Calorifier System - Beta Marine Beta 10 Operator's Maintenance Manual

KEEL COOLED
1. The supply pipe to the keel
cooler should be 22mm bore
and the return 22mm bore.
2. The tank size should have a
surface area (x) exposed to the
sea water or canal water of (0.25
x the bhp of the engine) = sq ft
of cooling area required. For
canal boats this should be
adequately baffled and a vent
provided to expel any air. The
supply (hot water) goes in at the
top of the tank and the return
comes out of the bottom. Also
refer to cooling tank notes on
page 10.

CALORIFIER SYSTEM

All Beta engines can be fitted with
the engine tappings to allow the hot
water from the closed fresh
water/antifreeze system to circulate
through a calorifier tank which in
turn heats up domestic water.
Calorifier tappings on this range of
engine are shown below.
a
b
Also check to see if the pipe
going to the calorifier is getting
warm after 15 minutes.Top up
the water level as required and
run for another 10 minutes then
repeat.
4. If the water level is steady but no
warm water is getting to the
IDEAL KEEL COOLING TANK
Baffle continuously welded to
outer skin and close fitting on
inner skin.
(2) The tank should be thin in
section to allow good mixing of
1. The big problem with a calorifier
is to remove all the air from the
system. If this is not achieved
then they don't work!
2. Try and keep the supply and
return pipes a and b either
horizontal or sloping down in a
continuous fall. This avoids air
pockets being created.
Heat Exchanger Version
calorifier then very carefully open
the calorifier bleed valve (see
manufacturers instructions) or if
none is provided then very
carefully loosen the jubilee clip
securing the supply pipe to the
calorifier . Air should escape.
Refasten securely when no
further bubbles are seen.
(1)
Air bleed valves
31
the water over the cool outer surface.
(3) Air bleed valves should be fitted
both ends.
3. Extra care must be taken when
first filling the calorifier circuit
system with 50% antifreeze to
water solution as the engine may
appear to be full but it soon
disappears into the calorifier pipe
work. Run the engine off load for
10 minutes then check the level
as described in 'Filling The Fresh
Water System'.
Keel Cooled Version
a
b
CAUTION
Do not do this when the engine is
hot as scalding hot water may be
forced out of the pipe under pressure.