2
www.waterloo.co.uk
Tel: +44 (0) 1622 711500
Operating and maintenance instructions
ABM Active Chilled Beams
Installation
General Information
Foreword
These instructions
are given as a guide to good
practice in the installation, start-up, operation, and
maintenance by the user, of Waterloo ABM 300 Active
Chilled Beams.
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Units arrive on site with an unit model size, coil type,
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heater, unit handing pictograms, which clearly
indicates important information such as the customer
order number, job name, unit model size, coil type,
unit handling etc.
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To maintain unit performances, ensure that the air
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Table 1).
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Coils
At installation and then yearly, the manufacturer
recommends having water analyzed for bacteria
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2
S and
reducing sulfates) and also a chemical analysis, to
avoid corrosion and scaling. The water circuit must
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intermediate exchangers, purges, vents, isolating
valves, etc, depending on the results of these analyses.
The results of the analyses must correspond to values
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Table 2).
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As with all types of ATD, the duct inlet conditions are
very important to the correct function and operation of
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should always be followed.
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duct entry conditions can result in:
Poor velocity distribution
Excessive turbulence
Unpredictable throw
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Table 1- Air Quality Recommendations
Table 2- Water Quality Recommendations
Air Quality Recommendations
SO
2
<0.02 ppm
+
2
S <0.02
ppm
NO <1.00
ppm
NO
2
<1.00
ppm
1+
3
<6.00
ppm
N
2
O <0.25
ppm
Water Quality Recommendations
Total hardness in
French degrees
7+
Chloride [C L-]
< 10 mg/l
Sulfate [SO42-]
< 30 mg/l
Nitrate [NO
3
-]
= 0 mg/l
Dissolved iron
< 0.5 mg/l
Dissolved oxygen
4 < [O
2
] < 9 mg/l
Carbon dioxide [CO
2
]
< 30 mg/l
Resistance
2000<Resistance<5000 cm
S+
S+
