Cooling system
63
Hot water connections
Connections for hot water outlets may be fitted to the
thermostat housing (outlet) and circulation pump (in-
let). The nipples from Volvo Penta are intended for a
hose with an inner diameter of 16 mm (5/8").
Install the extra hot water circuit so that its highest
point is at least 50 mm (2") lower than the coolant
level in the expansion tank. If this cannot be obtained
a separate expansion tank must be installed.
Shut off valves
Volvo Penta recommends that shut-off valves should
be installed in the extra circuit on both the supply and
return sides. Locate the valves as close to the engine
as possible.
Thermostat
In order to reach correct engine temperature more
quickly an additional thermostat (1) may be installed
in the external circuit.
1
1/2" NPTF
1/2" NPTF
Min. 50mm
(2")