Dhw Mode Setting - Ferroli OMNIA H Series Installation, Maintenance And User Manual

DHW mode setting

DHW:domestic hot water
DHW MODE SETTING typically consists of the following:
1. DHW MODE: enable or disable the DHW mode
2. TANK HEATER: set whether the booster heater is available or not
3. DISINFECT: set the parameters for disinfection
4. DHW PRIORITY: set the priority between domestic hot water heating and space operation
5. DHW PUMP: set the parameters for DHW pump operation. The functions above apply only to installations with a domestic hot
water tank.
How to set the DHW mode
To determine whether the DHW mode is effective.
Go to MENU> FOR SERVICEMAN> DHW MODE SETTING. Press OK. The following page is displayed:
Use ◄ ► to scroll and OK for enter. When the cursor is on
the DHW MODE as effective. When the cursor is on
as ineffective.
1. Go to MENU> FOR SERVICEMAN>DHW MODE SETTING>1.1 DHW MODE
Use ◄ ►and ▼▲ to scroll and adjust parameters. Use BACK to exit.
☞
NOTE
If DHW MODE is set "NON", the function is not available and so could not be selected by the user.
dT5_ON is the temperature difference for starting the heat pump, the picture below illustrates the dT5_ON function.
T5S is the target temperature for domestic hot water. T5 is
the actual temperature of domestic hot water. When T5 drops
to a certain temperature (T5≤T5S-dT5_ON) the heat pump
will be available. dT1S5 is the correct value for the target
outlet water temperature (T1S=T5+dT1S5).
T4DHWMAX is the maximum outdoor air temperature that
the heat pump can operate at for domestic water heating.
The unit will not operate if the outdoor air temperature goes
above it in DHW mode.
T4DHWMIN is the minimum outdoor air temperature that the heat pump can operate for domestic water heating. The heat pump
will turn off if the outdoor air temperature drops below it in water heating mode. The relationship between operation of the unit and
outdoor air
temperature can be illustrated in the picture below:
T_INTERVAL_DHW is the start time interval of the compressor in DHW mode. When the compressor stops running, the next time
the compressor turns on it should be T_INTERVAL_DHW plus one minute later at least.
30
SETUP OF THE SYSTEM
NON,press OK to set the DHW MODE
Heat by TBH or AHS
Heat by TBH or AHS
T4DHWMIN
T4DHWMIN
press YES, Press OK to set
T5
T5S
T5S-dT5_ON
Compressor
Heat by heat pump
Heat by heat pump
OFF
T4DHWMAX
T4DHWMAX
1 DHW MODE SETTING
1.1. DHW MODE
1.2. TANK HEATER
1.3. DISINFECT
1.4. DHW PRIORITY
1.5. DHW PUMP
ENTER
OK
1.1 DHW MODE
dT5_ON
dT1S5
T4DHWMAX
T4DHWMIN
t INTERVAL DHW
SCROLL
OFF ON
T4
YES NON
YES NON
YES NON
YES NON
YES NON
SCROLL
5 °C
10°C
43°C
-10°C
5 MIN
OFF