Potterton Eurocondense Plus Installation Manual page 18

CONTROL CENTRE PROGRAM SEQUENCE
Time Min. [s] Max. [s]
TNB 0,2
TLO 0,2
TNN 0,2
THL1 0,2
THL2 0,2
tv 0
TBRE 0,2
TW1 0,2
TW2 0,2
tvz 0,2
tsa 1,8
tsa1 0,2
tsa2 0,2
ti 0,2
THL2 0,2
tn 0
Table 5 Operating phases of control centre
Code "A 4" Operating state
0 Standby (no heat requirement)
1 Start disable
2 Fan startup
3 Pre-purging time
4 Waiting time
5 Ignition phase
6 Safety time constant
7 Safety time variable
10 Heating operation
11 Hot water mode
12 Parallel operation for heating and hot water
20 Subsequent ventilation with last operating fan speed
21 Subsequent ventilation with pre-purging fan speed
22 Shut down
99 Fault position
18
Reaction at end
21,0 Fault position
51,0 Fault position
51,0 Fault position
51,0 Fault position
51,0 Fault position
51,0 Continuation
51,0 Fault position
10 Fault position
1800,0 Home mode
5,0 Continuation
9,8
9,6 2)
tsa-tsa1
10 Continuation
51,0 Fault position
51,0 Continuation
Designation
Burner shut-off delay
Open air pressure switch
Up to speed = 0
st
1 fan startup time
nd
2 fan startup time
Pre-purging
Deceleration time to ignition load
Wait for internal sequence, speed limitation and
combustion optimization
Wait for "Heat demand" for Start function
Preignition time
Safety time startup
Safety time startup with ignition
Safety time startup without ignition
Interval time mode
nd
2 fan startup time
Subsequent ventilation
Function description
Burner on standby
Self-test for burner start and fan startup
Pre-purging, fan deceleration time to starting load speed
Ignition and start of safety time
Flame formation, ionization current build up
Room heating mode, burner in operation
Hot-water tank charging, burner in operation
Fan continues to run
Fan continues to run
Self-test after controlled shut-down
The current fault code is indicated, see Table 13