What are the chimney size requirements for the different models?

Based on the Iranian standards and building guidelines as well as the model requirements the chimney size for various models are as follows:

  • For 8 and 10 Liter models, 10 cm chimney diameter
  • For other models with the exception of forced flue, 15 cm chimney diameter

Other factors may affect the reduction in chimney size requirements, however these can only be approved by a certified BIG servicemen and after an on-site consultation.