IP175S - Boiler Rinnai - Free user manual and instructions
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| Product type | Wall-mounted gas condensing boiler |
| Brand | Rinnai |
| Model | IP175S |
| Nominal power (heating) | 24 kW |
| Nominal power (DHW) | 28 kW |
| Dimensions (H x W x D) | 700 x 400 x 300 mm |
| Net weight | 30 kg |
| Gas supply | Natural gas (G20/G25) – propane possible with kit |
| Electrical supply | 230 V / 50 Hz |
| Energy efficiency (GCV) | Up to 93% |
| Energy class | A (for heating and DHW) |
| Flue type | Concentric flue (60/100 mm) |
| Main functions | Central heating and instantaneous domestic hot water production |
| Burner | Modulating (fully modulated) |
| Safety devices | Overheat protection, low water safety, flame safety, integrated by-pass |
| Routine maintenance | Annual cleaning by a certified professional |
| Spare parts | Available through the Rinnai network for at least 10 years |
| Repairability index | 8.2/10 (indicative rating) |
| Warranty | 2 years parts and labor (extendable) |
| NOx emissions | Class 5 (≤ 60 mg/kWh) |
Frequently Asked Questions - IP175S Rinnai
How do I start up my Rinnai IP175S boiler for the first time?
The start-up must be carried out by a certified installer. They will check the gas connection, electrical connection, and flue ducts. Follow the steps in the manual: open the gas valve, power the boiler, purge the air, then turn on via the main switch.
What is the recommended water pressure for the heating circuit?
The cold pressure should be between 1.0 and 1.5 bar. Check the pressure gauge. If the pressure drops below 0.8 bar, add water via the filling valve.
Why does my boiler stop and display an error code?
Error codes are listed in the manual. Common causes include: lack of gas, flue obstruction, overheating, or insufficient pressure. Refer to the code table and contact a professional if the problem persists.
How do I adjust the domestic hot water temperature?
Use the DHW adjustment button on the control panel. The recommended temperature is 50 to 55 °C to avoid burns and reduce limescale. You can adjust in increments of 5 °C.
What annual maintenance is required for the IP175S?
Annual maintenance by a professional is mandatory. It includes: cleaning the burner, checking flues, verifying pressures and temperatures, replacing seals if necessary. Keep the maintenance log.
Can I use propane gas with the IP175S boiler?
Yes, with a specific conversion kit provided by Rinnai. The adaptation must be carried out by a certified installer. The flow rate and nozzle will need to be changed.
How do I bleed the radiators?
Make sure the boiler is off and the circuit is cold. Slightly open the bleed valve on each radiator with a key, starting from the lowest. Close it as soon as water flows without bubbles. Check the pressure afterwards.
What is the typical lifespan of the IP175S boiler?
With regular maintenance, the lifespan is around 15 to 20 years. Wear parts (burner, fan) may need replacement after 10-12 years.
Where can I find spare parts for the IP175S?
Spare parts are available from authorized Rinnai dealers and online on the official website. Always use original parts to ensure safety and compliance.
What should I do if I smell gas?
Immediately shut off the gas supply at the meter, open windows, do not create any flames or sparks. Evacuate the area and call the gas emergency service (in France: 0 800 47 33 33). Do not use the boiler again until a professional has intervened.
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USER MANUAL IP175S Rinnai
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Product information
Brand : Rinnai
Model : IP175S
Category : Boiler