Ch. 16 - Building Automation Systems.csv Flashcards Preview

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Flashcards in Ch. 16 - Building Automation Systems.csv Deck (20):
2

BAS products are typically upgraded every

5 years
(16-3)

3

A _________ typcally manages the BAS; however, the ___________ manages voice & data.

-building or facilities manager
-telecommunications manager
(16-5)

4

Analog input example =

humidity & temperature sensors
(16-7)

5

Digital input example =

duct static pressure sensors
(16-7)

6

Lighting may account for up to _________ of the electrical operation costs in a building.

30-40%
(16-22)

7

Daylight harvesting provides savings of approx. _____.

4%
(16-23)

8

Lumen depreciation compensation strategy can produce energy savings averaging ________ per year over a _________.

-13%
-3 yr period
(16-24)

9

Radio frequency (EIB) =

868 MHz band
(16-34)

10

Voice & Data WA coverage area
BAS coverage area

one for every 100 sq. ft
one for every 250 sq. ft
(16-46)

11

BAS mechanical room =

every 50'
(16-47)

12

BAS cabling =

16-22 AWG
(16-49)

13

BAS and telecommuncations signals: Can_______ / Should not _________

Can share the same multipair backbone cable
Should not share the same binder group
(16-56)

14

LonWorks uses ______ layers of the OSI model.

7
(16-36)

15

The EIB (European Installation Bus) device network protocol does not define the _____ layer.

Session
(16-34)

16

One EMS program possible for integration into microprocessor-based controllers include Night Cycle which:

Maintains a low or high temperature limit during unoccupied periods by closing outside damper and cycling air handling unit.
(16-21)

17

One EMS program possible for integration into
microprocessor-based controllers include Night Purge which:

Uses cool, night outdoor air to pre-cool the building before mechanical cooling is turned on.
(16-21)

18

One EMS program possible for integration into
microprocessor-based controllers include Zero-Energy Band which:

Provides a dead band where neither hearing not cooling energy is used (e.g., space temp. floats between min. and max values)
(16-21)

19

LonWorks is used for distributed control networks consisting of intelligent devices connected together using one or more of the following media types:

Electrical power lines
Balanced twisted-pair
Optical fiber
Coax
Wireless
(16-35)

20

One EMS program possible for integration into
microprocessor-based controllers include Optimum Stop which:

Minimizes HVAC operating time by calculating how long stored energy can maintain occupancy temp. at the end of the day.
(16-21)

21

The connecting point for BAS services should be the:

TR
(16-5)