Shop Final Review

Question 1

What does seer stand for

Answer 1

Seasonal energy efficiency ratio

Alberta minimum 3

Question 2

Over 13 SEER uses what valve

Answer 2

TXV

Question 3

Hear pump needs ether or valves

Answer 3

2 metering devices that check valves

Bi flow TXV w internal check valve

Question 4

What special drier does a heat pump need

Answer 4

Bi directional

Question 5

Heat pump has what special valve

Answer 5

4 way

Question 6

Estimate for sizing a condensing unit

Answer 6

Divide total square feet by 600ft2 per ton

For domestic

Question 7

Is the use of twisted pair wire due low voltage control wire prohibited

Answer 7

Yes

Question 8

How many cfm per ton of cooling

Answer 8

400

Question 9

Tx loses charge?

Answer 9

Closes

Question 10

Tx spring breaks

Answer 10

Full open

Question 11

Indexer is part of what

Answer 11

Stepper motor

Question 12

Mop?

Answer 12

Maximum operating pressure

Question 13

Tons of refrigeration

Answer 13

288000 per day
12000 per hour
200 per day

Question 14

Fusion=

Answer 14

Melting

Question 15

Adjustable office is used where

Answer 15

Large chillers

Question 16

Metering device to reverse flow is called

Answer 16

Piston metering device or actuator

Question 17

A further decrease in pressure causing valve to leave a liquid is called

Answer 17

Bubble point

Question 18

Aev controls?

Answer 18

Minimum evaporator pressure

More spring=more flow

Question 19

Where is tv bulb installed larger than 3/4

Answer 19

4 or 6

Question 20

Tx Temp ranged

Answer 20

High 15-20
Med 8-10
Low 6-8
X low 4-6
F