
while salting.
E. Safety brine valve
breakdown.
Resolution
A. Assure permanent electrical
service (check fuse, plug and
switch).
B. Reset regeneration cycles.
C. Replace controller
D. Replace Motor
Check programme and reset time
of day
A. Close or repair bypass valve.
B. Add salt to brine tank and main-
tain salt level above water level.
C. Check brine tank refill time.
D. Change valve body.
E. Set correct regeneration cycles in
program.
F. Reduce the inlet turbidity, clean or
replace the turbine.
G. Close the adjustment bolt.
A. Increase line pressure
B. Clean brine line.
C. Replace brine line.
D. Replace valve body.
E. Clean drain line flow control.
A. Check salt usage & salt setting.
B. See problem No.6
A. Reset correct refilling time.
B. Check the injector & remove
debris from brine pipe.
C. Clean brine valve & brine line.
D. Stop water supply & restart
programme install with safety brine
valve in salt tank.
E. Repair or replace safety brine
valve.

11
Problem Cause
7. Pressure
loss or rust
in pipe.
A. Iron in water supply pipe.
B. Iron mass in the softener.
C. Contaminated resin bed.
D. Too much iron in raw water.
8. Loss of resin
through
drain
A. Air in water system
B. Bottom screen broken
C. Improperly used DLFC
9. Control
valve
cycles
continu-
ously
A. Locating signal wiring
breakdown.
B. Controller is faulty.
C. Debris stuck in driving gear.
D. Time of regeneration steps
set to zero.
10. Drain flows
continu-
ously.
A. Internal valve leak.
B. Power off when in back-
wash or fast rinse.
11. Interrupt-
ed or
irregular
brine.
A. Water pressure too low or
not stable.
B. Air in resin tank.
12. Water flow
out from
drain or
brine pipe
after re-
generation
A. Foreign material / debris in
valve which stops valve
closing completely.
B. Water pressure too high
which results in valve in
wrong position.
13. Salt water
going to
service
A. Brine valve cannot be shut
off.
B. Time of fast rinse too short.
13. Circle
water
treatment
capacity
decreases
A. Not regenerating correctly.
B. Fouled resin bed.
C. Salt setting not correct.
D. Softener setting not correct.
E. Turbine has stuck.
Resolution
A. Clean water supply pipe.
B. Clean valve & add resin cleaner.
C. Check back, brine draw & brine
tank refill. Increase frequency of
regeneration & backwash time.
D. Iron removal equipment is required
to install before softening.
A. Assure that well system has proper
air eliminator control.
B. Replace new screen.
C. Check for proper drain rate.
A. Check & connect locating signal
wiring.
B. Replace controller.
C. Clean out debris.
D. Check programme setting and
reset.
A. Check and repair valve body or
replace it.
B. Adjust valve to service position or
turn off bypass valve and restart
when electricity supply is restored.
A. Increase water pressure.
B. Check & find reason.
A. Clean foreign material / debris in
valve body
B. Reduce water pressure or use a
pressure reducing valve.
A. Repair / clean brine valve.
B. Extend fast rinse time.
A. Regenerate according to manual.
B. Increase backwash flow rate and
time, change resin.
C. Readjust brine drawing time.
D. Do a manual regeneration and
then reset regeneration cycle.
E. Disassemble flow meter & clean it
or replace turbine.

DIAGRAM 1
USEFUL INFORMATION:
Water Hardness Conversion Table.

13

IMPORTANT NOTES
YOUR SOFTLINE WATER SOFTENER BENEFITS FROM A 5 YEAR PARTS
& 2 YEARS LABOUR WARRANTY.
FAILURE TO ENSURE THE FOLLOWING POINTS WILL INVALIDATE YOUR
WARRANTY AND MAY INCUR EXTRA COST FOR CALLS MADE BY
SCALEMASTER ENGINEERS TO RECTIFY.
THIS INSTRUCTION MANUAL SHOULD BE LEFT WITH THE CUSTOMER
FOR FUTURE REFERENCE
DATE INSTALLED
……………….…………..
✓
1Has the Water Soener been registered ?
2Has the customer been shown fully how to operate the Water Soener?
3Has the customer been shown how to isolate the unit in an emergency ?
IMPORTANT INFORMATION TO THE OWNER:
• Always use water softener grade salt.
• Do not overfill the water softener with salt.
• Do not fill the salt cabinet higher than the overflow.
• Do not let the softener run out of salt.
• The water softener does not make a noise when operating normally
(not regenerating).
• Do make sure you know how to bypass the water softener in an
emergency. In an emergency put the softener on bypass and
contact your installer.