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1 how should an external equalizing line for a tev be connected to a horizontal run2 list the different types of
1 define residential air conditioning2 list at least five types commercial air-conditioning applications3 if a direct
1 can energy costs be affected by tab of a system2 how are feet per minute measurements fpm different from cubic feet
1 why does a technician working for a tab firm require specialized training2 how can tab improve the health of the
1 how do the tab procedures for a zoned system differ from a nonzoned system2 how is the cfm at a supply register
1 explain how to measure temperature rise2 why is the temperature difference across an air-conditioning coil not used
1 what is the purpose of discharge air sensors2 what is the purpose of the outdoor air sensor on a zone control system3
1 describe the added features available on some basic zone control systems2 how is an infinity zone control system
1 list six types of measurements used to perform tab procedures2 list five instruments used in tab procedures3 outline
1 often around fluorescent lights in a dropped ceiling there is a narrow slit what is the purpose and advantages of
1 explain the advantages that unit-ventilator-type fcus have in schools2 list the major components in most ahus3 state
1 name the two basic types of fans used in most ahus2 on an ahu with a centrifugal fan what are two advantages of
1 tell why actual motor voltage and amperage should be field measured and logged under full load conditions2 in a
1 how should ultraviolet germicidal lamps be handled2 describe the problems associated with poorly maintained
1 what are the characteristics that amca fan classes are based on2 what are the two broad types of fan designs3 what is
1 explain how a centrifugal fan moves air2 list the two main types of fan drives3 what speed does a fan need to turn to
1 describe one method to determine if a ladder is correctly set up2 besides the manufacturer where can the rooftop unit
1 what are the two possible duct configurations for a rooftop unit2 if using a heat pump rooftop unit why is proper
1 where can the weight for a rooftop unit be found2 the gasket material used between the rooftop unit and the roof curb
1 why is outside air mixed with return air2 how much outside air should be admitted to a space3 can outside air ever be
1 how does duct static air pressure affect the supply-fan load2 how does a perimeter heating or cooling load differ
1 can constant-volume fans be used in variable-air-volume systems2 why are variable inlet guide vanes sometimes used
the following are the results of four drained direct shear tests on undisturbed normally consolidated clay samples
the relationship between the relative density dr and the angle of friction phi of a sand can be given as phi 28 018dr
refer to figure 1145 a square footing 2 x 2 m in size supports a column load of 300 kn the soil characteristics are