Note's

Question 1

How is equipment sized?

Answer 1

To warm product/initial pull down

Question 2

Before installing new equipment in a home, consider the existing ______ losses and how they can be resolved.

Name a few solutions

Answer 2

heat losses

extra insulation in attic, new siding, blinds, windows

Question 3

True or False

Efficiency equals cost savings

Answer 3

False.

The house must be sealed

Question 4

Which side of the home is shaded?

Answer 4

North side

Question 5

Which side of the home is warmer?

Answer 5

South side

Question 6

Which side of the home is warm in the morning and cooler in the afternoon/evening.

Answer 6

East side

Question 7

Which side of the house is warmer in the afternoon and cooler in the morning?

Answer 7

West side

Question 8

The North side of a building sometimes require ______ _____ due to lack of sun

Answer 8

reheat coils

Question 9

Is air an insulator?

Answer 9

Yes, it holds heat

Question 10

What side of the wall is the vapour barrier on? why?

Answer 10

Inside

The outside wall must be able to breathe due to moisture control

Question 11

_____ R values and _____U values are ideal construction materials.

Answer 11

high, low

Question 12

What does it mean when dry bulb and wet bulb = each other

Answer 12

high humidity

Question 13

Dry bulb is ________

Answer 13

ambient

Question 14

Cold outside air provides what effect to warm inside air?

Answer 14

dehumidification

Question 15

U value is the __________ of R value

Answer 15

reciprocal

ex. R 5 is equal to c 1/5

Question 16

Explain Exfiltration

Answer 16

pressure difference between inside and outside

Question 17

Should a building be in a slight negative or slight positive pressure? Why?

Answer 17

Slight positive so you’re not drawing in moisture

Question 18

How can you test whether a building is in a positive or negative?

Answer 18

Use a lighter and watch the direction of the flame

Question 19

Purpose of make-up airs in apartment hallways?

Answer 19

Provide a slight positive to keep odours in hallways

Question 20

When sizing a heat load, do you account for people appliances, etc?

Answer 20

No, you’re only replacing heat lost. Size based on empty space

Question 21

How is a cooling load sized?

Answer 21

Sum of all heat loads

Question 22

How much static for a low pressure system and how much CFM is lost?

Answer 22

Under 2’’

5% lost

Question 23

How much static for a mid pressure system and how much CFM is lost?

Answer 23

2’’ to 6’’

2% to 5% lost

Question 24

How much static for a high pressure system and how much CFM is lost?

Answer 24

over 6’’ static

1% lost