Honeywell CHRONOTHERM IV T8665A - Manual (Page 5)

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USING THIS GUIDE
The T8665A is a multi-functional thermostat. This means it can be used in single or multi-zone applications.
The following symbols will help you identify the features that apply to your system:
– Triple layer of thermostats with the word, zoning, below. These features are available when more
than one thermostat is used with the W8665E RF Zone TM Panel.
– Tip symbol. Look for helpful tips throughout the guide when you see this symbol.
80 90 70 60
90 80 70 60
ZONING