AGS Merlin 1000S+i Guide

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 1
Gas Safety Products
Merlin 1000S+i Gas & Electric Utility Controller
Installation, Operation and Maintenance
Read these instructions carefully before operating or servicing

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 2
Table of contents
1GENERAL INFORMATION ...................................................................................3
2INSTALLATION & CONNECTION.........................................................................3
2.1Panel Mounting.............................................................................................................3
2.2 1000S+i Circuit Board Terminals...................................................................................3
2.1 POWER [1]......................................................................................................................4
2.2 GAS VALVE [2]...............................................................................................................4
2.3 ELECTRIC CONTACTOR [3]...........................................................................................4
2.4BMS OUT [4] ...................................................................................................................4
2.5 EM REMOTE [5] ..............................................................................................................4
2.6 GAS DETECTOR [6] ........................................................................................................4
2.7 FS 1/2/3/4 [7] .................................................................................................................4
2.8 CO2MONITOR [8] .........................................................................................................4
2.9 12VDC [9].......................................................................................................................5
2.10 INTERNAL BUZZER ...........................................................................................................5
2.11 PANEL TIMEOUT FACILITY ..............................................................................................5
3OPERATION ........................................................................................................5
3.1 SYSTEM ON & OFF .........................................................................................................5
3.2 LED STATUS .....................................................................................................................5
POWER ...............................................................................................................................5
GAS ON..............................................................................................................................5
ELECTRIC ............................................................................................................................6
TIMEOUT..............................................................................................................................6
EM STOP .............................................................................................................................6
GAS DETECTED ..................................................................................................................6
CO2 HIGH ..........................................................................................................................6
3.3 EMERGENCY SHUT OFF .................................................................................................6
3.4 BMS INTERGRATION.......................................................................................................6
3.5 FIRE ALARM INTERGRATION..........................................................................................7
3.6 FAN SWITCH INTERGRATION.........................................................................................7
3.7 AUTO RESET ....................................................................................................................7
1000S+i WIRING.........................................................................................................8

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 3
1GENERAL INFORMATION
The Merlin 1000S+i is a gas shut off, gas detection & electrical isolation utility controller.
The Merlin 1000S+i can receive connections from remote emergency shut-off buttons, gas
detectors and a CO2 monitor. It can also be integrated with a BMS and fire alarm.
It is recommended that the user reads this guide before using the system.
Please do NOT attempt to operate the unit until the contents of this document have been
read and are thoroughly understood.
2INSTALLATION & CONNECTION
2.1 Panel Mounting
The control panel is designed for surface mounting using 4 mounting screws.
Removing the cover on the panel gives access to the circuit board.
The PCB should be removed before drilling entry holes into the case.
A flush mount kit is available, comprising of a mounting bracket and decorative surround strip.
Contact your supplier for more information.
2.2 1000S+i Circuit Board Terminals

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 4
2.1 POWER [1]
A 110-120VAC Single Phase electrical supply should be supplied to the panel.
This should be externally fused at 3 Amps using a fuse or circuit breaker.
2.2 GAS VALVE [2]
This terminal provides a 110-120VAC 3 amp signal to the Gas solenoid valve.
Please consult the solenoid valve installation instructions for further information.
2.3 ELECTRIC CONTACTOR [3]
A 110-120VAC electrical output should be supplied to an electrical contactor.
This will be internally fused at 3 Amps using a fuse or circuit breaker.
2.4 BMS OUT [4]
Terminal connections are available on the circuit board for connections to Building
Management systems. [NC –Normally Closed] [COM - Common] [NO –Normally Open].
These are volt free dry contact connections.
This is a relay that changes state in alarm or when gas is on/off and can be used in conjunction
with the 12VDC output and other external relays that affect other devices and controls such as
purge fans, audible alarms etc.
2.5 EM REMOTE [5]
The Remote Emergency Shut Off terminal is linked out as a factory setting.
Remote emergency shut-off buttons should be volt free and wired to the Merlin panel using a
Plenum Security Cable. White, 18/2 (18AWG 2 Conductor), stranded, CMP or similar.
2.6 GAS DETECTOR [6]
These terminals are marked [+ -] and [ ] and should be volt free dry contact connections.
These can be wired to various Merlin gas detectors.
If no detector is being used, leave the terminal link in place.
For more information / multiple detector wiring, consult the gas detector manual.
2.7 FS 1/2/3/4 [7]
This Fan Switch Output terminal switches when the key is turned on and off.
This can be linked to a fan switch (panel supplied separately) which can provide power to fans
when the control panel is switched on.
2.8 CO2MONITOR [8]
This terminal can be wired to CO2monitor to shut off the system in the event of High CO2 levels.
If no CO2monitor is supplied leave the terminal link in [ ].
For more information, consult the CO2 Monitor manual.

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 5
2.9 12VDC [9]
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.
Please contact your supplier for further information.
2.10 INTERNAL BUZZER
Operates at 65dB measured 30cm from closed panel.
2.11 PANEL TIMEOUT FACILITY
The panel has a built-in Auto-shut down feature and it will turn itself off after a predefined time.
Auto-shut down timeout is selectable.
There are two Dip-Switches located on the inside facia labelled [Time1] and [Time2].
The gas supply will be cut off at desired time-out.
To select required timeout –configure Dip Switches as follows;
2 HOURS (FACTORY SET)
Time1 Off / Time2 Off
4 HOURS
Time1 On / Time2 Off
8 HOURS
Time1 Off / Time2 On
NO TIMEOUT
Time1 On / Time2 On (auto-shut down disabled)
3OPERATION
3.1 SYSTEM ON & OFF
1) Turn the key switch to ON position.
2) Gas & Electric LEDs will flash for *10 seconds.
3) Press the relevant service button to turn required utility on.
4) Turn the key switch to the OFF position to turn the panel off.
3.2 LED STATUS
POWER
When the system is connected to the mains supply, the Red LED of the AGS Logo located in
the bottom right corner of the panel will illuminate. When no power is present, this LED will not
light up.
RED = OK
OFF = No power to panel, a loose ribbon connection or the fuse may not be intact.
GAS ON
When the key switch is turned on, the gas valve will open and the green ‘Gas On’ LED will
illuminate.
GREEN = Gas On
OFF = Gas Off

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 6
ELECTRIC
When Electric service is turned on, the Electric LED will illuminate BLUE.
BLUE = Electric On
FLASHING = Electric Off, Electric button enabled
OFF = Electric Off, Electric button disabled
TIMEOUT
Under normal working conditions this LED is off. This LED will illuminate AMBER when auto-shut
down has occurred.
OFF = OK
AMBER = auto-shut down
EM STOP
If an emergency shut off button (either remote or on the panel) is pressed, the LED will
illuminate AMBER and the gas will be turned off. The EM Stop button must be re-set before
restarting the system.
OFF = OK
AMBER = EM Stop button pressed
GAS DETECTED
Under normal working conditions this LED is off. If the external Merlin detector connected
detects gas this will show RED and the Gas valve will turn off.
OFF = OK
RED = Gas detected.
CO2 HIGH
Under normal working conditions this LED is off. If the concentration of CO2 in the air is at
alarm level (relevant detector required), the LED will show RED and the Gas valve will turn
off.
OFF = OK
RED = the concentration of CO2 is at alarm level.
3.3 EMERGENCY SHUT OFF
The Emergency shut off button is located on the front of the panel. There is also a facility for
remote shut off buttons to be wired in series.
The Emergency shut off button(s) will cut off the gas supply when activated.
To reinstate the system, the Emergency shut off button(s) will need to be reset and the panel
restarted.
3.4 BMS INTERGRATION
The Merlin panel 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.
There is a dip-switch located on the inside facia of the panel labelled [BMS SEL].
This is factory set in the OFF position which signals the BMS on gas on/gas off.
When switched to the ON position, the panel will only signal the BMS on a fault, i.e. CO2 high
level detected, gas detected, EM Stop pressed, etc.

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 7
3.5 FIRE ALARM INTERGRATION
The Merlin 1000S+i can be integrated with a fire alarm to shut the gas supply automatically in
the event of a fire.
The volt free fire alarm signal can be wired in series with any remote emergency shut off
buttons.
If there are no remote emergency stop buttons installed, wire this directly to the terminal
marked [EM REMOTE].
3.6 FAN SWITCH INTERGRATION
There is the facility to connect a Fan Switch (FS1 or FS2 sold separately).
The Fan Switch provides the facility to turn the fan(s) ON when the Merlin panel is on and turn
the fans OFF when the panel is switched off.
There is a dip-switch located inside the facia of the Merlin panel labelled [EM SEL].
This is factory set in the ‘OFF’ position which instructs the system to shut down the fan(s) and gas
supply on activation of the Emergency shut off button(s).
On installation, this can be switched to the ‘ON’ position, this will instruct the system to leave the
fans on and only shut off the gas supply on activation of an Emergency shut off button.
Note: This option is not available if a Fan Switch is not installed.
3.7 AUTO RESET
The Merlin 1000S+i has a built-in auto reset feature.
There is a dip-switch located on the inside facia of the Merlin panel labelled [Auto Reset].
This is factory set in the ‘OFF’ position, this means, if you experience a power cut, the panel has
to be restarted manually.
This can be switched to the ‘ON’ position and will instruct the system to restart automatically
when power is restored following a power cut or similar situation.

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 8
1000S+i WIRING
1) [POWER] Mains Input 110-120VAC Single Phase.
2) [GAS VALVE] Gas Solenoid Valve Power Output, 110-120VAC, Max 3A.
3) [ELECTRIC CONTACTOR] Electric Contactor Power Output, 110-120VAC, Max 3A.
4) [BMS OUT] Building Management System output contacts.
Normally Closed, Common and Normally Open. Max.1A @ 110-120VAC.
5) [EM REMOTE] Remote EM Stop buttons and Fire Alarm input wired in series VOLT FREE
(Purchased separately).
6) [GAS DETECTOR] Methane, CO or LPG Detector, power supply and VOLT FREE
(Purchased separately).
7) [FS1/2/3/4] Fan Switch output (purchased separately).
For wiring instruction see Fan Switch user manual.
8) [CO2 MONITOR] CO2 Monitor (purchased separately). VOLT FREE
9) [12VDC] Permanent 12VDC output when there is power at the panel. 50mA max
Panel Net Weight: 1187g
Panel Dimensions: (W) 10” x (L) 7” x (D) 2.4”
PLEASE NOTE:
MAINS AND LOW WIRING SHOULD NOT RUN IN THE SAME CONDUIT AS PER THE LOW VOLTAGE DIRECTIVE

Merlin 1000S+i Gas & Electric Utility Controller User & Installation Manual
Rev: 04 Date: 22-10-18 9
INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF ELECTRICAL & ELECTRONIC EQUIPMENT
When this product has reached the end of its life it must be treated as Waste Electrical & Electronics Equipment (WEEE).
Any WEEE marked products must not be mixed with general household waste, but kept separate for the treatment,
recovery and recycling of the materials used. Please contact your supplier or local authority for details of recycling
schemes in your area.
CONTACT US:
AGS Head Office
Tel: [phone]
Fax: [phone]
[e-mail]
American Gas Safety is the owner of this document and reserves all rights of modification without prior notice.