ECS ECU

Question 1

ECU

Answer 1

Environmental control unit

Question 2

Where can you find the ECU components

Answer 2

IADs
ECS
ECS OP
Equip and Descri
Table 7

Question 3

Heater

Answer 3

Reference designator: 1A2
Location: In front of Bay 1
PWR-IN: 28VDC
From: 1A66CB16
PWR-OUT: 28VDC
To: 1A2HR1-HR3
BRU: YES
Description: Provides heat via shelter roadside air ducts

Question 4

Thermostatic Switch

Answer 4

Reference designator: 1A14
Location: the bottom of Bay 1
PWR-IN: 28VDC
From: 1A72 (Ambient Air control panel)
PWR-OUT: 28VDC
To: 1A72 (ambient air control panel
BRU: YES
Description: Controls roadside heater to prevent overheating

Question 5

Compartment Control Module

Answer 5

Reference designator: 1A48
Location: Bay 4 (over MS1 chair)
PWR-IN: 28VDC
From: 1A119 (Gas Particulate Filter Unit)
PWR-OUT: N/A
To: End
BRU: YES
Description: Monitors and controls shelter and 1A108 (protective entrance) air pressure
Lights: Yes
Horn:Yes

Question 6

Light Panel MS1 and MS3

Answer 6

Reference designator: 1A49(MS1) and 1A85(MS3)
Location: over MSs
PWR-IN: 28VAC
From: 1A111(transformer assembly) steps down VAC to 28VAC from 115VAC
PWR-OUT: 28VAC
To: 1A49DS1 & DS2 / 1A85DS1 & DS2
BRU: YES
Description: Provides light for operation station
Lights: Yes

Question 7

Lighting Control Panel

Answer 7

Reference designator: 1A71
Location: Bay 6
PWR-IN: 28VAC
From: 1A111(transformer assembly) steps down VAC to 28VAC from 115VAC
PWR-OUT: 28VAC
To: 1A49DS1 & DS2
BRU: YES
Description: controls brightness of shelter aisle lamps
Lights: Yes

Question 8

Air conditioner control panel

Answer 8

Reference designator: 1A69 and 1A70
Location: Bay 6
PWR-IN: 28VAC
From: 1A66CB30(1A69) and 1A66CB31(1A70)
PWR-OUT: 28VAC
To: 1A120 (air conditioner)(1A69) and 1A118(air conditioner)(1A70)
BRU: YES
Description: used to vary shelter air temperature
Lights: Yes

Question 9

Ambient Air Control Panel

Answer 9

Reference designator: 1A72
Location: Bay 6
PWR-IN: 28VDC
From: A66PS1
PWR-OUT: 28VDC
To: 1A110(FAN Door)
BRU: YES
Description: provides status and fault information on AACS
Lights: Yes

Question 10

Air doors

Answer 10

Reference designator: A3 and A112
Location: rear shelter blower at the bottom
PWR-IN: 28VDC
From: 1A111(transformer assembly)(1A1122) and 1A1(fan door)(1A3)
PWR-OUT: 28VAC
To: 1A111(transformer assembly)(1A1122) and 1A1(fan door)(1A3)
BRU: YES
Description: Door for equipment AACS (1A112-curbside)(1A3-roadside)
Lights: no

Question 11

Fan doors

Answer 11

Reference designator: 1A1 and 1A110
Location: over MSs
PWR-IN: 28VAC
From: 1A111(transformer assembly) steps down VAC to 28VAC from 115VAC
PWR-OUT: 28VAC
To: 1A49DS1 & DS2
BRU: YES
Description: Provides light for operation station
Lights: Yes