Ch. 16 (Building Automation Systems) Flashcards Preview

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Flashcards in Ch. 16 (Building Automation Systems) Deck (29)
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0
Q

V/D Cabling is not usually ___

A

Part of construction budget

1
Q

BAS should consider:

A

Security & Access Control (CCTV)
HVAC
EMS (Energy Management System)

2
Q

BAS Technologies are usually upgraded every ___ to ___ years

A

5 to 7

3
Q

Total integrated systems approach can save on cabling by ___ %

A

25% - 40% savings

4
Q

Who typically manages the BAS

A

Facilities manager

5
Q

BAS analog inputs

A

Humidity & temperature

6
Q

BAS digital inputs

A

Static pressure sensors.

7
Q

Daylight harvesting saves approximately

A

4%

8
Q

Lumen depreciation compensation

A

3 years, 70%

9
Q

BACnet is an ___ standard

A

ANSI

10
Q

EIB

A

European Installation Bus

11
Q

EIB frequency

A

868 MHz

12
Q

Voice and data work area

A

100 sq’

13
Q

BAS device area

A

250 sq’

14
Q

BAS recommended coverage area for a mechanical room

A

50 sq’

15
Q

HCP

A

Horizontal connection point

16
Q

HCP should be located at least ___ from the TR

A

49’

17
Q

A traditional BAS solution uses what size twisted-pair?

A

16 - 22 AWG

18
Q

Open office operational cost savings

A

25 - 40%

19
Q

BAS backbone cabling

A

Can share multipair backbone cable

Should not share same binder groups within multipair cable

20
Q

BAS ___ interface with control equipment directly through cable sensors

A

System level controllers

21
Q

Night cycle

A

Maintains temperature limit during unoccupied periods by closing outside damper and cycling air handling unit

22
Q

Lumen depreciation compensation strategy energy savings over three year period

A

13%

23
Q

BAS connecting point

A

TR

24
Q

BAS coverage area connections are reconfigured at the ___

A

HCP

25
Q

Heat content

A

Selects air source, a combination of return and outdoor air requiring the least total heat removal for cooling

26
Q

Commercial building lighting budget

A

30 to 40% of total electrical costs

27
Q

Optimum stop

A

Minimizes HVAC operating time by calculating how long stored energy can maintain occupancy temperature at end of day

28
Q

Energy management is an integral part of the ___ system

A

HVAC