Gas Technician G2 License Certification Exam
Questions and answers with 100% Complete
Solutions | verified &updated 2024
A Fan Control is a: - ✔✔Normally Open Temperature Control that Closes
on Temperature Rise
As the temperature of a Thermistor increases, the Current Flow through it... -
✔✔Increases
A Thermostat with a Single Mercury Bulb which controls a Single Stage Heat,
Single Stage Cool unit is a... control - ✔✔SPDT (Single Pole Double Throw)
A Thermostat serving a unit which has separate Heating and Cooling Control
transformers and has One Stage of Heating and One Stage of Cooling is a... control
- ✔✔DPDT (Double Pole Double Throw)
,Separate Heating and Cooling, therefore Double Pole and Double Stage for
Heating and Cooling therefore Double Throw. Which of the following heating
systems would be expected to cause problems due to the "Distribution Effect"? -
✔✔A Forced Air Furnace with a return air opening in the furnace room
The recommended range of Relative Humidity in a house to control Indoor Air
Contaminates, increase comfort, and maintain the structural integrity of the
house is: - ✔✔30% - 50%
From the following list, which action will have the greatest effect on reducing
mold growth in a house? - ✔✔Covering earthen floors and open water surfaces
(stumps, aquariums etc.) Open stumps and earth floors and will introduce a ton
of humidity into the house
After a Direct Vent Radiant Heating System is installed in a new house, the
customer complains that, "The Walls and Windows are wet". What is the most
,reasonable response? - ✔✔Recommend the installation of a
Mechanical Ventilation System
Which is the most common cause of Flue Gas Spillage from gas appliances? -
✔✔Negative Air Pressure caused by Mechanical Systems
There are two appliances in a 10ft x 10ft x 20ft structure which has an
equivalent leakage area greater than 0.05 square meters. A furnace has a draft
hood and input of 50,000 BTUH. The second appliance has an input of 75,000
BTUH, and
does not have a draft hood. The required combustion air opening size is: -
✔✔9 Square Inches (5800 mm2)
Air enters a House through a process called... - ✔✔Infiltration
Two Hot Water Boilers each firing at 750,000 BTUH, 1 Water Heater firing at
270,000 BTUH and 1 Water Heater firing at 30,000 BTUH. These appliances are
, contained in a room with a cutout and a grill with 80% free area. What size in
square inches should the grill be? - ✔✔250 Square Inches
What is the minimum size of a Combustion Air Opening from outdoors for an
appliance without a Draft Hood and having an input of 125,000 BTUH installed in
a structure that has a continuous Vapour Barrier and has an equivalent leakage
area of 0.05 m2 at a differential pressure of 10 parcels and dimensions of 10ft x
10ft x 20ft? - ✔✔9 Square Inches
What is the minimum size of the combustion air opening from outdoors for an
appliance without a Draft Hood and with an input of 50,000 BTUH installed installed
in a structure which has an equivalent leakage area greater than 0.05 m2
and dimensions of 10ft x 10ft x 20ft? - ✔✔0 Square Inches
If the Relative Humidity of a room is increased, the Temperature in the room must
be increase to maintain the same level of comfort. - ✔✔False
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