Hi-T2
Centralised controller
27
In the time slots where the function is active, the machines enabled to DHW production are set in the seasonal mode foreseen by
the plant scheduler of the chillers with the addition of DHW mode, namely respectively:
•
DHW
•
DHW
•
DHW only
4.6.4.4
ANTILEGIONELLA DISINFECTION CYCLE WEEKLY PROGRAMMING
If the sanitary function is enabled (from system main page ->
Configuration
->
Service menu
->
Parameters
->
Chiller
->
Chiller name
-
>
H10: DHW presence = 1
), you can program the times of the individual days of the week for the anti-legionella disinfection cycle.
You select only the starting time (with 15 minutes steps), since the duration of the cycle is defined by a parameter with service
access rights (System main page -->
Configuration
->
Service menu
->
Parameters
->
Keyboard
->
Par 31/65
:
Legionella disinfection
duration
).
To carry out the programming you must enter “
Programs
” -> “
Antilegionella
”; the procedure is simple because you only need to
select the cycle starting day and time (see Picture below).
Figure 27. Chronothermostat, "Antilegionella" page.
The set timeline appears red-coloured.
The pink line shows any setting of the previous day that overruns into the present day because the duration exceeds midnight.
It is necessary to enable the electric heaters in DHW integration, by setting the parameter
R15
= 1.
OPERATION:
•
When the anti-legionella cycle is expected, the heat pump unit changes AUTOMATICALLY to DHW mode in order to reach the
setting values of the parameter
R27
(50°C)
•
When the DHW temperature probe meets the value of
R27
, the compressor will stop operation and the DHW electric heater
(DO = 26) will start after
R16
(1min)
•
The DHW electric heater turns off if one of the following conditions is met:
o
The DHW probe detects a temperature =
R25
(80°C), hysteresis 'cut-on' of 1°C.
o
The programmed cycle finishes.
4.6.5
ROOM THERMOSTAT
The Hi-T2 control panel can operate as a typical room thermostat.
Zone 1 is always present.
The room thermostat function will be enabled/disabled for each zone using the corresponding button at the bottom of the zone
status setting screen.
STATUS SETUP
Off
Programmed
Manual
Thermostat
not active
Manual eco
1/01/2016
Figure 28. Status setup
The thermostat activation key has two states depending on whether the function is enabled or disabled.
Anti-Legionella
Day
Time
Monday
From
STATUS SETUP
Off
Programmed
Manual
Manual eco
Thermostat
not active
