S&S Northern Merlin 3000S Installation & Operation Manual Download Page 1

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User Manual

Merlin 3000S

Iss: 10 Page 1

Merlin

3000S

Demand Control Kitchen Ventilation System

INSTALLATION & OPERATION MANUAL

Please read these instructions carefully and retain for future use.

These instructions can be downloaded in electronic form on the product website (www.snsnorthern.com) or

a printed version can be ordered free of charge via S&S Northern Limited.

Summary of Contents for Merlin 3000S

Page 1: ...ion System INSTALLATION OPERATION MANUAL Please read these instructions carefully and retain for future use These instructions can be downloaded in electronic form on the product website www snsnorthe...

Page 2: ...g 4 Electrical Connections 5 Access Navigate Settings 10 Settings Switch 1 Overview 11 Settings Switch 2 Overview 12 Duct Temperature vs 0 10V Fan Output 13 Operation 15 Initial Power Up 15 Adjust the...

Page 3: ...ereunder is limited to replacement of the product with repaired product at the discretion of the manufacture This warranty is void if the product has been damaged by accident unreasonable use neglect...

Page 4: ...t cooking environment Conversely when only minimal gas is being used and the CO2 levels are low the Merlin 3000S will reduce the speed of the ventilation systems saving energy and money The optical se...

Page 5: ...ese terminals are used to receive an input signal from external air pressure switches or external current monitors These terminals are linked out as a factory setting Wiring to air pressure differenti...

Page 6: ...k as normally closed N C or normally open N O 8 FAN ENABLE Supply This terminal will switch when the key is turned on and off These terminals are linked to a fan switch speed controllers supplied sepa...

Page 7: ...CO2 Monitor will automate the speed of extract and supply fans dependant on CO2 detected levels detected 13 CO2 Zone 2 0 10V Input A 0 10VDC signal from a Merlin CO2 Monitor will automate the speed o...

Page 8: ...output unit pulse and high density pulse The Merlin 3000S requires a high density pulse wire 16 FIRE PANEL The terminal for fire alarms is detailed on the circuit board as FIRE PANEL These connections...

Page 9: ...R 1 2 are wired to the optical sensor supplied separately 19 DUCT TEMP ZONE 1 This is a low resistance connection to the duct temperature sensor to drive fans on an automatic varied speed based on ext...

Page 10: ...regulate external fan speed controllers supplied separately which can accept this control signal Access Navigate Settings There are two internal Settings Dipswitches 1 and 2 Turn the key to the Off P...

Page 11: ...ELECTION The Merlin 3000S has a four 4 combination emergency selection feature FANS OFF Extract Supply fan OFF default FANS ON Extract Supply fan ON at maximum speed SUPP ON Extract fan is OFF Supply...

Page 12: ...successful calibration If the system encounters a problem the screen may display the following Too many pulses Not enough pulses The 3000S will automatically increase the calibration time when it rece...

Page 13: ...DO NOT RECOMMEND A SUPPLY FAN SPEED HIGHER THAN EXTRACT FAN SPEED 5V EXTRACT FAN ENABLE The Merlin 3000S has a built in fan speed control ON OFF feature This can work as N O or N C NC SUPPLY FAN ENABL...

Page 14: ...p to Extract fan 0 10V out At minimum speed Supply fan 0 10V out At minimum speed 0 25 25 0 0 0 1 25 1 30 5 5 5 0 2 30 1 35 6 0 5 4 3 35 1 40 6 5 5 9 4 40 1 45 7 0 6 3 5 45 1 50 7 5 6 8 6 50 1 55 8 0...

Page 15: ...the fan s reach the speed set by the engineer After the fan s have reached the desired settings the system will continue as normal Under normal conditions The display will show fan speed When Fan Ove...

Page 16: ...Terminals When CO2 gas is detected above alarm level see CO2 Monitor manual the screen will display CO2 HIGH indication and the fans output will be at maximum speed When the CO2 gas returns below ala...

Page 17: ...return to normal Fault Status Screens EMERGENCY STOP If an emergency stop button remotely or direct is pressed the gas and contactor will shut off Fans can be driven in a combination upon emergency st...

Page 18: ...OTECTION The Merlin 3000S has a built in solid fuel protection feature When the system is switched off and the solid fuel protection is set to ON it will continue to instruct the system to check the C...

Page 19: ...Power Consumption 6 9W max AC Power Rating 100 240V 50 60Hz Maximum Current 28mA Extract Supply Fan Output 0 5A Max Internal Fuse T3 15A L250V Equipment Overvoltage Category II Pollution Degree 2 Equi...

Page 20: ...nces S S would greatly appreciate being informed of any errors or omissions that may be found in the content of this document For information not covered in this document or if there is a requirement...