The high-efficiency furnaces achieve that level of fuel conversion by using a unique heat-exchanger design. It features a finned cast-iron combustion chamber, temperature-resistant steel tailpipe,…
Furnaces have been designed (since 1981) with efficiencies of up to 97 percent, as compared to older types with efficiencies in the 60 percent range.…
There are four ways to describe the heat-pump methods of transporting heat into the house: 1. Air to air: This is the most common method.…
The installation, maintenance, and operating efficiency of the heatpump system are like those of no other comfort system. A heat-pump system requires the same air…
On mild temperature heating days, the heat pump handles all heating needs. When the outdoor temperature reaches the balance point of the home, that is,…
The heat pump is a heat multiplier. It takes warm air and makes it hot air. This is done by compressing the air and increasing…
Newer hot-air furnaces feature printed circuit control. The board shown in Fig. 2-8 is such that it is easy for the technician installing the furnace…
The room thermostat should be located where it will be in the natural circulating path of room air. Avoid locations where the thermostat is exposed…
Make the field low-voltage connections at the low-voltage terminal strip shown in Fig. 2-7. Set the thermostat heat anticipator at 0.60 A (or whatever is…
The installation of a new furnace requires you to follow a factory diagram furnished in a booklet that accompanies the unit. The wiring to be…