Gas Fitter 2 Practice Test Questions And Answers 100% Verified

Gas Fitter 2 Practice Test Questions And Answers 100% Verified A room heater installed in either a sleeping area or public area shall be: A. direct vent only B. equipped with a regulator C. equipped with a fan D. equipped with an on / off switch on the wall - answerB What type of vent must be used when the vent of a wall furnace will be concealed in a partition wall? A. B vent B. L vent C. BH vent D. BW vent - answerD Single wall vent connectors: A. may pass through floors, ceilings or roofs provided a metal thimble is used B. may pass through floors, ceilings or roofs provided the required minimum distance from combustible material is maintained C. may pass through floors, ceilings or roofs provided they are insulated D. shall not pass through floors, ceilings or roofs - answerD BW vent shall be used only with an approved: A. decorative appliance B. down flow furnace C. revertible flue boiler D. recessed wall furnace - answerD What must be done during the installation of a gas log fireplace? A. Make sure there is a metal mesh screen in front of the fireplace B. Secure the chimney damper in the open position C. Install a pressure regulator D. Install a metal chimney liner - answerB When can a certified hose be used to connect a construction heater to temporary piping? A. Only if a lever handle shut off valve is installed upstream of the hose B. Only if the hose is 15 feet long C. Never - answerA Which of the following is acceptable when a fireplace insert is installed? A. A metal chimney linear B. The existing fireplace flue C. BW vent D. A tile lined fireplace flue? - answerA An unvented infra-red heater can be installed in ________ application A. A warehouse B. A commercial building C. An industrial building D. All of the above - answerD Dirt pockets are required on: A. Decorative appliances B. Gas logs C. Room heaters D. None of the available choices - answerD What diameter and length of a dirt pocket is required when a drop line is 3-inch diameter? A. 3 inch diameter by 3 inches long B. 1 inch diameter by 3 inches long C. 3/4 inch diameter by 3 inches long D. 2 inch diameter by 3 inches long - answerD What type of room heater maybe installed in a bathroom? A. Natural draft B. Direct fired C. Forced draft D. Direct vent - answerD What safety control protects a steam boiler if the condensate pump fails to return water to the boiler? A. High pressure limit control B. Low pressure limit control C. Flame safeguard control D. Low water cut off - answerD The relief valve for a residential low-pressure hot water boiler system should be? A. 14.7 psia B. 15 psia C. 30 psig D. 30 psia - answerC A backflow prevent used in a boiler system should be located in the: A. Over flow line connected to the drain B. Return line close to the boiler C. 1/4" line connecting the boiler and cushion tank D. Make up water line to the system - answerB Automatic chlorinators must be installed: A. upstream of the heater B. downstream of the heater C. upstream of the filter D. downstream of the filter - answerB On seasonal start up, a pool heater should run: A. intermittently B. continuously for 24 hours C. continuously until the thermostat is satisfied D. one hour on and one hour off until the thermostat is satisfied - answerC Before lighting a burner in a steam boiler, ensure that: A. there is water in the boiler B. the temperature controller is set properly C. the main burner test firing valve is turned on D. the safety valves are open - answerA The recommended water temperature setting from a mixing valve to the domestic water system in combination heating systems that employ oil-fired water heaters for heating potable water and for space heating is: A. 43°C (110°F) B. 49°C to 54°C (120°F to 130°F) C. 60°C to 66°C (140°F to 150°F) D. 83°C (180°F) - answerB An inverted sensor (measures water level) can be found operating what type of appliance? A. Hot water boiler B. Steam water boiler C. Domestic hot water storage tank D. Domestic potable hot water tank - answerD A backflow prevent used in a hydronic heating system is used to: A. Keep hot water from entering the cold water system B. Hold the pressure on the system during a temporary shutdown to prevent the entry of air C. Prevent the heating water from circulating the wrong way in the system