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The BTU Buddy Notebook is a collection of more than 50 unique service call scenarios conducted by an HVAC technician which describe real-life service scenarios related to troubleshooting. Many high quality images help to illustrate troubleshooting techniques and the equipment being serviced.
From the Introduction
Introducing "BTU Buddy," Who Says, "Take Some Time to Stop and Think."
Bob is a service technician who is well-trained and nationally certified. Sometimes, however, he suffers from the same confusion that all technicians occasionally do: The facts that he gathers may or may not point to the obvious cause of the problem. But Bob has something that no one else has. Bob recalls his long-time HVACR mentor and imagines being accompanied by him as "BTU Buddy," someone who reminds him to take time to stop and think before rushing to judgment, helping to keep him on the right track, even with facts that are confusing.
Read on as Bob and BTU Buddy move through a series of residential service calls.
About the Author
Bill Johnson graduated from Southern Polytechnic Institute with an associate's degree in Gas Fuel Technology and Refrigeration. He owned and operated an air-conditioning, heating, and refrigeration business for 10 years. He has unlimited licenses for North Carolina in heating, air-conditioning, and refrigeration. Mr. Johnson taught heating, air-conditioning, and refrigeration installation, service, and design for 15 years at Central Piedmont Community College in Charlotte, North Carolina, and was instrumental in standardizing the heating, air-conditioning, and refrigeration curriculum for the state community college system. He is a member of Refrigeration Service Engineers Society (RSES). He is co-author of the successful textbook Refrigeration and Air Conditioning Technology, 6th Edition.
Table of Contents
COOLING SEASON.
Introduction.
Service Call 1: Servicing a Frozen Suction Line and Compressor.
Service Call 2: Charging an Expansion Valve System after Loss of Charge.
Service Call 3: Charging System with a Fixed-Bore Orifice.
Service Call 4: Cleaning a Very Dirty Air-Cooled Condenser.
Service Call 5: A Conversation about Vacuum Procedures.
Service Call 6: Removing Water from a Wet Heat Pump System.
Service Call 7: Changing a Badly Burned Compressor.
Service Call 8: Burned Four-Way Valve Coil on a Heat Pump.
Service Call 9: Discovering Reduced Airflow in the Ducts.
Service Call 10: Fixing a Chronic Leaking Residential A/C Unit.
Service Call 11: Quickly Cooling a Hot Hermetic Compressor.
Service Call 12: Troubleshooting a Water-Cooled Condenser.
Service Call 13: Examining a Cooling Tower Problem.
Service Call 14: Compressor with Refrigerant Flooding Back.
Service Call 15: Compressor with Low Oil Level.
Service Call 16: A Training Lunch with BTU Buddy.
Service Call 17: A Compressor with Internal Leak.
Service Call 18: A Stopped-up Condensate Line.
Service Call 19: Outdoor Unit with Restricted Airflow.
Service Call 20: Repairing a Restricted Liquid Line.
Service Call 21: High-Efficiency Cooling in Mild Weather.
Service Call 22: Frozen Evaporator on a 15-Ton Cooling Unit.
Service Call 23: High Head Pressure, Air in the System.
Service Call 24: Stopped-up Condensate Line.
Service Call 25: Fifty-Ton System with a Defective Solenoid Valve.
Service Call 26: Reciprocating Chiller with Fouled Condenser Tubes.
Service Call 27: Topping Off the Charge for a Fixed-Bore Metering Device System.
Service Call 28: Topping Off the Charge for a TXV System.
Service Call 29: Helping on a 100 F Day.
Service Call 30: A Cooling Tower Starved for Water.
Service Call 31: Evacuation Leak.
HEATING SEASON.
Service Call 32: Working with a Gas Furnace that Is Down Drafting.
Service Call 33: Handling an Over-Fired Boiler.
Service Call 34: Tackling Low Airflow with Electric Heat.
Service Call 35: A Lunch Seminar with Bob and BTU Buddy.
Service Call 36: A Problem of House Windows Sweating.
Service Call 37: Finding Excess Heat Exchanger Scale.
Service Call 38: Handling a Frozen Outdoor Coil on a Heat Pump.
Service Call 39: Looking at a Heat Pump Drawing a Lot of Current.
Service Call 40: Changing a Four-Way Valve on a Heat Pump.
Service Call 41: Checking a Heat Pump with Dirty Indoor Coil.
Service Call 42: A Heat Pump Blowing Cold Air.
Service Call 43: Carbon Monoxide Problem with Gas Furnace.
Service Call 44: Frozen Heat Pump Outdoor Coil.
Service Call 45: Burned Transformer Due to Shorted Coil in Relay.
Service Call 46: Handling a Stopped-up Oil Filter.
Service Call 47: A Smoking Oil Furnace.
Service Call 48: Grounded Electric Heat Coil Causes Fan to Run.
Service Call 49: Air in a Hot Water Heating System.
Service Call 50: How Air Gets into a Hot Water Heating System.
Service Call 51: Stolen Outdoor Heat Pump Unit.
Service Call 52: Grounded Compressor Motor.
Service Call 53: Grounded Compressor Motor (continued).
Service Call 54: Heat Pump with a Stuck Check Valve.
Service Call 55: An Oil Furnace with Sooted Electrodes.
Service Call 56: Smelly Gas Furnace.
Service Call 57: Luncheon about Flue Vents.
Service Call 58: Combustion Air for a Gas Furnace.
Index.
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