Honeywell VE4000 Series Instruction Sheet page 7

ADJUSTMENT AND FINAL CHECKOUT
WARNING

Adjustments must be made by qualified persons only
CAUTION

To ensure a safe closing of the valves, it is essential
that voltage over the terminals of operators is
reduced to 0 Volt.
IMPORTANT
To ensure a satisfactory setting of the valve the
pressure drop over the valve should be at least 10%
of the supply pressure or 2.5 mbar which ever is the
greatest.
VExxxxB SERIES
(see fig 7.)
Flow rate adjustment

Remove the cap screw from top of the coil.

Place a socket head wrench into the adjustment nut.

Turn wrench counter--clockwise to increase or clockwise
to decrease flow rate.

Replace cap screw.
Flow adjustment fig 7
VExxxxC SERIES
(see fig. 8, 9 and 10)
The following characteristics can be adjusted:

flow rate

step pressure

opening speed
Step pressure adjustment

Remove the cap from top of the coil by loosening both
screws.

Place a screw driver in the slot of adjustment screw which
is situated in center of the valve.

Turn screw driver counter--clockwise to increase or
clockwise to decrease step pressure.

Replace cap on top of the coil.
Step pressure adjustment. Fig 8
Opening speed adjustment

Remove the cap from top of the coil by loosening both
screws.

Place screw driver in the slot of adjustment screw which is
of center line.

Turn screw driver counter--clockwise to increase the
opening speed and therefore the time till full opening will
decrease.

Turn screw driver clockwise to decrease the opening
speed and therefore the time till full opening will increase.

Replace cap on top of the coil.
Opening speed adjustment. Fig 9
)
Flow rate adjustment

Remove the cap screw from top of the coil by loosening
both screws

Place a wrench onto the adjustment nut.

Turn wrench counter--clockwise to increase or clockwise
to decrease flow rate.

Replace cap screw.
Flow rate adjustment. Fig 10
Final checkout of the installation
Set appliance in operation after any adjustment and observe
several complete cycles to ensure that all burner components
function correctly.
7
Honeywell
ISTR0018 1602RA-NE