Ferroli OMNIA HYBRID C, Installation, Maintenance And User Manual

Page: 54 / 116

54
EN
Cod. 3541T090 - Rev. 00 - 06/2019
REMOTE CONTROLLER - SERVICE MENU
8.3 DHW mode setting
☞
NOTE
DHW mode is set to “ NOT ”, the function is not available and therefore can-
not be selected by the user.
DHW production is guaranteed by the boiler integrated in the indoor unit.
The DHW set point must therefore be set on the boiler controller (see “DHW tem-
perature adjustment” on page 66).
FACTORY
SETTINGS
1 DHW MODE SETTING
1.1. DHW MODE
SCROLL ENTER
OK
YES NON
fig. 102 -
8.4 COOL mode setting
COOL MODE SETTING typically consists of the following:
1. COOL MODE: to set if the COOL mode is active or not
2. T1S RANGE: Selecting the range of target outlet water temperature
3. T4CMAX: Setting the maximum outdoor air operation temperature
4. T4CMIN: Setting the minimum outdoor air operating temperature
5. dT1SC: Setting the temperature difference for starting the heat pump
6. t_INTERVAL_C: to set the compressor stop time before the next start in cool
mode
To determine whether the COOL mode is effective, go to MENU> FOR SERVICE-
MAN> COOL MODE SETTING. Press OK. The following page will be displayed::
FACTORY
SETTINGS
2 COOL MODE SETTING
COO MODE
T1S RANGE
T4CMAX
T4CMIN
dT1SC
SCROLL
LOW HIGH
43°C
20°C
5°C
YES NON
2 COOL MODE SETTING
dTSC
t_INTERVAL_C
SCROLL
2/2 1/2
2°C
5MIN
fig. 103 -
FACTORY
SETTINGS
2 COOL MODE SETTING
COO MODE
T1S RANGE
T4CMAX
T4CMIN
dT1SC
SCROLL
LOW HIGH
43°C
20°C
5°C
YES NON
2 COOL MODE SETTING
dTSC
t_INTERVAL_C
SCROLL
2/2 1/2
2°C
5MIN
fig. 104 -
When the cursor is on COOL MODE, Use ◄► to select YES or NON. Then press
OK to enable or disable the cool mode. When the cursor is on T1S RANGE. Use
◄►to select the range of outlet water temperature. When LOW is selected, the
minimum target temperature is 5°C. If the climate-related curve function (corre-
sponds to “weather temperature set” in the user interface) is enabled , the cur-
ve selected is the low temperature curve. When HIGH is selected, the minimum
target temperature is 18°C, if the climate-related curve function (corresponds to
“weather temperature set” in the user interface) is enabled, the curve selected is
the high temperature curve.
When the cursor is on T4CMAX,T4CMIN,dT1SC,dTSC or t_INTERVAL_C, Use
◄► and ▼▲ to scroll and adjust the parameter.
☞
NOTE
If COOL MODE is set “NON”, the function is not available and so could not
be selected by the user.
T4CMAX is the maximum outdoor air temperature in COOL mode. The unit cannot
work if the outdoor air temperature is higher.
T4CMIN is the minimum outdoor air operating temperature in COOL mode. The
unit will turn off if the outdoor air temperature drops below it. The relationship
between the operation of the unit and outdoor air temperature is shown in the
picture below:
OFF
COOL
T4
OFF
T4CMAX
T4CMIN
COOL
MODE
fig. 105 -
dT1SC is the temperature difference between T1 (actual outlet water temperature)
and T1S (target outlet water temperature) for starting the unit in cool mode. Only
when T1 is high enough will the unit turn on, and will turn off if T1 drops to a certain
value. See the diagram below:
T1S+dT1SC
OFF
COOL
T1
COOL
MODE
fig. 106 -
Operation note
Minimum water outlet temperature (Twout min) according to the outdoor air
temperature read by the T4 probe.
T4
[°C]
≤10 11 12 13 14 15 16 17 18 19 ≥20
Twout min [°C]
10 9 9 8 8 7 7 6 6 6 5
With set-point T1S ≤10 the unit starts again when min (T1, Twout) ≥ 12 ° C;
so for example with T1S = 7 ° C and dT1SC = 3 ° C the unit does not start
again when T1 = 10 (7 + 3), but it can start again only if T1 and Twout reach
at least 12 ° C.
If the remote wired controller has been set as room thermostat (thanks to the
activation of the temperature probe in the controller) the dTSC parameter is the
temperature difference between Ta (internal measured room temperature) and TS
(internal room temperature set point) to be able to restart the unit in COLD mode.
See graphic below.
TS+dTSC
OFF
COOL
Ta
COOL
MODE
fig. 107 -