JJ Ｈａｎｄ Ｃｏｏｌｉｎｇ

Question 1

If a system designed for use with natural gas is supplied with propane gas

1/1

The gas regulator and valve must be replaced

The flame will be too low unless a larger orifice is installed

No changes are needed for the equipment to function properly

The flame will be too high unless a smaller orifice is installed

supplied备有…的

orifice孔，穴，腔

Answer 1

The flame will be too high unless a smaller orifice is installed

Question 2

Which of the problems listed below could occur发生 if gas fired equipment has incorrect venting or not enough combustion燃烧 air:
Untempered air from outside will flow into the house
Tripping绊倒 of a circuit breaker
Gas leak
Carbon monoxide一氧化碳 buildup

Answer 2

Carbon monoxide buildup

Question 3

A device that automatically closes the gas valve if the pilot light goes out is called:
Thermocouple
Drip leg
Globe valve
Temperature pressure relief valve

Answer 3

Thermocouple

Question 4

The house you are inspecting currently has a gas fired furnace or boiler. Each of the following clues may indicate表明 that the house also has an abandoned被遗弃的 buried fuel oil storage tank except
The brick chimney servicing\ the furnace or boiler has deteriorated变质的 mortar joints
Your knowledge that the neighborhood had or still has some houses served by oil heat
Small diameter copper tubes emerging from the inside of the foundation wall or the floor near the furnace or boiler

An approximately大约 1 ¼ inch diameter vent pipe outside coming from underground up against反对 the foundation

Answer 4

Small diameter copper tubes emerging from the inside of the foundation wall or the floor near the furnace or boiler

Question 5

An inspector notes that the heat pump is not functioning and that the condensate pan under the air handler is full of water. Why might these two things be related?
1/1
The full condensate pan tripped绊倒 a condensate overflow switch. The unit turned off in order to ensure确保 that condensate did not spill溢出

The full condensate pan indicates that the air handler fan is not functioning as it should
The full condensate pan indicates that there is a leak in the heat exchanger, which as depressurized减压 the unit, causing it to turn off
The full condensate pan means that combustion燃烧 byproducts condensed 浓缩and are flowing back into the house via the flue. This tripped the flue gas spill switch, turning the unit off

Answer 5

The full condensate pan tripped绊倒 a condensate overflow switch. The unit turned off in order to ensure确保 that condensate did not spill溢出

Question 6

The 3 main controls on a furnace are:

The thermostat, the primary control, and the photocell.

The thermostat, the limit control, and the fan control.

The thermostat, the gas valve, and the thermocouple.

The thermostat, the limit control, and the pump control

Answer 6

The thermostat, the limit control, and the fan control.

Question 7

Which action is required during the Heating Inspection according to the S.O.P.?
0/1

1. Required to observe the interior of flues and fireplace insert flue connections
2. Required to operate automatic safety controls
3. Required to inspect the uniformity or adequacy of the heat supply to rooms
4. Required to inspect the heat distribution分布 system

Answer 7

Required to inspect the heat distribution分布 system

Question 8

A large rectangular duct protruding from the heating system is called a _________.

1. Plenum
2. Register
3. Loop
4. Perimeter

Answer 8

Plenum

Question 9

What color should flames be in a properly operating oil burner?

1. Any color as long as they have sooty or smoky edges
2. White or red
3. Bright orange or yellowish white
4. Blue

Answer 9

Bright orange or yellowish white

Question 10

Air is the heat-conveying medium for Hydronic Heating Systems.

1. True
2. False

Answer 10

False

Question 11

Which of the following need not be observed in the heating system inspection?

Underground oil storage tanks

Ventilation in a furnace room

An abnormal amount of soot in and around the furnace

Gas burners inside the heat exchanger

Answer 11

Underground oil storage tanks

Question 12

If the ducts of the HVAC System run through unconditioned spaces in the house, such as a crawlspace or an attic, then the ductwork should be _______.

Metal

Dampered

Shortened

Insulated

Answer 12

Insulated

Question 13

In a forced air furnace, the burners are used to generate heat in the

1/1

Flue

Plenums

Draft diverter

Heat exchanger

Answer 13

Heat exchanger

Question 14

Where is the reset button on an oil furnace?

Adjacent to the inspector

Below the filter

Next to the fuel pump

On the primary control attached to the burner

Answer 14

On the primary control attached to the burner

Question 15

The heat source for an Air-to-Air Heat Pump is:

Outside Air

Thermal Panels

Electric Resistors

The Ground Temperature

Answer 15

Outside Air

Question 16

You see during your inspection that the air conditioning system has supply registers in each bedroom, but only one large return register is located in the center hallway. Your first course of action would be:
Report that the life of the A/C equipment will be reduced
Recommend to your client that return ducts be installed in each bedroom
Check to see if the bedroom doors are undercut at the bottom
Report that the A/C system will not work well

Answer 16

Check to see if the bedroom doors are undercut at the bottom

Question 17

If part of the air-conditioning unit is in the attic and there is moisture on the ceiling below, what air-conditioner component might be causing the moisture?
Fan
Evaporator Coil Pan
Condenser
Compressor

Answer 17

Evaporator Coil Pan

Question 18

An AC unit has a 3 ton capacity. What is the BTU ?

1/1

36,000

24,000

48,000

12,000

Answer 18

36,000

Question 19

What is a “Cross Connection” as it relates to Plumbing?

When wastewater can be siphoned into the water supply system

When dissimilar metals are used in a single plumbing run

Low water pressure in the supply system

A dielectric connector

Answer 19

When wastewater can be siphoned into the water supply system

Question 20

What is the overall purpose of the Heating Inspection?

To identify the brand name of the heating unit

To identify major deficiencies in the heating system

To open all access panels on equipment

To verify a heat source in each room

Answer 20

To identify major deficiencies in the heating system

Question 21

When a lit match is held at the barometric damper and leans inward toward the smoke pipe, this indicates what?

1. A downdraft is occurring.下沉气流正在发生。
2. Exhaust is moving up the chimney as it should be
3. The damper is broken.
4. Carbon monoxide is escaping into the home.

Answer 21

Exhaust is moving up the chimney as it should be

Question 22

When evaluating the operation of an AC system during the summer months, the temperature differential between the supply and renew air should typically be?

15-20° F

10-15° F

15-30° F

20-25° F

Answer 22

15-20° F

Question 23

Which of the following need NOT be observed as part of the Heating System Inspection?

1. Ventilation in a furnace room
2. An abnormal amount of soot in and around the furnace
3. Underground oil storage tanks
4. Gas burners inside the heat exchanger

Answer 23

Underground oil storage tanks

Question 24

Capillary tubes are part of the:

Condenser coil

Compressor discharge

Heat exchanger

Evaporator coil

Answer 24

Evaporator coil

Question 25

A natural draft unit has a draft fan. True False

Answer 25

Ｆ

Question 26

Why is an open return within 10’ of a furnace or hot water heater a safety hazard? It can damage the heat exchanger It can cause backdrafting from hood drafts It can restrict airflow to the furnace It can pull leaking natural gas into the air supply

Answer 26

It can cause backdrafting from hood drafts

Question 27

Forced-Air Furnaces function primarily by \_\_\_\_\_\_\_\_. 强制空气炉主要由。 Convection 对流 Radiation 辐射 Compression 压缩 Conductio 传导

Answer 27

Convection 对流 Like a blowdryer, Forced convection is a mechanism, or type of transport in which fluid流体 motion is generated生成 by an external外部的 source (like a pump, fan, suction device, etc.). It should be considered as one of the main methods方法 of useful heat transfer as significant重要的 amounts of heat energy can be transported very efficiently有效的.

Question 28

When measuring the temperature drop across the evaporator in a Central Air Conditioning System, a properly running unit on a humid summer day should read: 25-35° F 5-15° F 35-45° F 15-25° F

Answer 28

１５－２５ When measuring the temperature drop across the evaporator in a Central Air Conditioning System, a properly running unit on a humid summer day should read: 15-25° F Most heat pumps average a 20 degree temperature drop 5-15° F - Not cold enough 25-35° F - too cold, likely to cause condensation 35-45° F - Way too cold, will condense in ductwork

Question 29

Which of the following components of the HVAC System would typically be expected to last the longest? 1. Heat pump 2. Hot water boiler 3. Gas furnace 4. Compressor or air conditioner

Answer 29

Hot water boiler ## Footnote Longest: BOILERS Boilers20 to 35 years. Furnaces – 20 to 30 Air conditioners – 15 to 20 Heat pumps – 10 to 20 Ductless mini splits – 10 to 30

Question 30

In a forced air heating system containing a split system air conditioner and a humidifier humidity is reduced by: Condensation at the evaporator coil Condensation within the compressor Running the humidifier in reverse Condensation at the condenser coil

Answer 30

Condensation at the condenser coil ## Footnote Condensation at the evaporator coil 蒸发器盘管处的冷凝 Condensation within the compressor 压缩机内冷凝 Running the humidifier in reverse 反向运行加湿器 Condensation at the condenser coil 凝汽器盘管冷凝

Question 31

How can the Home Inspector identify a Steam Boiler? A water level sight gauge on the boiler An expansion tank in the attic A pressure gauge on the boiler The use of radiators for a heat source

Answer 31

A water level sight gauge on the boiler

Question 32

Upon a call for heat for the thermostat, which components of a Tankless Hot-Water System are activated simultaneously? 当恒温器需要加热时，无水箱热水系统的哪些部件会同时启动？ The burner and the circulating pump 燃烧器和循环泵 The burner and the limit control 燃烧器和限位控制 The circulating pump and the pressure relief valve 循环泵和减压阀 The circulating pump and the low water cut-off 循环泵与低截流

Answer 32

The burner and the circulating pump 燃烧器和循环泵 The burner and the limit control -- No, it is not over heating 燃烧器和限位控制——不，不是过热 The circulating pump and the pressure relief valve -- No, it is not over pressure 循环泵和减压阀——不，没有超压 The circulating pump and the low water cut-off -- No, the question says nothing about low water 循环泵和低水位断流器——不，问题不在于低水位 In tankless systems these 2 start simultaneously (The burner and the circulating pump) 在无油箱系统中，这两个同时启动（燃烧器和循环泵）

Question 34

A Conventional Forced Warm-Air Furnace and a Mid-Efficiency Furnace have which element in common? An intermittent pilot A heat exchanger An induced draft fan A motorized vent dampe

Answer 34

A heat exchanger

Question 35

A gas furnace is being installed in a brand new building. What is the most likely reason that an outdoor air source would be required? 1. The building has unusually tight construction 2. The furnace is classified as a high efficiency furnace 3. The furnace is located in a closet 4. The furnace has a capacity greater than 60,000 BTU

Answer 35

The building has unusually tight construction

Question 36

Gas fired furnace heat exchangers most often fail from 1. Lack of use 2. Rust and metal fatigue 3. Improper gas pressure 4. Low temperatures

Answer 36

Rust and metal fatigue

Question 37

What is the clearance for combustibles of a gas single-walled flue pipe ? 1. 1” 2. 6” 3. 8” 4. 12”

Answer 37

6 inch

Question 38

When inspecting a heat pump, the Home Inspector should: 1. Test it in the cooling mode if the temperature is over 55º. 2. Test it in the cooling mode if the temperature is under 60º. 3. Test it in both modes. 4. Test it in the heating mode if the temperature is under 65º

Answer 38

Test it in the heating mode if the temperature is under 65º

Question 39

When a large number of coils are immersed directly into the boiler water to supply hot water, this is known as? A tankless coil system A recycled condensation A summer-winter hookup An evaporative condenser

Answer 39

A tankless coil system

Question 40

What are the types of heat that must be taken into account when calculating the cooling loads for an HVAC system? 在计算暖通空调系统的冷负荷时，必须考虑哪些类型的热？ Sensible and radiant heat 感热和辐射热 Sensible and latent heat 感热和潜热 Radiant and conductive heat 辐射热和传导热 Conductive and latent heat 传导潜热 Sensible and latent heat 感热和潜热 Latent and sensible heat are types of energy released or absorbed in the atmosphere. Latent heat is related to changes in phase between liquids, gases, and solids. Sensible heat is related to changes in temperature of a gas or object with no change in phase. 潜热和感热是大气中释放或吸收的能量类型。潜热与液体、气体和固体之间的相变化有关。显热与气体或物体的温度变化有关，而没有相位变化。

Answer 40

Sensible and latent heat 感热和潜热

Question 41

While inspecting a heat pump in the cooling mode, you measure a 28°F temperature differential between the interior supply and return air. You should suspect: 0/1 An exterior fan running too slowly A thermostat set too low A dirty filter An overheating compressor

Answer 41

A dirty filter 28°F temperature differential is quite a lot, this would indicate a low air flow possibly due to a clogged filter.

Question 42

If a cooling unit is in an attic where damage may result结果 from condensate overflow Steel ducting is not allowed because of potential damage from condensation An auxiliary condensate drain system is required Attic ventilation must be increased to avoid condensation A supplemental condensate pump is required

Answer 42

An auxiliary condensate drain system is required

Question 43

What device on a heat pump allows it to operate in either a cooling or heating mode? A gas burner beneath the outside coil The Compressor The Reversing Valve The Evaporator and Condenser Coils

Answer 43

The Reversing Valve

Question 44

In a typical residential air-conditioning system, the __________ absorbs吸收 the heat energy from the air passing through it, and transfers the heat energy from the passing air to the refrigerant moving inside it. Evaporator Humidifier Condenser Capillary Tube

Answer 44

正确答案 Evaporator

Question 45

Under what conditions should the Home Inspector not fire up the Steam Boiler? Clear water in the sight gauge Dirty water in the sight gauge A high water level and a low rust line in the sight gauge No water in the sight gauge

Answer 45

No water in the sight gauge

Question 46

What condition should the Home Inspector suspect怀疑 if there is a loud banging or knocking just after the Steam Boiler fires? The Hartford loop is malfunctioning. The limit control is faulty. The water contains rust and mu The pipes are not properly slope

Answer 46

正确答案 The pipes are not properly slope

Question 47

Which of the following is not a component of an air conditioning system? Condenser Evaporator Compressor Ignitor

Answer 47

Ignitor点火器

Question 48

At what pressure would the Pressure Relief Valve open on a Forced Hot-Water Boiler? 28 to 30 PSI 2 to 3 PSI 12 to 15 PSI Water in a closed system is not under pressure.

Answer 48

28 to 30 PSI

Question 49

Low pressure boiler pipes do not carry steam pressure above 12 PSI 15 PSI 6 PSI 9 PSI

Answer 49

15

Question 50

The AC component which functions to put refrigerant gas under a high pressure is: The Expansion Device The Evaporator The Condenser The Compressor

Answer 50

The Compressor

Question 51

If part of the air conditioning unit is in the attic and there is moisture on the ceiling below, what air conditioner component might be causing the moisture? Condensor Evaporator coil pan Compressor Fan

Answer 51

正确答案 Evaporator coil pan

Question 52

Which of the following should be reported as an item near the end of its expected life? Any Boiler Any furnace over 20 years old Any oil furnace Any furnace over 10 years old

Answer 52

Any furnace over 20 years old

Question 53

The heat source for an air to air heat pump is: Outside air The ground temperature Electric resistors Thermal pane

Answer 53

Outside air

Question 54

The utility bills for heating and cooling a home are much higher than expected, Which of the following choices is probably not a reason for this increased cost? The ductwork is poorly sealed The ductwork is poorly insulated The HVAC system has a plugged filter The furnace is natural gas with plastic vent

Answer 54

正确答案 The furnace is natural gas with plastic vent

Question 55

Medium efficiency furnaces have a draft inducer fan and are connected directly to the vent system instead of having a draft hood. There are white and yellowish deposits below the draft inducer fan. A possible explanation for these deposits is that The furnace has failed and is unsafe to operate The seal between the draft inducer fan and the furnace is failing The draft inducer fan is not operating property Moisture is condensing in the vent and running back into the draft inducer fan

Answer 55

正确答案 Moisture is condensing in the vent and running back into the draft inducer fan When you mix nitric acid with the zinc in the galvanizing used to coat the steel. The byproducts of that burning gas are mostly water, nitrogen, sulphur and various other crud - basically nitric acid. Ever see the stuff that builds up on the zinc battery posts of a car? Same stuff. How much you get depends on how well the furnace is venting. If it vents well, you'll get almost none; if it's not venting well, you'll get a lot because there's more condensation occurring inside the vent and you've got more acid there. That looks like a single-walled vent. Is it? If so, is it located in an unheated area or inside. If it's located inside in conditioned airspace and you're getting that much condensate residue you've definitely got some venting issues.

Question 57

The __________ is located inside the outdoor condenser unit and receives the low-pressure refrigerant vapor through the suction line, and compresses or squeezes it into a smaller volume at a higher pressure. Evaporator Insulator Compressor Condenser

Answer 57

Compressor

Question 58

While inspecting the furnace, you detect very high levels of carbon monoxide at the supply air registers. You should: 0/1 Immediately shut off the main gas valve to disable the unit Open windows, shutdown systems, advise immediate evaluation by HVAC contractor Explain that the unit will need servicing in the future to prolong its life Advise that everyone run out of the house for safety

Answer 58

正确答案 Advise that everyone run out of the house for safety

Question 59

How might you test for a down-drafting condition with a gas water heater? Trip the relief valve. Watch the flame in the heating chamber. Mirror will become fogged when held next to the draft hoo Smell around the gas control valve and at unions and connections in the gas lines.

Answer 59

正确答案 Mirror will become fogged when held next to the draft hoo