4
nuaire.co.uk
029 2085 8400
13. 03. 19. Document Number 671188
Installation and Maintenance
Ecosmart Boxer Air Handling Units
4.0 WIRING
4.2.1 Power Requirements
4.2.2 ESBHS1, ESBHS2, ESBHEX1 and ESBHEX2
IMPORTANT
This product must be earthed.
Unit Model
FLC
Fan Only
Electric Heater
(Max Power)
FLC
Heater
ESBHEX1, ESBHS1-L
4.8A
N/A
N/A
ESBHS1-E
4.8A
18kW
25A
ESBHEX2, ESBHS2-L
7.3A
N/A
N/A
ESBHS2-E
7.3A
24kW
33A
ESBHEX3, ESBHS3-L
11A
N/A
N/A
ESBHS3-E
11A
27kW
38A
ESBHEX4, ESBHS4-L
11A
N/A
N/A
ESBHS4-E
11A
36kW
50A
ESBHEX5, ESBHS5-L
16A
N/A
N/A
ESBHS5-E
16A
54kW
75A
ESBHEX6, ESBHS6-L
16A
N/A
N/A
ESBHS6-E
16A
54kW
75A
ESBHEX7, ESBHS7-L
16A
N/A
N/A
ESBHS7-E
16A
54kW
75A
Cautionary Notes:
•
Ecosmart controls use ‘burst fire’ control technology to manage
the heater output. Due to the high absorbed currents on electric
heaters there may be voltage drops experienced in the electrical
system that may have an adverse effect on lighting etc.
•
There are no inrush starting currents quoted because the Ecosmart
control incorporates a soft starting speed control feature.
•
The inverters are pre-set to match the fan heaters and control
requirements. Under normal circumstances it should not be
necessary to adjust them.
•
Pay particular attention to the model type, recorded on the
product rating plate and connect as follows.
The electrical wiring must be carried out by a competent person
and the unit must be provided with means of local isolation (by
others) for maintenance purposes. A suitable isolator is available
from Nuaire as a separate option.
Connections
to Damper
N
L
SL
DP
CL
N
RET
Remove this link wire if:
NET connections for
ECOSMART devices
1. a switched live signal is connected.
2. A ES-PIR, ES-TC or BMS signal is connected.
Max SL run on
Min
Trickle
Test
1
0
Pwr
Standby
Fan 1
Fan 2
Heating
Cooling
Fault
Frost
Tx
Rx
Ecosmart
signal
Heat demand
L
N
E
Earth
Controller
Speed
Run signal
Fault signal
FAULT RUN
HEAT
DAMPER
DEMAND
230V 50Hz
1ph mains
0V
0-10V
BMS signal
Figure 9. ESBHS1, ESBHS2, ESBHEX1 and ESBHEX2.
