TM_i-BX(-N)_NC05_00_06_20_EN
MEHITS S.p.A.
●
TECHNICAL MANUAL
Version NC05 - Translation of the Original Instructions
59
DHW storage tank T [°C]
Compressor
ON
OFF
DHW proportional
band (P 0513)
DHW setpoint
(0022 or 0023)
Banda proporzionale
DHW (0513)
MaxSet instant T
MaxSet instant T = the storage tank temperature
at which HP inhibition has triggered
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
DHW STORAGE TANK HEATER ONLY
In this configuration, DHW storage tank needs will only be met by the electric DHW storage heater (NO10), based on the function described below.
DHW storage tank T [°C]
Heater
ON
OFF
DHW proportional
band (P 0513)
DHW setpoint
(0022 or 0023)
For the default values of the various parameters, see the parameters table.
