14
26. 08. 21. Document Number 671827
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-ES
Installation Manual
7.8.3 Unit Sizes 15 - 20 with LPHW Heating
N
L
SL
OP
CL
N
RET
HEAT
DEMAND
RUN
FAUL
T
DAMPER
SUPPLY
Suppl
y F
an Boar
d
Switched Live Link
IO Damper Link
Remove when IO
dampers are fitted to
enable fan start delay
Relay Outputs
Run relay is used for
thermal wheel /
frost coil enable relay
Switched Live Link
IO Damper Link
Remove when IO
dampers are fitted to
enable fan start delay
Extract F
an Boar
d
OP
CL
N
DAMPER
N
L
SL
RET
RUN
FAUL
T
SUPPLY
Suppl
y F
an Boar
d
ecosmart
Min
Trickle
0
1
Test
Max
SL Runon
Pwr
Standb
y
Fan 1
Fan 2
Heating
Cooling
Fault
Frost
Tx
Rx
Extract F
an Boar
d
ecosmart
Min
Trickle
0
1
Test
Max
SL Runon
Pwr
Standb
y
Fan 1
Fan 2
Heating
Cooling
Fault
Frost
Tx
Rx
0 24V
+15V 0 -15V 230V 400V
Condensate Pump HX
Bypass Relay
Heat Ex
changer
Bypass Boar
d
ABB
0 0FF
ABB
0 0FF
ABB
0 0FF
ABB
0 0FF
ABB
0 0FF
ABB
0 0FF
ABB
0 0FF
ABB
0 0FF
N
L1 L2 L3
E
Lighting
, Thermal
Wheel & 2
4V
ac
TR
C
ontr
ols
Extract Fan
Supply Fan
Fan Run Relay
HX Bypass Relay
24Vac Fuse 1.6A
Thermal
Wheel F
ault
C
ontacts NC
T14, 15
Suppl
y Filter
dP
C
ontacts NC
T12, 13
Extract Filter
dP
C
ontacts NC
T10, 11
24Vac 0V
IO Damper Relay
400V 3ph 50Hz
Main Power Supply
Overcurrent
Protection
(By Others)
Local R
otary Lockable IP66/67 Isolator
L1
E
L2 L3 N
L1 L2 L3 N
T1 T2 T3 N
1
2
3
4
Condensate Pump
Fault Contacts NC
Condensate
Pump Fuse 1A
Internal interconnections are not shown for clarity.
Key:
Factory Connection
Customer Connection (Mandatory)
Customer Connection (Optional)
LPHW Air Off
Set Point Adjust
LPHW Control Board
Valve not supplied as standard
24Vac LPHW Valve Open
24Vac LPHW Valve Close
0V COM
27
Unit Sizes 15 - 20 with LPHW Heating Wiring Diagram
