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Xenta 102-ES configuration and wiring for 2 position (on / off) heating control

Issue

Xenta 102-ES configuration and wiring for 2 position (on / off) heating actuators or other digital heating control

Environment

  • Vista
  • Xenta 102-ES

Cause

Wiring for 2 position heating control on the Xenta 102-ES is different than increase / decrease type actuators.

Resolution

The Xenta 102-ES documentation refers to two position heating control as thermal actuators, thermo or TAO and can be somewhat confusing.

The same info applies whether using a two position hot water valve, any on / off type electrical heat (such as baseboard heaters or electric heating strips. Here's what you need to know:

  • If using only one stage of heat:

Select Thermo for Primary Heating in the Xenta 102-ES plugin or if configuring from Vista Workstation or the OP set nciAppOptions bit 5 to 1 and leave bit 6 as 0.

 


From the Xenta 102-ES plugin choose either Normally Closed (NC) or Normally Open (NO) from the box in between the Primary and Secondary Heating fields. Additionally, this can be configured from Vista Workstation or the OP by setting nciAppOptions bit 11 to 0 for normally closed (NC) operation or set bit 11 to 1 for normally open (NO) operation.

Both terminals V3 and V4 will be switched when the first stage of heat is activated. These terminals operate in parallel in this configuration and either one can be used.

 

  • If using two stages of heat:

Select Thermo for Primary Heating in the Xenta 102-ES plugin and select Enable for Secondary Heating. If configuring the device from Vista Workstation or the OP set nciAppOptions bit 5 and bit 6 to 1.

From the Xenta 102-ES plugin choose either Normally Closed (NC) or Normally Open (NO) from the box in between the Primary and Secondary Heating fields. Additionally, this can be configured from Vista Workstation or the OP by setting nciAppOptions bit 11 to 0 for normally closed (NC) operation or set bit 11 to 1 for normally open (NO) operation.

Both terminals V3 and V4 will be switched when the first stage of heat is activated. These terminals operate in parallel in this configuration and either one can be used. Only terminal V6 will be switched for second stage of heat.

Note: The triac outputs of the Xenta 102-ES are ground sourcing and should be wired accordingly. See Lessons Learned #4403 for additional information.

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