Carrier ZONE-MIZER 50ME User Manual
Page 35
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MODULE PRESSURE DROP
#
NOTE: Greatest module pressure drop represents entire coil pres
sure drop.
velocity, the friction loss per 100 ft increases significantly.
Also, seam and joint leakage in a small duct of long length
can prevent delivery of required cfm at the outlet grille. If
long runs with low cfm are inevitable, oversize the ducts
to give lower velocities, lower friction rates and reduced
leakage rates.
Diversity
The size, shape and orientation of the building, as well as
the application and location of zones, influence the degree
of diversity applied to a multizone system.
Since the normal application of multizone units involves
zones where loads are shifting due to solar energy, people,
equipment and lights, diversity will exist.
The Carrier modular multizones will be affected by
building diversity only on refrigeration system operation.
When a particular zone (or zones) thermostats are satis
fied, a solenoid shuts off the zone evaporator coil. This
enables more refrigerant to flow to other operating zone
coils, creating a larger capacity for that zone. However,
the diversity will lower the selected unit total capacities.
The 48MA/50ME ratings do not reflect diversity but can
be converted to diversity ratings by using the capacity
FIELD-FABRICATED ZONE DUCT PLENUM DETAIL