User's Manual

Onity, Inc.
2100A Nancy Hanks Drive. Norcross GA 30071 USA
Phone [phone]. Toll Free 1-866-to-Onity
Fax[phone]. www.onity.biz
change unless the RCU receives a message indicating that no motion
has been detected.
The following list details the information the RCU will track from the
wireless devices:
• Temperature Setting
• Room Temperature
• On / Off status of WDDC
• Fan button selection
• Motion Status
• Door Status (Interior and Exterior doors)
• Battery Status of each device (for future use)
The RCU expects to receive a status message from the WDDC at least
once every 30 minutes. If no status is received for 35 minutes, the
RCU determines that there is a problem with the WDDC unit. In this
case, the RCU will shut down the HVAC system until the problem with
the WDDC is solved.
Occupancy Determination
Due to the nature of this system, determination of occupancy is
somewhat different than on wired systems. Because the WDDC and
Remote Motion Sensor only ‘wake up’ once per minute to check the
motion status, some special considerations must be made.
Basically, if the door is closed and motion is detected, the system
determines that the room is occupied. However, with the wireless
system, it is possible that the WDDC or Remote Motion Sensor will
send a message that motion has been detected after the guest leaves the
room. Remember, the WDDC and Remote Motion Sensor units wake
up once per minute to check motion status. If at anytime during the
previous minute motion has been detected, the status will show that
there is motion.
For example, the guest leaves the room. 30 seconds later the WDDC
wakes up and checks the motion status. Because motion was detected
during the previous minute (the guest only left the room 30 seconds
ago), the WDDC’s status shows motion has been detected. The RCU
knows that the door was closed due to the door switch transmitter. It
also knows that motion was detected due to the motion sensor of the
WDDC. If special considerations were not made, the system would
remain in occupied mode.
In order to overcome the problem described in the example above, the
occupancy determination is made as follows:
When the RCU receives a notification of a door closed event, it starts
the 8 minute timer and the HVAC system operates based on the