Introduction, Instant Domestic Hot Water

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30° 40° 50° 60° 70°	80°	OFF
30° 40° 50° 60° 70°	80°

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2.0Introduction

2.1Introduction

1.Your Baxi Combi Instant 105e is a gas fired, room sealed, powered flue combination boiler, providing central heating for your home and mains fed domestic hot water to taps and shower. It is fully automatic and does not have a pilot light.

2.Priority is given to the hot water mode - when a hot water tap is turned on the supply of heat to the central heating circuit is interrupted.

2.2Instant Domestic Hot Water

1.The boiler expansion vessel incorporates a small volume of stored primary hot water.

2.When the boiler has been off and there is then a demand for domestic hot water the stored primary hot water ensures that domestic hot water is supplied instantly at temperature.

	1	2	3			4	5
Fig. 3	6	7	8	9	10	11
Fig. 3

30° 40° 50° 60° 70° 80°

12 13 14 15

3.The stored hot water is part of the primary circuit. This is not supplied as domestic hot water, which is fresh mains water heated by a heat exchanger within the boiler.

4.The stored primary hot water temperature is maintained whilst the boiler is in operation. During a period when there is no demand for heating or hot water the temperature of the stored primary hot water will eventually fall. The boiler will operate occasionally in order to maintain the temperature. This is indicated by the domestic hot water mode neon flashing (item 13 of Fig. 3).

2.3Facia Panel

1. The facia panel is behind the hinged lower door.

As well as the on/off/reset selector switch, central

heating temperature control knob, pre-heat control

and pressure gauge, the facia incorporates ten

neon indicator lights.

KEY TO FACIA PANEL (Fig. 3)

1.On/Off/Reset Selector Switch

2.Central Heating Temperature Control

3.Pre-Heat Control

4.Central Heating System Pressure Gauge

5.Optional Integral Timer Position

Neon Indicators

6.Flame Failure

7.Safety Thermostat Activated

8.Fault on Fan or Flue

9.Fault on Pump or Low System Pressure

10.Fault on Hot Water Sensor

11.Fault on Central Heating Sensor

12.Power On

13.Domestic Hot Water Mode

14.Central Heating Mode

15.Burner On

When neons 6 to 11 are constantly illuminated, they indicate the temperature of the central heating water.

2. Neons 12 to 15 indicate the operational status of

the boiler. Neons 6 to 11 have a dual function,

indicating the temperature of the central heating

water when constantly illuminated. If a fault

develops the appropriate neon will begin to flash.

Refer to Sections 3.3 to 3.7.

105E specifications

The Baxi Potterton 105E is a prominent model in the realm of gas-fired boilers, well-regarded for its reliability and efficiency. Specifically designed for domestic heating and hot water systems, this boiler offers a robust solution for both small and medium-sized homes.

One of the standout features of the Baxi Potterton 105E is its compact design, making it easy to install in a variety of settings, including kitchens and utility rooms. The unit is designed for wall mounting, which helps to save valuable floor space. This feature is particularly beneficial in modern homes where maximizing space is a priority.

Efficiency is a key characteristic of the Baxi Potterton 105E. With a high-efficiency rating of around 78% to 80%, it operates effectively while minimizing fuel consumption. Such efficiency not only contributes to lower energy bills for homeowners but also aligns with environmental sustainability goals. The boiler uses a systematic heat exchanger made from corrosion-resistant materials which aids in optimizing heat transfer and extends the longevity of the unit.

In terms of technology, the Baxi Potterton 105E employs a conventional open-vented system, which is compatible with existing heating infrastructure in many homes. This makes it a suitable choice for those looking to replace older models without needing extensive modifications to their heating systems.

The Baxi Potterton 105E is also equipped with a user-friendly control panel that enables straightforward operation. Homeowners can easily adjust the temperature settings to suit their preference, ensuring optimal comfort year-round.

Safety features are abundant in the design of the Baxi Potterton 105E. It includes a built-in frost protection device that prevents the system from freezing during colder months. This functionality guarantees that the boiler remains operational even in harsher weather conditions, ensuring a consistent supply of hot water and heating.

Overall, the Baxi Potterton 105E offers a blend of reliability, efficiency, and user-friendly features, making it an excellent choice for homeowners seeking a dependable heating solution. Its compact design, high-efficiency operation, compatibility with existing systems, and safety features set it apart in the competitive landscape of domestic boilers. Whether upgrading an old system or installing a new one, the Baxi Potterton 105E represents a sound investment in home comfort.