Intergas HRE 36/40 - Combustion and Gas Type Adjustment

Intergas Heating Ltd 38
10.7 Checking CO
2
setting
The CO
2
setting has been set in the factory and in principle requires no adjustments.
The setting can be checked by measuring the CO
2
percentage in the combustion gases
(X).
In the case of possible disturbance of the adjustment, replacement of the gas valve or
conversion to another gas type the adjustment must be checked and if necessary set as
follows.
1. Switch the appliance off with the (on/off symbol) button .[-] will appear in service
display.
2. Remove appliance front panel.
3. Remove sampling point X to insert suitable flue gas analyzer probe .
4. Switch appliance on with (on/off symbol)button and create a CH demand
Test program H = HIGH SETTING:
5. Select High setting by simultaneously pressing (spanner symbol) and [+] buttons
twice. H appears in service display . (DO NOT TEST with h in service display- press
(spanner symbol) and [+] again.)
6. Allow readings to stabilize and check the CO
2
percentage is as listed in the table
under § 10.8
7. Record the CO
2
percentage.
Test program L = LOW SETTING:
8. Select Low setting by simultaneously pressing (spanner symbol) and [-] once. L
appears in service display.
9. Allow readings to stabilize and check the CO
2
percentage is as listed in the table
under § 10.8
10. Record the CO
2
percentage.
11. Switch off appliance with (on/off symbol) and replace sample point cap X. Replace
front cover.
CAUTION
Check that the Flue sampling point X is gas tight after sampling.
CAUTION
It is not possible to adjust the CO
2
percentage on test program H.
When the CO
2
percentage is not in accordance with the value as
listed in the table under § 10.8
Please contact Intergas Technical Services 01527 888 000.
No adjustment to the CO
2
percentage should be made without
permission from Intergas Technical Services.
CAUTION
Work on gas carrying parts may only be carried out by a qualified
competent person.
A. Cover screw
B. Adjusting screw for low position
03010102
A
B