Topic Quiz, 4-Hour HVAC

Question 1

A forced air furnace, according to the IRC (International Residential Code) furnace room passage way should be a minimum of _____ wide?

a. 15’’
b. 24’’
c. 15’’
d. 20’’

Answer 1

b. 24’’

[IRC M1305.1.3]

Question 2

What is the maximum distance a furnace in the attic should be from the access opening?

a. 16’
b. 8’
c. 12’
d. 20’

Answer 2

d. 20’

[IRC M1305.1.3]

Question 3

The opening or door to a furnace room shall be large enough to permit the removal of the largest piece of equipment, but not less than _____ in width.

a. 20’’
b. 24’’
c. 30’’
d. 36’’

Answer 3

b. 24’’

[IRC M1305.1.2]

Question 4

Which of the following is NOT true for a Type-B gas vent?

a. Type-B vents shall terminate not less than 1’ above the roof.
b. Type-B vents shall conform to UL-441
c. Type-B vents are permitted for use with oil burning appliances.
d. Type-B vents shall NOT be less than 8’ from a vertical wall or similar obstruction.

Answer 4

c. Type-B vents are permitted for use with oil burning appliances.
{IRC TABLE M1804.1]

(R202 Definitions: TYPE L-VENT. A listed and labeled vent conforming to UL 641 for venting oil-burning appliances listed for use with Type L vents or with gas appliances listed for use with Type B vents.)

Question 5

How far must a forced air vent or gas flue terminate below a horizontal window?

a. 2’
b. 4’
c. 6’
d. 8’

Answer 5

b. 4’

[IRC G2427.8 (2)]

Question 6

You cannot take return air from a: ______

a. Bedroom
b. Kitchen
c. Dining room
d. Hallway

Answer 6

b. Kitchen

[IRC M1602.2 (4) & G2442.4, Exc-6]

Question 7

What is the differential for A/C?

a. 10 deg
b. 20 deg
c. 25 deg
d. 30 deg

Answer 7

b. 20 deg

Per Principles of of Home Inspection, Systems & Standards, 3rd Ed, Chp 12, 15-20 degrees

Question 8

Access to A/C equipment in the attic shall not be smaller than:

a. 22’’ X 36’’
b. 22’’ X 30’’
c. 22’’ X 24’’
d. 18’’ X 24’’

Answer 8

b. 22’’ X 30’’

[IRC M1305.1.3]

Question 9

What is the location of the ID-Plate on an A/C unit?

a. On the wall
b. Inside the evaporative coil housing
c. On the condensing unit
d. Next to the electrical cutoff

Answer 9

c. On the condensing unit (outside unit)

Question 10

A device used for reducing air temperatures by the process of evaporating water into an airstream.

a. Evaporative cooler
b. Water Heater
c. Bathroom exhaust
d. A/C condenser

Answer 10

a. Evaporative cooler

[IRC R202 Definitions]

Question 11

Evaporative cooling equipment & appliances shall comply with:

a. UL 1995
b. According to the manufacturers instructions
c. On level platforms
d. ALL OF THE ABOVE

Answer 11

d. ALL OF THE ABOVE

[IRC M1413.1 (1-5)]

Question 12

A receptacle outlet shall NOT be required for the servicing of evaporative coolers (TRUE/FALSE)

Answer 12

TRUE

[IRC E3901.12 Exception]

Question 13

[SCENARIO]
When the space between studs in walls or partitions is used as a duct for circulating air, the portions of such space used shall be cut off from all remaining un-used portions of the stud space by: _______

a. Any type of air-tight material
b. Tapes, mastic or gasketing
c. Only non-combustible materials
d. Tight-fitting sheet metal or 1 1/2’’ thick wood stops

Answer 13

d. Tight-fitting sheet metal or 1 1/2’’ thick would stops

[IRC M1601.1.1 (7)]