Hvac

Question 1

What do AFUs do?

Answer 1

Treat the air from the atmosphere, and send it to the ATU

Question 2

How many AFUs are there?

Answer 2

4x FWD - 2C, 2D
4x Mid - 3L
7x Aft - 3S, 3T

Question 3

Why are there more AFUs Aft than FWD or MID?

Answer 3

Because there are more CWP Aft

Question 4

What is the password for AFU touchscreen?

Answer 4

1780

Question 5

How do you change an AFU from local and remote?

Answer 5

AFU touchscreen

Question 6

How many CWP are there?

Answer 6

3x FWD - 8F and 9F
3x MID - 9K
4x AFT - 8N, 9P

Question 7

What pressure is the CW ringmain?

Answer 7

Between 4 and 6 bar

Question 8

Hiw many ATUs on board?

Answer 8

239

Question 9

What do Chilled water plants use?

Answer 9

Demin Water

Question 10

ATU Process

Answer 10

Inlet Plenum Filter - Cleans Air of dirt, etc
Cooling coil - Used Chilled water to cool air
Droplet eliminator - Removes moisture
Supply Fan - Pump, and belt supplies air to vents

Question 11

How are inlet Plenum filters cleaned

Answer 11

LP air

Question 12

ATU 3 way valve setting

Answer 12

Y2 to 120

Question 13

What is the LCP called

Answer 13

Honeywell

Question 14

How do you fix a hot ATU most of the time?

Answer 14

Bleed it of air

Question 15

What to do in case of a TLF

Answer 15

Red risk reset, reset all dampers manually