Can two simultaneous taps be used with a wall-hung water?

Yes, in 18 Litre models, however this is not generally suggested.

What are the advantages of wall-hung water heaters over floor standing water heaters?

  • Instant hot water
  • Continuous hot water
  • Low gas consumption
  • Less space required
  • ۱۰۰% hygienic hot water

What is the minimum chimney pipe height?

۳ meters, however forced flue models do not have any restriction.

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.

What is the maximum distance between the water heater and the point of use?

Between 7 and 10 meters depending on various factors such as water heater model, piping and inlet temperature.

Can a water heater be used for two floors?

No, this is not suggested.

Is it possible to have installations in bathrooms, toilets or lockers rooms?

Installations in these areas are not done by BIG and void the warranty due to operating dangers.

Are the installation requirements for all the water heaters the same?

No, higher capacity water heaters have more installation restrictions.

What does the free installation include?

Installation of the water heater on the wall, the connections for gas, water, and the chimney are included. All piping must be prepared before hand at the place of installation at the cost of the customer.

How much change to the current piping is required, in order to upgrade from a floor standing water heater to a wall-hung water heater?

Yes, minor piping extension is required.