Dhw Storage Tank Heater Only - Mitsubishi Electric i-BX-N Technical Manual

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Table of Contents

TM_i-BX(-N)_NC05_00_06_20_EN

Compressor

MaxSet instant T

Banda proporzionale

DHW (0513)

DHW setpoint

(0022 or 0023)

DHW proportional

band (P 0513)

MaxSet instant T = the stor age tank temperature

at which HP inhibition has trigger ed

DHW storage tank T [°C]

OFF

Whenever the unit stops producing DHW, it becomes available for the production of system water.

In order to prevent the unit from remaining in DHW production mode for an excessive period of time, it will be necessary to set a maximum time for

such mode using parameter 0227 "Max time for DHW request", after which the unit will return to be available for the production of system water. At

the expiry of the time in 0227, the unit will be made available for the production of system water for a period of time set in 0226 "min time plant", which

must elapse even if there is no system request. This time is needed to prevent immediate return to the production of DHW following a request for

DHW, which will occur at every expiry of 0227, therefore preventing the possibility that the system is never served.

If the 0227 time expires when 0022-0513 < B3 < 0022 or

0223-0513< B3 <0023, at the expiry of 0226 the unit will return to DHW production mode until 0222 or 0223 has been fully reached.

The selection of "system" or "DHW" operation priority through parameter 0014 will mean that when the unit is switched on, in case of contemporary

system and DHW request the machine will meet either demand based on the set priority. After this, the unit will produce system or DHW water based

on the times set in 0226 and 0227.

For the default values of the various parameters, see the parameters table

5.2.2