Ariston microGENUS HE 24 MFFI, Инструкции по установке и обслуживанию

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38
Setting the minimum and the maximum power of the
boiler
1. Check that the supply pressure and dynamic working
pressure to the gas valve is a minimum of 20 mbar for
natural gas and 29 and 37 mbar for LPG (G30 or G31).
2. To do this, loosen the screw “A”.
Fit the pipe of the pressure gauge to the inlet pressure
connection of the gas valve “B” and check for the
correct standing pressure, then operate the appliance
and check for the correct working pressure.
When you have completed this operation, replace the
screw “A” securely into its housing to seal off the gas
(check for tightness).
3. To check the pressure supplied by the gas valve to the
burner, loosen the screw “C”. Fit the pipe of the
pressure gauge to the pressure outlet test point of the
gas valve “D”.
Disconnect the compensation pipe “D1” either from
the gas valve or from the sealed chamber.
4. Turn the On/Off knob to “ON” position -green light- and
ensure that the hot water temperature control knob is
set to maximum.
Turn on the boiler by running a hot water tap.
Adjust the 10mm nut
“E” on the modureg to set the
maximum gas pressure, turn the nut clockwise to
increase and anti clockwise to decrease the pressure
until the required pressure is achieved (see
T
ABLE
A
Page 37).
5. To set the minimum power, disconnect a supply
terminal “F1” from the modureg and adjust screw “F”
(ensure that the 10mm nut is held in position). Turn the
screw clockwise to increase the pressure and anti-
clockwise to decrease the pressure (displayed on the
pressure gauge) corresponding to the minimum power
(see T
ABLE
A Page 36).
IMPORTANT!
Whenever you disassemble and reassemble the gas
connections, always check for leaks using a leak
detection fluid.
4.2 A
DJUSTING THE
G
AS
P
RESSURES
A A
B B
C D
1
2
E
F
3
4
B
C
E
F
D
D1
F1
A