Baxi Potterton WH65, WH46 manual Control and Operation Devices

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17. CONTROL AND OPERATION DEVICES

The boiler has been designed in full compliance with European reference standards and in particular is equip- ped with the following

• Overheat thermostat

This thermostat interrupts the gas flow to the main burner in case the water contained in the circuit has ove- rheated. Under these conditions the boiler locks out and can only repeat the ignition procedure by pressing of the reset button on the boiler after the cause of the trip has been rectified.

It is forbidden to disable this safety device

•Boiler circuit circulation test

The boiler electronic management unit is fitted with a “boiler circulation test” function which involves con- tinuously checking the primary circuit delivery and return temperatures. In case of an irregular increase in the delivery and return temperature or a temperature reversal, the boiler stops and signals the error on the display (see error table).

•Flue thermostat

This device, positioned on the flue inside the boiler, interrupts the flow of gas to the burner if the temperature exceeds 90 °C. After verifying the cause of the trip, press the reset button positioned on the thermostat itself, then press the reset button on the boiler.

It is forbidden to disable this safety device

•Flame ionization detector

The flame sensing electrode guarantees safety of operation in case of gas failure or incomplete interlighting of the main burner.

Under such conditions the boiler is locked out.

You must press the reset button on the boiler to restore the normal operating conditions.

•Supplementary pump overrun

After the burner has switched off due to a room thermostat intervention the preset pump overrun of the pump lasts 10 minutes, when the boiler is in the central heating mode.

•Frost protection device

The boilers electronic management includes a “frost protection” function in the central heating system which operates the burner to reach a heating flow temperature of 30°C when the system heating flow temperature drops below 5 °C.

This function is enabled as long as the boiler is connected to the a.c. power supply gas supplies and the pressure in the system is as specified.

•Pump-blocking prevention

In case there is no call for heat either from the central heating system or from the DHW system for 24 hours on end the pump will automatically switch on for 10 seconds.

•Gas pressure switch

This device enables the main burner only to be switched on if the gas pressure is over 12 mbar.

•Hydraulic pressure sensor

This device enables the main burner only to be switched on if the system pressure is over 0.5 bar.

INSTRUCTIONS PERTAINING TO THE INSTALLER

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926.772.1 - GB/IE

 

 

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Contents INSTALLATION, Operation and Maintenance Manual WALL-MOUNTED Condensing BoilersContents Instructions Prior to Installation Instructions Prior to CommissioningCommissioning of the Boiler KeysCentral heating mode operating key Description of KeysSetting the Maximum Central Heating Temperature Setting the Maximum HOT Water TemperatureSetting the daily times for central heating mode operation Setting the Minimum Central Heating TemperatureFault Warnings and Resetting the Boiler Table for USER-SETTABLE ParametersFault Warnings Table E110Filling the Boiler Turning OFF the BoilerServicing Instructions and GAS Change General Information Hot water circuitHeating circuit New system Boiler Installation Existing systemInstallation of Flue and AIR Ducts Boiler SizeConcentric flue Horizontal Concentric FluesHorizontal Flue Terminal Ø 80/125 Installation Options Vertical Flue Terminal Ø 80/125 mm Installation OptionsHydraulic Diagram Hydraulic SystemPCB AGU Heat Exchanger Pressure Drop Connecting the Mains Supply Connecting the Pumps AC 50 Hz 1 a max cos φConnecting the HOT Water Tank Sensor Description of the Electrical Connections to the Boiler CLIP-IN AGUConnecting the QAA73 Temperature Regulator Fault messagesConnecting the Outdoor Temperature Sensor Without QAA73 room temperature regulatorWith QAA73 room temperature regulator With AGU2.500 for control of a low temperature systemGAS Valve Adjustment PCI MJ/Kg NET 34.02 Setting the Boiler Parameters H91Control and Operation Devices Check of Combustion Parameters Annual Service Activating the CHIMNEY-SWEEP FunctionBoiler Schematic Illustrated Wiring Diagram Technical Data Boiler model WH CategoryTelephone

WH46, WH65 specifications

The Baxi Potterton WH65 and WH46 are renowned for their efficiency and reliability, designed to meet a variety of heating requirements in residential and commercial settings. These models exemplify advanced engineering, ensuring that users benefit from optimal performance and reduced energy consumption.

One of the main features of these units is their exceptional heat output. The WH65 boasts a powerful output of 65 kW, making it suitable for larger properties or commercial spaces with high heating demands. Conversely, the WH46 provides a more moderate output of 46 kW, ideal for smaller applications. Both models are built to provide consistent heating, contributing to a comfortable environment regardless of external weather conditions.

Technologically, the Baxi Potterton WH series utilizes a robust cast iron heat exchanger, renowned for its durability and long lifespan. This feature not only enhances the unit’s efficiency but also aids in better heat retention, allowing the boiler to operate at optimal levels for extended periods. The heat exchanger is complemented by an intelligent control system, which allows for easy adjustments to settings, ensuring that the heating output can be modified to suit specific needs.

Another important characteristic of the WH65 and WH46 is their user-friendly interface. Both models are equipped with clear and intuitive controls, making it easy for homeowners and technicians alike to operate and maintain the units. For added convenience, these boilers can be integrated with external controls, enabling smart temperature management and energy saving.

The efficiency ratings of the WH65 and WH46 models are commendable, allowing for lower energy bills and a reduced carbon footprint. These boilers comply with stringent environmental standards, contributing to eco-friendliness without compromising performance.

In terms of installation, both models are designed with flexibility in mind. They can be installed in various positions, adapting to space constraints or specific installation requirements. Furthermore, the boilers are relatively lightweight for their category, making them easier to handle during the installation process.

In conclusion, the Baxi Potterton WH65 and WH46 are exemplary heating solutions that combine power, efficiency, and user-friendly features. They cater to diverse heating needs while ensuring durability and compliance with modern energy standards, making them a popular choice among consumers and heating professionals alike.
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