Pereko KSP Duo, Operation And Maintenance Manual

Page: 69 / 84

45
ƒ
check whether correct type of boiler/ burner has been selected.
See sec. 21.1
ƒ
open fully fan baffle and/ or return flap
ƒ
clean off ducts supplying air to the furnace
ƒ
change Fuzzy Logic settings in: MENU
→
Service Settings
→
Boiler Settings
→
Burner Settings
→
Fuzzy Logic (accessible to
boiler manufacturers only)
When Fuzzy Logic mode is
active, combustion is too
intensive and the furnace
lowers into retort.
ƒ
increase fuel feeding rate by higher setting of the parameter
Fuel correction in Fuzzy Logic mode. See sec. 7.7
ƒ
check whether too intensive combustion occurs in SUPERVISION
mode. If YES - adjust this mode acc. sec. 11,
ƒ
check whether too intensive combustion is caused by the setting
Cycle order OPERATION - see sec. 37,
ƒ
if the regulator has the option of fuel type selection - make sure
the correct fuel type has been selected (see sec. 7.10),
ƒ
check whether correct type of boiler has been selected. See sec.
21.1.
ƒ change Fuzzy Logic settings in: MENU
→
Service Settings
→
Boiler Settings
→
Burner Settings
→
Fuzzy Logic (accessible
only to boiler manufacturers only)
The temperature is
measured incorrectly
ƒ
Check if there is a good thermal contact between the
temperature sensor and measured surface,
ƒ
Check if sensor wire not goes too closely to network wire,
ƒ
Check if sensor is connected to terminal,
ƒ
Check if sensor is not broken – check with point 11.8
In the DHW=SUMMER
mode, the radiators are hot
and the boiler overheats.
ƒ
increase the setting of the parameter: HUW pump operation
extension time to cool down the boiler. See sec. 39,
ƒ
increase the setting of the parameter: max. HUW temperature to
enable excessive heat discharge to HUW container. See sec. 42,
Note: inform the users of high temperature of hot utility water!
the DHW pump is active
even if the DHW tank has
been filled.
ƒ
Set the parameter HUW pump operation time extension = 0 ,
sec.38
The boiler overheats
despite disabled airflow
ƒ
the reason may be boiler defect or improper chimney design -
lack of protection against too excessive flue draught.
In hydraulic system with
mixing valve and servo -
mixer is closed
ƒ
The reason may be response of return protection function - see
sec.37. If the return protection function is active, i.e. Return
Protection 4D = ON - check whether the sensor of water return
to the boiler is thermally isolated from environment and apply
thermal paste to improve thermal contact between the sensor
and the pipe. Increase preset boiler temperature to have enough
power to heat return water. Check whether hydraulic system is
properly made - upon valve closing, return temperature should
increase to above the value set in the parameter "Min.return
temperature
” + “ Return temp. hyst ”.
ƒ
the reason may be filling HUW container at active HUW priority.
Wait until completed HUW container filling or deactivate HUW
priority,
ƒ
the reason may be active SUMMER function,
In hydraulic system with
mixing valve and servo
–
preset boiler/mixer
temperature is not stable -
servo performs unnecessary
movements
ƒ
Adjust the parameters: Mixer input dead zone or Proportional
range or Integr. time const.