Dear Customer, are disabled. The antifreeze system remains activated. To relight the boiler, press the FERcondens 25 HE is a high-efficiency sealed chamber condensing heat generator for on/off button (detail 7 fig. 1) again for 5 seconds. heating and hot water production running on natural gas or LPG, and equipped with a microprocessor control system.
FERcondens 25 HE Room temperature adjustment (with optional room thermostat) Incorrect installation can cause damage or injury for which the manufacturer declines any responsibility. Using the room thermostat, set the temperature required in the rooms. If the room ther- mostat is not installed, the boiler will keep the system at the set system delivery setpoint Installation of this unit must be carried out in strict compliance with the present temperature.
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WRAS. The fitting of a DHW expansion vessel is also recommend- Heating Flow Water treatment For water treatment is necessary, Ferroli recommends the exclusive use of specific prod- DHW Outlet ucts such as Fernox or Sentinel to be applied according to the producer's instructions.
FERcondens 25 HE 3.4 Gas connection Connection with coaxial pipes The gas must be connected to the relevant union in conformity with the current regulations, with a rigid Standard coaxial installation metal pipe or with a continuous surface flexible s/steel tube, installing a gas cock between the system...
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FERcondens 25 HE Table. 3 - Baffles for coaxial ducts Table. 6 - Accessories Coaxial 60/100 Coaxial 80/125 Losses in m Max. permissible length 12 m Flue exhaust Reduction factor 90° bend 0.5 m inlet Vertical Horizontal Reduction factor 45° bend 0.5 m...
TEST mode activation To connect the FERcondens 25 HE boiler to a multiple flue or a single flue with natural Press the heating buttons (details 3 and 4 - fig. 1) together for 5 seconds to activate the TEST mode.
FERcondens 25 HE 4.2 Startup List of faults Before lighting the boiler Table. 7 • Check the seal of the gas system. • Check correct prefilling of the expansion tank. Fault Fault Possible cause Cure • Fill the water system and make sure all air contained in the boiler and the system code has been vented.
FERcondens 25 HE 5. TECHNICAL DATA AND CHARACTERISTICS 5.2 Water circuit Table. 8 - Key of figure cap. 5 5 Sealed chamber 36 Automatic air vent 7 Gas inlet 38 Flowswitch 8 Domestic hot water outlet 42 DHW temperature sensor...
FERcondens 25 HE 5.3 Technical data table 5.4 Diagrams Pressure - power diagrams FERcondens 25 HE mbar Data Unit FERcondens 25 HE Max. heating capacity 25.0 Min. heating capacity 10.0 Max. Heat Output in heating (80/60°C) 24.4 Min. Heat Output in heating (80/60°C) Max.
GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. CONTROLS Optimum start control Fitted...
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SERVICE RECORD It is that your heating system is serviced and that the appropriate Service Interval Record is completed. Service Provider SERVICE 01 SERVICE 02 ² % ² % ² % ² % SERVICE 03 SERVICE 04 ² % ² % ²...
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Before contacting Fer please have available the completed BENCHMARK document (located in the back of this manual), boiler serial number and model detail. For Technical assistance during the installation, call our Technical Helpline on 0843 479 0479. You will be required to provide your Gas Safe Register Number. Should you require a Service Engineer to visit, call our Service Centre on 0843 479 0479.
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