Fer FERSYSTEM TECH 31 C Instructions For Use, Installation And Maintenance page 20

FERSYSTEM TECH 31 C
Connection with separate pipes
fig. 24 - Examples of connection with separate pipes ( = Air / = Fumes)
For connection of the separate ducts, fit the unit with the following starting accessory:
041039X0
Starting accessory for separate ducts
Before proceeding with installation make sure the maximum permissible length has not been exceeded, by means of a
simple calculation:
1. Establish the layout of the system of split flues, including accessories and outlet terminals.
2. Consult the table 4 and identify the losses in m (equivalent metres) of every element, according to the installation
eq
position.
3. Check that the sum total of losses is less than or equal to the maximum permissible length in table 3.
Table. 3 - Max. length separate ducts
Separate ducts
Max. permissible length 75 m
eq
20
Cod. 3540U320 - 09/2009 (Rev. 00)