RDG603A8 - Issue 1 - Shire 14 Canal Boat Complete Manual 30, 35, 38, 40, 45, 50.doc
Page 10 of 50
SECTION
3 - Installation
1.
Ventilation
All internal combustion engines radiate heat and require cool, clean air to aid complete
combustion.
Please ensure that adequate engine room ventilation is provided, by fitting at least two
vents of an aperture of not less than 10,000 mm
2
each, (16 in
2
).
An allowance must be made for any grills, louvres or bends placed in the airflows
and generally an increase of 25% in area is sufficient to overcome any restriction
problems.
2.
Engine Beds
These should be a minimum of 10mm thick, extended rearward and be welded to the
hull and forward to the bulkhead. Webs or gussets must be welded in place midway to
prevent flexing.
3.
Cooling System
Ensure pipe work to and from the skin tanks is of sufficient bore. Ensure tight bends
and elbows are avoided or kept to a minimum (sizes are listed overleaf).
4.
Skin Tanks
The ideal skin tank internal thickness is between 50 and 75mm, the table below will
indicate a suitable tank size. However, volume will not compensate for lack of surface
area. It should be recognised that fitting a large calorifier will increase the theoretical
cooling capacity only until it is up to temperature. It is unlikely that a boat on the inland
waterways will operate at full power for long periods of time. The engine cooling water
outlets are on the right hand (starboard) side of the engine.
