1St Year Plumber Tq - Heating Review

Front 1

ASME

Back 1

American Society of Mechanical Engineers

Front 2

ASTM

Back 2

American Society of Testing and Materials.

Front 3

BTU (British Thermal Unit)

Back 3

The amount of energy required to raise the temperature of one pound of water through 1°F.

Front 4

IBR

Back 4

Institute of Boiler and Radiator Manufacturers (Replaced by the Hydronics Institute)

Front 5

Cast Iron Boiler

Back 5

A Boiler in which the heat exchanger is constructed of cast iron. Usually contains larger volume of water than other boilers. Also known as High Mass Boilers.

Front 6

Low-Temperature Boiler

Back 6

Boiler limited to a maximum operating temperature of 250°F (121°C).

Front 7

Input Rate

Back 7

The Rate at which gas is supplied to an appliance.

Front 8

Firing Rate

Back 8

The Rate at which fuel is Fed to a Burner, expressed as volumes, heat units or weight per unit time.

Front 9

Rating Plate

Back 9

A Plate affixed to an appliance, designating the conditions by which the appliance must operate.

Front 10

MBH

Back 10

A term used to express 1000 BTU's per Hour.

Front 11

PRV (Pressure Reducing Valve)

Back 11

A Device with a globe valve pattern; used to reduce steam to a lower pressure. May be single or double seated. For hot water it is used to reduce city water pressure to the minimum desired system pressure and serves as an automatic water feeder.

Front 12

BHP (Boiler Horse Power)

Back 12

The evaporation of 34.5lb(15.7kg) of water per hour from a temperature of 212°F(100°C) into dry saturated steam at the same temperature. Equivalent to 33,475 BTU (35,280 KJ)

Front 13

CGA

Back 13

Canadian Gas Association

Front 14

AIR SCOOP

Back 14

A Device installed in the hot water supply main at/or near the heating source to separate and direct air to the Cushion (Expansion) or Automatic Air Vent

Front 15

Prv (Pressure relief valve)

Back 15

A relief valve or pressure relief valve (Prv) is a type of safety valve used to control or limit the pressure in a system.

Front 16

LWCO (Low Water Cut-Off)

Back 16

A float-operated or electronic device used to shut down the fuel burner when the water level in the boiler drops below its operating level.

Front 17

Comfort Range

Back 17

The range of temperatures within which the majority of the inhabitants feel comfortable. (18°-22°C)

Front 18

Conduction

Back 18

The transfer of heat through a solid.

Front 19

Convection

Back 19

The transfer of heat through liquid or gas.

Front 20

Air Vent

Back 20

A valve opening in the top of the highest drum of a boiler or pressure vessel for venting air. Also a device (manual or automatic) used to remove air from a steam or hot water heating system. Usually located at highest point in the system. (Known as a Coin Vent because it can fit a dime)

Front 21

Aquastat

Back 21

An automatic switching device that is operated by temperature change. On a boiler it may act as a high limit protector or on/off controls for the main burners to maintain boiler temperature differential.

Hint 21

Front 22

Combination Gauge

Back 22

A gauge that indicates Pressures and Temperature.

Front 23

Compound Gauge

Back 23

A bourdon tube pressure gauge used to indicate pressure or vacuum inches of Hg (Mercury)

Front 24

Radiator.

Back 24

Puts off !Convection Heat! Not Radiant Heat.

Front 25

14.7 PSIA = ____ PSIG?

Back 25

14.7 PSIA = 0 PSIG

Front 26

1 BTU = _______ Joules

Back 26

1 BTU = 1054 J

1 KJ = 0.984 BTU

Front 27

Low-Pressure Boiler

Back 27

A Boiler connected to a system limited to a maximum working pressure of 30 PSIG (water) or 15 PSIG (Steam)

Front 28

BIMETAL

Back 28

Two dissimilar metals fused together over their entire length. EACH METAL HAS A DIFFERENT COEFFICIENT OF EXPANSION.

Front 29

Flow Switch

Back 29

A Device installed in the piping that opens a circuit if no flow is present. Designed to protect the boiler in the event of circulator failure.

Front 30

Heating Load

Back 30

The amount of energy (in BTUH British Thermal Units per Hour) required for water or space heating.

Front 31

What is Hg

Back 31

Mercury.

Front 32

Monoflow Tee

Back 32

(Venturi Tee) A tee used to create an instruction in a pipeline and a drawing effect on the downstream side. (Used in one-pipe forced water heating systems)

Front 33

One-Pipe System

Back 33

A hot water system in which cooled down water from each unit is returned to supply the main to mix with and cool downstream units. Utilizes Monoflow Tee's.

Front 34

Reverse Return System

Back 34

First Supplied, Last Returned

Front 35

Another name that refers to hot water heating systems?

Back 35

Hydronic Heating

Front 36

Maximum Pressure and Temp for Low Pressure Hot Water Boiler?

Back 36

120°C (250°F)

and

1100 kPa (160 PSIG)

Front 37

Cast Iron or "Pancake 🥞 Boilers" are Joined Together With? Drawn Together With?

Back 37

Joined with Push Nipples or Composition Seating Rings, Drawn Together With Tie-Rods/Draw Bolts.

Front 38

Hydrostatic Test of a Boiler Shall Be?

Back 38

1.5x the working pressure.

Front 39

Heat Exchangers Are Made Of?

Back 39

Steel, Stainless Steel, Cast Iron, Copper and Titanium.

Front 40

In a fire tube boiler hot gasses travel?

Back 40

THROUGH THE TUBES!

Front 41

In a water tube boiler hot gases travel?

Back 41

AROUND THE TUBES!

Front 42

Residential Cast Boilers have a max psig of?

Back 42

30 PSIG and must have a 30 PSIG Relief Valve Installed.

Front 43

High Temp Boilers operate over? And are rated in?

Back 43

Operate over 120°F / 250°C.

Are Rated In MBH or BHP.

Front 44

WHAT IS ONE BHP EQUAL TO IN BTUH?

Back 44

!33,475 BTU/H!

Front 45

Heat loss through a piping system is classified as?

Back 45

Transmission Loss

Front 46

What is the minimum return water temperature for a conventional residential boiler?

Back 46

140°F / 60°C

Front 47

Latent Heat of Water Fusion/Solidification?

Back 47

144 BTU/LB

335 kJ/KG

Front 48

Latent Heat of Water Vaporization / Condensation?

Back 48

970 BTUs/LB

2257 kJ/KG

Front 49

Latent Heat of Propane Vaporization / Condensation?

Back 49

154 BTUs/LB

356 kJ/KG

Front 50

Latent Heat is?

Back 50

A heat that causes changes in state not Temperature.

Front 51

What is a BTU?

Back 51

The amount of heat energy required to change one pound of water one degree Fahrenheit.

Front 52

What is a Kilojoule?

Back 52

Directly related to BTU but in metric. To raise the temperature of one kilogram of water by one degree Celsius requires 4.2 kJ

Front 53

What is Sensible Heat?

Back 53

Heat that changes temperature only , not state.

Front 54

What is Specific Heat Capacity?

Back 54

(Each Substance Reacts Differently When Heated)

The specific heat capacity is the quantity of heat Required to CHANGE the TEMPERATURE of ONE UNIT OF MASS by ONE DEGREE.

Front 55

Specific Heat Cap Of Water and Air?

Back 55

Water = 1 BTU/lb°F or 4.2 kj/kg°C

AIR = 0.24 BTU/lb°F or 1.01kj/kg°C

Front 56

Specific Heat Capacity of Ice and Steam?

Back 56

ICE AND STEAM =

Both are the Same

0.5 BTU/LB°F

2.0 kJ/KG°C

Front 57

Specific Heat Capacity of Propane?

Back 57

0.6 BTU/LB°F

2.47 kJ/KG°C

Front 58

Sensible Heat Formula Is?

Back 58

Specific Heat Capacity

X

Mass

X

(Delta) ∆ T

(∆T=Temperature Change)

Front 59

LATENT HEAT FORMULA!

Back 59

Mass

X

Latent Heat Value

Front 60

Total Heat is Equal To?

Back 60

SENSIBLE

+

LATENT

(MUST DO FOR EVER CHANGE OF STATE)

Front 61

Water changes state at?

Back 61

Fusion/Solidification =

0°C / 32°F

Vaporization/condensation =

100°C / 212°F

Front 62

When steam cools in a cast radiator it?

Back 62

Condenses, Returns to Boiler

Front 63

The water column or Guage Glass is used?

Back 63

To Check Water Level

Front 64

For LOW pressure steam boilers the Prv is set to?

Back 64

15 PSI

Front 65

Safety Device on steam boiler when water level drops?

Back 65

LWCO

REQUIRED BY CODE FOR ALL STEAM BOILERS.

Front 66

Pressure Troll and Compound Gauge are installed on the?

Back 66

Pigtail 🐖 Siphon

Front 67

Supply Tappings are Found on?

Back 67

On or near the top of a Steam Boiler.

Front 68

Cast iron sections are _________ Full on a steam boiler?

Back 68

PARTIALLY FULL NEED ROOM FOR STEAM.

Front 69

Two pipe systems use what instead of airvents on a radiator?

Back 69

Steam Traps

Front 70

Quick Vents are for?

Back 70

Expelling air quickly out of the supply main.

Front 71

The length of the riser piping from the main to the radiator should be atleast?

Back 71

THREE FEET

Front 72

Boiler Scoop

Back 72

A Device similar to an Air Scoop Located at the top of the boiler, directing air to the relief valve.

Front 73

When skimming how should the water be kept?

Back 73

Just Below Boiling Point and Released at the middle of the Nipple.

Front 74

Joule is equal to?

Back 74

1054 j = 1 BTU

1 KJ = 0.948 BTU

Front 75

Centrifugal Pumps are rated in?

Back 75

HEAD or HEAD PRESSURE rather than straight pressure.

Front 76

What two values are found on a Pump curve?

Back 76

Head and Flow

Front 77

What Happens to Water When It Boils?

Back 77

It Changes State and Expands to Roughly 1700 Times its Original Volume In The Form Of Steam.

Front 78

What is our main method of creating Energy Today?

Back 78

Boiling water to make steam which then powers a type of steam engine.

Front 79

Heat Always Travels

Back 79

from the warmer body to the colder body.

Front 80

Insulation on piping prevents what type of heat transfer?

Back 80

Mainly Prevents Heating Losses Due to Conduction.

Front 81

Why Do Most Solids and Liquids Expand When Heated?

Back 81

Molecules Move Faster and Take Up More Space.

Front 82

What is the Temperature when water is at its most dense?

Back 82

39˚F / 4˚C

Front 83

When a Volume Of Water Nears Freezing Point It?

Back 83

Expands Slightly

Front 84

What Happens to water as it changes to steam?

Back 84

It Expands to roughly 1700 Times its original volume.

Front 85

COEFFICIENT OF LINEAR EXPANSION?

Back 85

The amount a material will expand for every degree of temperature change.

Front 86

!WHAT IS THE EXPANSION FORMULA!

Back 86

Length Change =

O.Length X C.O.Expansipm X ▲T

Front 87

What Are the Maximum Operating Temperatures for a Low Temp/Press Hot Water Boiler

Back 87

120˚C (250˚F)

Front 88

High Temperature Boilers Operate over 120˚F/250˚C and are Rated In What?

Back 88

MBH or BHP

Front 89

Heat Lost Through The System Piping is Considered a?

Back 89

Transmission Loss

Front 90

What Does EDR Stand For?

Back 90

EQUIVALENT

DIRECT

RADIATION

Front 91

Residential Cast Iron Hot Water Boilers Must Be Equiped With A ________ PSI Relief Valve?

Back 91

30 PSI

Front 92

Net Rating Is The?

Back 92

Amount of Heat Available After Piping and Pickup Allowances are Deducted.

Front 93

Minimum Water Return Temperature for a Conventional Residential Boiler?

Back 93

60˚C/140˚F

Front 94

Most IMPORTANT Thing A Heating Tech Can Remember to do ON EVERY JOB?

Back 94

!ISOLATE EVERYTHING!

Front 95

Head Would Be Described As?

Back 95

A Comparison of a pressure with the height of a column of liquid that would exert and equal Pressure.

Front 96

A Boiler has a Designation as Low Temperature it is described as?

Back 96

160PSIG or 1100kPa

Front 97

Low Temperature Boilers are usually rated in?

Back 97

Net Rated In BTU/hr or EDR

Front 98

What Mandatory Switch is Required on a Coil Type Boiler Over 400 000 BTU/hr?

Back 98

Flow Switch

Front 99

What Items Will You Always Find On A Steam Boiler Only?

Back 99

Sight Glass, Pressure Operating Control, Hartford Loop

Front 100

What Items Indicate you are Looking at a Hot Water Boiler?

Back 100

Make-up Water Line,

Circulator

Front 101

What Is Needed to Size A Pump?

Back 101

Head and Flow

Front 102

What Is The Place Known As Where The Expansion Device Connects to a Hydronic System?

Back 102

The Point of No Pressure Change.

Front 103

A Float Switch Must Be Installed ___ Pipe Diameters away from any source of Turbulence?

Back 103

Five Pipe Diameters Away

Front 104

High Temp/High Press Boilers are Covered Under What ASME Section.

Back 104

ASME SECTION 4

Front 105

An Expansion Tank Shall Be Installed On The?

Back 105

Upstream of the Inlet Side of the Pump

Front 106

Majority of Residential Zone Valves Operate On?

Back 106

24 Volt

Front 107

What Device Cycles a Steam Boiler On/Off?

Back 107

A Pressure Troll

Front 108

If Two Pumps Are Installed In Series?

Back 108

The Pressure is additive but the flow remains constant.

Front 109

Velocity Energy of a Circulator is Created By?

Back 109

The Vanes of the Impellor

Front 110

First Supplied First Returned?

Back 110

Direct Return System

Front 111

First Supplied Last Returned?

Back 111

Reverse Return System

Front 112

A Combination Gauge Is For?

Back 112

Indicating Pressure and Temperature on a Hot Water Boiler.

Front 113

What Causes Convection Currents?

Back 113

Different Air Densities

Front 114

How Is The Heat Output of Finned Tube Baseboards Controlled?

Back 114

By Adjusting the Damper

Front 115

How Is Finned Tube Baseboard Rated?

Back 115

BTU per FOOT per Hour based upon supply water temp, flow rate and entrance air temperature of 65˚

Front 116

Where should the LINE SCOOP be installed in relation to the boiler?

Back 116

As close to the outlet as possible.

Front 117

A series loop system should be limited to?

Back 117

60 - 70 MBH

Front 118

If you are reducing the piping in a hot water system you should use?

Back 118

Eccentric couplings.

Front 119

Two types of hydronic systems (based on how the water is delivered)

Back 119

1. GRAVITY SYSTEM

2. FORCED FLOW SYSTEM

Front 120

A canned rotor pump is also known as a?

Back 120

wet rotor circulator.

Front 121

A circulator should be installed?

Back 121

Downstream of the expansion tank.

Front 122

3 types of piping used in hydronic heating?

Back 122

Steel Pipe

Copper Pipe/Tubing

Plastic Tube

Front 123

Why are balancing valves installed?

Back 123

To balance the heat delivered to different zones as required.

Front 124

On a boiler fitting the ___ ____ dress water from just below the top of the tank.

Back 124

Dip Tube

Front 125

What is the purpose of a wild loop?

Back 125

To prevent the system/pump from dead heading allowing continuous flow.

Front 126

What are the 7 parts of a centrifugal pump?

Back 126

1.Impeller

2.Diffuser

3. Volute

4. Cover

5. Motor

6. Seals

7. Bearing

Front 127

Centrifugal Pump Inside Description?

Back 127

Front 128

A Wet Rotor Pump?

Back 128

Allows system water to circulate between the rotor and stator. This helps cool and lubricate bearings. Must be installed horizontal.

Front 129

What does Cross-linking refer to?

Back 129

A process of manufacturering pipe.

Front 130

Series Loop?

Back 130

A piping system where the heat transfer units are a part of the piping. Downside is limited heating capacity for each circuit.

Front 131

Major disadvantage of two pipe direct return system?

Back 131

Hard to balance flow to each heat transfer unit.

Front 132

Cast iron Radiators are available in what two types?

Back 132

A solid type designed for radiant heat.

A rear finned type that is designed for radiant heat but fins aid in convection.

Front 133

(Wall fin) finned tube type baseboard

Back 133

Copper Tube 1/2"→3/4"

Aluminum fins 2 1/2"x2 1/2".

Range from 55 to 65 fins per Foot.

Front 134

Finvector Units (commercial fin)

Back 134

Larger tube and fins than baseboard.

19→32mm (3/4"-1 1/4") copper

25→50mm (1" to 2") IPS Steel

Front 135

CSA B214 States in regard to fin covering?

Back 135

Protection shall be provided around any heat distribution unit in which the system design operating temperature permits surface contact Temperature above 60°C (140°F)

Front 136

"Convectors"(heating unit) imply?

Back 136

A unit that operates by gravity circulation.

Front 137

Residential Circulators use fractional horsepower and are usually limited to?

Back 137

8-10' of maximum head. Flow rates of less than 20 GPM

Front 138

Always mount a oil-lubricated circulator?

Back 138

With oil cup up and shaft horizontal.