Use And Maintenance - Sime MURELLE HE 50 R Manual De Usario

4

USE AND MAINTENANCE

4. 1 GAS VALVE (fig. 16)
The boiler is supplied as standard with a
gas valve, model SIT 822 NOVAMIX (fig.
16).
4
3
2
1
KEY
1 Upstream pressure intake
2 Intermediate pressure intake
3 Air signal inlet (VENT)
4 Downstream pressure intake
5 Shutter
6 OFF-SET
4.2 GAS CONVERSION (fig. 17)
This operation must be performed by
authorised personnel using original Sime
components.
To convert from natural gas to LPG or vice
versa, perform the following operations
– Close the gas cock.
– Replace the nozzle with seal gasket OR
(1) with the one supplied in the transfor-
mation kit.
– Inspect all the gas connections using
soapy water or relevant products. Do not
use naked flames.
– Apply the nameplate with the new gas
flow layout.
– Calibrate the maximum and minimum
pressures of the gas valve following the
instructions provided in paragraph 4.2.2.
4.2. 1 New fuel configuration
For access to the installer's parameters,
press simultaneously keys
5 seconds (3 fig. 12).
The parameters will scroll up and down
with the keys and .
The display pane will show the values of the
parameter PAR 1. If the boiler is a methane
(G20) model, SET 5 will be displayed:
To change the fuel to propane (G31), it is
94
5
6
Fig. 16
necessary to set SET 13, by pressing the
key .
The standard display will automatically
return after 10 seconds.
The table below shows the SET settings to
enter when the type of gas fuel is changed.
GAS
METHANE
(G 20)
and for
PROPANE
(G 31)
4.2.2 Calibrating the gas valve
pressures
Measure the CO
analyzer.
Sequence of operations:
MODEL PAR 1
- 1
- 2
- 3
- 4
Single (50 R) 5
Sequence/cascade 6
- 7
- 8
- 9
- 10
- 11
- 12
Single (50 R) 13
Sequence/cascade 14
- 15
- 16
values with a combustion
2
1
1) Press and hold the button down for a
.
few seconds
2) Press the button for a few seconds
3) Identify the CO values at max. power by
2
adjusting the shutter (5 fig. 16):
MAX power
CO (Methane) CO (Propane)
2 2
9,2 ±0,2 10,3 ±0,3
4) Press the button for a few seconds
5) Identify the CO values at min. power by
2
adjusting the OFF-SET regulation screw
(6 fig. 16):
MIN power
CO (Methane) CO (Propane)
2 2
9,5 ±0,2 10,0 ±0,3
6) Press the buttons several times to
check the pressures and
ge them if required.
7) Press the button once more to quit
the function.
4.4 DISASSEMBLING
THE SHELL (fig. 19)
To simplify maintenance operations on the
boiler, it is also possible to completely remo-
ve the shell, as shown in figure 19.
Turn the control panel to move it forward
Fig. 17
.
.
chan-