24 - IE
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Summer mode operation with domestic hot
water heating
Winter operation mode with room central
heating with boiler
Winter operation mode with room central
heating with heat pump
2.5 USING THE BOILER.
Attention:
the boiler only works properly if it is
connected to the CAR
V2
, to the external probe
supplied as standard and combined with the
Immergas heat pump supplied separately.
Consequently all controls and adjustments are
requested to the CAR
V2
(refer to the relative
manual), while on the boiler the Stand-by button
“
”, the Reset button “C” and the menu access
button “D” remain active in any case.
Before ignition make sure the central heating
system is filled with water and that the manometer
(23) indicates a pressure of 1 - 1.2 bar.
Open the gas valve upstream of the boiler; it is
then possible to switch the boiler on.
When the boiler is switched off, the boiler display
only indicates the Stand-by symbol (10) the
CAR
V2
will show the connection error symbol
“ERR>CM” the CAR
V2
is in any case still powered
without losing the stored programs by pressing
the button (
) one switches the boiler on.
Connection to the CAR
V2
is detected
automatically and the boiler display indicates
the symbol (
).
Once the boiler is switched on, the display
indicates all operating information
•
Summer ( ):
in this mode the boiler only
operates for domestic hot water heating.
During domestic hot water heating, “DHW
ON” appears on the display (24) on the status
indicator (6) and at the same time as the burner
ignites, the flame presence indicator switches
on (8) with the relative power scale and the
indicator (9 and 7) with the instantaneous
outlet temperature from the primary heat
exchanger.
• Winter ( ):
in this mode the boiler functions
both for heating domestic hot water and
heating the environment. Depending on the
climatic conditions and on the set-point, the
control electronics establish whether it is more
convenient to use the boiler, the heat pump or
both to heat the environment.
- Room heating with boiler: during the request
“CH ON” appears on the display (24) on the
status indicator (6) and at the same time
as the burner ignites the flame presence
indicator switches on (8) with the relative
power scale and the indicator (9 and 7) with
the instantaneous outlet temperature from
the boiler. During the heating stage, if the
water temperature is sufficient to heat the
system, the boiler can operate just with the
activation of water circulation.
- Room heating with heat pump: during the
request “CH ON” appears on the display (24)
on the status indicator (6) and at the same
time as the heat pump starts-up the indicator
switches on (26) as well as the indicator (7)
with the instantaneous outlet temperature
from the boiler.
•
External probe operation (part. 18).
The
boiler flow temperature for room central
heating is managed by the external probe
depending on the external temperature
measured (Parag. 1.7 and par. 3.9 under item
“P66”). One can modify the operation curve
by acting on the heating selector of the CAR
V2
(see relative manual).
From this moment the boiler functions
automatically. With no demand for heat (heating
or domestic hot water production) the boiler goes
to “standby” function, equivalent to the boiler
being powered without presence of flame.
N.B.:
it is possible that the boiler may start-
up automatically if the anti-freeze function is
activated (13). Moreover, the boiler can function
for a brief period of time after a withdrawal of
domestic hot water in order to take the domestic
hot water temperature back into temperature.
•
Air conditioning (
):
in this mode the boiler
works both for domestic hot water heating as
well as cooling, the boiler manages solely the
system circulator pump and the heat pump for
room cooling starts to work depending on what
has been set on the CAR
V2
.
During cooling “COOLING” appears on the
display (24) on the status indicator (6) and at
the same time when the heat pump starts-up
the indicator switches on (26) as l’indicatore as
well as the indicator (7) with the instantaneous
outlet temperature from the boiler. The flow
temperature will be fixed at the “cooling set
point” (SPC) value set on the heat pump.
•
Stand-by
(
)
: Attention:
with the boiler in
stand-by mode, hot water cannot be produced
and the following safety functions are not
ensured: pump anti-block device, antifreeze
and three-way anti-block device and the
cooling function is also inhibited.
• CAR Off:
with CAR
V2
off, the boiler display
indicates the “CAR OFF” operating status;
the boiler safety functions remain in any case
active.
Cooling mode operation with heat pump
2-2
2-3
2-4
2-5
Summary of Contents for MAGIS Victrix
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