14.3 DESCRIPTION OF THE ELECTRICAL CONNECTIONS TO THE BOILER

Turn the control box downward to access terminal board M2 used for the electrical connections by removing the protective cover (see figure 13).

Terminals 1-2:connection of SIEMENS model QAA73 room temperature regulator supplied as optional extra. Connection polarity is irrelevant.

The link fitted across the “TA” terminals 3-4 must be removed.

Read the instructions supplied with this accessory for correct installation and programming procedures. Terminals 3-4:“TA” room temperature thermostat connection. Thermostats with integral accelerator resistor must not be used. Check that there is no voltage across the ends of the two thermostat connection wires. Terminals 5-6:external safety contact (low voltage).

Terminals 7-8:connection of SIEMENS model QAC34 outdoor temperature sensor supplied as optional extra. Read the instructions supplied with this accessory for correct installation procedures.

Terminals 9-10:connection of hot water temperature sensor supplied as optional extra for connecting hea- ting-only boilers to an external water heater.

CLIP-IN AGU 2.511

Terminals 3-4L-N OUT: connection to signal lamp (230 V - 0,5 A max) for lockout alarm.

Terminals 5-6L-N OUT: connection to signal lamp (230 V - 0,5 A max) for run mode.

For low voltage signal lamp remove the internal wiring and feed with an external low voltage power supply.

(OPTIONAL EXTRA)

0602_0708/CG1765

Figure 14

INSTRUCTIONS PERTAINING TO THE INSTALLER

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Baxi Potterton WH46, WH65 manual Description of the Electrical Connections to the Boiler, Clip-In Agu

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.