Download - Buderus

6
Installation
Do not exceed the total equivalent venting length of 100 feet
(30,480 mm) (GB142-24/30/45) and 60 feet (18,288 mm)
(GB142-60) maximum requirement each for the intake and
exhaust piping.
See table 4 for the Friction Loss Equivalent in piping and
fittings.
Example:
When you end up using 3 x 45°-elbows and the concentric
vent kit, then the total venting length may not exceed 88 feet
(26.84 m) (GB142-24/30/45) or 48 feet (14.65 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)
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
Total friction loss equivalent = 12 ft (3.64 m)
Total venting length for this example is:
GB142-24/30/45 = 100 ft (30.48 m) - 12 ft (3.64 m) =
88 feet (26.84 m)
GB142-60 = 60 ft (18.29 m) - 12 ft (3.64 m) =
48 feet (14.65 m).
NOTICE
The minimum covering wall thickness is
1" (25 mm).
The maximum covering wall thickness is
16" (406 mm).
CAUTION !
Vent connectors serving appliances vented by
natural draft shall not be connected into any
portion of mechanical draft systems operating
under positive pressure.
NOTICE
For Direct venting properly reassemble and
reseal the vent and air-intake systems.
6.8 Conversion to Propane
To convert the boiler to propane , following the instructions
in the " Propane, Conversion Kit" Instruction manual.
Available kits see page 59 "spare parts, pos. 43".
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Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!