Daikin CHYHBH05AA Installer's Reference Manual page 41

The horizontal flue MUST be installed under a 3° fall towards the
boiler (50 mm per metre) and MUST be supported with a minimum
of 1 bracket at each meter length. Best recommended position of the
bracket is just before the joint.
INFORMATION
Flexible flue gas lines may NOT be used in horizontal
connection sections.
C (1) C (2)
13 33
60/100 60/100
L1 (m) L1 (m)
10 10
C (1) C (2) C
13 33
80/125 80/125 80/125
L1 (m) L1 (m) L1 (m)
29 29 10
Special remark regarding C : The maximum lengths for L1 and L2
53
are related to each other. First determine the length of L1; then
make use of the graph below to determine the maximum length of
L2. For example: if the length of L1 is 2 m, L2 can maximally be 8 m
long.
L2
11
10
9
8
7
L2=–1.8×L1+11.8
6
5
4
3
2
1
0
0 1 2 3 4 5
Multi-boiler installation
INFORMATION
All piping lengths in the tables below are maximum
equivalent piping lengths.
CHYHBH05+08AA + EHYKOMB33A
Daikin hybrid for multi heat pump – heat pump module
4P471761-1A – 2017.10
C (1) C (2)
13 33
Twin-80 Twin-80
L1 (m) L1 (m)
80 21
(4) C (3)
93 53
80 60/100 60
L2 (m) L1 (m) L2 (m)
25 6 1
1 10
L1
6 7
L1
L2
L1
C
43
C
C
5
83
6
L2 L1
L1
C
43
C
C
83
5
6
The horizontal flue MUST be installed under a 3° fall towards the
boiler (50 mm per metre) and MUST be supported with a minimum
of 1 bracket at each meter length. Best recommended position of the
bracket is just before the joint.
INFORMATION
Flexible flue gas lines may NOT be used in horizontal
connection sections.
INFORMATION
The maximum lengths in the table below apply to each gas
boiler separately.
C (6)
83
Twin-80 60/100
L1+L2 (m) L1 (m)
80 10
Special remark regarding C
83
minimum diameters of the combined gas exhaust system.
Number of units
2
3
4
5
6
7
8
9
10
11
12
Special remark regarding C
43
minimum diameters of the combined gas exhaust/air intake system.
Number of Concentric
units
Gas Air intake
exhaust
2 161
3 172
4 183
5 195
7 Installation
L1
43
5
L1
L2
43
5
C (5)
43
80/125 Twin-80
L1 (m) L1+L2 (m)
29 80
: Refer to the table below for the
Minimum Ø
130
150
180
200
220
230
250
270
280
290
300
: Refer to the table below for the
Dual pipe
Gas Air intake
exhaust
302 161 255
322 172 272
343 183 290
366 195 309
Installer reference guide
41