Hybrid Ghp/Ehp Control Function - Panasonic CZ-256ESMC3 Operating Instructions Manual

Hybrid GHP/EHP control function

What is Hybrid GHP/EHP control?
Hybrid GHP/EHP control makes it possible to remotely control from this unit so that air conditioning units with GHP and EHP in the same air
conditioning system operate using the optimum mode.
This unit controls the optimum operation mode by sending demand values via S-LINK communications to hybrid air conditioning units.
The demand values that are sent are determined by modes set on the screen and the operational load status of the hybrid air conditioning units.
 What is a hybrid air conditioning unit?
A hybrid air conditioning unit is one that is connected to GHP and EHP in the same air conditioning system, and is able to have its operation
controlled to run at reduced energy consumption and reduced cost by operating using the optimum ratio of each type.
System configuration
It is not possible to connect this unit to hybrid air conditioning units via communication adaptors (485 communication).
Only direct connection with HBS lines is supported.
As the hybrid air conditioning units consist of two systems, GHP and EHP, each outdoor unit is counted as two units. (Note this when counting
the number of connected units.)
Functionality
 Hybrid GHP/EHP control modes
Select one of the following modes to control the system.
Cost priority control
z
Control so that the power/gas usage charges are kept to a minimum.
Based on the values set for the power costs and gas costs for each of the 5 time slots set in the "Cost settings" screen, upper limit maps are
automatically generated according to the cooling or heating mode and the outdoor temperature, with the upper limit map suited to the current
conditions being automatically referenced.
Refer to the following page for information about upper limit maps.
Energy priority control
z
Control so that the energy consumed is kept to a minimum.
Values are fixed for each load level in the upper limit map.
EHP priority control
z
The system operates so that the EHP side is prioritised, with GHP operating only when capacity is insufficient.
Values are fixed for each load level in the upper limit map.
GHP priority control
z
The system operates so that the GHP side is prioritised, with EHP operating only when capacity is insufficient.
Values are fixed for each load level in the upper limit map.
 Demand control
Select one of the following modes to control the system.
Not set
z
Demand control is not performed.
EHP demand
z
GHP takes some of the load from EHP according to the demand level set for the point.
For each 1 point rise in the demand level, GHP takes over 1/3 of the load from EHP, and at the maximum demand level of 3 (the maximum),
EHP stops and only GHP is operating.
GHP demand
z
GHP demand control instructions are issued according to the demand level set for the point.
The instruction value can be freely changed in the "Gas demand settings" screen.
 Other functions
By making settings to use hot water demand control points, the system switches to hot water demand control only when the point is on. (The
operation is similar to the control behaviour when using GHP priority control.)
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