
This Guide is subject to change without notice. REVISED AND PUBLISHED - 13 OCTOBER 2009 6
APPLICATION GUIDE
Models CW-H10, CW-H15
Indirect Evaporative Air Conditioner
SUPPLEMENTARY COOLING:
Climate Wizard can be used to boost or supplement the existing air conditioning capacity of a build-
ing. In this application the Climate Wizard will be installed in a similar way to the Stand Alone ap-
plication, but will be sized to provide added cooling capacity to the building. It can also be used to
supply all the fresh air requirement of a building and in this case it will be sized according to the
fresh air quantity requirement.
The Climate Wizard is intended to be installed external to any building, but may also be installed
indoors, for example in an air conditioning plant room provided that fresh outside air can be supplied
to the cooler and that the exhaust air is discharged directly to the exterior of the building.
The supply air temperature delivered by the Climate Wizard, and its airflow, is similar to the tempera-
ture and airflow of a refrigerated Air Conditioner. Therefore the air distribution design should follow
similar parameters of design and installation. Essentially that means similar duct sizes, similar
outlet design and attention given to the avoidance of cold air drafts. The use of Zones is acceptable
provided that used air can exit the building satisfactorily.
IT IS ESSENTIAL THAT THE PLANT BE SO ARRANGED THAT THE CLIMATE WIZARD EX-
HAUST AIR CANNOT BE RECIRCULATED INTO THE AIR INLET OF THE COOLER.
Sizing:
The decision to install supplementary cooling equipment will arise from a number of causes:
1. Existing plant is overloaded
2. Existing plant is nearing end of life
3. Energy consumption of building must be reduced but ‘Cold Front Cooling’ (see later heading)
option is either not possible or not economical
4. Building has been extended but existing plant is at full capacity
In addressing points 1,2,3 above, since the Climate Wizard delivers 100% fresh air and with no
added moisture, the fresh air intake of the existing Air Conditioning plant should be closed in order
for the Climate Wizard to provide all the fresh air required for the building. This will have the imme-
diate effect of reducing the load on the existing plant and saving energy. The decision about the
quantity of Climate Wizard coolers depends entirely on matching the Climate Wizard airflow with the
quantity of fresh air that was being delivered by the existing plant. The amount of energy that was
being consumed by the existing plant will be greatly decreased because the Climate Wizard can
cool the same quantity of fresh air for much less consumed energy. See table under Cold Front
Cooling. The maximum supply airflow of the 2 Climate Wizard models is:
CW-H10 approx. 800 L/sec at 80 Pa
CW-H15 approx. 1100 L/sec at 80 Pa