Operating The Boiler; Temperature Control; Domestic Hot Water - Baxi Combi 133 HE Plus User Operating Instructions Manual

Summer/Winter
Button

Domestic Hot Water

Light - Green
Flame Failure
Light - Red
Burner ON
Light - Green
Mains ON
Light - Green
Fig. 2
4
High
Low
ON
High
Low

2.0 Operating the Boiler

2.1
Central Heating
The boiler will automatically achieve the optimum flow
temperature for maximum comfort and efficiency.
1. However, in the case of the elderly, infirm or very young,
a lower radiator surface temperature may be desirable. If
so, the central heating flow temperature can be adjusted
between approx 55 °C minimum and approx 82 °C
maximum by turning the Central Heating Maximum
Radiator Temperature Control Knob (Fig. 2).
2. The boiler will light automatically on demand and the
Green 'Burner ON' light will be lit whilst water is being
heated (Fig. 2).
3. Priority is given to domestic hot water. The boiler
control system has an automatic time delay built in for
central heating. It is normal that following a shutdown by
the boiler thermostat, timer or other heating control, there
is a delay of around 3 minutes, before re-lighting.
Domestic Hot Water
The boiler will automatically achieve the optimum flow
temperature for maximum comfort and efficiency.
1. The temperature of the domestic hot water can be
adjusted between approx 45 °C minimum and approx
55 °C maximum by turning the Domestic Hot Water
Temperature Control Knob (Fig. 2).
Domestic Hot Water
2. The boiler will light automatically on demand. The Green

Temperature Control

'Domestic Hot Water ON' light will be lit from the tap
being opened until the tap is shut and water has been
heated to the set temperature. The Green 'Burner ON'
light will be lit whilst water is being heated. (Fig. 2).
Intelligent Pre-Heat: The boiler incorporates an intelligent
Reset
pre-heat feature. This ensures that the domestic hot water
Button
to the tap is pre-heated only when the user required hot
water the previous week. The pre-heat switches the boiler
Reset
on for approximately 1 minute every 40 minutes when
required. During the first week of operation from power
on, no pre-heating will occur.
Summer/Winter Button
Summer setting (Button Out) - hot water will be provided
when a tap or shower is turned on. Central heating will be
off even if the Timer or other control is set to On.
Central Heating
Winter setting (Button In) - central heating will operate on
Maximum Radiator
demand or the hot water will be provided when a tap or
Temperature Control
shower is turned on (Fig. 2).
Temperature Control