ICA Module 2 Section 3 Heating Flashcards
NFPA stands for:
National Fire Proof Association
Forced air combustion heating is the least common. T/F
False-is the most common
High efficiency furnaces are completely sealed. T/F
True
Forced Air Efficiencies:
Low=
Mid=
High=
Low= open burners, old units, natural draft (60-65% efficient)
Mid= induced draft from small fan (80-83% efficient)
High= usually sealed chambers (90% efficient)
Forced air types of furnaces include:
Up flow, Down flow (counter flow), Horizontal flow
Gas fired units use B-Vent T/F
True
Oil fired units use L-Vent T/F
True
Furnace Clearances:
How far to service:
How far from hatch in attic:
Walkway to unit:
Platform size in front of service side:
How far to service: 30”
How far from hatch in attic: 20’
Walkway to unit: 24”
Platform size in front of service side: 30”x30”
When using outdoor air a furnace door must have ___ small opening.
1
Return air intake grille must be ______ feet from combustibles.
10
Vent connectors rise ____” per foot
1/4”
Larger vent connectors should be below smaller where there are 2 vent connectors. T/F
True
Vent Connector Clearances from Combustibles:
Single Wall Vent=
Double Wall Vent=
Single= 6”
Double Wall B Vent = 1”
B Vent has dimples & single wall does not. T/F
True
White deposits on vent tubing is caused by:
condensation
Humidifiers are excluded for inspectors. T/F
True
Inspectors must report furnaces that are near the end of life, which is about 30 years. T/F
False. Inspectors must report furnaces that are near the end of life, which is about 20 years.
A yellow flame means ____ combustion.
Incomplete
Types of Ductwork include:
Steel (most common), Rigid Fiberglass Board, Flex Duct, Plastic, Asbestos
Boilers generally last:
40-60 years
Gravity boilers work with no moving parts. T/F
True
Transite is an ______ material.
asbestos
3 types of boilers:
Circulated, Gravity, Steam
Glass tubes on side of boiler means it is a steam boiler, and if there is a pump, it’s a circulated boiler. T/F
True
Hartfuel loops goes together with a steam boiler (2 peas in a pod) T/F
True
Direct Vent Space Heater Clearances:
Top=
Both Sides=
Clear in from?
Top= 36”
Both Sides= 12”
Clear in from?= 2’
A wall heater must be ___ inches away from the edge of a door.
12”
Space heating are single room heaters, and may be:
propane, gas, electric
Different Fireplaces include:
alcohol gel, gas logs, gas starting, wood
Wood stoves may be:
stand alone, hearth mount, inserts
Pellet stoves burn:
wheat seeds, cherry pits, most burn compression wood, corn pellets
Wood stoves cause over 100 fires annually. T/F
False 5,000
Stoves should sit on a non-combustible hearth and extend 18” out, 8” on sides & rear. T/F
True
Single wall stove pipe needs ___ inch clearance all the way around.
8”
Double wall stove needs ___inch clearance al the way around.
6”
How much clearance is required from the top of a stove?
5 feet
Gas fireplaces & inserts require B-Vent with 1” clearance all around. T/F
True
Wood fireplaces & stoves require a vent __” clearance all around.
2
Pellet stoves require PL vent 3” clearance all around. T/F
True
