17
Figure 4.n. NRV Schematic interconnecting wiring. B80, B160 and B300 three phase fans
controlled by SmartCom3 via single phase Inverter panel. Zonal BMS Lockout and VF interface.
THE LOCAL RELAY UNIT houses an inverter. This
converts the 230V single-phase input into a
three-phase 230V output. The inverter provides a
soft start to the motor, which extends the motor life
by minimising the start current.
Inverter
Local Relay
Unit
Supply via Isolator
230V 50Hz 1 Pha
SUPPLY VIA ISOLATOR
ELECTRICAL INPUT
230V 1P 22A
230V 1P 22A
230V 1P 30A
FAN TYPE
B80
B160
B300
LL NN
U V W1 342
Drawing No. : 900287 R6 LO
Exhaust
Fan
4-Core Armoured or
Screened Cable 1.5mm²
FAN MOTOR
230V 3-Phase Supply.
Motor must be wired DELTA
3 Phase
Isolator
MPORTANT
For Inverter panels only
(fan types B80 / B160 & B300):
MAXIMUM length of cable between inverter
and fan is 5m (EMC class A building) or
10m (EMC class B building).
N.B. if in doubt, do not exceed 5m.
(HEAT 1 OUTPUT)
(COMMON)
(REMOTE ON)
(REMOTE OFF)
(LIVE)
(NEUTRAL)
NOTES:
REMOTE SENSOR(s) may be
placed at a max distance of 100m
from the control unit, using
screened 6A mains* cable.
Wiring should be kept separate
from mains wiring to minimise
noise pick up. Set within Engineers
functions for remote sensor.
*The power supply is non-isolated,
therefore all wiring to the control must be
mains rated.
Low Voltage
+15V DC
Black Bulb
Sensor
(FAN CIRCUIT)
(FAN CIRCUIT)
Burners
Zone A
Volt
Free
Note:
Connection to the
burners MUST
be made via a
3A fused spur.
BMS
Circuit
Volt Free Burner Lockout
Volt Free Fan Trip Circuit
230V VBurner ON Signal
Circuit
Volt Free Remote ON
THE SOFTWARE FOR THE BMS MUST ONLY REQUEST A
LOCKOUT CONDITION WHEN THE SYSTEM IS
REQUESTING HEAT. IN ADDITION, IT SHOULD ALSO
PROVIDE A 60s DELAY BEFORE INDICATING LOCKOUT.
THIS IS TO ALLOW THE SOLENOID COIL TO OPERATE
AFTER INITIAL SUPPLY IS CONNECTED TO THE HEATER,
WHEN CALLING FOR THE HEAT VIA THE CONTROL
SYSTEM AND A RE-START ATTEMPT IF NECCESARY
Note: If the point is not complied with the BMS
will receive a false report of the burner status
!
!
FUSE RATING
!
41 40 95 1/L 2/N 106
B1 B0 B2 S/R0S/R1
C
SmartCom
Singlezone
NEUT
LIVE
(20 paginas)
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