Daikin DPSA, Manual

Page: 9 / 42

Cabinet Construction
www.DaikinApplied.com 9 CAT 258 • REBEL APPLIED ROOFTOP
A word on air leakage: Air leakage represents a substantial
operating cost for equipment operators. Leakage occurs in
rooftop equipment in the form of infiltration, negative sections
drawing air in, and exfiltration, positive sections leaking air
out. Both forms of leakage waste energy. Excessive infiltration
results in unconditioned and unfiltered air being supplied to
the building. Excessive exfiltration is when air that has already
been invested in for filtration and conditioning is lost and not
supplied to the building. In both cases, additional conditioning
above the building loads is required meaning additional
operating load and additional operating expense. Figure 6
shows the average annual operating cost to building operators
due to thermal losses and air leakage by city. Leakage costs
an average of $600 per year in additional operating expenses
and more in high load climates.
Rebel Applied’s low leakage thermally broken casing saves
building operators 90% of the thermal and air leakage costs
( Figure 7 ).
Figure 6: Average Annual Operating Costs of Thermal
Losses and Leakage
Figure 7: Rebel Applied Low Leakage Casing Savings
Serviceability and Access
• Access doors are provided on all critical maintenance
sections to provide easy access to components
• A single, lockable handle and latch mechanism plus door
holders on each access door
Figure 8: Door Levers