Operating instructions

1.0 Operating the Boiler
3
1.1 Operating the Boiler
The Central Heating and Hot Water you need will be
available when the gas and electricity supplies to the boiler
are turned on with the timer and other heating controls in
your system set correctly.
Other heating controls are items such as room
thermostats, cylinder thermostats and thermostatic
radiator valves. To give the most energy efficient
performance these controls can switch your boiler
on and off even when your timer is on. Instructions
on how to use your programmer and other
heating controls should have been supplied with
the items. Baxi Heating UK Limited also produce a
guide ‘How to get the best out of your NEW
Central Heating System’. Telephone our Literature
Hotline on 08706 060 623 to request your free
copy.
1. Ensure that the electricity and gas supplies are turned on.
Check that the central heating pressure is at least 0.5 bar
(Fig. 1).
2. Turn the On/Off/Reset selector switch either anti-
clockwise from the OFF position (Fig. 3) to both central
heating and domestic hot water or clockwise to domestic
hot water only.
3. In either position the display will illuminate showing the
current boiler temperature in degrees centigrade (Fig. 2).
4. Position (i) Heating and Hot Water (Fig. 4) In this
position the central heating will operate on demand from
the integral timer, room thermostat etc or domestic hot
water will be provided when a tap or shower is turned on.
Priority is given to domestic hot water. The central heating
indicator ( ) will illuminate when the boiler is supplying
central heating. If there is a demand for domestic hot water
the ( ) indicator will illuminate and the central heating
indicator ( ) will extinguish (Fig. 2). As the temperature
rises the display will change, showing the current boiler
output temperature.
5. Position (ii) Hot Water Only (Fig. 5) In this position only
hot water will be provided when a tap or shower is turned
on - Central Heating will not operate. The hot water
indicator ( ) will illuminate (Fig. 2).
6. The boiler will light automatically on demand.
7. The burner on indicator ( ) will illuminate when the
boiler is operating and the main burner has lit (Fig. 2).
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 require resetting once the selector switch is
set to either Position (i) or Position (ii).
2
1
0
4
3
bar
R
1
2
3
4
5
P
M
7
8
9
10
11
12
1
2
3
4
5
AM
7
8
9
10
11
12
GRASSLIN
0
Position (ii)
(Hot Water)
Fig. 4
Fig. 5
OFF Position
Fig. 3
Fig. 1
2
1
0
4
3
bar
Central Heating System
Pressure Gauge
Position (i)
(Central Heating or Hot Water)
On/Off/Reset
Selector Switch
Fig. 2
Central Heating
Temperature Control
Domestic Hot Water
Temperature Control
Central Heating
Indicator
Domestic Hot
Water Indicator
Burner On
Indicator
Current Boiler
Output
Temperature
Display
Timer