Mikrofill Maxi Single, Maxi Single (HP), Maxi Plus, Maxi Plus (HP) Technical Documentation Manual

I N S P I R E D E F F I C I E N C Y

MAXI & MAXI PLUS
Floor mounted
Pressure manager

TECHNICAL
DOCUMENTATION

Issue 06/14

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3Technical Data

1

1.1

1.2

1.3

1.4
2 Electrical connections 7

2.1 Electrical diagram 7
3 Keypad Function 8

4 Status Display

4.1 Pressure correct 8

4.2 Filling stopped due to low mains water pressure 8

4.3 Hours run facility 8

4.4 Hours run reset 8

5 Alarm conditions 9

5.1 Low Water Level Alarm 9

5.2 Optional System Failure/leak alert 9

5.3 High or low pressure alarms 9

5.4 Pump Failure 9

5.5 Frequent use alarm 10

5.6 Frequent use reset 10

Installation
Mains/boosted cold water supply
Connection to the system
Overflow Connection
Dimensions

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4
5
5
6

8

6 Fault diagnosis 11

7 Manual override 12

8 Audible alarm override 12

9 Service Mode ( adjusting settings ) 12

10 Menu functions 13

11 Maintenance 13

12 Pump Curve and Data 14

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Technical Data

Electrical Details

Supply Voltage

Full Load Current

Start Current

Fuse Rating

Max Load BMS Relays

Connection Details

W ater Inlet

Water Outlet

Maxi Single Maxi Plus

230 Volt

2.5 Amp

2.5 Amp

5 Amp

5 Amp

Maxi Single (HP) Maxi Plus (HP)

230 Volt

4.5 Amp

4.5 Amp

8 Amp

5 Amp

15mm Compression

15mm Compression

230 Volt

2.5 Amp

2.5 Amp

5 Amp

5 Amp

230 Volt

4.5 Amp

4.5 Amp

8 Amp

5 Amp

3/4” BSP

Max Coldfill Pressure Maxi 3.0 Bar / Maxi HP 6.0 Bar

Dimensions

Unit Weight

Height

Width

Depth

27 Kg

35 Kg 29 Kg 38 Kg

600mm

465mm

390mm

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Maxi & Maxi Plus pressurisation units

The Maxi range is a fully automatic heating / chiller system pressurisation device, and is suitable for the water
management in all domestic and commercialheating and cooling systems. It is supplied as a fully commissioned unit and
should require no "on site" commissioning.

1 Installation

All productsshould be installed by a competent person with regard to the relevant requirements of the Health and
Safety Regulations, Building Regulations, IEE Regulations, Water Supply (water
(Scotland) and any other local bye-laws or planning requirements.

Regulations, Water Bye-laws

The
crystal display to be easily read.

Maxi is intended for mounting: the unit should be situated in such a position as to enable the liquid

1.1 Mains/boosted cold water supply

The Maxi is designedto be connected directly to the mains cold water supply, or a boosted cold water supply, the
unit is supplied complete with all necessary isolating valves, but an inlet water isolating valve is recommended. The water
inlet is 15mm compression and should be connected to the mains cold water supply by 15mm copper tube or equivalent
approved plastic pipework. If the
to install a single check valve adjacent to the mains cold water supply.

To reduce the pressure drop on very long supply routes then 22mm supply pipework is recommended.

Maxi is sited some distancefrom the mains cold water supply it may be advisable

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1.2 Connection to the system

The Mikrofill Maxi is connected to the heating/chiller system by way of the 15mm outlet valve, the pipework from the unit
should be made in 15mm copper or similarly approved plastic pipework. A suitably sized expansion vessel should be
incorporated into the system at this point. Please refer to typical installation diagram on page 3. If you require any
assistance regarding vessel sizing please contact our technical sales department. The final connection into the
heating/chiller systemshould be sized accordingly, recommendations are shown below:

Vessel sizeupto100L 1/2" (15mm) expansion pipework.
Vessel sizeupto300L 3/4" (22mm) expansion pipework
Vessel sizeupto1000L 1" (28mm) expansion pipework.

For vessel sizes in excess of 1000L capacityplease contact our technical sales department.

IMPORTANT NOTE

The expansion vessel nitrogen/air charge must be set at the same pressure as the cold fill pressure of the system.* All
Mikrofill expansion vessels are factory commissioned to the correct pressure.

* When the installed height of the expansion vessel is different to that of the MAXI then please contact our service
department who will advise on the nitrogen/air charge.

1.3 Overflow connection

The Maxi is supplied with a 3/4" bsp plastic overflow (warning pipe) connection which should be led to a drain and be
visible at point of discharge, MIKROFILL SYSTEMS LTD cannot accept any responsibility for flood damage caused by failure
toconnect the overflow.

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