| Temperature Measurement |
| Flue Temperature Range | 32° to 1112°F (0° to 600°C) |
| Flue Temperature Resolution | 1°F/C |
| Flue Temperature Accuracy | +3.6°F +0.3% rdg |
| Inlet Temperature (Internal Sensor) Accuracy | +1.8°C +0.3% rdg |
| Inlet Temperature (External Sensor) Accuracy | +3.6°F +0.3% rdg |
| Flue Gas Measurement |
| Oxygen Range | 0 to 21% |
| Oxygen Resolution | 0.1% |
| Oxygen Accuracy | +0.3% |
| Carbon Monoxide Range | 100 to 400ppm, 400 to 2,000ppm, 2,000 to 9,999ppm, Above 10,000ppm purge pump operates |
| Carbon Monoxide Resolution | 1ppm |
| Carbon Monoxide Accuracy | ±5ppm, ±20ppm, ±5%, ±10%, Unspecified |
| Carbon Dioxide Range | 0 to 20% |
| Carbon Dioxide Resolution | 0.1% |
| Carbon Dioxide Accuracy | ±0.3% volume |
| Efficiency (Net or Gross) Range, Resolution, Accuracy | 0 to 20%, 0.1%, +1.0% rdg |
| Efficiency High (C) Range, Resolution, Accuracy | 0 to 99.9%, 0.1%, +1.0% rdg |
| Excess Air Range, Resolution, Accuracy | 0 to 250%, 0.1%, +0.2% rdg |
| CO/CO2 ratio Range, Resolution, Accuracy | 0 to 0.999%, 0.0001, +5% rdg |
| Pre-Programmed Fuels | Natural Gas, Propane, Butane, LPG, Light Oils (28/35sec), Wood Pellets, Town Gas, Coke Gas, Bio Oil, Bio Gas |
| Certification | The C165+ is independently tested and certified to EN 50379, Parts 1-3 in accordance to 1st German Federal Emission Control Ordinance (BlmSchV) |
| CE Conformity | Yes |
| RoHS | EC62321-2:2013, IEC62321-1:2013, IEC62321-3-1:2013, IEC62321-5:2013, IEC62321-4:2013, IEC62321-7-2:2017, IEC62321-7-1:2015, IEC62321-6:2015 |
| REACH Compliant | Yes |
| AHRI 1260 Standard | Yes |
| Certification | The C161 is independently tested and certified to EN 50379, Parts 1-3 in accordance to 1st German Federal Emission Control Ordinance (BlmSchV) |
| EMC | EN50270:2015 |
| Safety | EN61010-1:2010 |
