Sime MURELLE EV Serie Manual Del Usuario página 108

– 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.
– 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 and
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.
Codice/Code 8112800
Modello/Model MURELLE EV 25 BF
Matricola/Serial n. 9999999999
PAR 1 = 2 (G20) / 6 (G30-G31)
PAR 2 = 5
108
SIT 845 SIGMA
1
2
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 keeping
– 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
HONEYWELL VK 4105M - SIEMENS VGU 56
3
again to quit the func-
4.3
The casing may be removed completely to
facilitate boiler maintenance, as shown in
fig. 21. Turn the panel control forward for
access to the internal components of the
boiler.
ATTENTION
Before removing or refitting the front
panel of the boiler, open the small upper
plastic door.
sealant if necessary.
DISMANTLING THE CASING (fig. 21)
Fig. 20
Fig. 21