Appliance Categories And Pipe Lengths - Daikin CHYHBH05AA Installer's Reference Manual

7 Installation
Equivalent length for dual pipe installation
R/D=1 Bend 90°
Bend 45°
R/D=0.5 Elbow 90°
Elbow 45°
R/D=1
D
For a dual pipe connection, all defined lengths assume a diameter of
80 mm. In case of smaller or larger pipe diameters, the permissible
pipe length is respectively smaller or larger. In case of smaller
diameter, the following applies:
▪ Ø70: 0.59 × the permissible pipe length for Ø80
▪ Ø60: 0.32 × the permissible pipe length for Ø80
▪ Ø50: 0.15 × the permissible pipe length for Ø80
Contact the manufacturer to check the calculations for the resistance
of the air supply and combustion gas flue pipe and the wall
temperature at the end of the combustion gas flue pipe.
Installer reference guide
40
Length (m)
2 m
1 m
4 m
2 m
R/D=0.5
D
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.
7.12.4

Appliance categories and pipe lengths

Following installation methods are supported by the manufacturer.
Single boiler installation
INFORMATION
All piping lengths in the tables below are maximum
equivalent piping lengths.
L1
C
53
3
L1
L1
C
C
13
93
1
4
Daikin hybrid for multi heat pump – heat pump module
Total pipe length
13 m
12 m
C
33
2
CHYHBH05+08AA + EHYKOMB33A
4P471761-1A – 2017.10