NuAire XBC75 Installation Manual Download Page 1

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09. 06. 21. Document Number  671786

Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk

XBC75 & 85

Adapt Siemens (AS) Control

Supply & Extract Ventilation with Heat Recovery 

Installation Manual

1.0 SAFETY INFORMATION

• 

The provision of the electrical supply and the connection of the unit to the electrical supply must 

be carried out by a qualified electrician.

• 

Isolate from power supply before removing any covers. During installation / maintenance ensure 

all covers are fitted before switching on the mains supply. 

• 

All-pole disconnection from the mains as shown in the wiring diagram must be incorporated 

within the fixed wiring and shall have a minimum contact separation of 3mm in accordance with 

latest edition of the wiring regulations.

• 

This unit must be earthed.

• 

Ducting must be securely fixed with screws to the spigot to prevent access to live parts. Duct 

runs terminating close to the fan must be adequately protected by suitable guards.

• 

This appliance should not be used by children or persons with reduced physical, sensory or 

mental capabilities or lack of experience and knowledge, unless they have been given supervision 

or instruction concerning the safe use of the appliance by a person responsible for their safety. 

Children shall not play with the appliance. Cleaning and user maintenance shall not be carried 

out by children.

1.1 Symbols

 

GENERAL WARNING 

 

 

Signifies a general warning regarding hazard specified by supplementary information.

 

ELECTRIC SHOCK

 

 

 

This unit must be completely electrically isolated before any panels are removed. Check  

 

 

mains supply and control connections. 

 

ROTATING PARTS 

 

 

 

This unit contains fast moving rotational parts which may start automatically. It is the  

 

 

sole responsibility of the installer to adequately guard these components.

 

REFER TO INSTRUCTION MANUAL

 

 

 

Read and understand the installation and maintenance manual before installing,    

 

 

operating or maintaining this product.

1.2 Important Information

This manual contains important information on the safe and 
appropriate assembly, transport, commissioning, operation, 
maintenance, disassembly and simple troubleshooting of the product.

While the product has been manufactured according to the accepted 
rules of current technology, there is still a danger of personal injury or 
damage to equipment if the following general safety instructions and 
the warnings contained in these instructions are not complied with.

Read these instructions completely and thoroughly before 
working with the product.

Keep these instructions in a location where they are accessible 
to all users at all times.

Always include the operating instructions when you pass the 
product on to third parties.

1.3 Personal Protective Equipment

The following minimum Personal Protective Equipment (PPE) is 
recommended when interacting with Nuaire product:

Protective Steel Toed Shoes - 

when handling heavy objects.

 

Full Finger Gloves (Marigold PU800 or equivalent) - 

when 

handling sheet metal components. 

Semi Fingerless Gloves (Marigold PU3000 3DO or equivalent) 

- when conducting light work on the unit requiring tactile 
dexterity. 

Safety Glasses

 - when conducting any cleaning/cutting operation 

or exchanging filters. 

Reusable Half Mask Respirators 

- when replacing filters which 

have been in contact with normal room or environmental air.

Nuaire would always recommend a site specific risk assessment by a 
competent person to determine if any additional PPE is required. 

Summary of Contents for XBC75

Page 1: ...PARTS This unit contains fast moving rotational parts which may start automatically It is the sole responsibility of the installer to adequately guard these components REFER TO INSTRUCTION MANUAL Rea...

Page 2: ...ttenuator Length 900 900mm 6 Unit Roof No Suffix Standard Unit No Roof WP Twin Pitched Roof Factory Fitted 3 0 DELIVERY 3 1 Receiving Equipment All equipment is inspected prior to despatch and leaves...

Page 3: ...ensions mm and Weights kg Includes unit and 76mm high base frame Unit Code Unit Dimensions mm Control Dimensions mm Unit Weight kg Packed Weight kg A B C J K M E F G XBC75 H 2800 2126 876 940 740 940...

Page 4: ...ion Dimensions mm Weight kg Width Height Length 4 XBC75 H MD24V Motorised dampers 24V for Horizontal XBC75 Adapt Siemens AS control units 620 560 165 14 4 XBC85 H MD24V Motorised dampers 24V for Horiz...

Page 5: ...and Weights kg Unit Code Unit Dimensions mm Control Dimensions mm Unit Weights Packed Weights A B C J F H W D kg kg XBC75 H 2500 954 1416 610 894 60 954 2500 630 730 XBC85 H 3000 1000 1676 940 740 65...

Page 6: ...Weight kg Width Height Length 4 XBC75 V MD24V Motorised dampers 24V for Vertical XBC75 units with Adapt Siemens AS control 620 560 165 14 4 XBC85 V MD24V Motorised dampers 24V for Vertical XBC85 unit...

Page 7: ...ttery 5 2 Vertical Units e g XBC75 V XBC85 V 8 Vertical Unit Access All access panels are located on one side of the fan unit Note Unit must be isolated before panels are removed 9 Vertical Unit Overv...

Page 8: ...ndition Observe and record filter pressure drops after performance commissioning Typically filter dirty condition occurs when the initial filter clean readings have been increased by 125Pa If filter m...

Page 9: ...XBC75 H MD24V Vertical XBC75 V MD24V needs to be fitted after the silencer This ensures that breakout noise levels are kept to a minimum Fully interlocking parallel blades half inch diameter electrop...

Page 10: ...h the switch will trip When the pressure falls below this set value the switch returns to its resting position 6 4 2 Switch Wiring The cable gland is designed for cables with alternative sheath diamet...

Page 11: ...Air Temperature Sensor D Thermal Trip Electric Heater Only E LPHW Heater LPHW Models Only F Bypass Damper Drive G Condensate Pump Alarm H Fresh Air Temperature I Extract Fan Drive Health 6 5 2 Horizo...

Page 12: ...mer will produce an unpredictable result and is not recommended Volt free versions of the switched live signals are also available at terminals T33 T34 T35 T36 Link two contacts to activate the signal...

Page 13: ...MP terminals blocks 19 Removing Terminal Connections 7 7 4 Fitting Jumpers Terminal blocks can be connected together to increase the number of terminals at the same potential using push in jumpers In...

Page 14: ...cument Number 671786 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk XBC75 85 AS Control Installation Manual 7 8 Physical Layout Diagrams 7 8 1 Horizontal Units 25 Physical Layout Ho...

Page 15: ...15 09 06 21 Document Number 671786 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk XBC75 85 AS Control Installation Manual 7 8 2 Vertical Units 26 Physical Layout Vertical Units...

Page 16: ...ly CF83 1NA nuaire co uk XBC75 85 AS Control Installation Manual 7 9 Wiring Diagrams All inter connections between circuit boards blowers and sensors are made at the factory This diagram only shows th...

Page 17: ...17 09 06 21 Document Number 671786 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk XBC75 85 AS Control Installation Manual 28 Wiring Diagram Electric Heater...

Page 18: ...clockwise or anticlockwise It is recommended that the frost condition temperature is set at 4 C 8 2 Electric Frost Coils 8 2 1 Wiring The heater requires two connections the relay link up and the 400V...

Page 19: ...or cooling options 9 8 Frost Protection Should the internal temperature of the unit fall below a value defined in the commissioning variables the control will override all heating cooling logic to ope...

Page 20: ...ean with a soft brush or vacuum Check for signs of contamination 10 3 Annually Thoroughly inspect the unit and its components for corrosion acting immediately to treat restore any damaged areas All el...

Page 21: ...on plate attached to the unit casing Part Number Description XBC75 V FILTERKIT XBC75 Replacement G4 Panel Filters x4 776187 XBC75 Replacement Blower Assembly x1 18kg XBC75 H FILTERKIT XBC85 Replacemen...

Page 22: ...er and steps taken to prevent ingress of contaminants 4 0 OPERATIONAL LIMITS 4 1 It is important that the specified operational limits for the equipment are adhered to e g operational air temperature...

Page 23: ...23 09 06 21 Document Number 671786 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk XBC75 85 AS Control Installation Manual NOTES...

Page 24: ...24 09 06 21 Document Number 671786 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk XBC75 85 AS Control Installation Manual NOTES...

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