25
21. 07. 20. Document Number 671954
Nuaire |
Western Industrial Estate
|
Caerphilly
|
CF83 1NA
|
nuaire.co.uk
XBC+ with Ecosmart Connect (C) Control
Installation Manual
6.5 Multiple Sensors
Where multiple sensors are connected the following options are
available.
State
Description
Temp Sensor Operation
Room Module Average (Default)
Return Air Only
Room Module & Return Air Average
Setpoint Operation
Last Value Changed
Software Setpoint Only (Default)
Last Value Changed With Timeout
Humidity Sensor
Operation
Average (Default)
Max
Ignore
CO2 Sensor Operation
Average (Default)
Max
Ignore
Pressure Sensor
Operation
Average (Default)
Max
Ignore
6.5.1 Setpoint Adjustment and Operating Modes
There are 3 ways of setting the controller’s setpoint:
•
Software Setpoint - Adjustable by ESCO-LCD or BACnet network.
Once set the LCD can be disconnected.
•
Setpoint Schedule - Adjustable by ESCO-LCD or BACnet network.
Once set the LCD can be disconnected.
•
User operated Room Module with LCD - The room module must
stay connected in order to retain the setpoint.
There are 3 options for setpoint operation which can be selected by the
setting “SetPoint Op”:
•
Last Changed - This uses whichever setpoint was adjusted as the
active setpoint. This includes Room Module setpoints, Software
Setpoint and Setpoint Schedule.
•
Software Only - This only uses the software setpoint as the active
setpoint.
•
Last Changed With Timeout - This option uses the last setpoint
changed as the active setpoint but reverts back to the ‘Software
Setpoint’ after a period set by the value ‘Setpoint Timeout’.
6.5.2 Constant Pressure Control
An extract air pressure sensor is fitted to IN4 standard. IN4 is disabled
by default but constant pressure control can be enabled by setting IN4
function to 0-10v pressure sensor.
When enabled, the unit will the increase fans speeds as required until
the pressure differential between the extract air and atmosphere
reaches the constant pressure setpoint.
The target pressure setpoint can be changed as one of the
commissioning setpoints. Room Module pressure sensors are not
available.
6.5.3 Fan Speed Input Control
Once assigned to input 5, the 0-10V input is scaled to 0-100%
fan speed demand. This is available on IN5 only. The fan speed can
be adjusted in software using the LCD or a BACnet connection by
adjusting the Fan Speed Demand object. Fan Speed can also be set via
a schedule by using the Fan Demand Schedule. These inputs do not
enable the unit, so another enabling signal such as switched live, or on/
off schedule is required.
6.5.4 Auxiliary Inputs 4 & 5 (0-10V Inputs)
The function of IN4 & IN5 can be set by the network inputs IN4
Function & IN5 Function. The available options are as follows.
Function
Description
Available Ranges
None
The signal is ignored
N/A
Fan Speed
Control
A 0-10V input is used as a fan
speed demand. 0V = Min Speed
10V = Max Speed. This is
available on IN5 only.
N/A
EGG
(Ecosmart
Gateway
Gadget)
A 0-10v input will enable the
system and run the fans to a
speed set by the BMS table in
section 7.16.6. This is available
on IN5 only.
N/A
0-10V
CO2 Sensor
0-10V is scaled as defined by
the network input “CO2 0-10V
Output Range”
0-2,000ppm
0-4,000ppm
0-5,000ppm
0-10,000ppm
0-20,000ppm
0-10V
Temperature
Sensor
0-10V is scaled as defined by
the network input “Temperature
Sensor 0-10V Output Range”
0 - 40°C
0 - 50°C
0 - 80°C
0 - 90°C
0 - 100°C
0-10V
Pressure
Sensor
0-10V is scaled as defined by the
network input “Pressure Sensor”
0 - 25 Pa
0 - 50 Pa
0 - 100 Pa
0 - 300 Pa
0 - 500 Pa
0 - 1000 Pa
0 - 1600 Pa
0 - 2500 Pa
0 - 3000 Pa
0-10V
Humidity
Sensor
0-10V is scaled to 0-100%
humidity
0 - 100% only
6.5.5 BMS 0-10V Input
A 0-10v input will enable the system and run the fans to a speed set by
the BMS table in section 7.16.6. This is available on IN5 only.
6.5.6 CO
2
Control
When a CO
2
sensor is assigned to the system and an enable signal
is received, ventilation will increase fans speeds to reduce CO
2
concentration. The target CO
2
sensor setpoint can be changed as one of
the commissioning setpoints. Room Module CO
2
sensors are detected
automatically. 0-10V CO
2
sensors need to be assigned to input 4 or 5.
6.5.7 Humidity Control
When a humidity sensor is assigned to the system and an enable signal
is received, ventilation will increase fans speed to reduce humidity. The
target humidity setpoint can be changed as one of the commissioning
setpoints. Room Module humidity sensors are detected automatically.
0-10V humidity sensors need to be assigned to input 4 or 5.
