9
INSTALLATION AND OPERATION MANUAL
3.8 Standard Configuration
The scheme in fig.9 shows the simplicity of
the Ungaro boliers/thermostoves installa-
tion. The plumbing connections are at the
rear of the boiler, connect them to the the
respective flow and return pipeworks. Pro-
vide an external filling hose on the central
heating return pipework.
P1 - circulation pump
S1 - water probe
KW - climatic probe
P1 S1
KW
fig. 9 - Standard Configuration
3.9 Heating system with DHW kit
There are four hydraulic connections in this
configuration: domestic hot water flow,
external filling, heating system flow and
return (max. 1500 mBar), fig. 10.
Domestic hot water supply is available only
if the boiler/thermostove is on with the fla-
me present. Passing through the plate heat
exchanger (20kW) the city water tempe-
rature increases by 30°C compared to its
initial value. The data may vary depending
on the condition of the kit. When dome-
stic hot water is used, the central heating
is suspended.
KW
FL
P2
P1
S1
P1 - circulation pump
P2 - 3 way valve
FL - flow sensor
KW - climatic probe
fig. 10 - Configuration with DHW kit
3.10 Configuration with heating sy-
stem and buffer tank
In the sheme on fig.11 the generator is
connected to an external vessel.The mo-
therboard manages both the boiler and the
buffer. Set the temperature required in the
buffer tank. The boiler heats the water in
the tank first. When the set temperature
is reached, the valve P2 sends hot water in
the radiators.
If climatic probe is enabled, the mother-
board manages the system temperature in
base of the external one. Only the tank sto-
red water temperature can be set manually.
If the climatic function is off, both tempera-
tures are to be set manually. In “Summer”
mode the boiler heats only the water in the
tank. It turns off when the temperature set
is reached and turns on according to the
temperature settings.
P2
S2
KW
P1 S2
P1 = circulation pump
P2 = 3 way valve
S2 = buffer tank probe
KW = climatic probe
fig. 11 - Configuration with heating
system and DHW Tank
In case of anomalies or excessive
temperatures, the valve P2 dissi-
pates hot water into the radiators.
Keep the radiators open for extra
security.
3.11 Configuration with buffer tank
In this sheme (fig.12) the boiler is con-
nected to an external vessel. When the
temperature set in the tank is reached, the
boiler turns off and turns on according to
the temperature settings. If climatic sen-
sor is enabled, the motherboard manages
the water tank temperature in base of the
external one. It can’t be set manually.
