AIT questions I Got Wrong

Question 1

Purpose of steam boiler low water cut off

Answer 1

Kill burners

Question 2

Purpose of Syphonic pigtails on low pressure steam

Answer 2

Protect the controls

Question 3

Effective vent height question

Answer 3

5ft

Question 4

The first question 8 gallonsto litres how many FU

Answer 4

19 Something

Question 5

Sizing high-pressure gas by psi question

Answer 5

Size just the high-pressure run

Question 6

Required access size to appliance question

Answer 6

36x36

Question 7

Testing gas valve coils question

Answer 7

Anticipator gets cooked

Question 8

Control circuit question 120 V or 24V

Answer 8

24V

Question 9

The valve on a re-circ line question

Answer 9

Globe on re-circulation

Question 10

Size of the dual vent on symmetrical water closet question

Answer 10

1 1/2”

Question 11

Draft hood question no BTU info common size

Answer 11

10”

Question 12

Carrier toilet question

Answer 12

Adjustable face plate

Question 13

The better material for kitchen/grease

Answer 13

ABS

Question 14

Temperature sensing element in gas oven

Answer 14

Bulb

Question 15

The vent header or vent stack question size

Answer 15

2” vent header

Question 16

The continuous vent question

Answer 16

Most upstream

Question 17

Interceptor vents terminating at different heights

Answer 17

Air circulation

Question 18

How to test flow switch

Answer 18

Continuity with water and without

Question 19

Piping practice question with hydronic

Answer 19

Lines Drain back

Question 20

What input do you use for boiler sizing question?

Answer 20

Net

Question 21

What keeps propane liquid in a bottle

Answer 21

Pressure

Question 22

Electric heat question with thermostat, thermopile, thermal couple, thermister question

Answer 22

Thermostat

Question 23

Sensing temperature in in floor question

Answer 23

Thermistor

Question 24

Steam trap was other one and the answer was

Answer 24

Trap steam

Question 25

What backflow device for severe

Answer 25

Reduce pressure backflow preventer

Question 26

Air supply termination area

Answer 26

This duct must be run from the outdoors (inlet) to and terminate within one foot above (vertically) and two feet horizontally of the appliance burner having the largest input.

Question 27

Valve to withdraw liquid from propane tank ?

Answer 27

Internal excess flow valve

Question 28

Hanger question 120’ every 10’

Answer 28

Answers 13

Question 29

Boiler standby losses

Answer 29

15-20%

Question 30

Manifold/ connect relief to common relief on a reg

Answer 30

100% of largest 50% of everything else

Question 31

Gas line depth

Answer 31

15” deep 24” commercial

Question 32

Clocking the meter

Answer 32

Size of proving dial (1,2,5 typically) divided by number of seconds per revolution
X60
X60

Question 33

What affects the vaporization in a propane tank

Answer 33

Wetted area