Determining The Necessary Accessories; Pipe Planning With Pipe Accessories - Bosch FCS‑320‑TM Series Operation Manual

Conventional Aspiration smoke detector
4.6.1

Determining the Necessary Accessories

As accessory components, e.g. filters, have a particular effect on the dimensions of pipe
planning, the appropriate accessory must be selected for the application concerned in
advance. Retrofitting an accessory, e.g. a fine filter, is largely only possible if a certain reserve
is planned in advance.
The following components must be taken into account in this regard:
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See Smoke Aspiration System Components, page 26
4.6.2

Pipe Planning with Pipe Accessories

For the purpose of pipe system planning, the following planning table is available for all
selected pipe accessories.
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Notice!
In order to improve the detection quality of a smoke aspiration system, an area can be
monitored with more detection points than required by national guidelines. However, to
calculate the necessary sensitivity of an aspirating smoke detector, the number of aspiration
points required by the standard must be used.
Procedure
In the following example, a plan with air filter with 4 openings, not fitted with any other
accessories, should satisfy class B. The red shaded areas show the potential plans with
different pipe shapes and fan voltage.
1.
2.
3.
Bosch Sicherheitssysteme GmbH
Air filter
Water separator
Three-way-tap
Planning without air filter
Planning with FAS‑ASD‑FL air filter
General
Selection:
Select the planning table with or without
air filter, as applicable.
Result:
Planning table and specified air filter
Selection:
Select the number of air sampling
openings from the planning table. Note
the possible sensitivity classes.
Result:
Specified detection module with specified
setting and alarm threshold
Selection:
Select the sensitivity (sensitivity class) of
the system according to the gradation
described in Defining the Response
Sensitivity, page 31 .
Result:
Specified sensitivity class in accordance
with EN 54‑20 or ISO 7240-20
Example
Select the planning table with air filter,
Planning with Air Filter
In the Planning with Air Filter table, select
the column with four air sampling openings
(Number of air sampling openings, 4)
In the Planning with Air Filter table, select
the response sensitivity you require (class
A, B or C) from the column highlighted in
red. You must select the class that
corresponds to the configured sensitivity.
Operation guide
Planning | en 33
2020.04 | 2.1 | F.01U.130.928