Installation instructions
Caution
Installation for duct sharing
Forced exhaust type : FE
Duct sharing in a Communal Space
1) If the distance between the boiler and the duct shared by multiple boilers is more than 4 m, connect the
gas flue ducts to the shared duct. If the distance is less than 4 m, the gas flue duct must be exhausted separately.
2) The effective cross sectional area of the shared duct must be at least the area calculated by the following formula.
A = Q x 0.6 x K x F + P
The above A, Q, K, F, and P refer to the following:
A: Efficient cross sectional area of the shared flue duct(mm²), Q: Total heat input(kcal/h),
K: K-factor (Figure 1), F: proportion of simultaneous use of boilers (Figure 1),
P: Horizontal projected area of the gas flue duct(mm²)
[Figure 1] K-factor
[Figure 2] Proportion of simultaneous use of boilers
When the cross sectional
area is circular
When the cross sectional
area is square
When the cross sectional
area is rectangular
Number
of boilers
Number
of boilers
Simultaneous
use ratio(F)
Simultaneous
use ratio(F)
3) The shared duct must be installed vertically without a turn, and have a circular or rectangular cross section
at below 1:1.4 ratio (width and height).
4) The number of the boilers connected to the shared duct on the same floor must be no more than 2.
5) The exhaust duct of a briquette stove or an oil-fired boiler must not be connected to the shared duct.
6) A conventional flue type boiler and a forced exhaust type boiler can not be connected to the same shared duct.
7) Install the FE type’s terminal of gas flue duct which has a closed end with side ventilation holes.
30
To Next Page
Loading...