Unoccupied Timer Disable - Johnson Controls - 24-9890-1397 - T612DFH-4 - T612DFH-4+PIR - T612DFH-4 and T612DFH-4+PIR Thermostat Controllers with Fan Control and Occupancy Sensing Capability

T612DFH-4 and T612DFH-4+PIR Thermostat Controllers with Fan Control and Occupancy Sensing Capability Installation Guide

Brand
Johnson Controls
Product name
T612DFH-4 and T612DFH-4+PIR Thermostat Controllers with Fan Control and Occupancy Sensing Capability
Document type
Installation Guide
Document number
24-9890-1397
Document revision
B
Revision date
2021-01-07
Product status
Discontinued
Language
English

It might be preferable for the local area to stay out of Unoccupied mode and always stay at the Standby occupancy level when no activity is present. In instances when areas always need to be on Standby status, ready to respond to demand at any given point in time, we recommend disabling the Unoccupied timer. When the local PIR occupancy routine is running at the thermostat controller, the zone drifts into Unoccupied mode when the Unoccupied timer is set above its factory default value of 0.0 hours.

When the local PIR occupancy routine is running at the thermostat controller, the zone never drifts into Unoccupied mode when the Unoccupied timer is set to its factory default value of 0.0 hours.

Figure 1. Unoccupied Timer Set to 0 Hours and Standby Timer Set to 2 Hours