Name: Bosch FAS-420-TT2
Brand: Bosch
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FAS-420 series

FAS

-420 series

Aspiration smoke detector LSN improved

FAS‑420‑TP series | FAS‑420‑TT series

Operation guide

Table of Contents3
Safety6
General6
Introduction6
Warranty6
Copyright6
Disposal7
Technical Specifications7
Product Description7
Areas of Application9
System Overview12
Functions12
Aspiration Smoke Detector Series and Accessories Overview14
FAS-420 Connections15
FAS-420-TP1/FAS-420-TP2 Leds16
FAS-420-TT1/FAS-420-TT2 Leds16
FAS-ASD-DIAG Diagnostic Software17
Remote Indicators17
Device Mounting18
Measures for Reducing Operating Noise18
Pipe System Components19
Overview19
Air Sampling Openings20
Ceiling Lead-Through21
Air-Return Pipe for Pressure Areas and Atmospheric Loads22
Air Filters for Dusty Areas23
Water Separator for Humid Areas23
Detonation Safety Barrier for Potentially Explosive Areas24
Scope of Delivery: Smoke Aspiration System25
Technical Specifications27
FAS-420 Aspiration Smoke Detector Series27
FAS-420 Aspiration Smoke Detector Series - SL Variants28
Pipe System30
Smoke Aspiration System Components30
Planning31
Regulations32
Principles of Pipe Planning33
Airflow Monitoring36
Defining the Response Sensitivity37
Planning Limits38
Standard Pipe Planning39
Determining the Necessary Accessories39
Pipe Planning with Pipe Accessories39
Pipe Planning for Single-Hole Monitoring47
Simplified Pipe Planning53
Planning for Long Pipe Feed Lines56
Planning with Acceleration Openings57
Planning for Forced Airflow67
Project Planning with Branch Pipes70
Planning with Air Sampling Hose72
Planning with Air Return73
Power Supply74
Installing the Aspiration Smoke Detector75
General75
Installing the Detector Module76
Settings on the Unit Motherboard77
Setting the Detector Address77
Setting the Fan Voltage78
Setting the Fan Voltage (SL Variant)78
Number of Detector Modules78
Installing the Unit79
Connection to the Fire Panel81
Electrical Connection81
LSN Configuration82
Parameter Settings Via RPS (Remote Programming Software)82
Connecting an External Detector Alarm Display83
Data Logging83
Replacing a Detector Module84
Installation of the Pipe System85
Length Change of the Pipe System86
Air Sampling Openings87
Ceiling Lead-Through89
Monitoring with Forced Airflow89
Detection at Intake and Exhaust Openings89
Detection in the Bypass90
Air Filter91
Installing the Air Filter Box91
Filter Change on the Air Filter Box91
Air-Return Pipe92
Three-Way Tap93
FAS-ASD-WS Water Separator94
Detonation Safety Barrier95
Test Adapter95
Commissioning96
Preparation96
Calibrating the Airflow Sensor97
Air-Pressure-Independent Calibration97
Air-Pressure-Dependent Calibration98
Testing the Detector Module and Alarm Transmission99
Checking Malfunction Transmission99
Checking Airflow Monitoring99
FAS-420 Functional Test100
Preparations for the Functional Test100
Conducting the Functional Test101
Maintenance102
Visual Check102
Flash Code Table102
Flash - Error: Internal Voltage Monitoring102
Flashes - Error: Internal Voltage Monitoring103
Flashes - Error: Fan Voltage Monitoring103
Flashes - Error: Air Pressure Correction Voltage Monitoring104
Flashes - Error: Programming Error105
Flashes or 7 Flashes - Error: Internal Error 1 or Internal Error105
Flashes: Unit Initialization105
Detector Module and Alarm Transmission105
Pipe System106
Check the Airflow Sensor Calibration106
Airflow Monitoring108
Malfunction Transmission108
Maintenance Intervals108
Appendix109
DIP Switch Settings for Detector Addresses110
Air Pressure Correction Tables for Airflow Sensor Calibration111
Equipment Protection111
Space Protection (I-Pipe System)113
Space Protection (U, Double U, and H-Pipe System)115
Planning Without Filter116
Without any Other Pipe Accessories117
With Water Separator118
With Detonation Safety Barrier118
Planning with Air Filter119
Without any Other Pipe Accessories120
With Water Separator120
With Detonation Safety Barrier121
Commissioning/Service Test Record for FAS-420 Series Aspiration Smoke Detectors121
Index124

Brand	Bosch
Model	FAS-420-TT2
Category	Smoke Alarm
Language	English

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