HVAC Contractor prep Test 2
A direct vented appliance rated at 50,000 BTU/h will be positioned so that a minimal clearance
of_______ is maintained among vent terminals in from any openings through which combustion
products into the building. - ANS-9 inches
A grain is a unit of weight same to _______, used to indicate the amount of moisture within the
air. - ANS-1/7000 lb
A warm water boiler adjustment is crucial to keep away from damage or scolding. A ordinary
putting for the boiler water could be between the temperature variety of? - ANS-140-a hundred
and sixty ranges F
A mechanical allow is needed for all of the following, besides ________? - ANS-A portable
cooling unit
A zero energy ingesting device could be one of the following: - ANS-Solid kingdom
(electromechanical) controller
According to the Air-conditioning and Refrigeration Contractor License Law, a Class A
contractors industrial trendy liability coverage coverage, have to be at least ________ in line
with incidence? - ANS-$300,000
According to the Code, smoke detectors will be mounted in go back air gadget with a layout
potential of at the least HOW MANY cubic ft consistent with minute of air float in the duct,
plenum, filters, air connections, or decontamination equipment and home equipment? -
ANS-2,000 CFM
According to the International Fuel Gas Code, ducts combustion air shall now not serve multiple
__________? - ANS-Appliance enclosure
According to the usual approach of calculation in the IFGC, what would be the required volume
in cubic feet of indoor combustion air be, given a one hundred,000 Btu/hr gas furnace is rated
with an annual gas utilization efficiency "AFUE" at eighty%? - ANS-four,000
According to the Texas contractor's enterprise reference guide which of the subsequent listed
under does now not require the license wide variety of the contractor? - ANS-Printed fabric,
newspaper ads, yellow web page ads, enterprise cards
According to the textbook Modern Refrigeration and Air Conditioning, A heat pump gadget
requires more refrigerant in cooling mode then in heating mode, therefore, the satisfactory
, manner to store this greater Refrigerant is to install an accumulator in which of the following? -
ANS-Suction line
According to the textbook Modern Refrigeration and Air Conditioning, Hermetic compressor
motor situations and preventative renovation techniques are dictated by way of different stages
of motor windings resistance measurements. Therefore, what preventive renovation is usually
recommended if the insulation resistant measures 60-one hundred Mega Ohms? - ANS-Change
filter out drier
According to the textbook Modern Refrigeration and Air Conditioning, The fundamental
standards that should be considered while sizing industrial refrigeration gadget refrigerant
traces does NOT encompass which of the following principles? - ANS-Insulation Type
According to the textbook cutting-edge refrigeration and air-conditioning, the location in role of a
TXV sensing bulb on the suction line relies upon on the tubing length, therefore, what's the
suitable mounting area of a TXV sensing bulb given that the suction line is three/four inch to
7/eight inch tubing length - ANS-Ten o' clock, or o' clock (10 or 2)
According to the Uniform Mechanical Code, and using the one permanent commencing
approach, the opening shall at once talk with the outdoors and shall have a minimum
unfastened place of which of the subsequent? - ANS-1 sq.In. Per three,000 Btu/h
According to the Uniform Mechanical Code, while gypsum merchandise are exposed in ducts or
plenums, the moisture content material will be managed so that the cloth is not adversely
affected, and air temperature will be confined to what MAXIMUM - ANS-fifty two C or one
hundred twenty five ranges F
After the gasoline piping has been assembled and connected to the appliance, the technician
ought to carry out a status strain check to test for leaks, however, which of the following
strategies is NOT suited? - ANS-Halide torch or an open flame
Air being conveyed from a warmness exchanger to an area used for human habitation is
defined as _________ air - ANS-Supply air
All hot water heating device will be supplied with________ securely fastened to the structure. -
ANS-An air enlargement tank
All refrigerant piping installations that incorporate greater than 6.6 lb of a refrigerant in structures
the usage of high-quality-displacement compressors shall NOT have forestall valves set up at
the ___________? - ANS-Inlet of every receiver
An oral or written settlement for creation alteration, or restore, of buildings, systems, or systems
is taken into consideration a _________? - ANS-Contract
A direct vented appliance rated at 50,000 BTU/h will be positioned so that a minimal clearance
of_______ is maintained among vent terminals in from any openings through which combustion
products into the building. - ANS-9 inches
A grain is a unit of weight same to _______, used to indicate the amount of moisture within the
air. - ANS-1/7000 lb
A warm water boiler adjustment is crucial to keep away from damage or scolding. A ordinary
putting for the boiler water could be between the temperature variety of? - ANS-140-a hundred
and sixty ranges F
A mechanical allow is needed for all of the following, besides ________? - ANS-A portable
cooling unit
A zero energy ingesting device could be one of the following: - ANS-Solid kingdom
(electromechanical) controller
According to the Air-conditioning and Refrigeration Contractor License Law, a Class A
contractors industrial trendy liability coverage coverage, have to be at least ________ in line
with incidence? - ANS-$300,000
According to the Code, smoke detectors will be mounted in go back air gadget with a layout
potential of at the least HOW MANY cubic ft consistent with minute of air float in the duct,
plenum, filters, air connections, or decontamination equipment and home equipment? -
ANS-2,000 CFM
According to the International Fuel Gas Code, ducts combustion air shall now not serve multiple
__________? - ANS-Appliance enclosure
According to the usual approach of calculation in the IFGC, what would be the required volume
in cubic feet of indoor combustion air be, given a one hundred,000 Btu/hr gas furnace is rated
with an annual gas utilization efficiency "AFUE" at eighty%? - ANS-four,000
According to the Texas contractor's enterprise reference guide which of the subsequent listed
under does now not require the license wide variety of the contractor? - ANS-Printed fabric,
newspaper ads, yellow web page ads, enterprise cards
According to the textbook Modern Refrigeration and Air Conditioning, A heat pump gadget
requires more refrigerant in cooling mode then in heating mode, therefore, the satisfactory
, manner to store this greater Refrigerant is to install an accumulator in which of the following? -
ANS-Suction line
According to the textbook Modern Refrigeration and Air Conditioning, Hermetic compressor
motor situations and preventative renovation techniques are dictated by way of different stages
of motor windings resistance measurements. Therefore, what preventive renovation is usually
recommended if the insulation resistant measures 60-one hundred Mega Ohms? - ANS-Change
filter out drier
According to the textbook Modern Refrigeration and Air Conditioning, The fundamental
standards that should be considered while sizing industrial refrigeration gadget refrigerant
traces does NOT encompass which of the following principles? - ANS-Insulation Type
According to the textbook cutting-edge refrigeration and air-conditioning, the location in role of a
TXV sensing bulb on the suction line relies upon on the tubing length, therefore, what's the
suitable mounting area of a TXV sensing bulb given that the suction line is three/four inch to
7/eight inch tubing length - ANS-Ten o' clock, or o' clock (10 or 2)
According to the Uniform Mechanical Code, and using the one permanent commencing
approach, the opening shall at once talk with the outdoors and shall have a minimum
unfastened place of which of the subsequent? - ANS-1 sq.In. Per three,000 Btu/h
According to the Uniform Mechanical Code, while gypsum merchandise are exposed in ducts or
plenums, the moisture content material will be managed so that the cloth is not adversely
affected, and air temperature will be confined to what MAXIMUM - ANS-fifty two C or one
hundred twenty five ranges F
After the gasoline piping has been assembled and connected to the appliance, the technician
ought to carry out a status strain check to test for leaks, however, which of the following
strategies is NOT suited? - ANS-Halide torch or an open flame
Air being conveyed from a warmness exchanger to an area used for human habitation is
defined as _________ air - ANS-Supply air
All hot water heating device will be supplied with________ securely fastened to the structure. -
ANS-An air enlargement tank
All refrigerant piping installations that incorporate greater than 6.6 lb of a refrigerant in structures
the usage of high-quality-displacement compressors shall NOT have forestall valves set up at
the ___________? - ANS-Inlet of every receiver
An oral or written settlement for creation alteration, or restore, of buildings, systems, or systems
is taken into consideration a _________? - ANS-Contract
