Service & Maintenance

Btu Buddy 63: Cleaning and Filling a Hot Water System

June 23, 2008
This article is a continuation of “Btu Buddy 62: An Overheated Boiler” from the May 19, 2008 issue. After Bob talks with Sid, the water treatment expert, Btu Buddy assists Bob in cleaning and filling the system.
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Water Leak at the Indoor Unit

June 9, 2008
Under no circumstances should you ever see water around the indoor unit. This is a sign that something is either dripping, leaking, or not draining. But indoor water problems don’t occur only during the summer cooling season. Here's a list of possible causes of water leaks and things to check.
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Btu Buddy 62: An Overheated Boiler

May 19, 2008
The spring is beginning to bring warmer weather when Bob gets a call from the dispatcher that a small apartment building is overheating. The building is heated with an old boiler that is running really hot. Btu Buddy helps Bob track down the problem.
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If You Can't Repair Leaks, Seal Them

May 5, 2008
A leaking chiller forced an automotive manufacturing plant’s HVACR engineer to decide between a costly production shutdown or using a can of refrigeration system sealant to eliminate the leak. Deciding on the sealant quickly put a lid on the engine factory’s repair fees.
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Btu Buddy 61: Servicing an Old Oil Furnace

April 21, 2008
The dispatcher calls Bob about servicing an old oil furnace. The customer is old and is adamant that he doesn’t want a new furnace, so Bob does not try to get him to upgrade to a new model. He tells the customer that he will see that he gets the most out of the old furnace that he can.
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Air Conditioning System Commissioning and Startup

April 7, 2008
Air conditioning system commissioning and startup is the process of inspecting a new air conditioning installation, and verifying that the new system is running properly and efficiently. This article describes the commissioning procedure.
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Btu Buddy 60: High Head Pressure and Power Consumption

March 24, 2008
Bob and Btu Buddy get together for lunch and talk about why high head pressure seems to drive up the power consumption of a compressor. Bob remarks that the problem “doesn’t seem to happen in the cooling season, only in the heating season. What is the difference and why is this happening?”
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Noise Reduction

March 10, 2008
Dealing with a user’s complaint of a noisy motor can be a frustrating experience. After all, the perception of noise is extremely subjective (just ask the parents of teenagers). Not only does the range of human hearing differ considerably among people, but it also varies by specific frequency.
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Btu Buddy 59: High Power Bills With a Heat Pump

February 18, 2008
Bob is called to a new customer’s home with a 5-ton heat pump that is experiencing power bills that are considerably higher than the same months last year. Btu Buddy assists Bob in diagnosing the problem.
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Troubleshooting With Jim Johnson: A Gas Furnace Follow-Up Service Call

February 4, 2008
In this column, Jim Johnson of Technical Training Associates presents a specific HVACR equipment problem and invites readers to submit their diagnosis. From those who submit the correct answer by the deadline, there will be a prize drawing. Here is a furnace problem.
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