Methodology For Calculating Distributions - Panasonic CZ-256ESMC3 Operating Instructions Manual

Methodology for calculating distributions

This unit is able to make simplified calculations of air conditioning distribution and energy (electricity and
gas) usage with the cumulative operating time (thermostat ON/thermostat OFF) of indoor units and the
performance values of indoor units.
Calculations for time distribution
Calculate the electricity/gas consumption index for indoor units individually or as a part of a distribution group, and calculate the electricity/gas
consumption distribution ratios for indoor units individually or as a part of an area group.
Types of parameters used to calculate distributions
The following parameters are used for calculating time distributing.
Parameter
RHHi
RHi
RLi
SHHi
SHi
SLi
Pi
k
αHH
αH
αL
* Cumulative operating time is equal to thermostat ON cumulative time PLUS thermostat OFF cumulative time
Attention
y If the distribution mode (→ "Set the distribution mode" (P.160)) is set to "Time", do not allocate PAC and GHP to the same distribution
groups.
The cumulative operating time of indoor unit No. i* (high)
The cumulative operating time of indoor unit No. i* (mid)
The cumulative operating time of indoor unit No. i* (low)
The cumulative thermostat ON time of indoor unit No. i (high)
The cumulative thermostat ON time of indoor unit No. i (mid)
The cumulative thermostat ON time of indoor unit No. i (low)
The performance of indoor unit No. i (a value equivalent to kW)
Weighting coefficient for electricity when the thermostat is ON and when it is OFF
Weighting coefficient for fan speed when the speed is high
Weighting coefficient for fan speed when the speed is mid
Weighting coefficient for fan speed when the speed is low
217
Explanation