Ferroli XIGNAL CE Technical Information Installation And Service Instructions page 24

Delicately depress pin "d" and keep it fully pressed down. If the maximum pressure value must be
adjusted, slowly turn adjuster nut "e" in a clockwise direction to increase the pressure and in an
anticlockwise direction to lower the pressure value.
Having regulated the minimum and maximum pressure values, reset compensating tap "b". The current
value should now be reset to 165 mA.
Disactivate the TEST function by depressing button
automatically.
NOTE - The above listed adjustments establish the mechanical travel of the plunger of the "Modureg"
modulator between a minimum and maximum setting.
NOTE - The complete "Modureg" unit must be replaced if the "Modureg" coil fails to operate. Any attempts
to replace the coil alone would irreparably jeopardize the "Modureg" setting.
Anyone carrying out adjustments with these nut should proceed very delicately.
HONEYWELL valve VR 4605 NA 2007 (fig. 18)
Key
1. Inlet pressure test point
2. Outlet pressure test point
a. Electrical coil connection
b. Balance cap
c. Minimum pressure regulating nut
d. Maximum pressure pin
e. Maximum pressure regulating nut
f. "Adapter" fitting (only on L.P.G. versions)
g. Protective cap
24
TEST ACTIVATED
CURRENT 165 mA
. The boiler will now be ready to operate
d
e
c
b
a
g
2
f
1
Fig. 23