TX Final Compilation Flashcards

1
Q

White pvc temp

A

65

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2
Q

Flame safeguard system on oil furnace is sensitive to what

A

Light

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3
Q

50% dilution air

150-180F reduction

A

Yea

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4
Q

Grey pvc

A

90 Celsius

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5
Q

Residential oil

Crude oil

A

Number 2

Number 6

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6
Q

Flame safeguard system on Standing pilot natural gas furnace is sensitive to

A

Heat

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7
Q

Most common regulator built into an RTU heating unit gas valve is the

A

Servo regulator

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8
Q

Colour of wire not on all blower motors

A

Yellow

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9
Q

When considering is taking geothermal what should you look for

A

Contamination in the ground

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10
Q

Btu in a KW

A

3412

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11
Q

Hydronic system w a compression tank has what for air

A

Air control system

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12
Q

SPDT do r and w make on a temp rise

A

No

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13
Q

What plug on tq

A

5-20r 125V

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14
Q

Section 16 electrical

A

Class 1 and 2 circuits

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15
Q

Installing a disconnect for any motor

A

9Metres from motor and in sight

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16
Q

AC disconnect must be

A

Less than 3M from the unit and within sight

17
Q

Over current

A

Breaker fuse

18
Q

Overload

A

Heater

19
Q

Class 2

Class 1

A

2 residential

1 industrial

20
Q

Section 16 doesn’t cover communications circuits

A

True

21
Q

Does B52 cover residential

A

NO

22
Q

B52 provides

A

Minimum requirements

23
Q

Cooling towers should have what ph

A

7

24
Q

Is dry air better

A

Yes

25
Q

Brazing minimum temp

A

Above 840

26
Q

Approach is

A

Leaving water and entering wet bulb

27
Q

Intermittent pressure relief caused by

A

Faulty expansion tank

28
Q

Over 10ft3 vessel needs

A

Dual pressure relief valve

29
Q

Delay on break

A

No short cycling

30
Q

Sizing condensing unit fur residential

A

Diverse square feet by 600ft2 per ton

31
Q

Boyle’s

A

Temperature

32
Q

Charles 1

A

Volume

33
Q

Charles 2

A

Pressure

34
Q

Swamp cooler

A

Constant enthalpy, swamp cooler