IM 1234-1 • BACNET THERMOSTAT 8
www.DaikinApplied.com
I
nsTallaTIon
Connecting Outputs
CAUTION
Can cause equipment damage .
Improperly connecting loads or equipment to output terminals
may damage the equipment. Connect only as shown in the
following diagrams or application drawings.
The BACnet Thermostat outputs are product dependent and
are configured for specific applications.
•
No field programming or set up is required or possible
• Depending on model and application, the BACnet
Thermostat outputs are designed for either 24 volt AC or
0-10 volt DC loads
• The outputs may represent analog or digital signals
Connecting to a Three-Speed Fan
The following diagram shows the connections for a three-
speed fan. The fan circuits must be a 24-volt AC pilot duty only.
• For a single-speed fan, use only the FAN-L connection
• For a two-speed fan, use the FAN-L and Fan-H
connections
• For a three-speed, use FAN-L, FAN-M, and FAN-H
Figure 9: Connections to a Three-Speed Fan
Connecting to a Modulating Fan
The following diagram shows the connections for a modulating
speed fan.
• The fan start circuit must be a 24-volt AC circuit. Connect
it to the FAN-L output
• The speed control is a 0-10 volt DC analog output
Figure 10: Connections for a Modulating Fan
Connecting ON/OFF Valves
The following diagram shows the connections for ON/OFF
valves.
• The valves are activated by 24-volts AC
• The outputs are 24-volt relays
Figure 11: Connections to ON/OFF Valves
Connecting to Modulating Valves
The following diagram shows the connections for modulating
mixing valves. The valve control signal is a 0-10 volt analog
output.
Figure 12: Connections To Modulating Heating and
Cooling Valves
