TQ Questions

Question 1

How do you reverse the blower motor ?

Answer 1

Internal leads

Question 2

How far away does a RTU have to be from the edge of a roof ?

Answer 2

2 m or 6 Ft

Question 3

Grade of vent connector?

Answer 3

1/4”

Question 4

What method of development is a reducing elbow?

Answer 4

Triangulation

Question 5

How many millivolts does a thermocouple produce on its own?

Answer 5

5 millivolts

Question 6

What does backdraft do?

Answer 6

Reverse the flow of the vent

Question 7

What’s underneath the flashing?

Answer 7

Empty space?

Question 8

Boyles law

Answer 8

Temperature constant pressure increases

Question 9

2 elements combine together?

Answer 9

Compound

Question 10

100mbh furnace installed on
2000-4500 elvation, calculate derate

Answer 10

90MBH

Question 11

Why do mid efficient furnaces give off more heat as compared to natural draft furnaces?

Answer 11

Extract more heat from flue gas

Question 12

LEL and UEL for propane

Answer 12

2-10

Question 13

Steam boiler operating controls are wired in?

Answer 13

Series and series

Question 14

24v circuit class?

Answer 14

Class 2

Question 15

Common and cheap method of heating?

Answer 15

Radiant heating

Question 16

Leak limiting device for NG?

Answer 16

2.5 CuFt

Question 17

2 Factors that effect the state in which matter exist

Answer 17

Temperature and pressure

Question 18

From picture what two things turn the blower fan on?

Answer 18

Relay and fan control.

Question 19

Solution to check leaks on pipe

Answer 19

Soapy water

Question 20

Setting of heat anticipator?

Answer 20

Stamped on the gas valve

Question 21

Hammer used to stretch the flanges

Answer 21

Riveting hammer

Question 22

Common voltage used in furnaces on secondary side?

Answer 22

24V