2. Complete ATC schematics including flow diagrams,
connection diagrams, wiring interlock diagrams,
setpoints, and sequences of operation. Indicate
control and operating ranges to clarify control
sequences. Indicate manual-off-auto local controls
on the locally mounted motor starters and in control
panel(s) for remote motor starters; wire all safety
controls to protect during both local manual and
auto operation. Indicate electric elementary
diagrams of motor starters, control device
actuators, and control sensors.
3. Location and types of automatic dampers,
including smoke dampers, e.g., opposed or parallel
blade.
4. Control valve nominal sizes, flow capacities,
inlet pressures, controlled fluid, maximum and
minimum pressure drops at the designed flow, and
calculated Cv. Select valves for smallest Cv within
available pressure constraints, pipe velocities,
economy of design, and noise criteria.
5.
Required controller parameters:
a. Throttling range, setpoint, and controller
action, direct or reverse.
b.
Differential for two-position controllers.
c. Specify the dead-band range for heating and
cooling applications and the cascade control range
or remote setpoint adjustment.
6.
Special controller parameters:
a. Fixed setpoint and fixed differential
controllers.
b.
Adjustable damping and damping rate.
c. Proportional-integral-derivative mode constant
settings.
7. Scale the range of temperature and pressure
indicators. Location of temperature wells and
pressure taps.
8.
Initial time switch settings for each zone.
9. Smoke detection systems and location of
key-operated override switches, when required, along
with the zoning arrangements for these systems.
10. Define which indicators and gages are mounted
on the panel face and which are located inside the
panel. Provide a complete layout of the panel faces
where a unique arrangement is necessary for
SECTION 15901N
Page 6
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