MD HVAC MASTERS EXAM SCRIPT
COMPREHENSIVE STUDY GUIDE
●● Can a 2x4 studding be used for plenum or return chases or duct
Answer: No
●● Appliance in a public garage should have a minimum clearance from
the floor
Answer: 8 feet
●● Duct insulation should have a smoked developed index of no more
than
Answer: 50
●● Duct insulation material should have a minimum flame spread rating
of
Answer: 25
●● What is the maximum temperature of gypsum board
Answer: 125 degrees Fahrenheit
●● What is the best practice to weld CPVC
, Answer: PVC solvent
●● What is the minimum access on appliances installed below floors
Answer: 30x22
●● What is the maximum distance of flexible pipe
Answer: 14 feet
●● What Is The Mínimum size Of supply Oil line
Answer: 3/8
●● Pipe support hangers should not support
Answer: Galvánic Action
●● In a hydronic system steel pipe should be Supported at minimum of
every
Answer: 12 feet
●● In a hydronic system with copper pipe the minimum support should
be
Answer: 12 feet
●● What meter is used to measure true power
COMPREHENSIVE STUDY GUIDE
●● Can a 2x4 studding be used for plenum or return chases or duct
Answer: No
●● Appliance in a public garage should have a minimum clearance from
the floor
Answer: 8 feet
●● Duct insulation should have a smoked developed index of no more
than
Answer: 50
●● Duct insulation material should have a minimum flame spread rating
of
Answer: 25
●● What is the maximum temperature of gypsum board
Answer: 125 degrees Fahrenheit
●● What is the best practice to weld CPVC
, Answer: PVC solvent
●● What is the minimum access on appliances installed below floors
Answer: 30x22
●● What is the maximum distance of flexible pipe
Answer: 14 feet
●● What Is The Mínimum size Of supply Oil line
Answer: 3/8
●● Pipe support hangers should not support
Answer: Galvánic Action
●● In a hydronic system steel pipe should be Supported at minimum of
every
Answer: 12 feet
●● In a hydronic system with copper pipe the minimum support should
be
Answer: 12 feet
●● What meter is used to measure true power
