13
Multi Fuels
Operation
• The temperature of the hot water is controlled with the cylinder sensor and the supplied controller.
• The controller has a built in time clock control and has both daily and weekly sterilisation functions for legionella.
• The system is able to be setup as open vented or pressurised.
• The coil within the cylinder must be designed for use with a heat pump with a surface area of at least 2.5 m².
• A guideline for sizing the cylinder would allow 55 litres of water per person each day.
• It is recommended that the heat pump is sized so that it is able to reheat the cylinder within an hour.
• As with most cylinders, it is possible to connect a PV system to the immersion heaters to reduce costs. A battery storage system is also a great
way to help with this.
• The heating system is controlled via a thermostat / time clock that is wired back to the internal control board (MIM).
• There is not a limitation to the number of heating zones that can be connected to this setup.
• This setup shows one heating zone.
• Each heating zone will be controlled by its own thermostat or timer, this will operate it’s own zone valve which will then control the pump. This
in turn will create the run signal for the heat pump to operate in heating mode.
• Whilst the heat pump is running, it will be constantly adjusting the water temperature to suit the ambient temperatures and conditions. This is
the weather compensation of the unit.
H
Pump HP
Pump Z1
HW
Z2
Z1
Buffer Tank
with coil
Stat set to
55°C
Other sources
into coil
