Sime ECOMFORT 30 HE, Инструкции по установке и обслуживанию

Страница: 18 / 40

18
SIME SUPPORT
THE BENCHMARK INITIATIVE
All relevant sections of the logbook must be
filled in at the time of installation and there-
after service information on the back page
of the logbook. Commissioning of the boiler
is not complete until the logbook is filled in.
4.1 FILLING THE WATER SYSTEM
– Open the flow and return valves.
– Loosen the automatic air vent cap.
– Open all radiator valves and system air
vents. Fill the system with water using
one of the approved methods described
i n s e c t i o n 2 . 3 . 2 t o a b o u t 0 . 5 b a r
greater than the system design pres-
sure. Close all air vents. Do not close
the A.A.V.
– Check the system for water soundness.
– Completely drain the appliance and heat-
ing system, thoroughly flush the system,
and refill the system design pressure.
– Before refillimg check and clean the Aqua-
guard filter (4.9).
4.1.1 Flow Rate Adjustment
The DHW flow rate should be set using the
flow rate adjuster (see fig. 16/a) to the
value shown in section 1.3.
4.2 GAS VALVE
The boilers are equipped standard with the
SIT 845 SIMGA/HONEYWELL VK 4105M
/SIEMENS VGU 50 gas valve (fig. 21).
The gas valve is set at two pressure values:
maximum and minimum. According to the
type of gas burnt, these correspond to the
values given in Table 6 .
The gas pressures at the maximum and
minimum values, are factory set. Conse-
quently they must not be altered. Only when
you switch the appliance from one type of
gas supply (methane) to another (butane or
propane), it is permitted to alter the opera-
ting pressure.
4.3 GAS CONVERSION
This operation must be per formed by
authorised personnel using original Sime
components.
To convert from natural gas to LPG or vice
versa, perform the following operations (fig.
22):
– Close the gas cock.
– Disassemble the burner manifold (3).
– Replace the main nozzles (6) supplied in
a kit, inserting the copper washer (4).
Use a ø 7 spanner to perform this ope-
ration.
– Remove the “METANO/GPL” connector
link on the card and set it in the posi-
tion corresponding to the gas to be
used (4 fig. 15).
– To set the values of maximum and mini-
mum gas pressure, follow the instruc-
tions given in section 4.5.1.
– After have ultimated the conversion of
the boiler, please stick onto the casing
panel the plate showing the relevant fee-
ding gas which is included into the kit.
NOTE: When reassembling components
which you have removed, replace gas
seals; test all gas connections after
assembly using soapy water or a product
made specifically for the purpose, being
sure not to use open flame.
4.5.1 Adjusting valve pressure
Set maximum and minimum pressure on
gas valves as follows (fig. 22/a):
– Connect the column or a manometer to
the intake downstream of the gas valve.
Disconnect the valve VENT pressure test
point tube (5 fig. 21).
– Remove the cap (1) from the modulator.
– Place the hot tap water potentiometer
knob at the maximum position.
– Turn on the boiler using the four-way
switch and turn on a hot water tap all
the way.
– Remember that rotating clockwise will
increase pressure while rotating anti-
4 USE AND MAINTENANCE
3
4
2
1
5
6
1
2
4 3 5
SIT 845 SIGMA HONEYWELL VK 4105M
KEY
1
Modulator
2 EV1-EV2 coils
3 Pressure inlet upstream
4 Pressure inlet downstream
5 VENT pressure test point
TABLE 6
Burner Modulator Burner Modulator
Type of gas max. pressure mbar current min. pressure mbar current
25 HE 30 HE 35 HE mA 25 HE 30 HE 35 HE mA
G20 * 11.5 11.5 13.5 130 2.0 2.6 2.2 0
G30 28.5 28.3 28.2 165 4.8 6.3 4.5 0
G31 36.5 36.2 36.2 165 4.8 6.3 4.5 0
(*) Max. burner pressure is guaranteed only when the supply pressure exceeds the max. burner pressure by at
least 3 mbar.
Fig. 21
Fig. 22
KEY
1 Swivel connection 1/2”
2 Locknut 1/2”
3 Burner manifold
4 Washer ø 6.1
5 Burners
6 Nozzle M6
7 Screw
WARNING: To ensure a perfect seal,
always use the washer (4) supplied
in the kit when replacing nozzles,
even in burner units for which it is
not specified.
1
2
3 4 5
SIEMENS VGU 50