7.1 GENERAL
The system incorporates a preconfigured BACnet MS/TP enabled
controller.
7.2 THE NUAIRE UNIT CONTAINS THE FOLLOWING
CONTROLLABLE ITEMS:
l
Inlet Damper (if fitted).
l
Exhaust Damper (if fitted).
l
Heat Recovery and Bypass Damper.
l
Heating Coil (if fitted).
l
Cooling Coil (if fitted).
l
Supply Fan Speed.
l
Extract Fan Speed.
7.3 ENABLE SIGNAL
The unit can be enabled via the following methods:
l
Software switch
(E
NABLE) via local display or network.
l
Switched live (230VAC) input, PIR etc.
l
Volt free input contacts.
l
Night cooling / summer free-cooling strategy.
l
Scheduled via weekly calendar. (Schedule are accessed and
adjusted via the ESCO-LCD)
l
Fan Speed Override
l
Room Module PIR sensor
l
Room Module 3-Fan Speed Button (While in low, med or high state)
When the enable signal is removed, the unit will run on for a time defined by
the run-on setpoint.
If auto run-on is enabled, the unit will measure the each enable period and set
a dynamic run-on time proportionally to this value. This time is scaled by the
network input “Auto run-on Scale Factor” and limited by the input “Auto Run-
on Max Time”.
7.4 ROOM MODULES
Ecosmart Connect allows the connection of multiple Room Modules which are
automatically detected and connect to the controller via a SA (Sensor
Actuator) MS/TP bus. See Network Accessory section for more connection
details.
7.4.1 ROOM MODULE PIR
When a Room Module PIR sensor is connected via the SA bus, the control will
automatically use this as an enable signal by default. There is a non-adjustable
minimum run-on time of 15mins for Room Module PIRs. This is in addition to
any software run-on times.
7.4.2 RM 3-SPEED FAN OVERRIDE (ESCO-TDFS ONLY)
When a RM fan speed override is available it will override fan speed functions.
This function overrides any run-on time (except for electric heater heat
dissipation). While in override mode, the unit will ignore return air temperature
and set the supply air to the setpoint. Multiple fan override sensors are not
supported.
Whenever a fan-speed override Room Module is connected, the display will
automatically show the fan speed status at all times.
Warning: If a RM Fan
Speed override button is left in any position (apart from auto), the unit will
stay in override mode indefinitely. This includes off mode.
Mode
Operation
Display
“Auto”
The controller will ignore the fan
speed override. Current fan
speed will still be displayed.
“Off”
The controller will override all
functions and stop the fans.
“Low”
The fans run at low speed.
“Medium”
The fans run at medium speed.
“High”
The fans run at high speed.
15
nuaire.co.uk
XBOXER XBC
ECOSMART (CO) MODELS
7.0 DESCRIPTION OF CONTROL SOFTWARE STRATEGY
30. 11. 15. Leaflet Number 671710
(MS/TP)
Summary of Contents for ecosmart CONNECT XBOXER XBC
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