Description

Kentec Sigma A-XT Operating & Installation Manual

The Sigma A-XT Manual covers the single-area variant of the Kentec extinguishant control panel range. The A-XT is designed for protecting a single hazard area — one server room, one switchgear cabinet, one control room — with a self-contained suppression release function.

What the manual covers

• Cabinet mounting and AC mains wiring
• Battery sizing for the suppression standby requirement
• Detection circuit wiring (cross-zoned for false-alarm protection)
• Manual release switch wiring
• Abort switch wiring and timing
• Pre-discharge sounder and beacon wiring
• Discharge solenoid wiring with discharge-confirmation feedback
• Lockout switch for maintenance work
• Front-panel operation during normal, alarm, pre-discharge and discharged states
• EN 12094-1 compliance notes

Who should use this manual

This manual is for fire suppression commissioning engineers installing Sigma A-XT panels. Suppression commissioning is a specialised competence; engineers new to extinguishant systems should not commission these panels without dedicated training.

Single-area vs multi-area

For installations protecting multiple hazard areas, the multi-area Sigma XT is more appropriate. The A-XT is the cost-effective choice when only one area requires gas suppression release control.

Related Sigma manuals

See the full Sigma XT extinguishant section for related variants.

Fire suppression training

BH Courses run a dedicated fire suppression training programme covering the Sigma XT range and EN 12094-1 commissioning workflow.