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Appendix
Appendix
Methodology for calculating electricity/gas consumption index for indoor unit No. i
TEi is the electricity consumption index for indoor unit No. i. TGi is the gas consumption index for indoor unit No. i. TOi is the fuel consumption
index for indoor unit No. i.
z When the object of electricity distribution calculations is “thermostat ON time” and “thermostat OFF time” (regular time
distribution)
The electricity consumption index is calculated with “cumulative operating time” and “thermostat ON cumulative time”.
The gas consumption index and fuel consumption index are calculated with “thermostat ON cumulative time”.
y GHP
Electricity TEi = (RHHi×αHH+RHi×αH+RLi×αL)×Pi
Gas TGi = (SHHi×αHH+SHi×αH+SLi×αL)×Pi
y PAC
Electricity TEi = {(RHHi×αHH+RHi×αH+RLi×αL)÷k+(SHHi×αHH+SHi×αH+SLi×αL)}×Pi
Gas TGi = 0
z When the object of electricity distribution calculations is “thermostat ON time” (thermostat ON time distribution)
The electricity consumption index, gas consumption index and fuel consumption index are calculated with “thermostat ON cumulative time”.
y GHP
Electricity TEi = (SHHi×αHH+SHi×αH+SLi×αL)×Pi
Gas TGi = (SHHi×αHH+SHi×αH+SLi×αL)×Pi
y PAC
Electricity TEi = (SHHi×αHH+SHi×αH+SLi×αL)×Pi
Gas TGi = 0
Methodology for calculating electricity/gas consumption index across the whole distribution
group
The electricity/gas consumption index for the distribution group as a whole is the total electricity/gas consumption index for all indoor units
included in the relevant distribution group.
TOTALe is the electricity consumption index for the distribution group as a whole. TOTALg is the gas consumption index for the distribution
group as a whole. m is the number of indoor units included in the relevant group.
Electricity consumption index TOTALe = TE1 + TE2 + … + TEm
Gas consumption index TOTALg = TG1 + TG2 + … + TGm
Methodology for calculating electricity/gas consumption distribution for indoor unit No. i
REi is the electricity consumption distribution ratio. RGi is the gas consumption distribution ratio.
Distribution ratio of electricity
consumed
REi (%) = TEi / TOTALe ×100
Distribution ratio of gas consumed RGi (%) = TGi / TOTALg ×100
Methodology for calculating electricity/gas consumption distribution for area j
The electricity/gas consumption distribution ratio for the area as a whole is the total of electricity/gas consumption distribution ratio for all indoor
units included in the relevant area.
NEj is the electricity consumption distribution ratio in Area j. NGi is the gas consumption distribution ratio in Area j. n is the number of indoor
units included in the relevant area.
Distribution ratio of electricity
consumed
NEj = RE1 + RE2 + … + REn
Distribution ratio of gas consumed NGj = RG1 + RG2 + … + RGn
Note
y For models whose only setting for fan speed is “High”, or for models whose only settings are “High” or “Low”, you cannot give weighting for
each speed.
y Distribution ratios are rounded to two decimal places for display.
Methodology for calculating distributions
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