Sime MURELLE 25 OF Manual Del Usuario página 97

The parameters will scroll up and down
with the keys and .
The display pane will show the values of the
parameter PAR 1.
If, for example, the boiler in question is a 25
BF fuelled by methane, the following setting
SET 2 will appear:
To change the fuel to LPG, it is necessary to
set SET 6, 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.
BOILER GAS MODELS
METHANE 20
25
30
BF/BFT 35
LPG 20
25
30
35
METHANE 25
OF/OFT 30
LPG 25
30
4.3.2 Adjusting valve pressure
Set maximum and minimum pressure on
gas valves as follows (fig. 20):
– Connect the column or a manometer to
the intake downstream of the gas valve.
In "BF/BFT" models, disconnect the
valve VENT pressure test point tube (5
fig. 18).
– Remove the cap (1) from the modulator.
– Press the key for a few seconds and
completely open the hot sanitary water
faucet.
– Press the key
.
– Remember that rotating clockwise will
increase pressure while rotating anti-
clockwise will diminish it.
– Adjust maximum pressure using the nut
(3) with a wrench to the maximum pres-
sure value indicated in Table 4.
– Adjust the maximum pressure before
adjusting the minimum.
– Press the key
water tap is on, with the water running.
– Lock t he nut (3) in place, tur n t he
screw/nut (2) to the minimum pressu-
re indicated in Table 4.
– Press the keys
the hot sanitary water running all the
time, and check that the maximum and
minimum pressures correspond to the
set values; if necessary correct the regu-
lation.
SIT 845 SIGMA
.
PAR 1
1
HONEYWELL VK 4105M - SIEMENS GVU 50
2
3
4
5
6
7
8
9
10
11
12
KEY
1 Plastic tap
2 Minimum pressure adjusting nut
3 Maximum pressure adjusting nut
– Press the key
tion.
– Put the pipe back on the valve VENT
pressure test point.
while the sanitary
– Remove the manometer, remembering
to tighten the screw for closing the pres-
sure test point.
– Put the plastic cap (1) back on the modu-
lator and seal with a drop of coloured
and while keeping
sealant if necessary.
4.4
The casing may be removed completely to
1
2
again to quit the func-
DISMANTLING THE CASING
3
Fig. 20
ES
PT
GB
97