Installation6
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!28
Do not exceed the total equivalent venting length of 100 feet
(30,480 mm) maximum requirement each for the intake and
exhaust piping.
See table 5 for the Friction Loss Equivalent in piping and
fittings.
Example:
When you end up using 3 x 45°-elbows and the concentric
roof terminal, then the total venting length may not exceed
68 feet (20.72 m).
3 x 45°-elbow = 3 x 4 ft (1.22 m) = 12 ft (3.66 m)
concentric roof terminal 4"/6" = 20 ft (6.10 m)
Total friction loss equivalent = 32 ft (9.76 m)
Total venting length for this example is:
GB162-80 kW/100 kW = 100 ft (30.48 m) - 32 ft (9.76 m) =
68 ft (20.72 m) each for the intake and exhaust piping.
Fig. 27 Horizontal venting system (sealed combustion) -
Situation 2 (PVC only)
INTAKE (BEHIND)
EXHAUST
4" (102 mm)
WALL TERMINATION
Fig. 28 Vertical venting system (sealed combustion)
12” (300 mm) over maximum
snow level or 24” (600 mm)
whichever is greater
Exhaust
Intake
10”-0“ MIN
(250 mm - 0 mm MIN)
Fittings or Piping Equivalent
feet m
45 degree elbow
41.22
90 degree elbow
7 2.13
plastic pipe per foot
10.30
parallel vent kit
2 0.61
concentric roof terminal
4"/6" (100/150 mm)
20 6.10
Table 5 Friction Loss Equivalent in piping and fittings
NOTICE
Appliance input rates are based on minimum
vent length operation. Longer vent lengths
(up to maximum) will reduce the input propor-
tionally.
To Next Page
Loading...
