EDM SYSHP MINI SPLIT 06 16

5
1.2 System Conguraons
It can be congured to run with the electric heater either enabled or disabled and can also be used in conjuncon with an
auxiliary heat source such as a boiler.
The chosen conguraon aects the size of heat pump that is required. Three typical conguraons are described below.
Refer to Figure 1-1.2.
Conguraon 1: Heat pump only
▪ The heat pump covers the required capacity and no extra heang capacity is necessary.
▪ Requires selecon of larger capacity heat pump and implies higher inial investment.
▪ Ideal for new construcon in projects where energy eciency is paramount.
Conguraon 2: Heat pump and backup electric heater
▪
Heat pump covers the required capacity unl the ambient temperature drops below the point at which the heat pump
is able to provide sucient capacity. When the ambient temperature is below this equilibrium point (as shown in Figure
1-1.2, the backup electric heater supplies the required addional heang capacity.
▪ Best balance between inial investment and running costs, results in lowest lifecycle cost.
▪ Ideal for new construcon.
Conguraon 3: Heat pump conjuncon with auxiliary heat source
▪ Heat pump covers the required capacity unl the ambient temperature drops below the point at which the heat pump is
able to provide sucient capacity. When the ambient temperature is below this equilibrium point (as shown in Figure 1-1.2,
depending on the system sengs, either the auxiliary heat source supplies the required addional heang capacity or the
heat pump does not run and the auxiliary heat source covers the required capacity.
▪ Enables selecon of lower capacity heat pump.
▪ Ideal for refurbishments and upgrades.
Figure 1-1.2: System conguraons
Conguraon 1
Conguraon 2
Conguraon 3
Heat pump capacity
Required capacity
Ambient temperature
Highest temperature
(No more heang)
Lowest ternperature
(Design temperature)
Equilibrium points
Minimum required capacity (OkW)
Maximum required capacity