All installations and services must be performed by qualified service personnel.
Figure 16.
: The CMA/CMC furnace models are direct vent design and do not require an air shutter adjustment (air shutters are not used) for proper flame characteristics. Burner box access cover must always be secured with all screws in place and tightened before operating furnace.
E.SETTING TEMPERATURE RISE
All CMA/CMC Models are designed and wired at the factory for a heating blower speed that should result in an approximate temperature rise of 60°F. The blower motors are wired on
The circulating air blower is not moving enough air if the supply air temperature is still too high. Before proceeding further, turn off the power supply to the furnace and remove the front door of the unit.
The speed of the blower must be increased by changing the speed tap from the motor (see figure 15). This is accomplished by locating the control panel attached to the blower housing and switching blower lead connected to the “Heat” terminal on the
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