Starting the water heater
58
Instruction manual BFC
9
gis
When the water heater starts, it will run through the
following steps:
1. The water temperature drops below the set
temperature of (for example)
65
°C. The controller
detects a heat demand and starts the operating
cycle.
-
The icon is activated.
-
The message
HEAT DEMAND
appears.
2. Once demand is registered, the fan is started to
vent any gases that may be present. This phase is
called pre-purge and lasts about 15 seconds.
-
The icon is activated.
-
The message
PRE PURGE
appears.
3. During the pre-purge, the pressure switch closes.
-
The icon is activated.
-
The message
PRESSURE SWITCH
appears.
4. This is then followed by the (pre-)glow of the hot
surface igniter.
-
The icons and are dimmed
-
The icon is activated.
5. After a number of seconds pre-glow, the gas
control valve is opened and ignition takes place.
-
The icon is activated.
-
The message
IGNITION
appears.
6. After ignition, the flame is detected and the
appliance will be running. This means that actual
heating has started:
-
The icon is dimmed.
-
The icon is activated.
-
The message
RUNNING
appears.
7. When the water is up to temperature, the heat
demand ceases and the post-purge starts. This
takes about 25 seconds.
-
The icons , and are dimmed.
-
The icon is activated.
-
The message
POST PURGE
appears.
8. Following the post-purge, the fan stops and the
pressure switch opens:
-
The icons and are dimmed.
-
The message
POST PURGE
vanishes.
With any subsequent heat demand, the heating cycle
will resume from step 1.
ON
Ê
13:45 Thursday
63ÉC
Tset 65ÉC
HEAT DEMAND
ON
Ê Ê
13:45 Thursday
63ÉC
Tset 65ÉC
PRE PURGE
ON
Ê Ê Ê
13:45 Thursday
63ÉC
Tset 65ÉC
PRESSURE SWITCH
ON
Ê
Ê
13:45 Thursday
63ÉC
Tset 65ÉC
GLOW PLUG
a
a
a
a
ON
Ê
Ê Ê
13:45 Thursday
63ÉC
Tset 65ÉC
IGNITION
ON
Ê
Ê
Ê
13:45 Thursday
63ÉC
Tset 65ÉC
RUNNING
ON
Ê Ê
13:45:00
Thursday
65ÉC
Tset 65ÉC
POST PURGE
ON
14:05 Thursday
65ÉC
a
a
a
a
Содержание 120 through 250 Series
Страница 4: ...E2 ...
Страница 6: ...4 Instruction manual BFC gis ...
Страница 10: ...Contents 8 Instruction manual BFC ...
Страница 31: ...Instruction manual BFC 29 is Installation types IMD 0789 R0 C43 C13 C53 B23 C33 ...
Страница 48: ...Conversion to a different gas category 46 Instruction manual BFC 4 is ...
Страница 58: ...Status of the water heater 56 Instruction manual BFC 8 gis ...
Страница 62: ...Shutting down 60 Instruction manual BFC 10 gis ...
Страница 74: ...Service program 72 Instruction manual BFC 12 is ...
Страница 88: ...Service interval 86 Instruction manual BFC 14 is ...
Страница 97: ...Instruction manual BFC 95 is ...
Страница 100: ...Appendices 98 Instruction manual BFC 17 is 17 4 Declaration of conformity Declaration of conformity ...
Страница 102: ...Instruction manual BFC 100 ...