ClimaCool IOM AR2 SERIES - Manual (Page 41)

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THE CLIMACOOL MODULAR CHILLER
APPLICATION PARAMETERS
Water Flow Rates
It is imperative that minimum and maximum water flow rates
are not exceeded . Minimum and maximum water flow rates are
defined in the Physical Data tables of this manual . A flow switch
or differential pressure switch is required to confirm flow This
device is supplied by others during initial installation .
Chilled Water Temperature Limits
ClimaCool air-cooled remote modules are designed for a leaving
chilled water temperature range from 42°F to 59°F . All cataloged
modules can operate safely in this range without the need of
special controls or glycol additives . Leaving water temperatures
below 42°F can result in evaporator suction temperatures below
the freezing point of water . Therefore, we recommend a glycol
solution additive that will protect the evaporator from freeze ups
at lower operating suction temperatures .
Water Quality Parameters
Proper care should he given to maintaining a clean system .
Foreign matter such as scale, dirt and corrosion material can
severely affect system performance . Such matter may also cause
blockage which increases water pressure drop and reduces
water flow Due to the regional differences of water conditions,
ClimaCool recommends that a local water treatment specialist
be contacted to determine a proper water treatment program .
ClimaCool does not recommend the use of salt or brackish water
in chilled water systems . Both have a detrimental effect on the
life of system components . ClimaCool modules use a .0001
(ft2-hr oF/Btu) fouling factor for the evaporator in determining
performance ratings . See page 15 for Water Treatment guidelines .
Water Piping Practices
As with any water system, it is important that the system be
clean . If care is taken during installation, the possibility of dirt
related problems are avoided in future operation of the chiller .
The pipe work installer must remove weld scale- rust and
contamination during pipe work fabrication . There are certain
necessary components that should always be installed in the
chilled water loop . (see Water Piping Configurations on page
11 in this manual) Isolation valves are required in the position
shown to isolate the chiller for maintenance . It is also desirable
and a good practice to have valves isolating the pumps .
Refer to the ClimaCool modular chiller water piping
configurations (Figs. I and 2 on page 11) for piping
configurations on multiple modules. Before final piping
connections are made to the chiller, all external water piping
must be thoroughly flushed. Sufficient insulation should be
installed and sealed to prevent condensation and reduce heat
gain. Chilled water volume can be accommodated with the
use of expansion tanks.
Remote Condenser Location
It is vital to select a suitable location for your remote air cooled
condenser in order to allow sufficient air flow into the cavity of
the condenser It is important not to place the condenser into a
“pit”, unless the pit is not any deeper than the condenser height
plus 10 feet, and there is at least a clearance of 2 times the width
of the unit on both sides in between the condenser and the pit
walls . The unit must also be level in relation to the pit opening .
AIR FLOW
1”
Min.
W”
Min.
W”
Min.
Multiple units can be placed next to each other, side by side, as
long as there is at least one width distance between them, that
being the width of the largest unit .
Condensers can be located near fences, as long as there is approx .
50% free area in the fence and the unit is no closer than one
width distance from the fence .
Application Parameters