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1 list the types of heat pumps available by combinations of heat source and heat sink2 why is a heat pump called a heat
1 how can overlubricating a blower motor be detrimental2 what are the two general types of sequencers used on electric
1 what should always be checked when replacing a transformer2 explain how a stuck heating sequencer can keep the fan
1 a technician reads 240 v across the thermal overload to the first strip heater on an electric furnace what does this
1 a pressure-time-temperature defrost system goes into defrost with very little frost on the bottom of the coil
1 what are the indications a check valve has stuck closed on an outside coil2 name the four most predominant defrost
1 when a heat pump system is in the heating mode and there is an increase in the temperature rise what does this
1 how can heat be considered a form of pollution2 how is heat transferred in a heat pump ground loop3 what type of
1 why are the insulated water tanks for heat pump systems referred to as buffer tanks2 where is the compressor located
1 what site conditions should be taken into account when considering the installation of a ground-source heat pump2
1 why dont water-source systems have a defrost cycle2 explain the difference between an open loop and a closed loop3
1 how does a heat pump hot-water heater work2 what is the difference between a mini-split system and a traditional
1 describe the operation of a dual-fuel heat pump operating below the balance point2 what is the difference between
1 what is the purpose of the outdoor air thermostat2 what determines which metering device is active3 where in the
1 why must a heat pump indoor coil be able to withstand higher pressures than a regular air-conditioning evaporator
1 what are the two main types of defrost controls used on heat pumps today2 describe what happens during the defrost
1 name three pollutant areas that would be category2 what are the two most common pollutant pathways3 what is the best
1 define iaq what needs to be addressed to achieve acceptable iaq2 what is amplification explain the technicians role
1 what is the ansigbi 01-2010 standard what are the five main rating system categories for leed certification2 what
1 what is the igcc and what does it serve to accomplish2 what are the i-codes what is the purpose of the astm
1 why is it important to meet the building standards during new construction rather than waiting until some later time
1 what was the first state to develop a mandatory green building standards code2 the calgreen code is established to do
1 why is the cost of owning a green building often less than the cost of owning a conventionally constructed building2
1 what is the space above the drop-in ceiling in a commercial building used for in the hvacr industry2 what must be