Calculate The Total Piping Length; Appliance Categories And Pipe Lengths - Daikin EHYKOMB33AA Installation And Operation Manual

7 Installation
INFORMATION
Carefully follow the instructions as described in the adapter
set.
7.7.3

Calculate the total piping length

When the resistance of the flue pipe and air supply pipe increase,
the appliance power will decrease. The maximum permitted
reduction in power is 5%.
The resistance of the air supply pipe and combustion gas flue
depends on:
▪ the length,
▪ the diameter,
▪ all components (bends, elbows,...).
The total permitted pipe length of the air supply and the combustion
gas flue is indicated for each appliance category.
Equivalent length for concentric installation (60/100)
Bend 90°
Bend 45°
Equivalent length for dual pipe installation
R/D=1 Bend 90°
Bend 45°
R/D=0.5 Elbow 90°
Elbow 45°
Installation and operation manual
18
Length (m)
1.5
1
Length (m)
2 m
1 m
4 m
2 m
R/D=1
D
For a dual pipe connection, all defined lengths assume a diameter of
80 mm.
Sample calculation for dual pipe application
Pipe Pipe length
Flue pipe L1+L2+L3+(2×2) m
Air supply L4+L5+L6+(2×2) m
Total piping length = sum of the straight pipe lengths + sum of the
equivalent pipe length of bends/elbows.
7.7.4

Appliance categories and pipe lengths

Following installation methods are supported by the manufacturer.
Single boiler installation
Please note that NOT all flue gas configurations as described below
are allowed in all countries. Please follow the local and national
regulations.
Daikin Altherma hybrid heat pump – gas boiler module
R/D=0.5
D
Total pipe length
13 m
12 m
EHYKOMB33A
4P353067-1K – 2020.10