Testing And Troubleshooting

Question 1

Describe combustion efficiency

Answer 1

How well the appliance converts fuel into useable heat

Question 2

Describe steady state efficiency

Answer 2

Is sometimes used to describe combustion efficiency or running efficiency

Question 3

To determine study state efficiency, how is it done?

Answer 3

Output divided by input multiplied by 100

Question 4

Annual fuel utilization efficiency is a measurement of what

Answer 4

Actual heat be delivered to the house and fuel losses

Question 5

How is the efficiency appliance done?

Answer 5

Volume of providing dial divided by time of one revolution times 3600 seconds

Question 6

How to convert the amount of gas used into BTU

Answer 6

Multiply cubic feet of gas by calorific value

Question 7

If the furnace is running properly. What voltage should you have on each side of the limit switch?

Answer 7

24v

Question 8

Once a flame sensor gets pitted are burnt look you should

Answer 8

Change it

Question 9

Two types of gas valves

Answer 9

Solenoid and diaphragm

Question 10

If coil on gas valve reads infinite what should be done zero ohms

Answer 10

Replace gas valve

Question 11

Secondary windings on transformer reading infinite is usually due to

Answer 11

Short in the control circuit or overloading transformer

Question 12

Reading zero ohms on inducer motor means what

Answer 12

Short circuit

Question 13

Low or high o2 levels indicate what

Answer 13

Insufficient combustion air

Question 14

Blower assembly should be checked after installation for what

Answer 14

Shipping bolts

Question 15

How is checking for gas leaks done

Answer 15

Test dial
Soapy water
Leak detector

Question 16

How long is a test dial done

Answer 16

10 min

Question 17

All venting systems of gas appliance needs to meet ?

Answer 17

Installing of manufacturing

Question 18

Furnace and accessories must be powered when calibrating. What on thermostat

Answer 18

Heat anticipator