—

elmax is the electric power consumption when the product is providing the nominal heat output, excluding the energy needed for the transport fan, expressed in kW;

—

elmin is the: electric power consumption when the product is providing the minimum heat output, excluding the energy needed for the transport fan, expressed in kW;

—

elsb is the electric power consumption when the product is in standby mode, expressed in kW;

—

SCOP is the seasonal coefficient of performance, expressed in %;

—

F(i) are the corrections calculated according to point 3.3, expressed in %.

(1)

For fixed capacity units:

In case the lowest declared heating capacity exceeds the part load for heating (or capacity ratio CRu <1,0):

where:

and,

(2)

For staged or variable capacity units:

Determine the declared heating capacity and COPd(Tj) at the closest step or increment of the capacity control of the unit to reach the required heat load.

If this step does allow to reach the required heating load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required heating load of 9 kW), then COPbin(Tj) is assumed to be equal to COPd(Tj).

If this step does not allow to reach the required heating load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required heating load of 9 kW), determine the capacity and COPbin(Tj) at the defined part load temperatures for the steps on either side of the required heating load. The part load capacity and the COPbin(Tj) at the required heating load are then determined by linear interpolation between the results obtained from these two steps.

If the smallest control step of the unit only allows a declared heating capacity higher than the required heating load, the COPbin(Tj) at the required part load ratio is calculated using the approach laid out for fixed capacity units.

(3)

For bins representing other than above described operating conditions:

The COPbin shall be established by interpolation, except for part load conditions above part load condition A, for which the same values as for condition A shall be used and for part load conditions below part load condition D, for which the same values as for condition D shall be used.

—

SPERh is the seasonal primary energy ratio for heating, expressed in %;

—

F(i) are the corrections calculated according to point 3.3, expressed in %.

—

QEh = effective heating capacity, in kW;

—

QEhr,c = effective heat recovery capacity, in kW;

—

Qgmh = is the measured heating heat input, in kW;

—

GUEh shall also take into account degradation effects due to cycling in a manner similar to that of electric heat pumps.

—

QEh = effective heating capacity, in kW;

—

QEhr,c = effective heat recovery capacity, in kW;

—

PEh = effective heating electrical power input, in kW;

—

AEFh shall also take into account degradation effects due to cycling in a manner similar to that of electric heat pumps.

(1)

For fixed capacity units:

In case the lowest declared heating capacity exceeds the part load for heating (or capacity ratio CRu <1,0):

and,

where:

and,

(2)

For staged or variable capacity units:

Determine the declared heating capacity at the closest step or increment of the capacity control of the unit to reach the required heat load.

If this step allows the heating capacity to reach the required heating load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required heating load of 9 kW), then GUEbin(Tj) is assumed to be equal to GUEd(Tj) and AEFbin(Tj) is assumed to be equal to AEFd(Tj).

If this step does not allow the heating capacity to reach the required heating load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required heating load of 9 kW), determine the capacity and GUEbin(Tj) and AEFbin(Tj) at the defined part load temperatures for the steps on either side of the required heating load. The heating capacity in part load, the GUEbin(Tj) and the AEFbin(Tj) at the required heating load are then determined by linear interpolation between the results obtained from these two steps.

If the smallest control step of the unit only allows a declared heating capacity higher than the required heating load, the GUEbin(Tj) and AEFbin(Tj) at the required part load ratio is calculated using the approach laid out for fixed capacity units.

For bins representing other than above described operating conditions the GUEbin and AEFbin shall be established by interpolation, except for part load conditions above part load condition A, for which the same values as for condition A shall be used and for part load conditions below part load condition D, for which the same values as for condition D shall be used.

—

SEER is the seasonal space cooling energy efficiency in active mode, expressed in %;

—

F(i) are the corrections calculated according to point 3.3 expressed in %.

(1)

For electric air conditioners (connected to an air-based cooling system) of which the capacity control is fixed capacity:

In case the lowest declared cooling capacity exceeds the part load for cooling (or capacity ratio CRu <1,0):

where:

(2)

For electric comfort chillers and high temperature process chillers (connected to a water-based cooling system) of which the capacity control is fixed capacity

In case the lowest declared cooling capacity exceeds the part load for cooling (or capacity ratio CRu <1,0):

where:

(3)

For staged or variable capacity air conditioners and comfort chillers:

Determine the declared cooling capacity and EERd(Tj) at the closest step or increment of the capacity control of the unit to reach the required cooling load.

If this step does allow to reach the required cooling load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required cooling load of 9 kW), then EERbin(Tj) is assumed to be equal to EERd(Tj).

If this step does not allow to reach the required cooling load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required cooling load of 9 kW), determine the capacity and EERbin(Tj) at the defined part load temperatures for the steps on either side of the required cooling load. The part load capacity and the EERbin(Tj) at the required cooling load are then determined by linear interpolation between the results obtained from these two steps.

If the smallest control step of the unit only allows a declared cooling capacity higher than the required cooling load, the EERbin(Tj) at the required part load ratio is calculated using the approach laid out for fixed capacity units.

(4)

For high temperature process chillers:

The required cooling load shall be reached within a ± 3 % margin.

For bins representing other than above described operating conditions the EERbin shall be established by interpolation, except for part load conditions above part load condition A, for which the same values as for condition A shall be used and for part load conditions below part load condition D, for which the same values as for condition D shall be used.

—

SPERc is the seasonal primary energy ratio for cooling, expressed in %;

—

F(i) are the corrections calculated according to point 3.3 expressed in %.

(1)

For air conditioners with internal combustion (connected to an air-based cooling system) of which the capacity control is fixed capacity:

In case the lowest declared cooling capacity exceeds the part load for cooling (or capacity ratio CRu <1,0):

and,

where:

and,

(2)

For comfort chillers with internal combustion (connected to a water-based cooling system) of which the capacity control is fixed capacity:

In case the lowest declared cooling capacity exceeds the part load for cooling (or capacity ratio CRu <1,0):

where:

and,

(3)

For staged or variable capacity units:

Determine the declared cooling capacity at the closest step or increment of the capacity control of the unit to reach the required heat load.

If this step allows the cooling capacity to reach the required cooling load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required cooling load of 9 kW), then GUEbin(Tj) is assumed to be equal to GUEd(Tj) and AEFbin(Tj) is assumed to be equal to AEFd(Tj).

If this step does not allow the cooling capacity to reach the required cooling load within ± 10 % (e.g. between 9,9 kW and 8,1 kW for a required cooling load of 9 kW), determine the capacity and GUEbin(Tj) and AEFbin(Tj) at the defined part load temperatures for the steps on either side of the required cooling load. The cooling capacity in part load, the GUEbin(Tj) and the AEFbin(Tj) at the required cooling load are then determined by linear interpolation between the results obtained from these two steps.

If the smallest control step of the unit only allows a declared cooling capacity higher than the required cooling load, the GUEbin(Tj) and AEFbin(Tj) at the required part load ratio is calculated using the approach laid out for fixed capacity units.

For bins representing other than above described operating conditions the GUEbin and AEFbin shall be established by interpolation, except for part load conditions above part load condition A, for which the same values as for condition A shall be used and for part load conditions below part load condition D, for which the same values as for condition D shall be used.

and,

where:

and,

where:

(1)

For fixed capacity units:

In order to obtain a time averaged outlet temperature the inlet and outlet temperatures for the capacity test shall be determined using the equation below:

toutlet,average = t inlet,capacity test + (toutlet,capacity test — tinlet,capacity test) * CR

where:

For determining toutlet,average an iterative procedure is required at all conditions (B, C, D) where the chiller refrigeration capacity (control step) is higher than the required refrigeration load.

Then, for each part load conditions B, C, D the EERPL is calculated as follows:

where:

For chillers, the degradation due to the pressure equalization effect when the unit restarts can be considered as negligible.

The only effect that will impact the EER at cycling is the remaining power input when the compressor is switched off.

The electrical power input during the compressor off state of the unit is measured when the compressor is switched off for at least 10 min.

The degradation coefficient Cc is determined for each part load ratio as follows:

If Cc is not determined by test then the default degradation coefficient Cc is 0,9.

(2)

For variable capacity units:

Determine the declared capacity and EERPL at the closest step or increment of the capacity control of the unit to reach the required refrigeration load. If this step does not allow reaching the required refrigeration load within +/- 10 % (e.g. between 9,9 kW and 8,1 kW for a required refrigeration load of 9 kW), determine the capacity and EERPL at the defined part load temperatures for the steps on either side of the required refrigeration load. The part load capacity and the EERPL at the required refrigeration load are then determined by linear interpolation between the results obtained from these two steps.

If the smallest control step of the unit is higher than the required refrigeration load, the EERPL at the required part load ratio is calculated using the equation for fixed capacity units.