Ch. 16 (Building Automation Systems) Flashcards
V/D Cabling is not usually ___
Part of construction budget
BAS Technologies are usually upgraded every ___ to ___ years
5 to 7
Total integrated systems approach can save on cabling by ___ %
25% - 40% savings
Who typically manages the BAS
Facilities manager
BAS analog inputs
Humidity & temperature
BAS digital inputs
Static pressure sensors.
Daylight harvesting saves approximately
4%
Lumen depreciation compensation
3 years, 70%
BACnet is an ___ standard
ANSI
EIB
European Installation Bus
EIB frequency
868 MHz
Voice and data work area
100 sq’
BAS device area
250 sq’
BAS recommended coverage area for a mechanical room
50 sq’
HCP
Horizontal connection point
HCP should be located at least ___ from the TR
49’
A traditional BAS solution uses what size twisted-pair?
16 - 22 AWG
Open office operational cost savings
25 - 40%
BAS backbone cabling
Can share multipair backbone cable
Should not share same binder groups within multipair cable
BAS ___ interface with control equipment directly through cable sensors
System level controllers
Night cycle
Maintains temperature limit during unoccupied periods by closing outside damper and cycling air handling unit
Lumen depreciation compensation strategy energy savings over three year period
13%
BAS connecting point
TR
BAS coverage area connections are reconfigured at the ___
HCP
Heat content
Selects air source, a combination of return and outdoor air requiring the least total heat removal for cooling
Commercial building lighting budget
30 to 40% of total electrical costs
Optimum stop
Minimizes HVAC operating time by calculating how long stored energy can maintain occupancy temperature at end of day
Energy management is an integral part of the ___ system
HVAC
BAS should consider:
Security & Access Control (CCTV)
HVAC
EMS (Energy Management System)
