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'Sprinkler zone'
A sprinkler system is a piping system that is terminated at several locations with
sprinkler heads. It is normally fed by the public network of hydrants.
The sprinkler station is installed directly after the house feed. It separates the
sprinkler network from the hydrant network due to overpressure in the sprinkler
network.
The sprinkler station signals when the sprinkler network is opened somewhere and
water begins to flow. This condition is reported to the fire control panel via a
contact (or two as an option) and triggers an alarm with immediate response from
the fire brigade.
In larger sprinkler systems, the piping system is distributed over several floors and
the supply network has an outlet on every floor. Flow rate indicators are built into
each outlet.
The flow rate indicators generate a signal when there is a flow.
Figure 19: Information flow for sprinklers
D ↑ 'Detection tree'
F Flow rate indicator
S Sprinkler station with one or two contacts (cause)
H Hydrant network
ZF 'Flow switch zone'
ZS 'Sprinkler zone'
Arrows Signal transfer
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