The Combi Boiler Test Rig (Model WH-CR-Lab) is a laboratory type-testing station for gas-fired combi and wall-hung boilers. Where the production wall-hung boiler test bench is configured for fast final QC on the line, the test rig is configured for certification and R&D: it continuously logs central heating output, domestic hot-water (DHW) performance, combustion conditions, gas tightness and safety cut-off across the full operating range, producing the traceable data set required for EN 297 and EN 15502 type testing.
What the Rig Measures
- Central heating output — heat output at rated and part load, with flow and return temperatures recorded continuously.
- DHW performance — hot-water temperature, response time and stability at various draw-off rates.
- Combustion conditions — flue gas composition, CO/CO₂ and flame stability across the gas-pressure range.
- Gas tightness — pressure-decay leakage test on the gas circuit; see the gas tightness and flame failure standards page.
- Safety protection — cut-off thresholds for pressure, temperature and flame failure devices.
Type Testing vs. Production QC
| Aspect | Test rig (this page) | Production bench |
|---|
| Primary purpose | Certification & R&D type testing | Final QC of every unit |
| Data capture | Continuous logging across the full range | Fixed pass/fail sequence |
| Output | Traceable type-test report | Per-serial-number report |
| Reference | EN 297 / EN 15502 | EN 15502 / GB 25034 |
Integrated Measurement Train
The rig combines a gas meter, water flow meters, temperature and pressure sensors and a flue-gas analyser with a data-acquisition system, so efficiency and performance are calculated from synchronised measurements rather than manual readings. For efficiency-focused work it is used together with the thermal efficiency test system, which provides the heat-input/output and flue-gas analysis modules.
Standards & Documentation
Test methods follow EN 297 and EN 15502 for gas-fired boilers and EN 625 for combi boiler hot-water performance, with GB 25034 available for the Chinese market. The standards and the available document set are listed on our certifications page, and a real laboratory installation is shown in the EU wall-hung boiler lab bench case study.
Why Choose the Wanhe Rig
| What you need | How the rig delivers |
|---|
| EN 297 / EN 15502 type-test data | Pre-configured test items and continuous logging |
| Defensible certification records | Synchronised, traceable, exportable measurements |
| Coverage of heating and DHW | One station for both functions of a combi boiler |
| Custom laboratory layout | Sensors, gas type (LPG/NG) and ranges configured to your models |
For production-line final QC use the wall-hung boiler test bench; for multi-appliance laboratories see the gas appliance test bench. To specify a type-test rig for your boiler models, contact our engineers with your standards and model list.