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REHABILITATE CAUDELL HALL
BUILDING 18
STATE UNIVERSITY OF NEW YORK
BUFFALO STATE COLLEGE
SUCF PROJECT NO. 03421
3.03
3.04
DIVISION 23 – HVAC
GENERAL SYSTEM DESCRIPTION
A.
Provide normally open hot water coil valves.
B.
Provide normally open return air damper, normally closed relief air and normally closed
outside air dampers and operators.
C.
Mode of operation (occupied/unoccupied) including building warm-up and pull-down
cycles, as well as all system functions shall be programmable and controlled by the DDC
system.
D.
Shutdown of air handling units and fans due to a fire alarm shall be by Division 26. The
fire alarm system will send a signal to the DDC system for monitoring purposes only. The
DDC system will provide a staggered restart of the units once the alarm is cleared.
E.
All setpoints shall be adjustable.
WIRING
A.
Unless noted otherwise, all electrical wiring required to interconnect the components of
the control system shall be furnished and installed by the controls system installer.
Perform all wiring in accordance with the requirements listed below, code requirements
and Division 26.
B.
Communication wiring shall be installed using the particular system recommended,
plenum rated, jacket shielded cable. The communication network wiring shall be clearly
marked with a specific color code. Communication wiring shall not be installed near noise
producing equipment, such as ballasts, magnetic starters, etc. Communication wiring
shall comply with the optimum requirements necessary to assure communication integrity
and speed.
C.
All analog inputs and analog outputs shall be wired using 18 gauge stranded shielded
cable.
D.
All digital outputs shall be wired using 18 gauge stranded wire.
E.
All wiring in mechanical rooms, walls shall be installed in EMT conduit. Concealed
conduit and wiring is required in all finished spaces.
F.
Power Supplies:
G.
1.
Transformers – Each w/ low voltage fuse holder/disconnect.
2.
Actuators and relays shall use separate transformers from those powering
microprocessor control panels.
3.
Transformers shall be sized for a minimum of 150% of the connected load.
Convenience Outlet:
1.
110vac combination outlet w/ switch to kill 110vac to panel.
2.
Switched 110vac to panel is fused before transformers (after outlet).
TEMPERATURE CONTROLS
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