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

19
Q

Class 2

Class 1

A

2 residential

1 industrial

20
Q

Section 16 doesn’t cover communications circuits

21
Q

Does B52 cover residential

22
Q

B52 provides

A

Minimum requirements

23
Q

Cooling towers should have what ph

24
Q

Is dry air better

25
Brazing minimum temp
Above 840
26
Approach is
Leaving water and entering wet bulb
27
Intermittent pressure relief caused by
Faulty expansion tank
28
Over 10ft3 vessel needs
Dual pressure relief valve
29
Delay on break
No short cycling
30
Sizing condensing unit fur residential
Diverse square feet by 600ft2 per ton
31
Boyle’s
Temperature
32
Charles 1
Volume
33
Charles 2
Pressure
34
Swamp cooler
Constant enthalpy, swamp cooler