25
•
Connect a suitable pressure gauge to pipe
line or to outlet pressure tap of gas control
concerned, to measure burner pressure
(measuring point must be as near to burner
as possible).
•
Energize High-Low regulator, set gas control
in operation and wait until an outlet
pressure is recorded on pressure gauge.
•
Use a 8 mm wrench to turn adjustment
screw
for
maximum
pressure
setting
clockwise to increase or counter-clockwise
to
decrease
pressure,
until
desired
maximum burner pressure is obtained.
•
Check maximum pressure setting after
several times.
Adjusting minimum pressure setting
•
Connect a suitable pressure gauge to pipe
line or to outlet pressure tap of gas control
concerned, to measure burner pressure
(measuring point must be as near to burner
as possible).
•
Disconnect electrical connection of High-
Low regulator.
•
Set gas control in operation and wait until an
outlet pressure is recorded on the pressure
gauge.
•
When minimum pressure setting needs
adjustment, then use a 3.5 mm screw driver
to turn adjustment screw for minimum
pressure setting clockwise to increase or
counter-clockwise to decrease pressure,
until desired minimum burner pressure is
obtained.
•
Wire High-Low regulator coil in circuit.
Check
maximum
pressure setting and re-adjust
if necessary. Check minimum pressure setting
again.
IMPORTANT
Adjustments should be made by qualified
persons only.
If he appliance manufacturer supplies checkout
and/or service and maintenance instructions,
carefully follow them. If such instructions are not
provided, then follow the procedure as outlined
below.
Allow time for pressure to stabilize before making
adjustments.
It is recommended that the Modureg is
operated a few times to ensure correct setting.
The protective cap must be removed before any
adjustment can be made. Remove the small
retaining screw and lift the cap carefully.
Take care that after any adjustment, cap and
O- ring are re-fitted (if applicable).
The minimum pressure setting must first be
adjusted to ensure that burner will safely
light up, then maximum pressure setting can
be adjusted.
Any adjustment of minimum pressure setting
influences the maximum pressure setting.
Adjusting minimum pressure setting
•
Disconnect pressure feedback connection (if
applicable).
•
Connect a suitable pressure gauge to pipe
line or to outlet pressure tap of gas control
concerned, to measure burner pressure
(measuring point must be as near to burner
as possible).
•
Disconnect electrical connection to
Modureg.
•
Energize operator, set control in operation
and wait until an outlet pressure is recorded
on pressure gauge.
•
If
minimum
pressure
setting
needs
adjustment turn the adjustment for minimum
pressure setting clockwise for increasing or
counter-clockwise for decreasing pressure
until the desired minimum outlet pressure is
obtained.
•
Check that main burner lights easily and
reliably at minimum pressure.
•
Check maximum pressure setting and
readjust if necessary.
•
Refit cap and “O” ring, and reconnect
pressure feedback connection (if applicable)
Adjustment of optional
modulation regulator
6. Commissioning & Testing cont.
