NuAire NEPTUNE T-AT Installation Manual Download Page 1

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03. 09. 20. Document Number  671935

Nuaire | 

Western Industrial Estate 

Caerphilly 

CF83 1NA 

|

 

nuaire.co.uk

NEPTUNE T-AT

Thermal Wheel AHU with  
Adapt Trend (AT) Control 

Installation Manual

EMC Directive

 

2014/30/EU

LVD Directive

 

2014/35/EU

1.0 SAFETY INFORMATION

• 

The provision of the electrical supply and the connection of the unit to the mains 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.

• 

If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or 
similarly qualified persons in order to avoid a hazard.

• 

Precautions must be taken to avoid the back-flow of gases into the room from the open flue of 
gas or other fuel-burning appliances.

• 

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.

Summary of Contents for NEPTUNE T-AT

Page 1: ...replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard Precautions must be taken to avoid the back flow of gases into the room from the open flue of g...

Page 2: ...tonal noise generation Fan pressure transducers shall be fitted Connect control only for constant pressure flow control and energy monitoring All hinged access panels shall be lockable and removable...

Page 3: ...ual unit lifting plan and risks must be assessed by competent personnel before moving the unit 1 Typical Methods of Lifting To ensure that no roof damage occurs additional timber packaging must be use...

Page 4: ...cks or exhaust ventilators Once assembled and in position sufficient free space must be available adjacent to the unit for future inspection maintenance component service repair and replacement and co...

Page 5: ...Ensure the belt has been tensioned prior to operating the unit by moving the belt drive motor from its transport to operating position 4 7 Weather Resistant Units The units are supplied in multiple se...

Page 6: ...may be attached to the fan or motor base frame and that all traps are primed Close all access door seals for damage and replace any panels that have been removed IMPORTANT If a frost coil is not fitt...

Page 7: ...condensate tray may be inspected and cleaned if necessary The LPHW and Electrical heater settings coil bleed and drain and all other control adjustments are similarly accessible Side access where poss...

Page 8: ...UPPLY SUPPLY CONTROLS Access 600mm Top View SUPPLY SUPPLY CONTROLS Access 600mm Top View Open Inlet Open Inlet Open Supply Open Supply Open Supply Left Hand Unit Right Hand Unit Open Extract Open Extr...

Page 9: ...r Supply Details FLC Denotes any Character These heater models require a separate power supply for the electric heater section with an appropriate over current protection device These heater models re...

Page 10: ...Di AI DO AO Fresh Air Sensor 1 4 5 1 Supply Air Sensor 2 6 7 1 Return Room Air Sensor 3 8 9 1 Input 4 4 10 11 1 Input 5 5 12 13 1 Pressure Sensor 6 14 15 1 Alarm Circuit 1 Fan Heater 7 16 17 1 Alarm C...

Page 11: ...se the number of terminals at the same potential using push in jumpers In these cases the terminals are treated as one conductor 6 7 5 Jumper Removal Insert the operating tool blade between the jumper...

Page 12: ...ernal Connection are not shown for clarity 0 24V 15V 0 15V 230V 400V 400V 3ph 50Hz Main Power Supply Overcurrent Protection By Others Local Rotary Lockable IP66 67 Isolator L1 E L2 L3 N L1 L2 L3 N T1...

Page 13: ...ump Fuse 1A Aux Fuse 1A 24Vac Fuse 1 6A Lighting Thermal Wheel Terminal Extra Low Voltage SL Enable UI5 0 10V Room Temperature Sensor Optional Note1 Anti Condensation Heater Thermostat Supply Fan Extr...

Page 14: ...eel 0 24V 15V 0 15V 230V 400V 400V 3ph 50Hz Main Power Supply Overcurrent Protection By Others Local Rotary Lockable IP66 67 Isolator L1 E L2 L3 N L1 L2 L3 N T1 T2 T3 N 1 2 3 4 Key Factory Connection...

Page 15: ...the pressure differential between the extract air and atmosphere reaches the constant pressure setpoint The pressure sensor is a 0 10v 0 1000Pa sensor on the iQ4E input 6 7 7 Filter Differential Press...

Page 16: ...6 according to the following strategy If the room temperature is more than 5 C adjustable from the setpoint and free cooling or free heating is not available then partially recirculate the air This ai...

Page 17: ...rRecirc Force Recirc damper to recirc mode On Off Off 52 Damper NoRecirc Force Recirc damper out of recirc mode On Off Off Knob No Name Description Range Default 2 Run on Time Run on timer value 0 360...

Page 18: ...he maximum voltage to be supplied to the fan motor 6 10 v 10 v 41 CP Loop Gain Constant Pressure Loop Gain 0 50 0 5 42 IO Damper Delay Delay to allow inlet outlet dampers to open 0 300 sec 0 sec 43 Bo...

Page 19: ...de concentration and temperature of the air The space sensors have additional options of humidity monitoring and a 4 digit display The display will show the measured values in succession The duct sens...

Page 20: ...ot to damage the finned surface and any cleaning fluids should be rinsed away with water A compressed air line may be used to blow out any solids between fins Do not probe the coil fin block with meta...

Page 21: ...re fitted controls will also stop heating if a fan or heater failure is detected 9 9 Bulkhead Lights Ensure that lights are switched off and isolated before checking or changing the lamp 9 10 General...

Page 22: ...uired Electric heater elements are protected by a fail safe over temperature switch which will disconnect the heater supply if a temperature of 80 C is reached Once the elements cool the switch will r...

Page 23: ...ng coils and other metallic items can be segregated and fully recycled EPP plastic ducting nylon corner pieces plastic heat exchangers packaging material and other plastic components can be segregated...

Page 24: ...ve separate provision for support 4 3 Flanges and connection spigots are provided for the purpose of joining to duct work systems They must not be used to support the ductwork 4 4 Local Environment Hu...

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