Related Manuals for S&S Northern Merlin CT1750
Summary of Contents for S&S Northern Merlin CT1750
- Page 1 Merlin CT1750 User Guide Gas Safety Products Merlin CT1750 Gas Proving & Interlock System User Guide Please read this guide carefully and retain for future use. Rev: 07 05-19...
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Page 2: Table Of Contents
Merlin CT1750 User Guide Table of contents General Information ..................3 Panel Mounting ......................3 Circuit Board Terminals ..................4 POWER ........................... 4 GAS VALVE ........................4 FAN 1 & 2 PD SW (Supply & Extract Fan PD Switches) ..........4 BMS OUT ......................... -
Page 3: General Information
The Merlin CT1750 is a ventilation interlock panel with gas pressure proving and features analogue output signals to regulate the speed on the fans. The system comprises of a control panel and a gas pressure sensor. The Merlin CT1750 can receive connections from remote air pressure differential switches or external current monitors, remote emergency shut-off buttons, gas detectors and a CO2 monitor. -
Page 4: Circuit Board Terminals
Merlin CT1750 User Guide Circuit Board Terminals POWER A 100-240VAC electrical supply should be supplied to the panel. This should be externally fused at 3A. GAS VALVE A 100-240VAC output connection for a gas solenoid valve. FAN 1 & 2 PD SW (Supply & Extract Fan PD Switches) These terminals are used to receive an input signal from external air pressure switches or external current monitors. -
Page 5: Fire Panel
The terminal for fire alarms is detailed on the circuit board as [FIRE PANEL]. These connections are linked out as a factory setting. Fire alarms should be volt free and wired to the Merlin CT1750 using two- core cable. CO SENSOR These can be wired to a Merlin carbon monoxide sensor as shown. -
Page 6: 12Vdc
Merlin CT1750 User Guide 2.11 12vDC This is a permanent 12v DC output when there is power at the panel and can be used to create a relay switch with the BMS relay output. This is normally used to power a PM2 current monitor. (Supplied separately) Contact your supplier for more information. -
Page 7: Bms Integration
BMS integration The Merlin CT1750 can be integrated with a BMS to make or break a circuit on gas on/gas off, (valve open or valve closed). This will tell the BMS whether or not power is being sent to the solenoid. -
Page 8: Setting The Minimum & Maximum Speed Of Fans
Merlin CT1750 User Guide Setting the minimum & maximum speed of fans The minimum and maximum fans speed can be customised Using the [MIN] and [MAX] buttons located inside the facia of the CT1750. Upon pressing either the MIN or MAX speed button, the speed display will flash with the current minimum or maximum fan speed. -
Page 9: Panel Led Status
Gas On When the fans are operational and the key switch is turned on, the Merlin CT1750 will check the installation for gas leaks. If gas proving is successful, the gas valve will open and the green ‘Gas On’ LED will illuminate. - Page 10 Merlin CT1750 User Guide CO Sensor Under normal working conditions this LED is off. If the external Merlin detector connected detects gas this will show RED. The Gas valve will close and the panel will send a signal to the fan controller to increase the fan speed.
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Page 11: Ct1750 Wiring Spec
Merlin CT1750 User Guide CT1750 Wiring Spec POWER: Mains Electrical Input 100-240VAC. GAS VALVE: Gas Solenoid Valve Power Output, 100-240VAC. FAN 1 PD SW: Fan 1 pressure differential switch or current switch. VOLT FREE INPUT FAN 2 PD SW: Fan 2 pressure differential switch or current switch. VOLT FREE INPUT BMS OUT: output contacts. -
Page 12: Manufacturer's Warranty
Merlin CT1750 User Guide Manufacturer’s Warranty 3 Year Limited Warranty Warranty coverage: The manufacturer warrants to the original consumer purchaser, that this product will be free of defects in material and workmanship for a period of three (3) years from date of purchase. The manufacturer’s liability hereunder is limited to replacement of the product with repaired product at the discretion of the manufacture.