4
25. 01. 17. Leaflet Number 671440
Installation and Maintenance
XBOXER (XB2-5)
1.8 Unit Dimensions (mm)
Fan unit side view
Fan unit end view
1700
1150
3
40
31
5
300
300
100
Auxiliary Fan side view
605
3
40
555
31
5
Auxiliary Fan end view
Figure 12.
Fan unit weights
Unit code
Weight (kg)
XB2
153
XB3
153
XB4
155
XB5
155
Auxilliary fan unit weights
Weight (kg)
30
Isolation - Before commencing work make sure
that the unit, switched live and Nuaire control are
electrically isolated from the mains supply.
2.0 Wiring (Units with Ecosmart
Control)
The electrical wiring must be carried out by competent persons,
in accordance with good industry practice and should conform
to all governing and statutory bodies i.e. IEE, CIBSE, COHSE etc.
Connections
a) Control Connections
Net
- the 4 IDC plug-in connectors are provided for the
connection of compatible sensors, manual controls and for
linking the fans together under a common control. If more
than 4 connections are required, the junction box (product
code ES-JB) should be used (see data cable installation).
Switch Live (SL) terminal
- A signal of 100-230V a.c. will
activate the fan (required at each control).
Note that a signal from an isolating transformer will
produce an unpredictable result and is not recommended.
b) Damper Connections
OP
-
230V 50Hz 1A max supply to open the damper
CL
-
230V 50Hz 1A max supply to close the damper
N
-
Neutral supply to damper
RET
-
230V ac return signal from the damper limit switch
indicates the damper has reached its operating position. If the
return signal is not present, the fan will wait for 1 minute before
starting.
Note: If a damper is not fitted, connect a link wire from OP
to RET. This will cancel the delay.
c) Volt Free Relay Contacts
Note that the volt free contacts are not fused. If these are
used to power any external equipment, the installer must
provide adequate fusing or other protections.
These contacts are rated at 5A resistive, 0.5A inductive.
Run connections
- These contacts are closed when the fan
is running.
Fault connections
- No fault = the contacts are closed.
Fault
= the contacts are opened.
Heat demand -
contacts closed when heating is selected.