Sime Murelle 20 BFT, Руководство пользователя

Страница: 97 / 108

97
ES
PT
GB
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.
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 while the sanitary
water tap is on, with the water running.
– L o c k t h e n u t ( 3 ) i n p l a c e , t u r n t h e
screw/nut (2) to the minimum pressu-
re indicated in Table 4 .
– Press the keys and while keeping
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.
– Press the key again to quit the func-
tion.
– Put the pipe back on the valve VENT
pressure test point.
– 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
sealant if necessary.
4.4 DISMANTLING THE CASING
The casing may be removed completely to
Fig. 20
3
2
1
KEY
1 Plastic tap
2 Minimum pressure adjusting nut
3 Maximum pressure adjusting nut
SIT 845 SIGMA
HONEYWELL VK 4105M - SIEMENS GVU 50
BOILER GAS MODELS PAR 1
METHANE 20 1
25 2
30 3
BF/BFT 35 4
LPG 20 5
25 6
30 7
35 8
METHANE 25 9
OF/OFT 30 10
LPG 25 11
30 12