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.
Depending on the type of application, some of the functions described in this manual might not be available.
The REC10CH UI is a multi-functional control that enables you to view the operating status of your appliance at a glance; 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 REC10CH 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 REC10CH UI features a backlit liquid crystal display.
1.10 CONTROL PANEL (REC10CH)
REC10CH
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
Note:
The temperature of the hot water 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 flow sensor of the source active at that
moment (boiler or heat pump, if installed), 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:
1.9 APPLIANCE STATUS INDICATORS
Your appliance incorporates the REC10CH UI (User Interface),
that displays information on appliance status and condition.
fig. 1
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, 3-way valve 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
progress, 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. The
“P”
at the top of the domestic hot water icon indicates that the boiler preheating function is enabled; the
“P”
when
flashing indicates that a preheating request is in progress.
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” function 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
adequate (closed contact). The system exploits the available energy.
FRI
18/05/2021
12:17
MENU
INFO
SET
PLANT
HOT WATER TEMPERATURE
STATE
42
°C
P
1
2
1.3 bar
