VESDA Maintenance Guide VESDA
20 www.xtralis.com
8.1.3 Replacing the VESDA VLP and VESDA VLS Chassis
Select correct replacement unit
There are four Chassis/Manifold replacement units available for VESDA VLP and VESDA VLS Detectors.
Refer to Table 8-1 below to select the correct part for your detector.
Table 8-1: Part Number Selection
Conditions Part Number
Legend:
l A: VSP-006-NEN or VSP-009-NEN Label (when fitted)
l B: Chassis / Manifold Assembly
l C: Turbulators
VSP-006(VLP Chassis/Manifold Assembly(EN54-20))
VSP-009(VLSChassis/Manifold Assembly(EN54-20))
VSP-006-NEN(VLP Chassis/Manifold Assembly(Non-EN54-20))
VSP-009-NEN(VLSChassis/Manifold Assembly(Non-EN54-20))
If manifold is fitted with turbulators AND there is NO VSP-006-NEN label
AND firmware version is greater than or equal to 3.17.00.
X
If manifold is NOT fitted with turbulators OR Chassis is labelled with
VSP-006-NEN label OR firmware is less than or equal to 3.15.00.
See
Notes
X
If manifold is fitted with turbulators AND there is NO VSP-009-NEN label
AND firmware version is greater than or equal to 3.17.00.
X
If manifold is NOT fitted with turbulators OR Chassis is labelled with
VSP-006-NEN label OR firmware is less than or equal to 3.15.00.
See
Notes
X
Notes:
l In most countries, it is possible to use an EN 54-20 compliant chassis when replacing pre-EN54-20 chassis
(without turbulators). However, under this condition, it may be necessary to increase the size of the sampling
holes to increase the airflow rate (i.e. minimum 20 liters/min) for the new chassis to normalize. Normalization is
the commissioning process whereby the detector establishes the “normal” flow rate. Once normalized, the
detector monitors for deviations in flow rate from the established norm.
l For France, pre-EN54-20 chassis (without turbulators) and non-EN54-20 chassis are configured to work with
the Fire-Fault (FF) LEDs. Under this condition, it is essential to use a non-EN54-20 chassis to ensure correct
operation of the FF LEDs.
To Next Page
Loading...
