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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
Fan speed
WORK MODE
D
– house heating,
B
– boiler priority,
R
– paralel pumps,
L
– summer mode.
12.9.1. House h
eating priority
If you select this option, the controller will
switch to the house heating mode. The
central heating pump starts to run above
the pump activation temperature (set to
35°C by default). Below this temperature
(minus central heating hysteresis of 2°C),
the pump is shut off. While in the house
heating mode, the letter D is displayed
in the bottom right corner of the main
screen.
12.9.2. HCW priority
Activating the hot consumption water
priority will cause the regulator to switch
into the water heater priority mode. In
this mode, the (hot consumption water)
heater pump is activated until the set
H.C.W. temperature is reached. Then, the
H.C.W. pump is shut off and the C.H. pump
is activated. The central heating pump will
run until the water heater temperature
drops below the set point value (and the
H.C.W. hysteresis); then, the C.H. pump is
shut off and the H.C.W. pump is activated.
In this mode, the fan is operated as long
as the temperature is below 62°C to
prevent the boiler from overheating. The
hot consumption water priority function
consists in that the consumption water
is heated up before heating up water
in radiators. Change of the set HCW
temperature can be done by pressing
Exit button (holding down for a few
seconds). The display will show the HCW
temperatures screen for a few moments.
Set temperature can changed with
buttons UP and DOWN. After few seconds
the display will return to its previous
state. When HCW priority mode is on
the main the letter B is show in the lower
right corner of the display.
ATTENTION: The boiler should
have non-return valves mounted
on the central heating pump
circuit and the hot consumption
water pump circuit. A valve
mounted on the hot consumption
water pump will prevent hot
consumption water from being
drawn from the water heater.
12.9.3. Parallel pumps
In this mode, the pumps start to run
in parallel above the pump activation
temperature (set by default to 35°C). The
central heating pump runs continuously,
while the hot consumption water pump
stops after the set point temperature
is reached in the boiler; it then restarts
when the temperature drops by 2°C.
Change of the set HCW temperature can
be done by pressing button EXIT (holding
down for a few seconds). The display will
show the HCW temperatures screen for
a few moments. Set temperature can
changed with buttons UP and DOWN.
After few seconds the display will return
to its previous state.
