Salus MD22A Operation Manuals

DEFENDER

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Full Flow Magnetic Filter

Models: MD22A

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OPERATION MANUAL

In the SALUS MD22A box:

INTRODUCTION

Today, high eciency boilers oer excellent performance for heating systems,
however this performance can be eroded signicantly if little attention is
given to the cleanliness of the complete central heating system. Historically
the majority of systems suer from iron oxide contamination, which takes the
form of sludge deposits which are caused by corrosion of the heating system.

The iron oxide particles vary in size and the sub-micron particles are present
in the system uid continuously during system operation. The oxide particles
can cause premature failure of valves and pumps and boiler eciency is
reduced dramatically as the particles contaminate the boilers heat exchanger,
and the complete system pipework.

The SALUS Mag Defender oers system protection and increased eciency,
as it has been designed to remove the suspended iron oxide particles without
reducing ow rate through the system.

Installation is simple; isolation valves rotate 360º so a number of location
options can be facilitated.

An added advantage to installers is the bottom mounted valve for servicing.
Once isolated the bottom valve allows the easy discharge of contaminants.
The main body is 500mL, which allows the installer to add the correct amount
of corrosion inhibitor when the isolation valves are closed.

MD22A INSTRUCTION MANUAL2

QUICK REFERENCE GUIDE

How to install

110mm

154mm

How to service and clean

INSTALLATION

In order to achieve the best protection for the boiler, it is recommended
that the Mag Defender is tted after the last radiator before the boiler.

Header Tank

Boiler

RETURN

MD22A INSTRUCTION MANUAL 3

Vent

Pipe

Pump

Boiler

RETURN

In determining a suitable location for installation, it is important to ensure
you allow adequate access for servicing.

The following instructions are designed to assist engineers in the safe
and eective installation and servicing of the SALUS Mag Defender and
should be followed at all times. Any queries arising from either installation
or servicing, contact SALUS Controls direct on 01226 323961.

Dos:

• Install the ller upright to enable the device to be fully evacuated of
air during commissioning. Pipe runs are vertical, horizontal or any
angle in between. The inlet and outlet can also be swapped to suit.

• Where the device is tted to the metallic building structure earth­ bonding continuity is required around the device. All bonding
connections must be accessible and labelled “Safety Electrical
Connection - Do Not Remove”

Don’ts:

• Magnets may affect or interfere with sensitive mechanical and
electronic instruments such as heart pacemakers, computers/magnetic
media and watches. Always keep magnets at least 300mm (1ft) away
from such equipment.

• NEVER close the INLET or OUTLET isolation valves, or UNDO the lid when
the pump is running!

MD22A INSTRUCTION MANUAL4

Release system pressure then drain the pipe run where the device is to be
located (it may be necessary to drain the whole system). When installing
below a boiler or other object, allow 250mm clearance from the top of the
canister to beneath the object, to enable the lid assembly to be removed
when servicing.

The device has been designed to facilitate various inlet and outlet
congurations. Most congurations will require Elbows. For soldering we
recommend 28x Yorkshire Solder Ring Elbow YP1222mm (code08290), or
for compression we recommend 2 Yorkshire copper KS61522mm (code
61124K) and the tting instructions (which follow) are based around
dimensions of these elbows. For clarity the recommended solder and
compression ttings require the same dimension of cutout.

Vertical pipe run: Measure and mark a 110mm section for a 22mm unit,
as shown below. Remove this marked section using a pipe cutter as
shown. Now create 64mm and 106mm of 22mm copper pipe to attach
between the respective elbow and compression tting on the inlet/
outlet. Tip: Reuse the cut out section.

Horizontal pipe runs: Measure and mark 73mm section and remove
the marked section with a rotary tube cutter. Create 64mm and 134mm
lengths of 22mm copper pip to attach between the respective elbow and
compression tting on the inlet/outlet. Tip: Reuse the cut out section.

Prepare the pipe and ttings, lubricate the olives and connect the

1

valves on the pipe work, only hand tighten the connections at rst.

MD22A INSTRUCTION MANUAL 5

2

Now Loosen off the valve flange
nuts and insert the rubber washers
provided. (There are 2 supplied with
this product).

3

Fit the drain valve assembly to the
bottom of the Mag Defender making
sure the outlet is at the front of the
assembly and being careful not to
overtighten as this may cause damage.

4

Loosely secure the Mag Defender to
the valves.

MD22A INSTRUCTION MANUAL6

5

Grip the Mag Defender and tighten
the compression ttings being careful
not to over tighten as this may cause
damage.

6

Now the heating system is ready to be
lled, ensure the inlet and outlet valves
are both in the open position, with the
drain valve in the closed position, and

NOTE: Drain valve closed

then run the central heating system.

7

Bleed through top air vent, bleed the
MD22A again after the system has
reached temperature. Take care as the
water may be hot.

Always service (see page 8) the lter
before leaving the premises. The
Mag Defender spanner can be left

MD22A INSTRUCTION MANUAL 7

with the customer.

SERVICING

Important – Before carrying

1

out any servicing work, turn off
electrical supply to the boiler and
let the water cool down to a safe
working temperature. Using the
Mag Defender spanner provided
turn both isolation valves to the
OFF position.

2

Remove magnet and put in a safe
place.

MD22A INSTRUCTION MANUAL8

After approximately 30 seconds,

3

remove drain valve cap and use to
open drain valve. Have bucket or pipe
connection ready to collect debris.

4

Open inlet to ush out debris.

MD22A INSTRUCTION MANUAL 9

Once all debris has been ushed

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re-insert the magnet.

Close drain valve using drain cap,

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ensure the cap is alligned correctly so

the valve is fully closed.

Open outlet.

7

Replace cap on drain valve and run

8

the central heating system. Bleed air

through air vent if required.

MD22A INSTRUCTION MANUAL10

CHEMICAL DOSING

1

After step 4 in servicing, close inlet
valve.

Close drain valve using drain cap,

2

ensure the cap is alligned correctly so

the valve is fully closed.

MD22A INSTRUCTION MANUAL 11

Replace cap on drain valve.

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4

Using the MAG Defender spanner
provided, carefully unscrew the lid.

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Remove magnet cover and rinse under
tap if required.

Pour a bottle of water treatment

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corrosion and scale inhibitor, we
suggest SALUS Inhibitor. The canister
will hold 500ml.

MD22A INSTRUCTION MANUAL12

Re-insert magnet cover.

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8

Now replace the lid onto the canister
and tighten with the Mag Defender
spanner. (Do not over tighten).

MD22A INSTRUCTION MANUAL 13

Re-insert magnet.

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Open the isolation valves and start the

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heating system.

11

Bleed through top air vent, bleed the
MD22A again after the system has
reached temperature. Take care as the

water will be hot.

Always service the filter before
leaving the premises. The Mag
Defender spanner can be left with
the customer.

MD22A INSTRUCTION MANUAL14

IMPORTANT

Ensure that the Standard Electrical Best Practice guidelines are followed
when installing Mag Defender. A copy of these guidelines can be found
at www.hse.gov.uk/electricity.

The inlet and outlet on the Mag Defender are reversible and there is no
ow restriction.

Following installation, don’t forget to complete the warranty card.
Alternatively, complete the registration online at www.salus-tech.com.

Faulty components must be returned under the SALUS warranty process.

NOTES

MD22A INSTRUCTION MANUAL 15

QUESTIONS AND ANSWERS

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Where can I t the Mag Defender?

In order to achieve the best protection for the boiler, it is
recommended that the Mag Defender is tted between the last
radiator and the boiler (see diagram on Page 3).

Which connection on the Mag Defender is the ow and which
is the return?

The inlet and outlet on Mag Defender are reversible and there is
no ow restriction.

How often do I service the Mag Defender?

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Servicing is required once a year with the annual boiler service.

Can I use chemicals with the Mag Defender?

Yes, you can use any chemical on the
market with Mag Defender, however
we recommend you use
SALUS LX products with
the Mag Defender.

MD22A INSTRUCTION MANUAL16

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How long will the Mag Defender last?

Mag Defender has been developed to last for the lifetime of the
boiler, normally ten years. It provides continuous protection and
comes with a ve year warranty.

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How do I isolate the valves?

Simply turn the valves to the marked OFF position using the
spanner provided. Important: Remember to switch off the
electrical supply to the boiler when servicing the Mag Defender.

Will the Mag Defender aect my pacemaker?

As with all magnetic products, if you have a pacemaker caution
should be taken when handling the Mag Defender at all times.
When the Mag Defender is installed, the magnetic eld outside
the canister is approximately one tenth of an average fridge
magnet.

MD22A INSTRUCTION MANUAL 17

For more products in the
SALUS range visit...

www.salus-tech.com

MD22A INSTRUCTION MANUAL 19

WARRANTY

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SALUS Controls warrants that this product
will be free from any defect in materials or
workmanship, and shall perform in accordance
with its specication, for a period of ve years
from the date of installation. SALUS Controls sole
liability for breach of this warranty will be (at its
option) to repair or replace the defective product.

Customer Name: ......................................................................................

......

Customer Address: .................................................................................

.......

..........................................................................................................................

......................................................... Post Code: ........................................

.....

Tel No: ............................... Email: ............................................................

......

Engineers Company: ..............................................................................

.....

Tel No: ............................... Email: ............................................................

MD22A INSTRUCTION MANUAL18

For more products in the
SALUS range visit...

www.salus-tech.com

MD22A INSTRUCTION MANUAL 19

MD22A INSTRUCTION MANUAL 19

Specication and contents

Nylon Compression Cap

Hydrolysis resistant Nylon Lid
assembly with EPDM “O” ring

500ml hydrolysis resistant circulation chamber

Neodymium magnet
assembly, hermetically
sealed in SSTL304

22mm compression Inlet

½” BSP drain valve

and outlet 360 swivel
isolation valve (x2)

Also Supplied:

Mag Defender Spanner

Instruction manual including warranty form

www.salus-tech.com

Sales:

Email: [e-mail] Tel: [phone]

Technical:

SALUS Controls plc, SALUS House, Dodworth Business Park South,

SALUS DOC No. 00004 VER020

Email: [e-mail] Tel: [phone]

Whinby Road, Dodworth, Barnsley S75 3SP