T9901018-1
Page 10 of 26
Install the expansion vessel, pressure relief valve, filling loop, pressure gauge, automatic
air vents, water dirt trap device, flow setter valve, drain valve(s), isolating valves and union
fittings for the removal of components. Installation pipework should be supported
independently from the cooling unit. The fitting of test points, e.g. binder, should be
considered for measuring pressures and temperatures. See Section ‘Design Information’
Page 3 and 4 for selection information on water pumps and flow setter valve.
The chilled water system needs to be cleaned using a suitable cleaning agent to ensure
that any flux residues/installation debris is removed (see BSRIA AG 1/2001.1). Fill the
chilled water system with water, vent air from the water system and thoroughly check the
whole system for water leaks. Once the system is ready add inhibitor to the correct
concentration. If necessary, the system should be protected against freezing and anti-
freeze should be added to the correct concentration.
NB. output may be reduced if antifreeze additives are used.
Fully insulate the chilled water system to prevent energy loss and to avoid condensation
dripping from chilled surfaces. External pipework, if used, must be weather-wrapped or
installed in suitable trunking.
Condensate Disposal System
(Right hand side of unit)
As explained in Section ‘Design Information’ Page 3, the dry cooling unit is supplied with
an integral condensate drain tray and outlet pipe to drain condensate away from the unit in
an emergency condensate situation.
Remove the right hand plastic end cap by pulling off and connect a gravity condensate
drain pipe system to the 15mm copper drain pipe that protrudes from the right-hand rear of
the cooling unit. Extend this to a suitable drain or condensate pump (if required) outside of
the room that the dry cooling unit serves. Condensate pumps are not recommended but if
a gravity drain system is impossible and a condensate pump is the only alternative it must
not be fitted at the dry cooling unit because of reliability issues with these devices. If the
condensate needs to be pumped to a higher level with a condensate pump this should be
done in a separate room away from the server room. If there was a spillage of condensate
at the pump, therefore, it will not occur in the server room.
Make sure condensate pipework can be unclipped for when the drain tray needs to be
inspected and cleaned, see Page 22.
If using wall brackets use copper
elbow to extend drain pipe downwards
If using hanging rods and there is
space to the rear the drain pipe can
extend backwards