background image

C

ONT

A

CT

OR

Connections 

to Damper

F

A

UL

T     R

UN

N

L

SL

DP

CL

N

RET

Remove this link wire if: 

1. a switched live signal is connected.

2. A ES-PIR, ES-TC or BMS signal

is connected.

NET connections for 

ECOSMART devices

Min            Max        SL run on

Trickle  

  Test

0        1

Pwr

Standby

Fan 1

Fan 2

Heating

Cooling

Fault

Frost

Tx

Rx

Ecosmart

Heat demand 

signal

Earth

Run signal

Fault signal

HEA

T

D

AMPER

DEMAND

L3

L2

L1

N

E

400V 50Hz 

3ph +N mains

  1         3          5

  2         4         6

(U)

(V)     (W)

L1  L2  L3   E

(U)

(V)    (W)

L3

L2

L1

12   13   14  15

5   6   7    8    9

10   11 

C

ONT

A

CT

OR

A1

A2

0V

0-10V

BMS signal

12   13   14  15

SUPPLY 1

7

08. 06. 18. Leaflet Number 671408

Installation, Operating and Maintenance Instructions

SQURBO XBOX

Unit sizes S7 - S10 Extract fan - all versions and unit sizes S7 - S10 Supply fan without heater

Figure 18:

Unit sizes S7 - S8 Supply fan with electric heater

Figure 19:

Wiring - for units with Ecosmart control cont.

S7-XBV: this variant is supplied with all modules bolted together

into a single unit. All wirings between the modules are pre-wired in

our factory. 

Please note separate mains supply must be connect-

ed to the extract and supply fan control.

S8-10 XBV and S7-10 XBH: these variants are supplied as separate 

modules for on site assembly. The connections between the 

modules are pre-wired into clearly identified plugs and sockets;

these must be plugged together during on-site assembly. 

Please note separate mains supply must be connected to the

extract and supply fan control.

SUPPLY 1.

Section A is an adjacent module in which additional 

controls and sensors are installed. 

These are pre-wired to plugs and sockets.

SUPPLY 3.

SUPPLY 2.

Summary of Contents for ecosmart SQURBO XBOX

Page 1: ...y unit Installation Operating and Maintenance Instructions The EMC Directive 2014 30 EU The Low Voltage directive 2014 35 EU Figure 2 S2 5 XBV RN right hand with no heater Figure 1 S2 5 XBV LE left ha...

Page 2: ...fully weatherproof until their installation including ductwork connections is complete If the storage period is to exceed two months contact Nuaire for guidance on the appropriate mothballing procedu...

Page 3: ...o the mating faces of the unit frames before bolting together Figure 9 Section assembly plate Pipe work connections to heating and or cooling coils shall be made to the appropriate standard and the en...

Page 4: ...ween circuit boards blowers and sensors are made at the factory This diagram only shows the essential field wiring points for clarity Damper Connections Heat Demand Signal Run Signal Fault Signal Damp...

Page 5: ...oling Fault Frost TX RX Extract N E L SL DP CL N RET Heat Demand Run Fault NET connections for Ecosmart devices Min Max SL run on Trickle Test 0 1 Link wire see note ES CO2 Connection BMS Input Signal...

Page 6: ...oil 0V 0 10V BMS signal Unit size S6 XB V H with LPHW coil Figure 17 Connections to Damper FAULT RUN N L SL DP CL N RET Remove this link wire if 1 a switched live signal is connected 2 A ES PIR ES TC...

Page 7: ...nd unit sizes S7 S10 Supply fan without heater Figure 18 Unit sizes S7 S8 Supply fan with electric heater Figure 19 Wiring for units with Ecosmart control cont S7 XBV this variant is supplied with all...

Page 8: ...Trickle Test 0 1 Pwr Standby Fan 1 Fan 2 Heating Cooling Fault Frost Tx Rx Ecosmart Heat demand signal Earth Run signal Fault signal HEAT DAMPER DEMAND L3 L2 L1 N E 400V 50Hz 3ph N mains 1 3 5 2 4 6...

Page 9: ...n extract fan and the by pass damper If the unit is supplied with electric heater this must be connected to suitable control circuit with adequate safety interlock to be designed and supplied by other...

Page 10: ...wiring for S2 6 XB fan only or with LPHW coil bypass damper wiring Figure 27 N L 230V 50Hz Isolator by others Bypass Damper Power to open Auto Close N L EARTH NEUTRAL LIVE Isolator by others N L N L 2...

Page 11: ...rminal A signal of 100 230V a c will activate the fan from either its off state or trickle state see setting to work trickle switch When the SL is disconnected the fan will over run see setting to wor...

Page 12: ...rmostatic expansion valve with an external equalising connection The expansion valve phial must be fitted between the suction header connection and the equalising line The recommendations of the TE va...

Page 13: ...others as standard i Repeat the same procedure as for maximum airflow above but without the link wire between supply L and SL terminal Ensure the trickle switch is in the ON position Adjustment must...

Page 14: ...elt remove the two bolts from the motor mounting furthest from the fan and slacken the remaining two bolts Lift the motor plate and remove the belt Replacing the belt is the reverse of this procedure...

Page 15: ...Where access to any part of equipment which moves or can become electrically live are not prevented by the equipment panels or by fixed installation detail eg ducting then guarding to the appropriate...

Page 16: ...flet Number 671408 Western Industrial Estate Caerphilly United Kingdom CF83 1NA T 029 2085 8400 F 029 2085 8444 E info nuaire co uk W www nuaire co uk Installation Operating and Maintenance Instructio...

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