Your troubleshooting situation this time around relates to a walk-in refrigeration system in a busy restaurant that has experienced a compressor failure… specifically a mechanical failure. And it’s not the first time.
Bob and Btu Buddy have gotten together for coffee to discuss the previous service call and some of the questions about electric heating that came up. Btu Buddy said that they would talk about them one at a time, and probably other questions would come up.
When you improve chiller efficiency, you can have better control of the chiller and the air conditioning in the building, and the chiller will also last longer. The recommendations here are for centrifugal chillers. Several different methods are suggested.
A call has come in from a new customer that the system in a small office building is not heating properly. Bob finds the building has an electric heat furnace and, when he removes the panel, he is amazed at how many wires and terminals there are and starts to become confused. Btu Buddy arrives to assist him.
In this month’s troubleshooting situation we’re taking you to a modular classroom with a heating/cooling unit that employs resistance-type elements for the heating mode, and a direct expansion system for cooling. The complaint is that there is “very little cooling” being accomplished.
The day has been cold and damp, and Bob has been called to do a routine checkup on a heat pump in a condominium complex. Most of the units in the complex are frosted over, but the unit that he is to service has a very different frost pattern. Bob is trying to figure out what’s going on when Btu Buddy appears to help him.
The greatest energy cost reduction opportunity lies with the HVAC system - a facility’s largest discretionary source of energy demand and, thus, its highest controllable expense. Advancements in commercial energy efficiency systems have now made them far more affordable for small to mid-sized facilities.
Bob gets a service call where the owner says there is not enough heating at one end of an office building. With Btu Buddy's assistance, Bob checks the duct system and finds that a piece of duct liner is laying down in the duct blocking the airflow and he proceeds to correct the problem.
In this troubleshooting situation, we have a customer who is complaining about one of the bedrooms in their home, specifically that the gas furnace doesn’t warm the room properly. When you arrive, you find that the bedroom in question is the furthest from the furnace, and that the duct system is an extended plenum system.
Their last service call is continued as Bob and Btu Buddy meet for lunch at the restaurant where the call occurred to discuss dew point. The duct through the dining room was dripping because the duct surface temperature was below the dew point temperature of the room and moisture formed on the duct surface.