Firebird Expansion Vessel ACC014PVL

A 14 litre expansion vessel manufactured by Firebird for use in Firebird oil boiler installations. It absorbs the expansion of water as the system heats up, limiting pressure rise within the sealed heating circuit. The vessel is supplied under Firebird part number ACC014PVL.

• System pressure rises sharply or climbs towards the relief valve setting once the boiler is running.
• Water is discharging from the pressure relief valve during heating cycles.
• The pressure gauge swings noticeably between cold and hot states.
• The vessel feels heavy, waterlogged or shows corrosion and damp patches at the connection.
• The boiler locks out or drops to low pressure shortly after being topped up.

• Confirm the boiler model against the manufacturer's parts list to verify this vessel is the correct fitment.
• Check the capacity of the vessel currently installed and match it to 14 litre.
• Inspect the mounting position and connection arrangement on the existing vessel before removal.
• Confirm the system has been depressurised and drained as required before any work begins.