MEP 1 - Mechanical – Houston QUESTIONS AND ANSWERS 100%ACCURATE.
DX - - ✅✅direct expansion
In a DX system, ___ moves back and forth between the CU and AHU. - ✅✅refrigerant
Energy is measured in ___. - ✅✅Btu
1 ton = - ✅✅12000 Btu/h
1 ton cools about ___ SF. - ✅✅400
CFM - - ✅✅cubic feet per minute
FPM - - ✅✅feet per minute
SMACNA - - ✅✅Sheet Metal and Air Conditioning Contractors National Association
For duct construction, refer to ____ and ____. - ✅✅- International Mechanical Code
- SMACNA
Sheet metal ducts need to be ___. - ✅✅insulated
Ductboard is made out of ___. - ✅✅fiberglass
Ductboard is used in ___. - ✅✅residential
Flex duct should only be used in ___. - ✅✅short sections
trunk - - ✅✅main duct
tap - - ✅✅comes out of trunk
branch - - ✅✅off of a tap
reduction - - ✅✅lessens the size of the ductwork
___ goes from larger to smaller. - ✅✅Supply ductwork
Square duct is cheaper because of ___. - ✅✅minimal surface area
, 400 CFM = - ✅✅1 ton
250 Btu/h per ___ - ✅✅person
larger number in sheet metal = - ✅✅thinner
AHU - - ✅✅air handling unit
If there is no air blowing the ___ in your AHU. - ✅✅fan might be out
If water is dripping, your AHU is ___. - ✅✅working
If your air is not getting cold, something is wrong with the ____. - ✅✅refrigerant
CU - - ✅✅condensing unit
The CU ___ back and forth to the AHU. - ✅✅pumps refrigerant
A ___ is larger and should be insulated. - ✅✅suction line
A ___ is small and warm. - ✅✅liquid line
Suction lines carries refrigerant to the ___. - ✅✅CU
Liquid lines carry refrigerant to the ___. - ✅✅AHU
If there is no air blowing, the ___ in your CU. - ✅✅the fan might be out
If there is water dripping from your CU, ___. - ✅✅it is working
If the air inside the building is not getting cold, ___ in your CU. - ✅✅the coils might be dirty
Package DX systems have to sit on a ___. - ✅✅curb or pad
RTU - - ✅✅roof top unit
___ contain an AHU and CU in one unit. - ✅✅Package DX systems
Package DX systems are usually ___. - ✅✅cheap
Package DX systems are good buildings that <= ___. - ✅✅3 stories
TAB - - ✅✅testing and balancing
DX - - ✅✅direct expansion
In a DX system, ___ moves back and forth between the CU and AHU. - ✅✅refrigerant
Energy is measured in ___. - ✅✅Btu
1 ton = - ✅✅12000 Btu/h
1 ton cools about ___ SF. - ✅✅400
CFM - - ✅✅cubic feet per minute
FPM - - ✅✅feet per minute
SMACNA - - ✅✅Sheet Metal and Air Conditioning Contractors National Association
For duct construction, refer to ____ and ____. - ✅✅- International Mechanical Code
- SMACNA
Sheet metal ducts need to be ___. - ✅✅insulated
Ductboard is made out of ___. - ✅✅fiberglass
Ductboard is used in ___. - ✅✅residential
Flex duct should only be used in ___. - ✅✅short sections
trunk - - ✅✅main duct
tap - - ✅✅comes out of trunk
branch - - ✅✅off of a tap
reduction - - ✅✅lessens the size of the ductwork
___ goes from larger to smaller. - ✅✅Supply ductwork
Square duct is cheaper because of ___. - ✅✅minimal surface area
, 400 CFM = - ✅✅1 ton
250 Btu/h per ___ - ✅✅person
larger number in sheet metal = - ✅✅thinner
AHU - - ✅✅air handling unit
If there is no air blowing the ___ in your AHU. - ✅✅fan might be out
If water is dripping, your AHU is ___. - ✅✅working
If your air is not getting cold, something is wrong with the ____. - ✅✅refrigerant
CU - - ✅✅condensing unit
The CU ___ back and forth to the AHU. - ✅✅pumps refrigerant
A ___ is larger and should be insulated. - ✅✅suction line
A ___ is small and warm. - ✅✅liquid line
Suction lines carries refrigerant to the ___. - ✅✅CU
Liquid lines carry refrigerant to the ___. - ✅✅AHU
If there is no air blowing, the ___ in your CU. - ✅✅the fan might be out
If there is water dripping from your CU, ___. - ✅✅it is working
If the air inside the building is not getting cold, ___ in your CU. - ✅✅the coils might be dirty
Package DX systems have to sit on a ___. - ✅✅curb or pad
RTU - - ✅✅roof top unit
___ contain an AHU and CU in one unit. - ✅✅Package DX systems
Package DX systems are usually ___. - ✅✅cheap
Package DX systems are good buildings that <= ___. - ✅✅3 stories
TAB - - ✅✅testing and balancing
