ATREA DUPLEX RA5 - 5.111-5.116 Controller Settings Overview; 5.111 Temperature and Zone Control; 5.113-5.115 User, Parameters, and Control Modes; 5.116 HS;NHS Switching

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“Temperature” block
It displays temperature in °C currently demanded at any given time. This current temperature demand value may not
correspond to the value set manually or in the weekly program. If that is the case, the temperature required is generated by closed
input D1 to D4 and parameters set for one of these inputs if a specific temperature for Dn inputs is set.
“Zone” block
It shows a currently demanded zone to be ventilated.
Zone ventilation is set by clicking on the Zone icon
on the main screen. The zone requirement value current at the time may
not correspond to the value set manually or in the weekly program. If that is the case, the zone requirement is generated by closed
input D1 to D4 and parameters set for one of these inputs.
Note: Zone texts can be set, for more information see 6.6. The initial zone description setting is: Text Z1 / Text Z2 / Text
Z1+Z2. Active ventilated zone symbols with captions:
- Active zone 1, - Active zone 2, - Active zones 1+2
User settings
By pressing the button on the main screen user setting options are displayed.
Parameters
The “Parameters” options allow choosing operating parameters, setting the HS/NHS parameters and setting automatic switching
between HS and NHS.
Control
“Manual” – The operating modes of the unit are selected directly by the user.
“Weekly program“ – The unit is controlled according to the weekly program.
Switching between HS/NHS
This allows setting the heating or non-heating season or automatic switching between them.
“No“ – The IN1 input (analogue control input) always applies.
“HS“ – Heating season; supply air heating or room heating is allowed.
“NHS“ – Non-heating season; supply air cooling or room cooling is allowed.
“T ODA-“ – Automatic switching between HS/NHS based on outside temperature. The changeover value is set by parameter
“Temperature HS/NHS“ ( 6.1.3). If outside temperature is higher than Temperature HS/NHS, the Non-heating season is
selected automatically. If outside temperature is lower than Temperature HS/NHS, the Heating season is selected automatically.
“T ODA+“ – Automatic switching between HS/NHS based on outside temperature and a ratio between required and room
temperatures. The changeover value is set by parameter “Temperature HS/NHS“.