S&S Northern Merlin FAB-1 User manual

Merlin FAB-1 User Guide
Rev: 07 05-19 1
Gas Safety Products
Merlin FAB-1
User Guide
Please read this guide carefully and retain for future use.

Merlin FAB-1 User Guide
Rev: 07 05-19 2
Table of contents
1General Information 3
1.1 Panel Mounting 3
2Circuit Board Terminals 4
2.1 POWER 4
2.2 TO FIRE PANEL 4
2.3 TO MERLIN PANEL 4
2.4 Building Management System (BMS) Connections: 4
3Installation & Operation 5
3.1 System ON and OFF 5
3.2 Timeout Facility: 5
4Panel LED Status 5
5FAB-1 Circuit Board Diagram 6
6Manufacturer’s Warranty 8

Merlin FAB-1 User Guide
Rev: 07 05-19 3
1General Information
The Merlin FAB-1 is a fire alarm bypass panel.
The Merlin FAB-1 is designed to allow gas to remain on- for a pre-determined time during a fire
alarm test. The FAB-1 should be activated before a fire alarm test to allow the gas supply to
remain on. This is done by turning the key switch on the fascia of the panel as far clockwise as
possible. Once released the key will return to its original position and a countdown timer is
activated. The countdown timer can be adjusted inside the panel to allow the gas supply to
remain on for between 10 and 45 minutes.
When the FAB-1 is in operation the panel will beep every 20 seconds until there is 5 minutes
before the end of the timeout, the FAB-1 will then beep every 10 seconds and the bypass LED
will start to flash. During the bypass time gas can still be shut off, pressing the emergency shut
off button will close the gas solenoid valve.
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.
1.1 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.
Important Warning Statements
Never ignore your device when in alarm.
This device requires a continual supply of electrical power –it will not work without power.
This device should not be used to substitute proper installation, use and/or maintenance of fuel burning
appliances including appropriate ventilation and exhaust systems.
Your product should reach you in perfect condition, if you suspect it is damaged, contact your supplier.
Information on waste disposal for consumers of electrical & electronic equipment. (EEE)
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.

Merlin FAB-1 User Guide
Rev: 07 05-19 4
2Circuit Board Terminals
2.1 POWER
A 100-240VAC electrical supply should be supplied to the panel.
This should be fused at 3A and connected to the terminals marked [LNE POWER].
2.2 TO FIRE PANEL
The terminal for a fire alarm panel is detailed on the circuit board as [TO FIRE PANEL], fire alarms
should be volt free using a two core cable.
2.3 TO MERLIN PANEL
The terminal for the connection to a Merlin control panel is detailed as [TO MERLIN PANEL].
2.4 Building Management System (BMS) Connections:
Terminal connections are available on the circuit board for Building Management systems.
Detailed on the circuit board as [BMS OUT - N/C, COM and N/O] (Normally Closed / Common /
Normally Open).
These are volt free connections

Merlin FAB-1 User Guide
Rev: 07 05-19 5
3Installation & Operation
3.1 System ON and OFF
Turn the key switch to [ON] position.
To turn the system off, turn the key switch to [OFF] position.
3.2 Timeout Facility:
The bypass time can be adjusted using the switches [S1] inside the panel
on the circuit board.
Please see below the timeout variation you can select.
S1
S2
S3
Time (minutes)
Off
Off
Off
10
Off
Off
On
15
Off
On
Off
20
Off
On
On
25
On
Off
Off
30
On
Off
On
35
On
On
Off
40
On
On
On
45
4Panel LED Status
Power
When the system is connected to the Mains Supply, the LED of the S&S Northern logo will
illuminate RED.
Bypass On
This LED will illuminate GREEN when the key switch on the fascia of the panel has been turned
to [ON].
Five minutes before the timeout facility is about to end, the [Bypass On] LED will start to flash.
When the bypass time has finished the LED will turn off.

Merlin FAB-1 User Guide
Rev: 07 05-19 6
5FAB-1 Circuit Board Diagram

Merlin FAB-1 User Guide
Rev: 07 05-19 7

Merlin FAB-1 User Guide
Rev: 07 05-19 8
6Manufacturer’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. This
warranty is void if the product has been damaged by accident, unreasonable use, neglect, tampering or other causes
not arising from defects in material or workmanship. This warranty extends to the original consumer purchaser of the
product only.
Warranty disclaimers: Any implied warranties arising out of this sale, including but not limited to the implied warranties of
description, merchantability and intended operational purpose, are limited in duration to the above warranty period. In
no event shall the manufacturer be liable for loss of use of this product or for any indirect, special, incidental or
consequential damages, or costs, or expenses incurred by the consumer or any other user of this product, whether due
to a breach of contract, negligence, strict liability in tort or otherwise. The manufacturer shall have no liability for any
personal injury, property damage or any special, incidental, contingent or consequential damage of any kind resulting
from gas leakage, fire or explosion. This warranty does not affect your statutory rights.
Warranty Performance: During the above warranty period, your product will be replaced with a comparable product if
the defective product is returned together with proof of purchase date. The replacement product will be in warranty for
the remainder of the original warranty period or for six months –whichever is the greatest.
CONTACT US:
S&S Northern Head Office
Tel: [phone]
Fax: [phone]
www.snsnorthern.com
[e-mail]
South East Division
Tel: [phone]
Fax: [phone]
[e-mail]
S&S Northern is the owner of this document and reserves all rights of modification without prior notice.