750-437
Q Series Full Modulation
3-15
Operation
D) Access the P0 parameter
With the display showing
{OFF}
Press
(VSD / F & A)
to enter parameters and the display shows:
{400: SEt}
(
“
400
”
flashing)
press (
enter
) and control displays:
{run}
Press
(ESC / - & +)
and the control prompts you with the P0 setting:
{P0: : GG.c}
where “GG.c” = current fuel-valve open angle in degrees.
E) Adjust P0 setting:
AIR-
Airspeed setting is typically between 20 and 30%. If airspeed needs adjusted, press and hold (VSD
/ F & A) and the display shows:
{0n: : SS.x}
with “SS.x” value flashing
where “SS.x” = airspeed %. While holding (VSD / F & A), press (+) or (-) to adjust the setting.
When the intended value is reached, release all buttons.
GAS-
The gas valve opening is typically between 2 - 12° open. If the gas valve position needs adjust-
ment, hold down
(A)
-the display shows:
{0A: : GG.c}
with "GG.c" value flashing
Increase the gas value by an increment of 2.0 until clean ignition is achieved.
While holding
(A)
, press
(+)
or
(-)
to adjust the setting. When the intended value is reached,
release all buttons and the display shows:
{P0: : GG.r}
where "GG.r" = revised fuel-valve setting in degrees.
Note:
If the burner does not ignite by the value of 12, check regulator inlet and outlet pressure,
valve wiring, shut off valve positions and bleed gas line before continuing with additional adjust-
ment.
Press
(ESC / - & +)
twice and the control prompts you with:
{OFF UPr}
Note:
"OFF UPr" indicates the control will not start until the revised P0 is proven.
F) Test revised P0 ignition point by burner trial for ignition
With the display showing
{OFF UPr}
Press
(VSD / F & A)
to enter parameters and have control display:
Содержание ProFire Q Series
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