◦ Balanced‑flue installations in new airtight homes, high‑efficiency residential builds, and Passive House–type envelopes.

◦ Suitable for all NZ wind zones and roof configurations compliant with AS/NZS 2918.

◦ Appliances tested to AS/NZS 2918.

◦ Ideal for colder climates requiring combustion air drawn from outside the thermal envelope.

◦ Supports vertical installations with offset capability up to 45° where appropriately braced.

◦ Applicable in seismic zones, including high wind, when braced in accordance with manufacturer instructions.

◦ Option bracing systems for roof and wall support in exposed conditions.

◦ Not suitable for insert fireplaces with air‑cooled zero‑clearance boxes, unless specifically approved.

◦ For solid‑fuel appliances only; components cannot be mixed with other flue brands or systems.

◦ Maximum two sets of 45° elbows, with mandatory bracing when offsetting the AFS flue.

◦ Insulated AFS+ pipe sections cannot be cut; only manufacturer lengths may be used.

◦ Clearances must be strictly maintained: 25 mm (pipe), 50 mm (joints), and 100 mm for stove pipe.

◦ Air intake connections must be fully sealed to prevent vacuum loss and combustion air starvation.

The VisionLINE air flue system is tested to As/NZS 2918 Domestic solid fuel burning appliance, installation.
When designed and installed in accordance with manufacturer instructions, the AFS+ supports compliance with the following NZBC clauses:

• B1 Structure:
  Withstands wind loads, tensile/compressive forces, and roof penetration stresses per CE‑EN 1856 testing and AS/NZS 2918 Appendix F/B.
• B2 Durability:
  Stainless steel construction and CE‑certified ceramic insulation ensure long-term durability in high‑temperature environments.
• C3 Fire Affecting Areas Beyond Source:
  Certified clearances minimise ignition risk to adjacent materials per AS/NZS 2918.
• E2 External Moisture:
  Twist‑lock sealed system allows compliant, weather‑tight roof penetrations.
• F2 Hazardous Building Materials:
  No hazardous emissions in normal operation; uses certified ceramic insulation.
• G4 Ventilation:
  Supplies dedicated combustion air from outdoors, meeting ventilation needs for airtight buildings.

The Visionline AFS system has been supplied for residential solid fuel installation in Australia and new Zealand since at least 2020.