Gasfitting Redseal

Question 1

How far can appliance be from gascock shutting it off?

Answer 1

50ft, as long as its acessible and properly tagged

Question 2

When can you use one shutoff to shutoff multiple appliances

Answer 2

The appliances need to be direct vent room heaters in residential

Question 3

Hoses for construction heaters must be how long?

Answer 3

15-75ft

Question 4

Minimum clearance required from grade to vent below a veranda?

Answer 4

1ft

Question 5

Minimum working pressure for hoses and fittings?

Answer 5

350psig

Question 6

Minimum distanced between a direct vent outlet and combustion air hood?

Answer 6

3ft

Question 7

Maximum domestic pressure of propane gas in a house?

Answer 7

2psig

Question 8

Max exhaust hose length on dryer

Answer 8

6ft

Question 9

What must be installed with plastic piping?

Answer 9

Tracer wire

Question 10

Gas supply to generator needs to be?

Answer 10

Piped seperately from gas supply to building

Question 11

Whats the difference between bh and b vent

Answer 11

Corrosion resistance

Question 12

Transformers are sized by what?

Answer 12

Va rating

Question 13

Max distance between gas labels in resi?

What about commercial?

Answer 13

6ft

20ft

Question 14

Minimum appliance combustible clearance from a source of ignition in a storage garage?

Answer 14

18”

Question 15

What prodcedure would be used to measure manifold pressure?

Answer 15

Remove outlet screw, screw in adapter, connect manometer, turn on gas

Question 16

How do you clean a pipe before electro fusion?

Answer 16

70% isopropyl alcohol

Question 17

Spark gap on ipi pilot assembly?

Answer 17

1/8”

Question 18

Va limit on class 2 transformer

Answer 18

100 va

Question 19

How many exposed threads on a proper connection?

Answer 19

2-3

Question 20

Clearance between a regulator and an ac unit

Answer 20

10ft

Question 21

What would happen if your vent on gas regulator is blocked?

Answer 21

Pressure would increase

Question 22

Minimum biry depth of gas pipe?

Answer 22

15”

Question 23

What method is used to seal polypropylene?

Answer 23

Gasket

Question 24

What appliance cannot be used as a double acting barometric damper

Answer 24

Incinerator

Question 25

Diameter vent pipe for a regulator with a 3/4 vent outlet and a developed length of 92ft?

Answer 25

1”

Question 26

How what you prepare hdpe pipe before electrofusion?

Answer 26

An approved rasp-type tool

Question 27

Inspirated

Answer 27

Uses fuel to entrain air

Question 28

What is aspirated?

Answer 28

Air to entrain fuel

Question 29

Max c.o allowed in dwelling?

Answer 29

5ppm

Question 30

How would a partially blocked vent affect the operation of a gas regulator?

Answer 30

Slow or sluggish operation

Question 31

Max support spacing for 1” gas line?

Answer 31

8ft

Question 32

Where does the combustion fan recieve an output signal from?

Answer 32

ECM

Question 33

Propane tanks are inspected by whom?

Answer 33

Provincial boiler pressure vessels branch

Question 34

Mass of one cubic foot of propane liquid?

Answer 34

31.7 Ibs

Question 35

Where should a lwco be installed?

Answer 35

In supply or return above the boiler

Question 36

Clearance to combustibles for B vent

Answer 36

1”

Question 37

What is the set point of a low temp bouler with a cut-in temp of 20 degrees Fahrenheit

Answer 37

180 degrees Fahrenheit

Question 38

Hanger spacing 1/2 black

Answer 38

6”

Question 39

Hanger spacing for 1 1/4- 2 1/2” black pipe?

Answer 39

10ft

Question 40

What colour wire would 24v power be?

Answer 40

Red

Question 41

What schedule pipe is required for liquid propane?

Answer 41

80

Question 42

schedule 40 threaded black iron max pressure

Answer 42

125psig

Question 43

Smallest concealed pipe

Answer 43

1/2”

Question 44

Minimum guage size

Answer 44

3”

Question 45

Maximum reading on a test guage for a 50psig pressure test

Answer 45

200psi

Question 46

Gaskets used on gas must be?

Answer 46

Synthetic rubber or cork | No natural rubber

Question 47

When can pipe be reused?

Answer 47

Inspected, cleaned, and tested

Question 48

A roof over 13ft needs a?

Answer 48

Needs a permanent access

Question 49

What does a roof over 26ft need?

Answer 49

A stairwell

Question 50

How is teflon applied?

Answer 50

Clockwise direction with 50% overlap leaving 2 starter threads

Question 51

Max co in vent

Answer 51

400ppm

Question 52

Oxygen percentage range in vent

Answer 52

3-9%

Question 53

C02 percentage in vent

Answer 53

7-10% | 12% being optimal

Question 54

What is fhe sympton of a lifting pilot burner flame?

Answer 54

Too much primary air

Question 55

What fitting is prohibited?

Answer 55

Continuous thread?

Question 56

How can a gasfitter determine if a regulator is not a positive shutoff type?

Answer 56

Downstream pressure increase

Question 57

What light would you use to search for a gas leak

Answer 57

Class 1 group 11a

Question 58

Whats the minimum service clearance

Answer 58

24”

Question 59

Minimum acess opening for an appliance

Answer 59

24x30

Question 60

A clear unobstructed passage leading to an appliance shall have what minimum dimensions?

Answer 60

36x36

Question 61

Appliance in storage garage minimum distance from floor to burner?

Answer 61

18”

Question 62

Appliance in repair garage minimum diatance from floor to burner?

Answer 62

4.5ft

Question 63

Can you repair a heat exchanger in a residential furnance?

Answer 63

Temporarily, if approved by authority having jurisdiction

Question 64

Maximum pressure allowed in a 4 plex?

Answer 64

5psi

Question 65

Max pressure in a mechanical room serving a hotel, motel, care or detention centre?

Answer 65

20psig

Question 66

Maximum gas pressure allowed in any building?

Answer 66

65psi

Question 67

Maximum pressure downstream of the 1st stage regulator on a propane system is?

Answer 67

10psi

Question 68

Liquid propane can be piped into the mechanical room of an idustrial building, true or false?

Answer 68

False

Question 69

Can you have liquid propane in a residence provided its not more then 3ft into the building upstream of the 2nd stage regulator? True or false

Answer 69

True

Question 70

Minimum clearance from a regulator to a commercial clothes dryer exhaust duct is?

Answer 70

3ft

Question 71

Pressure regulators shall not be?

Answer 71

Bypassed

Question 72

Regulators over 0.5psi shall be?

Answer 72

Positive shutoff type

Question 73

What materials are approved for gas piping and tubing?

Answer 73

Steel, copper, plastic

Question 74

What certification standards are required for steel pipe?

Answer 74

Astm a53/a53m or ASTM A106

Question 75

What types of fittings arw approved for use on steel pipe

Answer 75

Malleable iron or steel

Question 76

Flate nuts shall be what?

Answer 76

Forged

Question 77

Appliance to edge of roof distance?

Answer 77

6ft

Question 78

What materials are approved for use as gas tubing?

Answer 78

Seamless copper Seamless steel Csst (corrugated)

Question 79

Every hose or hose fitting needa to have a minimum pressure rating of what?

Answer 79

350psi

Question 80

Plastic piping may only be installed where?

Answer 80

Outside and underground

Question 81

Max pressure drop of a system operating between 7-14” wc?

Answer 81

1”

Question 82

Snallest piping diameter that may be concealed?

Answer 82

1/2”