Potterton Eurocondense Plus Installation Manual page 37

EXPLANATIONS ON ADJUSTEMENT TABLE FOR HEATING ENGINEERS
542 (PminHuwKw)
Min. boiler input in kW
543 (PmaxHuwKw)
Max. boiler input in kW
Tab. 8 Boiler input in heating mode
Model
EUROCONDENSE PLUS
Prog.-Nr. 536 (NhzMax)
Prog.-Nr. 541 (PhzMax)
Prog.-Nr. 542 (PminHuKw)
Prog.-Nr. 543 (PmaxHuKw)
545 (ZBreMinP)
Minimum pause time for burner
547 (ZReglVerz)
Delay after burner startup
551 (Kon)
Constant for rapid reduction
(without room influence)
552 (HydrSystem)
Hydraulic system setting
Differ depending on type of boiler: see table 8
Differ depending on type of boiler: see table 8
90
U/min 4600
% 70
kW 32,0
kW 90,0
Programs No. 542 and 543 serve only for indication of the specific boiler
output (no function) and balancing the output when the cascade controller
EUROCONTROL BCA 2 is used!
The EUROCONDENSE PLUS is provided with a minimum pause time or
startup disable of 3 min. to reduce the number of burner startups.
The controller delay time after burner startup is set to 60 sec. This should
not be readjusted to ensure reliable burner operation!
During this time, the EUROCONDENSE PLUS is operated at the boiler
output set in program No. 598 (LmodRgVerz) (Fig. 9).
This function switches off the heating circuit pump when the system is
switched over to a lower room temperature setting (e.g. night setback
reduction). This function is provided for systems operated with outdoor
temperature sensor or without room control module.
The switch-off time for the heating circuit pump is set as specified in Table
9 by entering a constant (Kon).
The heating circuit pump is switched off for a maximum of 15 hours.
At outdoor temperatures below –5 °C, the pump is not switched off.
Note: Low "constant" for "lightweight" buildings which cool down quickly
High "constant" for "heavy", well-insulated buildings.
Table 9 Switch off times
Mixed outdoor Pump switch-off times in hours (h) for program No. 551 (Kon) =
temperature Kon=0
-20°C 0
-10°C 0
0°C 0
+10 0
The hydraulic system is set to "2" at the factory; i.e. the
EUROCONDENSE PLUS can be used for the max: possible number of
hydraulic systems. However, in order to ensure optimum heating
operation for application examples 1 through 8 (without unnecessary
increases in boiler temperature), program No. 552 should be set
accordingly:
120 160
4950 4700
86 65
42,0 56,0
120,0 160,0
Kon=4 Kon=8
0 0
0,5 ~ 1h
~ 3h ~ 6h
~ 5h ~ 11h
200 250
5100 6000
71 100
70,0 87,5
200,0 250,0
Kon=12 Kon=15
0 0
~ 1,5h ~ 2h
~ 9h ~ 11h
~ 15h ~ 15h
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