How does it work?
Aeromax Plus Air Source Heat Pumps provide thermodynamic heating by means of a vapour compression cycle. In the same
way that a fridge uses refrigerant to extract heat from the inside to keep the food cool, air source heat pump extracts heat
from the outside air, and uses it to heat the home through radiators, underfloor system or provide domestic hot water. It can
extract heat from the air even when the outside temperature is as low as -20°C.
Every air source heat pump has four
main parts:
1. evaporator
2. compressor
3. condenser (heat exchanger)
4. expansion device
Although Aeromax Plus is powered by electricity, when it is installed and designed correctly can often result in the system
costing less to run than systems heated by oil, LPG, electricity or coal. Your heating costs will depend on how you use your
heating or hot water and the temperature of your radiators. Aeromax Plus is cost-effective to use all year round, but you can
ensure it is at its most efficient by running your radiators or underfloor heating at lower temperatures.
How do I use it?
The Aeromax Plus heat pump is designed to operate with a standard heating time switch and programmable room
thermostat, providing space heating or DHW according to demand. The unit has two modes of operation: one for space
heating through underfloor heating or radiators adjustable between 35°C and 55°C and a second for DHW preset at 60°C.
We recommend that you review the electricity tariffs from all suppliers in your area and select one that will give you the
optimum economy in relation to your lifestyle and heating demand. Timings appropriate to your heating and hot water
demand and to the selected tariff should be programmed into the controller.
3
2
1
4
Heat
Pump
Internal Heating
Outside Air
(1) The evaporator collects heat from
the outside air, which is then drawn
into the unit by the fan through the
evaporator fins and expelled through
the front grille. The evaporator has
liquid refrigerant passing through
it, which is at a considerably lower
temperature than the outside air,
therefore the air gives up its heat to
the refrigerant, which then vaporises.
(2) This preheated vapour now
travels to the compressor where it
is compressed and upgraded to a
much higher temperature.
(3) The hot vapour now enters the
condenser where it is surrounded
by water from the heating system.
The heat is given up to the cooler
water and the now cooler refrigerant
returns to its former liquid state but
still under high pressure from the
compressor.
(4) This high pressure is then released
by passing the liquid through the
expansion device and from there it
returns to the evaporator and the
cycle starts again.
