Adey CP1-03-04914 Installation And Servicing - Page 8

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5 .21 Wiring of connection unit:

WARNING: This appliance must be earthed.

The wires in the mains lead (supply cord) are coloured in accordance with the

following code:

Green and Yellow: Earth

Blue: Neutral

Brown: Live

As the colours of the wires in the mains lead of this appliance may not

correspond with the coloured markings identifying the terminals in your

connection unit proceed as follows:

The wire which is coloured green and yellow must be connected to the

terminal in the connection unit which is marked with the letter E or by the

earth symbol:

or coloured green or green and yellow .

The wire which is coloured blue must be connected to the terminal which

is marked with the letter N or coloured black .

The wire which is coloured brown must be connected to the terminal

which is marked with the letter L or coloured red .

5 .22 Boiler interlock safety function:

The APU Midi is fitted with a volt free contact specifically assigned for boiler/

chiller shut down in the event that the APU Midi detects system pressure

above the Hi alarm pressure or below the Lo alarm pressure .

The boiler interlock contact will be open circuit below the Lo alarm pressure

and above the Hi alarm pressure .

When the system pressure is in its normal operating pressure range (above Lo

alarm pressure and below Hi alarm pressure settings) the contact is

closed circuit

Always refer to the boiler/chiller manufacturer's instructions for correct

integration .

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5 .23 Alarm and boiler interlock connections:

Circuits connected to the relays are limited to 5 Amps, 230 V a.c.

maximum. The Installer MUST fit a 5 Amp fuse in the circuit to the

alarm relay to protect the APU Midi from damage.

For connection of output relays follow the steps and images below:

1) Remove the required green connector from the right hand side of the

control board .

2) Strip 6-8 mm insulation from the end of the connection wire (Max 1 .5 mm

CSA) .

Fig. 17

3) Insert wire into connector and screw down terminal screws to secure

(0 . 6 Nm max .) .

Fig. 18

Boiler Interlock

Common Alarm

High pressure alarm

Low pressure alarm

Fig. 15

Fig. 16

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