Adey Mini 230 Installation et entretien - Page 5

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3 KEY FEATURES

3 .11 The APU Mini comprises of the following main components:-

1 . Moulded tank – Main body of the APU, comprising of an integrated water

tank with warning pipe and weir overflow and mounting the solenoid

piston pumps, manifold and controller .

2 . Pump assembly – One or two piston pump units mounted into the

moulded tank with vibration isolating rubber mounts .

3 . Outlet manifold – Brass manifold with pressure transducer used to monitor

system pressure and connection to the pump(s)

4 . Programmable controller – Intuitive, user set controller, allowing system set up

and easy alarm connection .

5 . Wall mounting plate – Robust stainless steel wall mounting plate allowing

quick, easy installation and removal if needed .

6 . Moulded cover – Moulded acrylic capped ABS cover retained to the

moulded tanks with Dual Lock

access .

3 .12 Principle of operation: The pressurisation unit consists of a break tank and

one or two piston pumps . The break tank is supplied with mains water from

the left to a float valve and includes an overflow and weir to maintain an AB air

gap in the tank . The unit is connected to the heating/chiller system

via a flexible hose which can exit the unit on either the left or right . The

pumps are connected via a flexible hose to the tank via a rubber connector .

A pressure transducer monitors system pressure and if a reduction in system

pressure is detected, the controller runs the pumps until the system is re-

pressurised to the required pre-set level . If the unit only has a single pump

connected it will run on a 30 minutes on/30 minutes off basis until this level

is reached, if the unit is a twin pump model the pumps run in duty standby

mode (the controller will alternate which pump starts first to even the

wear on the pumps) . The manifold is fitted with a non-return valve to ensure

system pressure is maintained once pressurised .

fastening system for quick and easy

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4 INSTALLATION

4 .11 Fill valve flow restrictor guidelines: Ensure side entry fill valve is fitted

with the correct filter and flow restrictor combination (dependant on the

mains water pressure) into the G ½ threaded tail as outlined below:

Coloured insert - To be used for water pressure between 1 and 4 bar

White insert - The APU Mini is pre fitted with the white high pressure insert .

Change if the unit is slow to fill or the water pressure is low (below 4 bar) .

Fig . 4

4 .12 Cold mains feed connection: The connection to the cold water mains inlet is

made using a suitable fitting to the G ½ male thread on the left hand side of

the APU Mini . When tightening ensure the fill valve within the tank is not

rotated . If the valve is rotated it may not function correctly with the risk

of flooding . (Do not overtighten) .

4 .13 Wall plate fixing:

1 . When installing the APU Mini on a wall ensure suitable fixings for the wall

structure are used and are suitable to support the unit when fully filled with

water (see technical section for filled weights) . The holes in the wall plate are

6 mm in diameter, the maximum permissible screw head height is 3 mm .

2 . All holes in the wall mounting plate must have fixings used in them as per

the image below, do not leave out fastenings as this will compromise the

integrity of the wall plate .

Fig . 3

3 . Ensure you have sufficent room around the area you are mounting the APU

Mini to allow installation, servicing and operation . See section 2 .12 .

4 . Ensure wall plate is fixed to a flat vertical wall and the top of the plate is

horizontal .

Fig . 5

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