Appliance Operation

Central Heating Circuit

18 24 22

3 4

	3.0	Appliance Operation


3.1		Central Heating Mode (Fig. 2)
1. With a demand for heating, the pump circulates water
through the primary circuit.
2. Once main burner ignites the fan speed controls the gas
rate to maintain the heating temperature measured by the
temperature sensor.
3. When the flow temperature exceeds the setting
temperature, a 3 minute delay occurs before the burner
relights automatically (anti-cycling). The pump continues to
run during this period.
4. When the demand is satisfied the burner is extinguished
and the pump continues to run for a period of 3 minutes
(Pump Overrun).

3.2	Domestic Hot Water Mode (Fig. 3)

1. Priority is given to the domestic hot water supply. A

demand at a tap or shower will override any central heating

Fig. 2

15 14 13 12

requirement.

2. The flow of water will operate the Hall Effect Sensor

which requests the 3 way valve to change position. This will

Key

1	Primary Heat Exchanger	15 Domestic Hot Water Outlet
2	Burner
		16	Heating Flow
3	Ignition Electrodes
		17	Pressure Gauge
4	Flame Sensing Electrode
		18	Water Pressure Sensor
5	Gas Valve
		20	Fan
6	Pump
		21	Diverter Valve Assembly
7	Automatic Air Vent
		22	Diverter Valve Motor
8	Plate Heat Exchanger/Automatic By-pass
		23 Domestic Hot Water Flow Temperature Sensor
9	Flow Sensor with Filter & Regulator
		24	Safety Thermostat
10	Pressure Relief Valve
		25 Central Heating Temperature Sensor
11	Boiler Drain Point
		26	Expansion Vessel
12	Heating Return
		27 Heat Exchanger Air Vent
13	Cold Water Inlet On/Off Valve and Filter

14	Gas Inlet

allow the pump to circulate the primary water through the

DHW plate heat exchanger.

3. The burner will light automatically and the temperature of

the domestic hot water is controlled by the temperature

sensor.

4. When the domestic hot water demand ceases the burner

will extinguish and the diverter valve will remain in the

domestic hot water mode, unless there is a demand for

central heating.

IMPORTANT: When the selector switch is in the ‘0’ (Off) position the electrical supply to the boiler is isolated. The boiler will not operate and the integral timer will

Domestic Hot Water Circuit

		26	3	4
		26
		20	5
			5
		25
18		24
18
		22		9
				9
	21		23
	21

require resetting once the selector switch is set to either Position (i) or Position (ii).

3.3Frost Protection Mode

1.The frost protection mode is integral to the appliance and functions only with the selector switch (see Section 2.1) in the domestic hot water and central heating position. If the system temperature falls below 5° C then the boiler will fire on its minimum setting until a flow temperature of 30° C is reached. Further protection can be incorporated by using a system frost thermostat.

3.4Pump Protection

1.With the selector switch (see Section 2.1) in either the central heating or central heating and domestic hot water position, the pump will automatically operate for 1 minute in every 24 hours to prevent sticking.

Fig. 3

G.C.No 47 393 22, G.C.No 47 393 23, G.C.No 47 393 21 specifications

The Baxi Potterton range, specifically the models identified by G.C. No 47 393 21, G.C. No 47 393 23, and G.C. No 47 393 22, represents a robust selection of domestic heating solutions that cater to diverse consumer needs. Known for their reliability and efficiency, these boilers are designed with advanced technologies that ensure consistent performance and high levels of user satisfaction.

One of the primary features of these models is their compact design, allowing for flexibility in installation within various home environments. Whether placed in a kitchen, utility room, or cupboard, the space-saving configurations make them ideal for homeowners with limited installation areas.

These boilers utilize a high-efficiency heat exchanger that maximizes heating output while minimizing fuel consumption. This not only results in lower energy bills for consumers but also contributes positively towards reducing carbon footprints. The G.C. No 47 393 21, 47 393 22, and 47 393 23 models are known for their impressive Seasonal Efficiency Ratings, indicating superior energy efficiency, which is vital for compliance with modern building regulations.

In terms of technology, these models feature user-friendly digital displays that provide real-time information on system performance, making it easier for users to monitor and manage their home's heating needs. Additionally, some models come equipped with advanced control systems that allow homeowners to adjust settings remotely via smartphone applications, further enhancing convenience.

Safety is paramount in the design of Baxi Potterton boilers. Each unit is equipped with multiple safety features including built-in frost protection, pressure relief valves, and gas leak detection systems. This commitment to safety ensures peace of mind for users, knowing that their heating system is designed to operate securely.

Another significant characteristic of these models is their compatibility with renewable energy sources. They can work in conjunction with solar thermal systems and can be integrated into larger renewable setups, promoting sustainability in home heating.

In summary, the Baxi Potterton G.C. No 47 393 21, G.C. No 47 393 23, and G.C. No 47 393 22 models are a testament to modern engineering and design. With their emphasis on efficiency, safety, and convenience, they provide exceptional heating solutions for today's energy-conscious homeowners.

Baxi Potterton G.C.No 47 393 23 manual Appliance Operation, Frost Protection Mode, Pump Protection

Models: G.C.No 47 393 22 G.C.No 47 393 23 G.C.No 47 393 21