Domestic Gas Fired Appliances Flashcards
This category consists of draft hood, equipped appliances and fan assisted appliances for venting into type B vents
Category one appliances
What is the temperature of the venting pipe on category on the website?
At least 140 Fahrenheit or 60 Celsius above its dewpoint of 160 Fahrenheit or 71 Celsius for 80% efficiency
This appliance has over 83% efficiency
Category two appliance
This appliance operates with a positive static pressure and flu loss no less than 17%
Category three appliance
The appliance operates with a positive vent static and the flu loss of less than 17%
Condensing high-efficiency
Category four appliance
Before gas fire appliances are installed in a building. The static pressure in the building must be assisted. What are these value?
Building must not be more than 5 Pa lower than outdoors
Temporary installation of a furnace during construction would be called what
Postponement of the code
Whenever you install a gas fireplace appliance, what are you responsible for to the end user?
Proper operation, required maintenance and service of the appliance
What is the minimum clearance required to service an appliance?
24 inches
Where are the places in the crawlspace? How big must the access opening be?
24” x 30”
How big must the crawlspace be to service an appliance?
And it’s unobstructed of at least 36” x 36” x 3 hole
Base for an appliance on a concrete pad outdoors must be how big
At least 6 inches larger than the appliance all the way around and 2 inches above ground level
High altitude installation how much reduction for 2000 to 4500 feet
10%
High altitude installation how much reduction for 4500 to 5500 feet
14%
Higher altitude installation how much reduction for 5500 to 6500 feet
18%
