Modena 25S HE - Central heating boiler FERROLI - Free user manual and instructions
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| Product Type | Central Heating Boiler |
| Brand | Ferroli |
| Model | Modena 25S HE |
| Heat Output (Max) | 25 kW |
| Efficiency | Condensing, up to 93% (seasonal) |
| Mounting Type | Wall-mounted |
| Dimensions (H x W x D) | 700 x 400 x 300 mm |
| Weight | 30 kg |
| Power Supply | 230 V / 50 Hz |
| Gas Type | Natural Gas (NG) / LPG convertible |
| Flue Type | Room-sealed (balanced flue) |
| Functions | Central heating only (system boiler) |
| Control Interface | Digital display with buttons |
| Maintenance Requirements | Annual service by qualified technician |
| Safety Features | Overheat thermostat, pressure relief valve, flame failure device |
| Spare Parts Availability | Authorized Ferroli dealers and online |
| Energy Rating | An estimated seasonal efficiency class: A |
Frequently Asked Questions - Modena 25S HE FERROLI
What does '25S HE' mean?
The '25' indicates a nominal heat output of 25 kW. 'S' stands for system boiler (heating only), and 'HE' means high efficiency (condensing).
Can the Modena 25S HE be used for domestic hot water?
No, it is a system boiler designed solely for central heating. Hot water requires a separate cylinder.
What is the recommended water pressure for the heating system?
The normal operating pressure is between 1.0 and 1.5 bar when cold. Check the pressure gauge and top up if below 0.5 bar.
How do I reset the boiler after a fault?
Press the reset button (usually a circular button with a cross) for 3 seconds. If the fault persists, consult the manual or a technician.
What does error code 'E01' mean?
E01 typically indicates a flame failure. Check gas supply, ignition electrode, and flue for blockages. Contact a service engineer if unresolved.
How often should I service the boiler?
An annual service by a Gas Safe registered engineer is essential for safety and efficiency. It ensures proper combustion and clean heat exchanger.
Can I install the boiler myself?
No. Installation must comply with local regulations and be carried out by a qualified Gas Safe engineer (or equivalent).
What type of flue does the Modena 25S HE use?
It uses a balanced flue (room-sealed) that draws combustion air from outside and exhausts outdoors. Both pipes are concentric.
How do I bleed radiators?
Turn off the boiler, use a radiator key to open the bleed valve slowly until water escapes, then close. Check system pressure afterwards.
What is the warranty period for this boiler?
Ferroli typically offers a 2-year parts and labor warranty from installation date, extendable with authorized dealer. Check your documentation.
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USER MANUAL Modena 25S HE FERROLI
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Product information
Brand : FERROLI
Model : Modena 25S HE
Category : Central heating boiler