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Danfoss DWH Opti Installation Et Maintenance page 9

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Discharge pipe arrangement
B
The tundish must be positioned away from any electrical devices.
D
The tundish must be installed so that it is visible to the occupants.
1
2
500mm max
300mm min
Figure 6.
The principal installation solution of the discharge pipe assembly.
Position
Name
1
Safety device (for example, temperature relief valve)
2
Metal discharge pipe from safety device to tundish
3
Tundish
4
Metal discharge pipe from tundish, with continuous fall
5
Discharge below fixed grating
6
Trapped gully
Sizing of copper discharge pipe (4) for common temperature relief valve outlet sizes
Minimum
Valve
size of
outlet
discharge
size
pipe (2)
G1/2
15mm
G3/4
22mm
G1
28mm
All manuals and user guides at all-guides.com
3
4
Maximum resistance allo-
Minimum size of
wed, expressed as a length
discharge pipe
of straight pipe (that is, no
(4 from tundish)
elbows or bends)
22mm
Up to 9m
28mm
Up to 18m
35mm
Up to 27m
28mm
Up to 9m
35mm
Up to 18m
42mm
Up to 27m
35mm
Up to 9m
42mm
Up to 18m
54mm
Up to 27m
VMBNB72J
5
6
Resistance created
by each elbow or
bend
0.8m
1.0m
1.4m
1.0m
1.4m
1.7m
1.4m
1.7m
2.3m
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