| 1. | Control systems for heating, ventilation and
air-conditioning shall include provisions for fully automatic direct digital control by the Energy
Management System (EMS). All controllers that activate pneumatic or electrically driven devices
shall be as specified by or provided by EMS and shall be included in the Contract Documents. EMS
devices shall include, but not be limited to: motor starter and speed controls, temperature sensors,
start-stop stations, steam flow and condensate meters, status indicators, PE or EP switches and
transducers. Closely coordinate the control design work with the Utilities and Conservation Unit,
Physical Plant (PP). |
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| 2. | Show control diagrams on the drawings. Use selected
manufacturer's catalog numbers (Barrington is the standard). Include final sequence of operation in
the operation and maintenance manual submittal. |
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| 3. | Show any humidity control by means of a skeleton
psychometric chart on the drawings. |
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| 4. | Show a graphic chart on the drawings where control
sequences are difficult to describe or specify. Indicate the position of valves, dampers, etc., or
temperatures under variations in controlled or controlling conditions. |
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| 5. | Indicate all design temperature and pressure settings on
control diagrams. The contractor shall initially set controls at these temperatures and pressures
and then make any changes required to meet the actual operating conditions. Record all deviations
from design settings on the project record drawings. |
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| 6. | Individual room heating and ventilating controls may be
conventional pneumatic, or direct digital control via the EMS as determined by the building
program . |
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| 7. | Divide large open areas into separate zones for each
exposure. |
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| 8. | Where a number of rooms with similar exposures or heat
gains are included in a single zone or where it may not be practical to install individual room
controls, locate the zone thermostat in a common return or exhaust duct from the zone. |
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| 9. | At animal rooms and similar hose down spaces, provide
bulb-type, completely waterproof thermostats that can be hosed with high-temperature water or utilize
an echaust duct sensor. |
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| 10. | Provide thermometers near each controlled point for
setting of the control and checking its operations except at room thermostats. |
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| 11. | Provide pressure gauges in main and branch air lines at
each major pneumatic control device including EMS electric/pneumatic transducers. |
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| 12. | Provide non-electric automatic modulating valves where
single or double occupancy rooms are heated by under-window convectors. Provide pneumatic or EMS
control for larger areas. Provide shutoff valves to isolate each convector. |
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| 13. | Specify normally-closed-type heating control valves
for any area, such as animal, insect or plant rooms, to prevent overheating in case of air or control
failure. Discuss questionable areas with Capital Projects (CP). |
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| 14. | See Division 1 for other specification
requirements. |
