Heating

Question 1

Thermocouple open cct test voltage

Answer 1

17-32mVDC

Question 2

Thermocouple closed cct test voltage

Answer 2

8-17mVDC

Question 3

Pilot drop out voltage and time

Answer 3

2-6mV

90 seconds

Question 4

2 types of burners

Answer 4

In shot and up shot

Question 5

3 types of burner heads

Answer 5

Non aerated
Post aerated
Aerated

Question 6

Air to fuel burning ratio CH4

Answer 6

10:1

Question 7

2 purposes of pilots

Answer 7

Light burners and flame safety

Question 8

4 types of gas regulators

Answer 8

Service
System
Appliance
Servo

Question 9

Pvc White 636 temp

Answer 9

65 C

Question 10

Pvc 636 grey temp

Answer 10

90 C

Question 11

B vent temp

Answer 11

471

Question 12

Gas vent distance from fresh air intake

Answer 12

10 ft

Question 13

Gas vent distance from ignition source and dryer vent

Answer 13

3 ft

Question 14

of stages for propane regulator

Answer 14

2

Question 15

Oil flame safety method

Answer 15

Light

Question 16

B vent rise per horizontal foot

Answer 16

1/4”

Question 17

Flame sensor in flame

Answer 17

3/8”-1/2”

Question 18

Type of oil in residential

Answer 18

2

Question 19

BTU/kw?

Answer 19

3412

Question 20

Nat gas spec gravity

Answer 20

.6

Question 21

Propane spec gravity

Answer 21

1.5

Question 22

% per 1000ft derate for gas

Answer 22

4

Question 23

Expanding pilot

Answer 23

Always lit, increases during call for heat

Question 24

Intermittent vs interrupted pilot

Answer 24

Both lit during call for heat, interrupted shuts off after successful ignition