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08. 12. 21. Document Number 671949
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
XBC+ with Adapt Trend (T) Control
Installation Manual
6.11.3 Thermal Trip
In case of software failure, as a final resort, the electric heater is
protected by a fail-safe thermal overload switch. This switch disables
the heater controller once the temperature reaches 80°C. When this
occurs, the critical alarm will latch in software.
Once the unit cools, the contactor will re-engage but the heater signal
will remain at 0V until the critical fault is reset in software or by power
cycle.
6.12 Controller Function Settings
Point Name
Description
Range
Default
ENABLE
Software enable switch
Off / On
Off
RUNONTIME
Run-on timer value
0 - 3600 Seconds
0
TRICKLEMODE
When on, fans will trickle even with no enable signal
Off / On
Off
SETTEMP
Desired temperature setpoint
10°C to 30°C
22
DEADBAND
Dead-band for temp control
0.5°K to 10°K
3
BOOST
Software boost switch
Off / On
Off
BOOSTRUNON
Boost run on
0 - 3600 Seconds
0
FROSTPROTEMP
Temperature, below which, any water valves will be
overridden open
-40°C to 10°C
4
MINFROSTPROTECTPERIOD
Minimum time frost protection will be enabled
0 - 600 Seconds
300
DAMPERDELAY
Startup delay to allow I/O dampers to open
0 - 300 Seconds
0
ALARMDELAY
Alarm hold-off delay
0 - 20 Seconds
5
HIGHAIRTEMPALARM
High supply air temp alarm temperature
30°C to 70°C
50
LOWTEMPALARM
Low supply air temp alarm temperature
-40°C to 20°C
8
FORCESTOPONLOWTEMP
Stops fans upon LOWTEMPALARM
Off / On
Off
ALARMRESET
Resets any latched alarms (Resets to Off Automatically)
Off / On
Off
SUPPLYFANMAX
Individual fan maximum speed settings
20 - 100%
100
SUPPLYFANMIN
Individual fan minimum speed settings (trickle speed)
0 - 100%
20
EXTRACTFANMAX
Individual fan maximum speed settings
20 - 100%
100
EXTRACTFANMIN
Individual fan minimum speed settings (trickle speed)
0 - 100 %
20
SUPPLYFANBOOST
Supply fan boost speed
20 - 100%
100
EXTRACTFANBOOST
Extract fan boos speed
20 - 100%
100
SUPPLYFANSTARTVOLTAGE
The voltage threshold of passing 0% rotational speed
0 - 5V
1
EXTRACTFANSTARTVOLTAGE
The voltage threshold of passing 0% rotational speed
0 - 5V
1
SUPPLYFANVOLTAGELIMIT
The maximum voltage to be supplied to the fan motor
6 - 10V
10
EXTRACTFANVOLTAGELIMIT
The maximum voltage to be supplied to the fan motor
6 - 10V
10
CO2TARGET
The target setpoint for CO2 control
0 - 10000 PPM
650
CO2RANGEMIN
The lower limit CO2 value corresponding to the limit voltage
0 - 10000 PPM
0
CO2VOLTAGEMIN
The lower limit voltage corresponding to the limit of range
0 - 10 VDC
0
CO2RANGEMAX
The upper limit CO2 value corresponding to the limit voltage
0 - 10000 PPM
2000
CO2VOLTAGEMAX
The upper limit voltage corresponding to the limit of range
0 - 10 VDC
10
CO2-LOOPGAIN
CO2 Loop Gain
0 to -30
-0.5
CO2-LOOPINTEGRAL
CO2 Loop Integral
0 to 30
10
CO2-LOOPDERIVATIVE
CO2 Loop derivative
0 to 30
0
SUMMERNIGHTFREECOOLACTIVE
Set night cooling mode as active
Off / On
Off
SUMMERNIGHTFREECOOLMINTEMP
Night cooling lower cut-off temperature
5°C to 30°C
10
SUMMERNIGHTFREECOOLFANSPEED
Night cool fan speed
20 to 100 %
80
