Intergas HRE 36/40 - Setting Gas;Air Adjustment Procedure

Intergas Heating Ltd 39
10.8 Setting gas/air adjustment procedure
1. Switch the appliance off with the on/off key ( - on service display).
2. Remove the front panel from the appliance.
3. Unscrew the CO
2
measuring nipple (X) and connect the measuring hose.
4. Switch the appliance on with the on/off key.
High setting:
5. Adjust the appliance to the highest power by simultaneously pressing the keys and
on the operating panel until an H appears on the display.
6. Check if the CO
2
percentage is in accordance with the value mentioned in the table below.
CAUTION
It is not possible to adjust the CO
2
percentage at high setting.
When the CO
2
percentage at high setting is not within the
prescribed tolerance band please contact Intergas Heating.
7. Note the measured CO
2
percentage.
Low setting:
8 Adjust the appliance to the lowest power by simultaneously pressing the keys and
on the operating panel until an L appears on the display.
9 Measure the CO
2
percentage.. If the CO
2
percentage. does not correspond with the value
in the table below proceed with setting as follows:
10 Remove the cover cap (A).
11 Adjust the set screw (B) to the correct CO
2
value (clockwise higher and anti-
clockwise lower).
12 After measurement and setting replace the cover cap (A) and close the CO
2
measurement
nipple.
13 Adjust the appliance to the maximum power by simultaneously pressing the keys and
(2 x) on the operating panel until an H appears on the display.
14 Measure the CO
2
percentage.. If the CO
2
percentage. does not correspond with the value
in the table below please contact the manufacturer.
15 Press simultaneously on the and keys to leave the test program.
16 Fit the front panel to the appliance.
Note
Check that the measurement nipples used are gas-tight.
Gas type Natural gas H Propane
P
Gas category 2H
G20
20mBar
3P G31(propane)
37mBar
CO
2
% at high setting(H) ( and 2x)
With opened casing. N.B. Not adjustable
9.1 ± 0.5 10.3 ± 0.5
CO
2
% at low setting (L) ( and )
With front cover removed
Equal to or max. 0,3 % lower than the value
at high setting.
Absolute min. value is 8,6 %
Min. 0,3 and max. 0,6 lower than the value at
high setting.
Absolute min. value is 9,3 %
Gas supply pressure (mBar) 20-30 25-35
Gas restriction ring (HRE 24/18) 620 505
Gas restriction ring (HRE 28/24 and 36/30) 695 550
Gas restriction ring (HRE 36/40) 655 525
Minimum rpm (% of max) (parameter c and d) 30 40
Min. start rpm (% of max) (parameter F and F . ) 70 50
CAUTION
Check that the Flue gas sampling point and the Gas test
point are gas-tight. No adjustment should be made to the
gas valve without prior permission of Intergas Technical
Services.