Terminology talk at the AHR Expo focused on variable-speed compressors, electronically commutated motors (ECMs), and variable-capacity systems as well as diagnostics and troubleshooting tools for contractors.
Bob and Tim have been sent on a routine service contract call to a new customer. The system is a gas furnace with central air conditioning. After changing the filter and oiling the fan motor, Tim went to the thermostat and caused the furnace to come on and they were looking at the burner when Tim said, “That gas flame doesn’t look right.”
The manufacturing division of the Heating, Refrigeration, and Air Conditioning Institute of Canada (HRAI) reports that ductless split systems shipments were up 30 percent in the fourth-quarter of 2011 when compared to 2010.
Canada reintroduced its Energy Star® specifications for gas-fired forced air furnaces, Feb. 1. Only models that have been third-party certified as meeting Version 3.0 or Version 4.0 requirements will appear on the Energy Star qualified product list.
Expanding the TM9X and TM9V families, two models have been added to the Luxaire® LX Series of multiposition gas furnaces. An input rate of 40,000 Btuh enables the furnaces to provide better heat load matches, avoiding oversized equipment selection.