06-06
sections.
For roof mounted air handling units, fully weatherized,
penthouse configuration with modular sections shall be provided.
2. Each air handling unit shall be equipped with a return air fan and
an economizer capability of providing "free cooling" during mild
outdoor conditions.
3. The filters shall comprise of a 30% (ASHRAE Test) efficiency
prefilters and 85% to 90% (ASHRAE Test) efficiency afterfilters
banks.
The pre and after filters can be located back to back as
one section, in the same frame, on the upstream side of the supply
air fan.
4. Air distribution ductwork complete with ducts, air terminal units,
and supply air outlets shall be used to provide conditioned air to
the spaces.
Ducted return air connections shall be provided for
each air handling unit system serving bedrooms and associated
areas, such as, nursing station, examination room(s), corridor
etch.
The return air need not be ducted for the air handling
units serving non-residence areas, such as, offices, lounge etc.
An insulated "Z" duct shall be used to pick return air from rooms
where the partitions extend up to the under side of the structural
ceiling.
The exhaust air shall be ducted from each space to be
exhausted.
Transfer of supply, return, and exhaust air, from one
occupied area to another, is not permitted without ducted
connections.
Exception:
Toilets and janitor closets; see Section
2.
5. Perimeter Heating: Perimeter heat shall be provided for all
locations where winter outdoor design temperature is 9oF and
below.
If the building thermal envelope is not in compliance with
the limiting parameters outlined in Article 6, ENERGY
CONSERVATION, the perimeter heat shall be required for locations
where winter outdoor design temperature is 20oF and below.
Perimeter heating system shall also be used to maintain winter set
back temperature during unoccupied hours of nights and weekends.
The perimeter heating system shall be either in the form of
radiant ceiling panels or finned tube radiation. The radiant
ceiling panels are available either in modular panels or
continuous wall to wall linear design.
3.3 TERMINAL COOLING/HEATING SYSTEMS
The terminal cooling and heating systems shall be primarily used for
perimeter spaces only.
The terminal system shall use chilled water
from the existing central plant or a dedicated chiller selected to
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