3
1.8 FROST PROTECTION SYSTEM
The
UNICA MAX
is equipped with a built-in frost protection
system, this enables the boiler to over-ride the time controls
– even if switched off – and operate the burner and/or pump,
should the temperature within the appliance drop below 5 °C.
Please note that the frost protection system is designed to
protect the appliance only, should frost protection be required
for the heating system, additional controls may be required.
NOTE:
the frost protection system is reliant on the appliance
having a permanent electrical supply, and being in a non-fault
condition.
1.9 APPLIANCE STATUS INDICATORS
Your appliance incorporates the REC10H UI (User Interface),
that displays information on appliance status and condition.
Depending on the type of application, some of the functions described in this manual might not be available.
The REC10H UI is a multi-functional control that enables you to view the operating status of your appliance at a glance; and
is also used to adjust/set the various ‘User’ settings, including temperature set-points and it also allows the management of
functions related to the solar system and the heat pump (if present). The REC10H UI also incorporates an embedded timer
that - if enabled - can be used to program and control the ON/OFF times for your central heating. Please consult you installer
for further advice on this function.
The REC10H UI features a backlit liquid crystal display.
1.10 CONTROL PANEL (REC10H)
REC10H
Boiler control panel
Key area
Confirm
back= return to the previous screen
cancel selection
return to the main screen (press > 2 sec.)
- From the main screen they allow you to choose between
the options: MENU, INFO, SET, STATE, PLANT.
- From the sub-menus they allow you to navigate through
the different options
This icon indicates that the OFF operating status mode has been set. Each ignition request is ignored except for the frost-protection function.
The pump anti-lock and frost-protection function remain active.
This icon indicates that WINTER mode has been selected (HEATING function enabled). If a heating request from the main zone is in pro-
gress, the icon will be flashing.
If there is a CH request from the additional zone, the number 1 or 2 is flashing.
Only if heat pump is present.
This icon indicates that cooling is active in the SUMMER state. If a cooling request from the main
zone is in progress, the icon is flashing. If a cooling request from the additional zone is in progress, number 1 is flashing.
This icon indicates that the circuit for domestic hot water production is enabled. When a domestic hot water request is in progress, the icon
flashes (default value - parameter: “water tank type = 0”). If we are outside the time slots for enabling the sanitary, the icon is crossed out
When the “central heating programming timing” is enabled this icon indicates that the system heating (main zone) is in AUTOMATIC mode
(the management of the heating requests follows what has been set with the timer).
If the heating function is not enabled during the current time frame, the icon will be crossed out.
When the “central heating programming timing” is enabled this icon indicates that the system heating (main zone) is in MANUAL mode (the
management of the heating requests does not follow what has been set with the programming timing, but it is always active).
OFF
This icon indicates that the main zone, when the “central heating programming timing” function is not enabled, has been set to off (not
active).
Only if heat pump is present.
This icon indicates that the management of a heat pump is enabled. When the heat pump is running,
then the icon is flashing.
Only if solar system is present.
This icon indicates that the management of a solar system is enabled. When the solar system
circulator is running, then the icon is flashing.
This icon indicates that the system is detecting the presence of a flame.
This icon indicates the presence of an anomaly or fault condition, and is always flashing.
Only with combined boiler and presence of heat pump enabled for domestic hot water.
The icon appears crossed
out with an “X” when the system works outside the activation times of the heat pump in the domestic hot water, while it flashes when
the heat pump is in operation to load the boiler.
Only if photovoltaic enabled.
When the icon is flashing, it means that the electrical productivity of the photovoltaic system is ade-
quate (closed contact). The system exploits the available energy.
Note:
The temperature of the heating outlet sensor is shown at the centre of the main screen. The value’s meaning is indicated at the bottom of the
display.
Whenever a heating request is in progress, the value displayed at the centre of the screen refers to the system’s flow sensor, with the relative
indication.
The value expressed in bar refers to the system’s water pressure.
The top of the screen shows the current date and time, as well as the outdoor temperature, if available.
System Icons may appear on both the left and right of the display; and they signify the following condition/status:
fig. 1
FRI
18/05/2021
12:17
MENU
INFO
SET
PLANT
HOT WATER TEMPERATURE
STATE
42
°C
P
1
2
1.3 bar
