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-
clockwise will diminish it.
– Adjust maximum pressure using the nut
(3) with a wrench to the maximum pres-
sure value indicated in
Table 4
.
– Do not adjust minimum pressure until
you have adjusted maximum pressure.
– Turn off the supply power to the modula-
tor, and keep the hot water tap turned
on.
– Lock the nut (3) in place, turn the screw
/nut (2) to the minimum pressure indi-
cated in
Table 4
.
– Turn off the boiler and turn it back on
again several times, keeping the hot
water tap turned on at all times and
checking that the maximum and mini-
mum pressure values correspond to the
established values; correct the settings if
necessary.
– Adjust, checking that you have restored
the power to the modulator.
– 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.
82
IT
ES
PT
GB
3
2
1
Fig. 22/a
KEY
1
Plastic tap
2
Minimum pressure adjusting nut
3
Maximum pressure adjusting nut
SIT 845 SIGMA
HONEYWELL VK 4105M
SIEMENS GVU 50
Содержание FORMAT.zip 5 25 BF TS
Страница 1: ...IT ES PT GB CERTIFICAZIONE DEL SISTEMA DI QUALITA AZIENDALE Format zip 5...
Страница 91: ......