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