Atag iR 15 - Checking the CO

Installation & Servicing instructions ATAG iR-Range
40
15.1 Checking the CO
2
The CO
2
check consists of 2 steps or, if necessary, 3 steps:
Step 1: Check on full load
Step 2: Check on low load
Step 3: Adjustment (if necessary).
Step 1: CO
2
check on full load
The CO
2
setting is preset at the factory on all boilers. A calibrated CO
2
control measurement must be carried
out during commissioning.
- Ensure that the boiler is in operation and that the heat, which it produces, can be discharged.
Set the full load
You can set the full load of the boiler as follows:
- Press both + buttons for 6 seconds (this will only give full CH output);
- Whentheamesymbolappearsinthedisplaypressboth+buttonsagainfor6seconds;
- Thedisplayshowstheowwatertemperature(
appears in the display);
The boiler will switch to maximum power output of the boiler;
- Press 1x the eco- button;
 thedisplayshowsXX%(heatingcapacity)
- Calibrate the CO
2
measuringtool,andtheninserttheuegasprobeofthemeasuringtoolintothe
measuringpointoftheuegaspipe“a”(seeillustration).
- Wait for one minute and then carry out a combustion analysis.
- Check whether the CO
2
values that are listed below correspond to the measured value.
After this check has been done, once more test the CO
2
value at low load (see Step 2 on page 40). If there
are any deviations in the result, then these must be corrected (see Step 3 on page 41).
Measuring point CO
2
Figure 15.1.a
OCO
2
check on full load (Step 1)
Full load Natural gas (G20) Propane (G31)
CO
2
Nominal9,0% Nominal10,3%
Minimum8,6%,maximum9,6% Minimum9,9%,maximum11,0%
Values are valid with closed cover/air box.
6 sec.
-
-
+ +
reset
eco
°C
-
-
+ +
reset
eco
%
a