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We reserve the right to make any changes due to technical modifications!
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Buderus Hydronic Systems • http://www.buderus.net
Installation6
See table 4 for the Friction Loss Equivalent in piping and
fittings.
Example:
When you end up using 3 x 45°-elbows and the concen-
tric vent kit, then the total venting length may not exceed
88 feet (26.82 m) (GB142-24/30/45) or 48 feet (14.63 m)
(GB142-60).
3 x 45°-elbow = 3 x 3 ft (0.91 m)= 9 ft (2.73 m)
concentric vent kit = 3 ft (0.91 m)
Total friction loss equivalent = 12 ft (3.66 m)
Total venting length for this example is:
GB142-24/30/45 = 100 ft (30.48 m) - 12 ft (3.66 m)=
88 feet (26.82 m)
GB142-60 = 60 ft (18.29) - 12 ft (3.66 m) =
48 feet (14.63 m).
Fittings or Piping Equivalent
feet m
45 degree elbow 3 0.91
90 degree elbow 5 1.52
plastic pipe per foot 1 0.30
concentric vent kit 3 0.91
Table 4 Friction Loss Equivalent in piping and fittings
NOTICE
The minimum covering wall thickness is 1". The
maximum covering wall thickness is 16".
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