Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
44 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
what kind of pressure do category #1 appliances deal with? |
non-positive (negative) |
|
|
|
what is the annual efficiency of a category #1 appliance? |
below 83% |
|
|
|
what kind of pressure do category #2 appliances deal with? |
non-positive (negative) |
|
|
|
what is the annual efficiency of a category #2 appliance? |
above 83% |
|
|
|
what kind of pressure do category #3 appliances deal with? |
positive pressure |
|
|
|
what is the annual efficiency of category #3 appliances? |
below 83% |
|
|
|
what kind of pressure do category #4 appliances deal with? |
positive pressure |
|
|
|
what is the annual efficiency of a category #4 appliance? |
above 83% |
|
|
|
what is the minimum clearance to serve an appliance? |
24" |
|
|
|
what is the minimum access opening (hatch) for an appliance located in a crawl space |
24" x 30" |
|
|
|
what is the minimum opening (passagway) after the access panel? |
36" x 36" |
|
|
|
when are you allowed to remove a bypass? |
NEVER |
|
|
|
when an appliance has been in a fire or flood, what action must take place? |
they must be re inspected by authority having jurisdiction |
|
|
|
how high must appliances be off the ground in a garage? and why? |
18" flammable vapors are heavier than air so they'll sit on the floor. |
|
|
|
what action must take place if a heat exchanger becomes cracked or damaged in a residence? |
must be replaced. cannot fix. |
|
|
|
what are the two types of tests you can conduct on a crack heat exchanger? |
-smoke test -sulphure test |
|
|
|
remember |
|
|
|
what is the clearance for boilers? |
18" for the top, sides, and rear 48" for the front. |
|
|
|
when can you connect an exhaust duct to a vent connector? |
NEVER |
|
|
|
what is the minimum clearances for a domestic type clothes washer? |
6" all sides 24" for the front |
|
|
|
what is the minimum clearance for counter top appliances? (cook stove) |
6" all sides 36" from the top of surface |
|
|
|
what is the minimum clearance for combustibles on a mid-efficient furnace? |
1" above 6" all sides 24" front |
|
|
|
where can floor furnaces be installed? and why? |
-they are NOT to be installed. -because dirt and dust can get inside the furnace. |
|
|
|
what is a nickname for a down flow furnace? |
counterflow |
|
|
|
what type of vent is used for wall furnaces? (recessed heaters) |
BW |
|
|
|
an unvented infrared heater cannot be installed where? |
-stairwells -exit halls |
|
|
|
what clearance must an unvented infrared heater be from exit doors? |
8' |
|
|
|
infrared heaters that are installed in an aircraft hangers must be a minimum of ... from the floor |
8' |
|
|
|
what is the minimum clearance of combustibles for a circulating room heater? |
36" above 6 " for all sides 24" for the front |
|
|
|
what is the clearance of combustibles for a swimming pool heater? |
18" all the way around including top 48" for the front
|
same as boiler |
|
|
swimming pool heaters must have the flue discharge atleast.....ft from any building opening |
10 ft |
|
|
|
a unit heater in a garage must be how far above the floor level? |
8' |
|
|
|
when can a clearence for a unit heater in a garage, be cut in half if this action takes place? |
a substantial guard in installed (Post) |
|
|
|
what is the minimum clearence for a unit heater located in a garage? |
18" all the way around |
|
|
|
hot plates may not be installed where? |
a bedroom |
|
|
|
what is the minimum clearence of combustibles for hot plates? |
6" for all sides 30" above |
|
|
|
what is the clearence of combustables for a pendent fixture? |
18" above 5" for all sides |
|
|
|
in a repair garage (service station) how far above ground must an appliance be? |
4 1/2 ft |
|
|
|
what type of gas hose must an infra-red heater use? |
type 1 gas hose |
|
|
|
what length must a type 1 gas hose connected to an infra-red heater be ? |
36" + or - 6" |
|
|
|
what is the minimum/maximum length of a type 1 gas hose ? |
30" - 42" |
plus or minus 6 ft |
|
|
when a gas range, refrigerator or clothes dryer is connected to a gas line, what is the maximum length of the flex connector? |
6 ft |
|
|
|
suspended appliance or decorative appliances (gas fire places) may be connected to a flex connector, what is the maximum length? |
2 ft |
|
|
|
what is the maximum temperature for a limit control on a forced air furnace? |
250°F |
|
