Instruction manual

K4, K6, K9 series chillers – Installation and Operation manual
Issue 10.33
Page 7
 Outside installation. The unit is compatible with outdoor installation, provided
that shelter from direct rainfall and sunlight is provided. It is strongly
recommended that Hexid A4 is used to provide baseline frost protection.
 Plumbing to be clean and compatible with the fluid to be used. It is advisable that
the minimum of right angle bends and compression fittings are used. See also
section 2.0
2.0 Installation
Having ensured that your installation meets all of the site requirements identified in
section 1.3, it is best practice that the fluid lines between your application and the chiller
have the following characteristics:
 Short
 Large diameter (ideally at least 12mm internal diameter)
 Free from right angle bends, to suppress water hammer
 Opaque, ideally black, to inhibit growth of algae. Alternatively, use solid copper
or welded ABS. Caution: Never use transparent tubing.
 Clean. If your installation is to existing pipe work, it is good practice to flush the
system with either a commercially available central heating cleaner or 5% acetic
acid solution. The system should be flushed clean with tap water to remove all
traces of cleaner prior to filling with Hexid.
All connections should be made using either the ATC ‘easy clamp’ or a jubilee type clip.
Where threaded or compression type fluid joints are to be made, always use a suitable
jointing compound such as PTFE tape.
Voltage selection
Caution: If your K series chiller is rated for multi-tap and dual frequency operation, it is
essential that the voltage selector switch on the K series chiller is set to match the voltage
and frequency available at your site. The voltage selector switch cover plate can be found
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