Damper - Study guides, Class notes & Summaries

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 correct answers B 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 correct answers D Single wall vent connectors: A. may pass through floors, ceilings or roofs provided a metal thimble is used B...

Gas Fitter 2 Practice Test With Verified Solutions 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 B 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 D Single wall vent connectors: A. may pass through floors, ceilings or roofs provided ...

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 - Answer-B 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 - Answer-D Single wall vent connectors: A. may pass through floors, ceilings or roofs provided a metal thimble is used B. may pass throug...

HVAC journeyman prep test Exam Guide 2024 Questions and Answers A listed smoke damper designed to resist the passage of smoke shall be provided at each point in a duct or air transfer opening penetrates a: (A)smoke barrier wall (B)fire rated wall (C)interior wall (D)corridor wall - CORRECT ANSWER-Corridor wall (IMC 607.5.4) Flexible air duct may be what length? (A)10' (B)2' (C)14' (D)6' - CORRECT ANSWER14' (IMC 603.6.1.1) The maximum vertical distance between the front lower lip...

Steering and suspension Practice Questions and Answers Technician A says that all automotive coil springs have the same number of coils. Technician B says that coil spring spacers can cause damage to the spring. Which technician is correct? - Answer-Technician B only Technician A says that compression of a vehicle spring is called jounce. Technician B says that extending the vehicle spring is called rebound. Which technician is correct? - Answer-Both technicians Technician A says that a...

CDC 3E151: Volume 2. HVAC/R Fundamentals Questions with Certified Solutions (201) What affect will dust on fan blades have on heat transfer? It will reduce heat transfer (201) Where do you view the rotation and discharge of a centrifugal fan? On the drive side (201) Why are vanes used in the vane axial fan? To straighten out the spiraling motion of the air (201) What will allow a sheave to be used on different diameter shafts? Bushings (201) Where will the classic V-belts ( A...

COMPRESSORS UNIT 23 EXAM 1 QUESTIONS WITH COMPLETE SOLUTIONS Purpose of Economizer - Answer-Reduces flash gas by having a 2 stage pressure drop through float section Capacity control of centrifugal compressors - Answer-Speed control Butterfly damper Variable inlet vanes Compression factors that affect efficiency - Answer-piston/compressor displacement suction/discharge valves number of cylinders clearance pocket (size) Speed Suction/discharge pressures Types of refrigerant used...

HVAC journeyman prep test Correct 100%(Scored A+) A listed smoke damper designed to resist the passage of smoke shall be provided at each point in a duct or air transfer opening penetrates a: (A)smoke barrier wall (B)fire rated wall (C)interior wall (D)corridor wall - ANSWER Corridor wall (IMC 607.5.4) Flexible air duct may be what length? (A)10' (B)2' (C)14' (D)6' - ANSWER 14' (IMC 603.6.1.1) The maximum vertical distance between the front lower lip of a canopy Type 1 hood and th...

Professional Home Inspector Exam NHIE / TREC Questions and Answers Rated A+ The inspector is not required to determine ____ ___ of any system or component. -Years of age -Life expectancy -Make model Horizontal waste pipe should slope ____ inch per foot 1/4" per foot if < 3 inch pipe. 1/8" per foot if > or = to 3 inch pipe Drip screed Also called weep screed. Used at the base/bottom of stucco walls to release moisture. Pressure Vacuum Breaker (PVB) Used for Backflow...

The inspector is not required to determine ____ ___ of any system or component. - Answer- -Years of age -Life expectancy -Make model Horizontal waste pipe should slope ____ inch per foot - Answer- 1/4" per foot if < 3 inch pipe. 1/8" per foot if > or = to 3 inch pipe Drip screed - Answer- Also called weep screed. Used at the base/bottom of stucco walls to release moisture. Pressure Vacuum Breaker (PVB) - Answer- Used for Backflow Prevention. Lawn Irrigation systems: install...