6
26. 01. 17. Leaflet Number 671340
Installation and Maintenance
SQURBO XBOX
4.0 Wiring - for units supplied
without Ecosmart Control
The wiring illustrations below are for the fans, bypass damper
and electric heater for units without control.
All wiring is terminated in junction boxes fitted to the specified
side of the unit.
It is the installer’s responsibility to select and fit the appropriate
control equipment to produce the desired output.
Note that any heating/cooling coils fitted are supplied
without control valve and actuator.
Electrical Details
Fan motor
Electric heater
ratings
ratings (if fitted)
Unit size flc
sc
kW
flc
S1-XB
2x 0.65A
2x 0.65A
N/A
N/A
S2-XB
2x 0.75A
2x 3A
4.5kW
18.7A
S3-XB
2x 0.75A
2x 3A
4.5kW
18.7A
S4-XB
2x 1.2A
2x 4.8A
4.5kW
18.7A
S5-XB
2x 1.2A
2x 4.8A
4.5kW
18.7A
S6-XB
2x 3A
2x 3A
6.0kW
25A
Bypass damper rated at 3W, 13mA for all unit sizes.
Isolator
by others
N L
N L
230V-50Hz
Speed control signal
<1V = fan off
Alternatively connect link
from +V to SIG for
max speed
1 - 10V
0V
+V
SIG
0V
(Unit size S1-XB) Fan wiring.
Two per unit and one per blower.
Isolator
by others
N L
N L
230V-50Hz
N L
230V-50Hz
N L
Isolator
by others
Bypass Damper
P
ower t
o open
A
ut
o Close
Electr
ic Heat
er
Ther
mal Ov
er
load
Connection t
o
Electr
ic Elements
(Unit sizes S2-6-XB) with electric heater
bypass damper and electric heater wiring.
(Unit sizes S1-6-XB) Fan only or with
LPHW coil bypass damper wiring.
N L
230V-50Hz
Isolator
by others
Bypass Damper
P
ower t
o open
A
ut
o Close
N L
Figure 10.
Figure 13.
Figure 14.
EARTH
NEUTRAL
LIVE
Isolator
by others
N L
N L
230V-50Hz
Fuse
3A (T)
(Unit size S2-5-XB) Fan wiring.
Two per unit and one per blower.
Figure 11.
Isolator
by others
N L
N L
230V-50Hz
Speed control signal
<1V = fan off
Alternatively connect link
from +V to SIG for
max speed
1 - 10V
0V
+V
SIG
0V
Note: Do not wire the power supply to motor
via motor thermal overload as these are only
closed after the motor is energised.
Thermal overload contact rating is
2A max resistive.
Mo
tor Ther
mal
Ov
er
load
TK TK
(Unit size S6-XB) Fan wiring.
Two per unit and one per blower.
Figure 12.
