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Merlin
RS Series
Safety & Health Monitoring Room Sensors
INSTALLATION & OPERATION
Please read these instructions carefully before use and retain for future reference.
These instructions can also be downloaded in electronic form on the product website.
snsnorthern.com
info
snsnorthern.com
S&S NORTHERN LTD – PR7 7JN, UK Tel: +44 (0) 1257 470983 -
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Table of Contents
Related Manuals for S&S Northern Merlin RS Series
Summary of Contents for S&S Northern Merlin RS Series
- Page 1 Merlin RS Series Safety & Health Monitoring Room Sensors INSTALLATION & OPERATION Please read these instructions carefully before use and retain for future reference. These instructions can also be downloaded in electronic form on the product website. snsnorthern.com info snsnorthern.com S&S NORTHERN LTD –...
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Page 2: Table Of Contents
Merlin RS Installation & Operation Manual CONTENTS IMPORTANT INFORMATION ....................3 Manufacturer’s Warranty ....................3 INSTALLATION ......................4 General Information ............................4 Coverage ................................ 4 Positioning ..............................4 Mounting Instructions ........................... 5 PCB Overview ..............................5 Power Wiring ..............................6 +10V Output Wiring ............................ -
Page 3: Important Information
Merlin RS Installation & Operation Manual IMPORTANT INFORMATION Take extra care where this symbol is used to understand the nature of any potential hazards and how to avoid them. Before any installation, use or maintenance, read this manual carefully. This product is for Dry Environment Use only. Avoid prolonged use in dusty environments. -
Page 4: Installation
Merlin RS Installation & Operation Manual INSTALLATION General Information Failure to observe the following may cause injury to persons and/or property. The RS detector series is to be installed in non-classified, non-hazardous, permanent locations and is intended to continuously monitor the ambient air for carbon dioxide (CO ) levels, temperature (°C) and relative humidity (rH%) providing an analogue and/or digital representation of the levels. -
Page 5: Mounting Instructions
Merlin RS Installation & Operation Manual Mounting Instructions Remove the front cover by removing the screw underneath the housing using an M3 socket wrench. Mark mounting holes ensuring surface is flat to avoid distortion. Using the backplate, mark points and drill 0.2”... -
Page 6: Power Wiring
Merlin RS Installation & Operation Manual Power Wiring Consider voltage drops due to cable resistance and strip the cables as short as possible ensuring bare wires, e.g., wire shields, do not contact with the circuit board (risk of short-circuit). 230V AC POWER / LINE IN 24V IN AC/DC +10V Output Wiring A linear +10V output is normally used to regulate external fan speed controllers (supplied separately). -
Page 7: Vfc Relay Wiring
Merlin RS Installation & Operation Manual VFC Relay Wiring This is a dry contact/volt free connection to a BMS (building management system) or central control panel to send an alarm signal upon the defined CO2 level. This terminal can be used in conjunction with other external relays that affect other devices, and controls such as purge fans, audible alarms, strobe/beacons etc. -
Page 8: Analog Configuration Switches
Merlin RS Installation & Operation Manual Analog Configuration Switches LABEL ACTION OPTION DEFAULT NOT USED ON: 0-2000 ppm (CO2) Range* OFF: 0-5000 ppm 5000ppm ON: 1000 ppm (CO2) Low Level Warning OFF: 1500 ppm 1500ppm ON: 1500 ppm (CO2) High Level Warning OFF: 2800 ppm 2800ppm ON: NO (Normally Open) -
Page 9: Operation
Merlin RS Installation & Operation Manual OPERATION Warning Levels Before leaving the device for normal operation, check configuration for proper settings. After connecting power, the device will enter a warm-up period to allow the device to establish connections and sensor elements to stabilize before a valid reading/output. There are no warnings/alarms for Temperature or Humidity levels. -
Page 10: Technical Specification
Merlin RS Installation & Operation Manual TECHNICAL SPECIFICATION Mounting Wall Mounted Entry 1/2” 12.5mm DIA Rear Entry Mechanical Size (W x H x D) 86 x 114 x 35mm (Low Profile RS - 86 x 114 x 25mm) Weight (Max) 0.164Kg max Enclosure ABS UL Flame retardant –... - Page 11 Merlin RS Installation & Operation Manual Page intentionally left blank. REV 06 Page 11 of 12...
- Page 12 Merlin RS Installation & Operation Manual Please pass this manual to the system owner / user. Date of Installation: Installation Location: Organisation: Stamp/Signature of the installer: We recommend all S&S equipment be commissioned by competent/trained engineers to ensure correct installation and operation. We strongly recommend the response and alarm signals are tested and validated once installed.
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