Owner`s manual

D) If you do not have a wire attached to terminal “C” or “X”, you will need to use the
included power supply to power the thermostat. The power supply plugs into a
standard 120VAC outlet and to a connector on the control module.
E) The following table shows what terminals are used by the different control methods.
Determine which control method your system is using by matching which terminals are
connected to your wiring.
Circle the number of the system type that you have. You will use this information when
configuring your thermostat in Step 5.
If you have a wire connected to terminal “E”, you have a heat pump with an emergency
heat function. If you do not also have a wire connected to terminal “W” you will need to
connect the wire connected to “E” to terminal “W”.
# System Type
Terminals
W or W1 or Aux Y W2 Y2 O or B
1 Conventional Heat Only* Y
2 Conventional Cool Only* Y
3 Conventional One Heat/One Cool Y Y
4 Conventional Two Heat/One Cool Y Y Y
5 Conventional Two Heat/Two Cool Y Y Y Y
6 Conventional One Heat/Two Cool Y Y Y
7 Heat Pump One Heat/One Cool Y Y
8 Heat Pump Two Heat/One Cool Y Y ** Y
9 Heat Pump Two Heat/Two Cool Y Y Y
10 Heat Pump Three Heat/Two Cool Y Y ** Y Y
If you have any question on what system type you have, contact support
([e-mail]) or contact your local HVAC service company.
* NOTE: The BAYweb Thermostat requires at least 4 wires in the thermostat cable
between the Thermostat keypad and the Control Module. If you have a heat or cool
only system that only has 2 wires, you will need to install new thermostat wire. It is less
desirable, but often possible to obtain satisfactory operation using 3 wires. Consult the
Frequently Asked Questions section at www.bayweb.com for more information.
** NOTE: Some heat pump installations may use a white wire on W2 instead of W1 for
auxiliary heat. If you have a white wire attached to terminal W2 of your thermostat it
should be connect to the W1 terminal of the BAYweb Thermostat.
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