page no. 44 of 68
CP
x Range Users, Installation & Servicing Instructions Doc Ref M201 issue 2.9 Nov 2018.
Correct operational start-up
0s
Start of heat demand.
Burner begins the ignition cycle.
0s-4s
The burner is in stand-by.
4s-44s
Pre-purge with opened air damper
44s
Ignition 1st stage.
47s-52s
Ignition 2nd stage.
1. Remove the burner cover by undoing the two screws
either side of the housing.
Adjustment of the first stage air damper position is
carried out by setting the air damper.
2. Loosen locknut (clockwise) and adjust by turning screw
to the required setting as indicated on the adjacent
scale. Once the setting is achieved, tighten locknut
(anticlockwise).
Adjustment of the second stage air damper position is
carried out by setting the air damper indicator.
3. Slightly loosen locknut (clockwise) and adjust by turning
screw till the required setting is shown level with the
locknut. Once the setting is achieved, tighten locknut
(anticlockwise) (may require re-adjust when the nut is
locked down).
Head pressure is achieved by adjusting a screw which
moves a regulating rod. A test point on the burner casting
allows reading the air pressure in the combustion head.
4. Rotate the setting screw in a clockwise or anticlockwise
direction until set point marked on the regulating rod is
level with the outside plane of the head assembly.
5a.
CPx 30 - CPx 175 ONLY
High Fire pump pressure is adjusted by rotating the high
fire adjustment screw clockwise (+ positive), anticlockwise
(- negative).
Low Fire pump pressure is adjusted by rotating the low
fire adjustment screw clockwise (+ positive), anticlockwise
(- negative).
Correct operational start-up
0s
Start of heat demand.
Burner begins the ignition cycle.
0s-12s
Pre-purge with opened air damper
12s
Ignition 1st stage.
15s-40s
Ignition 2nd stage.
