AIR
Combustion air can be separated into 2 category's name these as well as the % of each ?
What is Primary air (33.33%) and secondary air (66.66%).
At what point of the job must you obtain a gas permit?
What is before any work begins.
A high efficiency appliance uses what type of burner ?
What is a Mechanical burner?
How much CO2 is produced from a propane appliance burning 30 000 ft3/hr?
What is 90 000 ft3 ? (Gas flow rate X 3)
A gas appliance ignition system that uses a small flame, not always present, to ignite the main burner?
What is an Intermittent Pilot?
The theoretical perfect combustion formula for Natural gas prior to ignition is CH4+2O2+8N2 what is the chemical formula after perfect combustion?
What is CO2+2H2O+8N2+Heat.
An independent, self funded organization that oversees the safe installation and operation of technical systems and equipment in our province ?
What is TSBC. (Technical Safety B.C.)
Type of appliance that takes all of its combustion air from outside, as well as discharges all its flue gases to outdoors?
What is a Direct Vented appliance ?
An air to air heat exchanger used to pre heat a buildings incoming make up air with the exiting ventilation air?
What is a Heat recovery ventilator.
When testing a circuit for voltage how is the meter connected?
What is in parallel.
A draft created by a mechanical device located downstream of the combustion chamber ?
What is Induced.
Section 3 of the B149.1 gas code?
What is Definitions.
Gas fireplaces classified for heating must have a minimum efficiency rating of ?
What is 50%.
A vent pipe and a make up air pipe that combine to make 1 single pipe in pipe?
What is Coaxial.
What is a prerequisite when testing for resistance across a load ?
What is that the circuit is de-energized.
Air entering a building envelope?
What is Infiltration .
Section of the B149.1 Gas cod that provides requirements for the installation of specific types of appliances ?
What is section 7.
A condensing furnace has a unique feature that is not included in a non condensing model?
What is a secondary heat exchanger.
Sometimes used to overcome venting problems such as extra long vents, excess negative pressures or an improper venting design?
What is a Power Venter.
Gas flow rate for a propane appliance with an input of 150 000 BTU's?
What is 60 ft3/Hr ( 150 000 / 2500 cv ).
Air used above and beyond the perfect combustion formula to ensure complete combustion?
What is Excess air.
Gas contractors in BC must provide a performance bond to do gas fitting work. How much?
What is $10,000.
What is the minimum efficiency required for all new gas furnaces in Canada?
What is 90%?
The natural draft created because the hot flue gases of combustion are lighter than the ambient cooler air, creating an upward movement of combustion gases through the venting?
What is Stack effect.
If a building contains any natural draft appliances the building depressurization must be limited to ?
5 Pa to prevent the risk of backdrafting.