Water Systems Engine Installation Connections
Various connections will be required when fitting the system, these are largely standard, however pipe lengths will need to be measured depending on the routes chosen.
The inlet & outlet engine pipes from the calorifier carry the now hot, engine cooling water that heats the fresh water up through the heat exchange process within the calorifier. These pipes will need to be connected to the engine (see manufacturers instructions). They are normally arranged in such a way that the hottest water is harnessed from the outlet of the thermostat and then fed back in on the cold side of the internal water pump, (if the engine has one (indirect system)), or towards the exhaust outlet if it is a direct cooled system.
Some direct cooled engines do not have thermostats. This maybe worth adding to increase the temperature of the water available to the calorifier in order to heat your fresh water more successfully, but this should only be done if there is a bypass relief valve (which can be added to most engines).
WaterMota Hot Water Engine Relief Valve Kit Pre-Crossflow W3201 Crossflow W3200
Accumulator & Expansion Tanks
Accumulator tanks can be installed into pressurised water systems to smooth the flow of water from your taps and help reduce wear on your water pump. The tank should sit just after the water pump and holds a reservoir of water, that acts like a ‘buffer’, to ease the strain on the water pump - effectively helping prime the system ready for use.
Accumulator Accumulator Brass Non- Pressure Relief Tank Bracket Fitting Kits Valves 1/2” BSP Return 1/2” BSP 2 litres 60 psi Stainless steel 1/2” BSP 1.8 bar Valve with wormWA046 WA047A 1/2” BSP WA048A Accumulator Expansion Tanks
3/4” BSP 5 litres 150 psi WA046A 3/4” BSP 8 litres 60 psi
WA046B
drive fastener 44-217mm(Ø)
WA047
3/4” BSP
WA047B
47mm(L) x 35(Ø)
WA318
2.5 bar
WA048C 3 bar
WA048D
Accumulator tanks can also be installed as hot water expansion tanks. When fitted after a non-return valve and before the calorifier on the fresh water calorifier inlet, the accumulator (known as an expansion tank in this situation) stores the extra hot water that is created when the water expands as it heats up in the calorifier. In effect, you are storing additional hot water rather than it leaking back into the cold supply.
Shower & Wash Basin
With the introduction of hot water to your Freeman it is quite easy to transform the toilet compartment with a wash basin and even a shower. Whale Elegance Shower Mixer Tap 1/2” hose
WA053B Replacement Whale Elegance Shower Hoses 1.5m 1/2” hosetail
WA117
108
Corner Sink
295mm(L) x 286(W) x 330(D)
WA020
Shower and sink basin conversion in a Freeman 23 using WA020 Corner Sink White and WA053B Elegance Shower Mixer Tap
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