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Humber Real Estate Course 2 > Module 7: Heating and Cooling Systems > Flashcards

Module 7: Heating and Cooling Systems Flashcards

1
Q

Voltage for most homes

A

240 volt system that provides 240-120 volts

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2
Q

Voltage

A

potential energy of any electrical system

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3
Q

Resistance

A

tendency of any material to resist the flow of electricity

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4
Q

Conductive materials have

A

low resistance

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5
Q

Watts

A

voltage x current

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6
Q

Bushbar is a current carrying

A

metal bar w/ have black and red wires connected to it

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7
Q

white wire is connected to

A

neutral bushbar

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8
Q

black wires are known as

A

hot wires

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9
Q

breakers are directly connected to

A

red or blackbushbar

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10
Q

Distribution panel typically has 10 120 volt circuits or

A

1+ 240 for large electric appliances

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11
Q

Ground fault circuit interrupter

A

shuts off the power when a current is leaking

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12
Q

Most circuits are rated at

A

15 amps

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13
Q

Problems w aluminum wiring

A
  • softer than copper can lead to overheating
  • creeping: expands more than copper, and can lead to a loose connection & overheating
  • Can become oxidized and corrode
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14
Q

What does upgrading to a cicuit breaker from fuses do

A

protects electrical system from overloading which results in a fire

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15
Q

how close should exterior outlets have to be to have a GFCI

A

2.5 meters

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16
Q

Overloading

A

circuit is drawing more current than it can handle

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17
Q

short cirucit

A

hot wire and neutral wire touch

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18
Q

ground fault

A

hot wire and ground wire come in contact

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19
Q

short circuit

ground fault happen bc

A

one or both wires come loose

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20
Q

flickering/dimming lights is caused by

A

heavy load on a circuit

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21
Q

Houses that face ___ are good for solar panels

A

southwest

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22
Q

Capacity is the amount of heat a system can generate. Input capacity is

A

how much fuel energy is consumed for every hour of operation

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23
Q

Input capacity is measured in

A

BTU (amount of heat required to raise temp of 1 lb of water by 1 f degree)

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24
Q

Output capacity

A

how much usable heating/cooling a unit provides

25
Q

Effiency rating is

A

input cap + output cap

26
Q

AFUE rating

A

how much fuel is converted to heat

27
Q

60% (low-effiency) AFUE rating

A

40 cents of every dollar spent on heating are wasted

28
Q

80% (mid-effiency) AFUE rating

A

20 cents of every dollar spent on heating are wasted

29
Q

95% (high-effiency) AFUE rating

A

5 cents of every dollar spent on heating are wasted

30
Q

Radiant heating systems

A

supply heat directly to the floor or to the walls

31
Q

Heat exchanger

A

buring feul on one side, water on the other to heat it to 71 degrees

32
Q

In AC, refrigerant is put under pressure by a compressor until

A

it becomes liquid which is cooled by a condenser until it becomes liquid

33
Q

Vented fireplaces lose less heat

A

than fireplaces w chimneys

34
Q

Wood energy tech transfer is a

A

inspection of all wood burning appliances

35
Q

Normal water pressure

A

50 psi

36
Q

Low water pressure can be caused by

A
  • older service pipes that are too small

- shut-off valve is half open or clogged

37
Q

black water

A

human waste

38
Q

gray water

A

waste water from dishes, showers

39
Q

PEX piping

A

can be used for water distribution, hot water, draining, venting

40
Q

PVC piping

A

used for warm, cold water, drainage, venting

41
Q

CPVC piping

A

can be used for everything, less noisy, more flexible

42
Q

Not advisable to use for drinking water

A

Galvanized steel

43
Q

Grey water systems

A

enables how to use water for tasks that dont need perfectly clean water

44
Q

Cisterns

A

collect rainwater for using in outdoor tasks

45
Q

Water heater recovery rate

A

amount of hot water the heater is capable of providing

46
Q

Fastest recovery rate

A

oil (followed by gas, electricity)

47
Q

leaky faucet 1 drip per second =

A

20 liters a day

48
Q

Waste quality and quantity in wells is covered by

A

ontario water resources act and safe drinking water act

49
Q

Pitless adapter

A

connect the well casing w/ the water line into a home

50
Q

Average flow rate

A

25 to 55 liters per minute

51
Q

Class 1 sewage system

A

waterless toilets

52
Q

Class 2 sewage system

A

grey water systems

53
Q

Class 3 sewage system

A

cesspools, dumping stations for recreational vehicles

54
Q

Class 4 sewage system

A

septic tank & leaching bed - most commonly used

55
Q

Class 5 sewage system

A

holding tank that is removed and taken away for treatment

56
Q

Septic tanks should be at least __ from any structure

A

1.5 meters

57
Q

Septic tanks should be at least __ from

the property line

A

3 m

58
Q

Septic tanks should be at least __ from a lake, river etc.

A

15 m

Humber Real Estate Course 2 (17 decks)

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