Infinity 12 - Water heater Rinnai - Free user manual and instructions
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| Product Type | Tankless Gas Water Heater |
| Brand | Rinnai |
| Model | Infinity 12 |
| Dimensions (H x W x D) | 575 mm x 350 mm x 220 mm |
| Weight | 14 kg |
| Power Source | Natural Gas or LPG (depending on conversion kit) |
| Gas Consumption | Up to 26.5 kW (90,000 BTU/h) |
| Water Flow Rate | Up to 12 L/min (at 25°C rise) |
| Temperature Range | 37°C - 60°C |
| Ignition | Electronic ignition with battery backup |
| Control Display | Front panel with digital temperature readout |
| Main Features | Endless hot water, continuous flow, energy efficient |
| Maintenance | Annual descaling recommended; clean inlet filter periodically |
| Safety Features | Flame failure safety, overheating protection, anti-freeze function |
| Installation Type | Wall-mounted indoor/outdoor (with appropriate kit) |
| Water Connections | 3/4 inch BSP inlet and outlet |
| Gas Connection | 3/4 inch BSP |
| Flue System | Concentric or twin pipe for room-sealed models |
| Spare Parts | Available: heat exchanger, fan, gas valve, control board, water servo |
| Repairability | Modular design; many parts replaceable by qualified technician |
| Warranty | Typically 5 years on heat exchanger, 2 years on parts |
Frequently Asked Questions - Infinity 12 Rinnai
What type of gas does the Rinnai Infinity 12 use?
The Rinnai Infinity 12 is designed for natural gas but can be converted to LPG using an approved conversion kit. Check the label on the unit for the specific gas type.
How do I set the water temperature on the Infinity 12?
Use the front panel controls to adjust the temperature. Press the + or - buttons to set between 37°C and 60°C. The display shows the current target temperature.
Does the Infinity 12 require a flue?
Yes, it is a room-sealed appliance and requires a flue system (concentric or twin pipe) to exhaust combustion gases outside. Installation must comply with local regulations.
What does error code 10 mean on my Rinnai Infinity 12?
Error code 10 indicates an ignition failure. Check gas supply, ensure gas valve is open, and verify that the burner and flame rod are clean. Reset the unit by turning it off and on.
How often should I descale the water heater?
Rinnai recommends annual descaling using a descaling solution, especially in hard water areas. Follow the procedure in the manual to prevent scale buildup that can reduce efficiency.
Can the Infinity 12 be used with a solar pre-heat system?
Yes, it is compatible with solar pre-heat. The heater will adjust its output based on the inlet water temperature. Ensure inlet temperature does not exceed 60°C.
What is the minimum water flow required to activate the heater?
The minimum activation flow is approximately 3.5 L/min. If flow is too low, the unit may not turn on. Ensure taps and shower heads are fully open.
How do I clean the inlet filter?
Turn off gas and water supplies. Remove the inlet filter (located at the water inlet connection). Rinse under running water, reassemble, and turn supplies back on. Do this every 6 months.
Is the Rinnai Infinity 12 suitable for outdoor installation?
Yes, but it requires an outdoor wall-mounting kit and must be protected from direct rain. The unit is weather-resistant but not waterproof.
What are the dimensions of the Infinity 12?
The unit measures approximately 575 mm high, 350 mm wide, and 220 mm deep. Allow clearance of at least 300 mm above and below for service access.
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