Adjusting Maximum Output For Central Heating System; Adjusting Central Heating; Adjusting Central Heating System Pressure; Gas Conversion - Ferroli MODENA 80 E Installation, Servicing And User Instructions Manual

5.0 Adjustment
potentiometers
P1 = C H temperature
adjustment
P = H temperature
adjustment
P = C H utput adjustment
P = n t n as pressure
adjustment
P = n mum as pressure
adjustment

5.04 Adjusting maximum output for central heating system

This adjustment must be carried out electronically usin the "P3" adjustment screw startin with a cold central
heatin system Connect a pressure au e to the pressure test point downstream of the as valve Rotate the
temperature adjustment screw to maximum then re ulate the pressure to the value required, consultin the dia ram
s 4 and 5 pa e 7 Once this operation is complete, start up and shut down the burner two or three times usin
the thermostat Check each time that the pressure values remain as adjusted and that the burner i nites correctly
Otherwise further adjustment is necessary until the pressure remains stable on this value
. . hen carrying out this operation ensure that the
the adjustment ill not e accurate.
5.05 Adjusting central heating o
Central heatin water temperature is adjusted by rotatin the control knob
to increase water temperature, anticlockwise to reduce water temperature Temperature can be varied from a minimum
of 30°C to a maximum of 5°C However, we recommend not operatin the boiler below 50°C
5.0 Adjusting room temperature when a room thermostat is tted
Roomtemperatureiscontrolledbypositionin theroomthermostatknobtotherequiredvalue Thethermostatautomatically
controls the boiler, temporarily interruptin the electrical supply subject to the room heat requirements
5.0 Adjusting the central heating o
T
he thermal head t the difference in temperature between the delivery water and return water in the central
heatin circuit must be less than
multi-speed variator or switch on the pump itself Increasin the pump speed reduces t and vice versa The
minimum differential must not be less than 11°C
0
5.

Adjusting central heating system pressure

e
Th pressure of water in the central heatin
as described in para raph 3 07 pa e 19
. . To avoid incurrin unnecessary expense, in the event of boiler shut down, check that this is not caused by a lack
of electricity or as, or low water pressure before callin the Customer Technical ervice Helpline
0
5. 9 Gas con ersion
e
Th followin adjustment and conversion operations must be carried out by competent personnel FERROLI
Limited accepts no liability for dama e to property or
boiler by unauthorised persons
To convert the boiler from Nat Gas to LPG and vice versa, the main burner injectors must be replaced Minimum and
maximum pressures must then be adjusted on the as valve see Adjustment pa e 3
t
o e After convertin
kit near the data plate
t
o e injector diameters and pressures at the main urner are gi en in echnical
+
-
P5
+
-
P4
temperature
t y arying pump o
0° c This is obtained by varyin
system, read on the control panel pressure
the boiler from natural
-
oiler thermostat is set to maximum other ise
head
pump flow rate and head usin
personal injury resultin
as to liquid as, t the oran e plate in the conversion
P1
+ CH -
-
- part 63 Rotate the knob clockwise
au e, is adjusted
from tamperin
ata page 5 .
P2
+ DHW
+
P3
the
with the