Ultracom 15hxi - Chauffe-eau et chaudière Glow-worm - Free user manual and instructions
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| Product Type | Gas boiler and water heater |
| Brand | Glow-worm |
| Model | Ultracom 15hxi |
| Fuel Type | Natural gas (G20) / LPG (G31) |
| Usage | Central heating and domestic hot water |
| Dimensions (H x W x D) | Approx. 700 x 390 x 280 mm |
| Weight | Approx. 30 kg |
| Electrical Supply | 230 V / 50 Hz |
| Gas Pressure (natural gas) | 20 mbar |
| Heating Output (max) | 15 kW |
| DHW Output (max) | 15 kW |
| Efficiency | Up to 91% |
| Ignition | Electronic spark ignition |
| Ventilation | Room-sealed (balanced flue) |
| Temperature Range (CH) | 30 °C – 80 °C |
| Temperature Range (DHW) | 35 °C – 60 °C |
| Safety Features | Flame failure device, overheat thermostat, frost protection |
| Maintenance | Annual servicing by qualified engineer; clean burner and heat exchanger |
| Spare Parts | Available from Glow-worm or authorized dealers |
| Warranty | 2 years (parts and labor) |
Frequently Asked Questions - Ultracom 15hxi Glow-worm
What type of gas does the Glow-worm Ultracom 15hxi use?
The boiler can run on natural gas (G20) or LPG (G31) with appropriate conversion.
How do I reset the boiler after a fault?
Press the reset button on the control panel after identifying and resolving the fault. Refer to the manual for specific fault codes.
What is the recommended heating output for this boiler?
The maximum heating output is 15 kW, suitable for medium-sized homes with up to 10 radiators.
How often should I service the Ultracom 15hxi?
Annual servicing by a Gas Safe registered engineer is recommended to ensure safe and efficient operation.
What does the frost protection feature do?
The boiler automatically activates the pump and burner when the temperature drops near freezing to prevent pipe damage.
Can I use the boiler without heating for hot water only?
Yes, the boiler has a summer mode that provides domestic hot water without central heating.
What should I do if the boiler pressure is too low?
Use the filling loop to add water until the pressure gauge reads between 1 and 1.5 bar. Check for leaks if pressure drops frequently.
How do I adjust the water temperature?
Use the dials on the control panel: one for heating temperature (30-80°C) and one for hot water temperature (35-60°C).
Where can I find spare parts for this model?
Parts are available from Glow-worm authorized dealers or online spare parts retailers. Quote the model and serial number.
What does the 'flame failure device' do?
It automatically shuts off the gas supply if the flame goes out, preventing gas leaks and ensuring safety.
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