H.V.A.C
4-3.7 DESIGN ALTERNATIVES
4 - 3 . 7 . 1 Heating and Cooling: The following systems may
p r o v i d e h e a t i n g o n l y , c o o l i n g only, or both heating and cooling.
4 - 3 . 7 . 2 Central System Packaged Unit:
Central system generally implies
a single, central heating and cooling equipment location, which distributes
h e a t i n g water and chilled water to one or more air handling units. One
c e n t r a l air handling unit may serve an entire buiIding, or any major
fraction thereof, i.e., one system per floor, etc. A packaged unit
i n c l u d e s , as a manufactured assembly, heating, cooling, and air handling
equipment.
Such a unit may serve any fraction of a building.
4 - 3 . 7 . 3 Mixed Systems:
A building may be served by one or more types of
s y s t e m s types, i.e., the perimeter of a buiIding may be served by a fan
c o i I o r i n d u c t i o n u n i t s y s t e m , w h i l e the interior of the building may be
s e r v e d by an all-air type system.
4-3.7.4 Controls:
Pneumatic,
electric
and/or
electronic.
4-3.7.5
Heating
and
Reheat
Coils:
Steam,
heating
water
or
electric.
4-3.7.6
Air
Outlets
(diffusers,
registers,
grilles,
etc.)
A.
Configuration:
Square,
round,
rectangular
or
linear.
B.
Type:
Adjustable or fixed louvers, blades, perforated
plates, or slots.
Location:
C.
Ceiling, wall,
floor,
ceiling
T-bar,
or
air
handling
light troffer.
4-3.7.7
Supplementary
Heating
Units
Energy
Source:
Steam,
heating
water,
or
electric.
A.
B.
Type:
Convection, radiation, or combination.
C.
Location:
Floor,
ceiling
or
wall.
4-8
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