Nibe F1255 Installation Manual page 17

Valve outlet size Minimum size of dis-
charge pipe
G1/2 15 mm
G1/2 15 mm
G1/2 15 mm
<G3>/4 22 mm
<G3>/4 22 mm
<G3>/4 22 mm
G1 28 mm
G1 28 mm
G1 28 mm
NIBE F1255
Minimum size of dis- Maximum resistance
charge pipe from tun- allowed, expressed as
dish a lenght of straight
pipe (i.e. no elbows or
bends)
22 mm up to 9 m
28 mm up to 18 m
35 mm up to 27 m
28 mm up to 9 m
35 mm up to 18 m
42 mm up to 27 m
35 mm up to 9 m
42 mm up to 18 m
54 mm up to 27 m
Resistance created by
each elbow or bend
0.8 mm
1.0 mm
1.4 mm
1.0 mm
1.4 mm
1.7 mm
1.4 mm
1.7 mm
2.3 mm
Chapter 4 | Pipe connections 17