Hose Recommendations - ATC A01 Installation, Operation & Service Manual

Applied Thermal Control Ltd
39 Hayhill Industrial Estate
Barrow-upon-Soar, Loughborough
LE12 8LD, United Kingdom
+44 (0) 1530 839 998
Service@thermalexchange.co.uk
Support@app-therm.com
Date 11/MAR/2022
INSTALLATION FOR AIR-COOLED UNITS WITH PUSHFIT OR QUICK-RELEASE ADAPTERS
This guide applies to the following product groups;
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M-Series refrigerated units, in the MA485 chassis, with or without an SA00016 options pack.
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A-Series airblast units, in the MA485 chassis, with or without an SA00016 options pack.
Having ensured that your installation meets all site requirements, it is best practice that the fluid lines between
your application and the chiller have the following characteristics.
Short in length – this reduces friction-based pressure drop and addition ambient heat load.
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Large diameter bore – at least 12mm (1/2").
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Free from 90° bends – to limit the effects of water hammer. If this cannot be avoided, sharp changes of
3 direction should be minimized so far as possible. Doing this correctly can yield higher pump performance
and extend time between maintenance intervals. It will also reduce electrical energy consumption.
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
4 clean with tap water to remove all traces of cleaner prior to filling the system. Failing this, it is recommended
to use a domestic bleach in solution with tap water, diluted to the point where the bleach can longer be
smelled by human nose.
Opaque, ideally black – to inhibit light passing through the tube and algae building up. Alternatively, solid
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ABS or copper pipe can be used where application chemistry allows.
Insulation, where low temperature process is planned – the process line from chiller to application
contains the feed of low temperature fluid. Insulation prevents heat from entering this line and can promote
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better stability. Uninsulated return lines are helpful where free cooling can be obtained by allowing heat to
transfer to air – likewise, insulating the return line is helpful if the fluid temperature is below ambient.
Caution; Never use transparent tubing. UV light will pass through, prompting growth of organic
contamination.
Standard units are supplied with 12mm pushfit female connections. These fittings are not valved and will
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'drop' the volume of the system if left open to atmosphere.
Ensure the tube selected to connect to the product has been cut square to the centerline of the tube.
Cutting at an angle increases the chances that only a partial seal will be achieved. Pushfit fittings can
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sometimes feel as though they're pushed fully-home into the connector, but only be halfway in – ensure the
tube is pressed in.
Pushfit connectors supplied are natively 12mm – while you may be able to find 1/2" tube and operate
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successfully, other metric to imperial conversions are more difficult. Try to source metric tube.
Tube selected must be relatively stiff. Polyurethane and Nylon are good choices. Silicon can often be too
4 soft and alignment/support is critical for harder materials like copper. If using Polyurethane tube, ensure you
have selected ether-based. Ester-based is not suitable for water.
Ensure that the system is correctly connected. The labels at the ports are clearly marked with ISO7000
5 standard inlet and outlet symbols. Ports marked as outlet means fluid leaves the product and must be
connected to the process inlet. Check all joints are tight and leak free.
If your product has the optional SA00016 pack applied, you will have a valved connection. Disconnecting
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the fittings will retain system volume in the chiller and in the connected tube/hose.
Where this product is incorporated into other equipment, it is the responsibility of the assembler to ensure
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safety.
Annex C-1 220311 Installation - Generic air-cooled with Pushfit or CPC adapters
Author(s) MJH
Operating Manual; Installation
Annex C-1
Page 1 / 2
CONNECTING ADPATERS TO PRODUCT
DOCUMENT DETAILS
Revision 2

HOSE RECOMMENDATIONS

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