WhisperGen PPS16 Installation and Commissioning Rev: 080801
23
11. Setting up the exhaust system
Warning:
The exhaust outlet shall not be connected to the exhaust system of another engine or heating
device.
Warning:
The WhisperGen exhaust shall be freely vented to the outside at all times.
Warning:
Condensate forms down the entire length of the exhaust pipe under all operating conditions.
Condensate drains shall be run from all points in the exhaust where condensate is likely to be
trapped. The condensate shall be drained into the waste water tank, or a suitable collection
point for combustion condensate.
Condensate drains shall contain an air trap
to prevent
exhaust gases leaking into the boat, or living spaces. The minimum air trap tube size is 10mm
for vented drains/tanks and 15mm for non-vented tanks.
Warning:
For marine installations the exhaust outlet shall not be submerged at any time. See
Figure 10
:
Exhaust piping for marine use.
Warning:
The exhaust pipe shall always have a slope of at least 10° relative to the horizon. Momentary
changes of slope, to less than 10°relative to the horizon (caused by a boat going over a wave or
swell), are acceptable. See
Figure 10
: Exhaust piping for marine use.
Warning:
The exhaust back-pressure, measured at the WhisperGen exhaust port shall not exceed 7mm
H
₂
0 with Exhaust Temp greater than 400°C when the Air % is at approximately 100%. This is
about 20mm H
₂
0 with the Exhaust Temp less than 30°C. Higher back pressures will
significantly reduce the power output of the WhisperGen.
Warning:
The condensate drain shall be free from obstructions at all times.
The service connection on the back of the WhisperGen has an ISO Rp 1¼ female pipe thread.
The condensate drain uses 13mm inside diameter tubing. The drain, or pipe, shall not be
higher than the service connection on the WhisperGen.
The exhaust pipe shall be:
●
short with few bends; and
●
fitted with a weather protection cowling at the exhaust outlet.
Extra exhaust pipe slope may need to be installed to compensate for boat heel. This is
especially important for a yacht which has an exhaust pipe running from port to starboard.
