Adey Mini 130 Installatie en onderhoud - Pagina 9

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4)
Re-insert connector into the correct location on the control board and route
the cable to the back of the APU Mini and secure with a cable tie to the
retainer .
5 .24 Fuses: The following fuse size should be used:
Model
Fuse Size (AMPS)
All models
5 .25 Supply cord replacement:
The supply cord and internal wiring within the terminal box are routed
and secured to ensure compliance with the electrical standard EN 60335-
1. It is essential that prior to any disturbance of this internal wiring, all
cable routing and securing details are carefully noted to ensure re-
assembly to the same factory pattern is always maintained.
If the supply cord is to be changed or is damaged, it must be replaced
with a special cord assembly available from ADEY or one of their approved
repairers . On disassembly note the cord retention and routing system .
Re-assemble to the same pattern . For information on cable connection
consult the wiring diagram .
Cable tie
Retainer
Fig . 17
5
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6 COMMISSIONING

6 .11 Pre-commissioning checklist:
Before starting the commissioning process the following conditions must be
met . If these conditions are not adhered to, damage to the equipment,
system and property may result .
Ensure the unit is sited in a frost free area, away from precipitation and
z
water sprays/jets .
All necessary pipe/electrical connections should have been made to a
z
satisfactory standard by a qualified person .
The temperature and pressure at the point of connection are within the
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operating limits of the pressurisation unit .
The heating/cooling system is fitted with a safety valve and expansion
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vessel sized appropriately .
6 .12 In order for the pressurisation unit and heating/cooling system to function
correctly the following conditions must be met . If these conditions have not
been met, the commissioning process should not continue .
Ensure the system connection has been made into the heating/chiller
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system return header .
Ensure Non-return valves, pressure reducing valves or RPZ valves are NOT
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installed between the pressurisation unit and the heating/cooling system .
The expansion vessel is pre-charged to the correct pressure (equal to
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initial system design pressure) .
6 .13 Prior to commissioning, fill the heating/cooling system via a filling loop . The
APU Mini is NOT designed to fill the system from empty, it is only intended to
top up the system after occasional water leakage .
Ensure the heating/cooling system is filled and pressurised to the required
z
cold fill pressure, with the water at approximately ambient temperature .
Ensure the system is dosed with a suitable corrosion inhibitor . Note the
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APU Mini is not designed for dosing chemicals into the system, this must
be done via other means .
6 .14 Expansion vessel setting:
To set or check the expansion vessel charge pressure the lock-shield
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valve between the APU Mini and the vessel must be closed and the
vessel drained using the drain valve .
A suitable gauge should be used to check the charge pressure .
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If the charge pressure is too high it can be reduced by releasing air from
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the vessel pre-charge valve or by using a pressure gauge with an integral
air release valve .
If the charge pressure is too low a small increase can be provided using a
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car foot pump otherwise an oil free compressor or nitrogen bottle is
recommended .
When the correct pressure is set the Schrader valve protective cap must
z
be replaced .
Check the integrity of the pipe-work . Ensure the lock-shield valve
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between the system and the expansion vessel is open and the drain
valve is closed .
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