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20
UK
IRL
Appendix B: Flue restrictor
Determine the right flue restrictor:
•
Calculate the total horizontal- and vertical length of the flue, according to the
calculations in Appendix A
•
Determine according to the table the right flue restrictor size
•
When meeting an X, and when the values are outside the table, the combination is
not allowed
•
Normally the 30 mm flue restrictor is pre-installed
Horizontal length (m)
Duet
0
1
2
3
4
5
6
0
x
x
x
x
x
x
x
0.5
x
x
x
x
x
x
x
1
0
0
0
x
x
x
x
1.5
0
0
0
0
0
x
x
2
30
0
0
0
0
0
0
3
30
30
0
0
0
0
0
4
40
30
30
0
0
0
0
5
40
40
30
30
0
0
0
6
50
40
40
30
30
0
0
7
50
50
40
40
30
30
x
8
50
50
50
40
40
x
x
9
65
50
50
50
x
x
x
10
65
65
50
x
x
x
x
11
65
65
x
x
x
x
x
Real vertical Height (m)
12
65
x
x
x
x
x
x
Summary of Contents for Duet
Page 1: ...DUET Installation Guide IRL UK 40010731 0842 ...
Page 2: ...1 UK IRL General 1 1 1 2 1 3 1 4 1 5 30cm A ...
Page 3: ... 2 UK IRL Duet 2 1 2 2 2 3 2 4 2 5 ...
Page 4: ...3 UK IRL 3 1 3 2 3 3 3 4 3 5 ...
Page 5: ... 4 UK IRL 3 6 3 7 3 8 3 9 4 0 4 1 ...
Page 6: ...5 UK IRL 4 2 4 3 5 1 A ...
Page 24: ...23 UK IRL Appendix E Dimensions Duet R ...
Page 25: ... 24 UK IRL Appendix F Dimension Duet L ...
Page 26: ...25 UK IRL Appendix G Dimensions Duet R with floorplate ...
Page 27: ... 26 UK IRL Appendix H Dimensions Duet L with floorplate ...
Page 28: ...27 UK IRL Appendix J Dimensions Convection grid ...
Page 29: ... 28 UK IRL Appendix K Dimensions Service hatch ...
Page 30: ...29 UK IRL ...
Page 31: ... 30 UK IRL ...