HVAC Journeyman Test Accurate 100%(SCORED A+)

Sensible Heat - ANSWER Heat that can be Measured Specific Heat - ANSWER The Amount of Heat Required to Raise 1 LB of a Substance 1*F Latent Heat - ANSWER Heat used to cause change of state. BTU - ANSWER amount of heat required to raise 1LB of water 1*F One Ton of Refrigeration - ANSWER 2000 x 144 x 24,288,000 Btu/24hours, and 12,000 Btu/hr A Room Thermostat Should be Mounted - ANSWER 5 feet from the floor To Provide Proper Oil Return to the Compressor - ANSWER Suction line must be pitched towards compressor. What is the External Equalizer on a TXV for? - ANSWER To offset the pressure drop across the evaporator. What is the Minimum Bending Radius of 1" soft Copper? - ANSWER 5" What is the Heating Value of Natural Gas? - ANSWER 1,000 BTU/cu FT. What is the Purpose of Fan Control? - ANSWER Start and Stop the Fan Motor What is a Limit Control? - ANSWER De-Energizes the gas firing circuit upon high bonnet temps. What is a unconfined space? - ANSWER A space whose volume is greater than 50 ./ 1,000 BTU/h of total input of all gas fired appliances. Total free area of a 15" x 24" combustion air opening used with a metal grill with a unknown free area? - ANSWER 270 sq. in. What is a confined space? - ANSWER A space whose volume is less then 50 CU. ft./ 1000 BTU/h of total gas fired appliance input.