Baxi Potterton 80 HE, 105 HE manual Temperature Control, Flame Failure Reset

Fig. 9

Central Heating

Temperature Control

PREHEAT	PREHEAT
OFF	OFF
ON	ON
Fig. 10	Fig. 11
Domestic Hot Water	Domestic Hot Water
Pre-Heat Control	Pre-Heat Control
ON Position	OFF Position
Flame Failure
Neon

30o 40o 50o 60o 70o 80o

Fig. 12

Domestic Hot

Water Neon

Reset

Reset Position

Fig. 13

3.0Operating the Boiler

3.2Temperature Control

1.Central Heating: The central heating hot water flow temperature can be adjusted between 30° C (± 5° C) minimum and 85° C (± 5° C) maximum.

2.Turn the control knob clockwise to increase the temperature (Fig. 9).

3.In normal winter usage we recommend that the central heating temperature be set at maximum.

4.Domestic Hot Water Pre-Heat: To enjoy optimum performance of the boiler the pre-heat control should be set fully clockwise to the ON position (Fig. 10).

When there is a demand for hot water it will be supplied at approximately 65° C instantaneously.

5.Turning the control 15° clockwise from the OFF position will activate the pre-heat feature. Hot water will be supplied at approximately 35° C instantaneously.

6.To increase the temperature turn the control further clockwise. For example, when set 90° clockwise the boiler will supply hot water at approximately 44° C instantaneously. At a position 180° from clockwise (i.e. straight down) the hot water will be supplied at 52° C instantaneously.

7.When the control is set anywhere between 15° clockwise from the OFF position and the ON position, the pre-heat feature will operate.

8.With the control in the OFF position (Fig. 11) the pre- heat feature will not operate. Hot water will be supplied at approximately 50° C.

9.The pre-heat feature will function with the selector switch in either operating position. This is indicated by the domestic hot water mode neon flashing (Fig. 12).

10.The flow rate can be reduced down to as low as 2.5 litre/min. The boiler will still recognise the need to heat the water.

3.3Flame Failure Reset

1.The red flame failure neon () will illuminate in the event of the burner failing to light, when incomplete

lighting of the burner occurs or blockage of the condensate drain (Fig. 12).

2.Turn the selector switch fully anti-clockwise against the spring pressure to the ‘Reset’ position for at least two seconds and release (Fig. 13). Set the selector to the required position to light the boiler.

3.If the flame failure light illuminates repeatedly a fault is indicated with either the boiler, the gas supply or the condensate drain. Your Installer or Service Engineer should be called as soon as possible.

7