oventrop Regudis W, Паспорт установки

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7 Fault finding
In case of malfunctions, the following should be
checked
before starting the detailed fault finding:
• The system is connected correctly
• The supply temperature is adequate (at least
60 °C)
• The system has been bled
• The strainers are clean
• The system design/ system dimensioning is
correct
• The central pump is sized and set correctly
(∆p- constant)
• The power supply of the system is working (the
installed actuators or the pump in the station
with variable temperature circuit are connected
correctly)
Insufficient potable water temperature
• Dirt in the system/ strainers blocked
䡺
Clean strainers thoroughly
• Central pump in the cellar is set incorrectly
• Insufficient heating water quantity
䡺
Check setting of the central pump
(∆p= constant)
䡺
Check flow rate at the heat meter while
drawing off potable water
• Thermostat is set incorrectly
䡺
Set potable water temperature to 70 °C
(position 7) or remove thermostat from the valve
completely
Setting: (min. t
draw off
= Flow
temp.
– 15K)
• Temperature sensor defective
䡺
Replace temperature controller
Fluctuating potable water temperature
• Dirt in the system/ strainers blocked
䡺
Clean strainers thoroughly
• Thermostat is set incorrectly
䡺 Set thermostat to a higher value
(max. t
draw off
= Flow
temp.
– 25K)
• Central pump in the cellar is set incorrectly
(e.g. ∆p= variable)
䡺
Set central pump to ∆p= constant
Temperature drops while drawing off water
• Airlocks in the system
䡺
Bleed system
• Heat exchanger calcified
䡺 See chapter “Decalcification of the heat
exchanger”
• Heat exchanger defective
䡺 Replace heat exchanger
Excessive potable water temperature
• Thermostat is set incorrectly
䡺 Set thermostat to a lower value

(min. t
draw off
= Flow
temp.
– 15K)
• Capillary of the temperature controller kinked
䡺
Replace temperature controller
• Temperature sensor defective
䡺
Replace temperature controller
Noise generation at the station
䡺
Localise noise, define kind of noise
• Wrong flow against valve
䡺 Check connections
• Differential pressure at the station set incorrectly
䡺
Check differential pressure (setting: 150 mbar)
• Vibrations are transmitted from the system
䡺
Check radiator valves
䡺 Check pipes
Heat exchanger is heated permanently
(even without drawing off potable water)
• PM controller defective
䡺 Replace PM controller

(OV item no.: 1343050)
Leakage at the bore of the PM controller
• PM controller leaking
䡺
Replace PM controller

(OV item no.: 1343050)
Heat exchanger leaking
• Limiting values of the water analysis are excee-
ded (Please observe the document “Demands
on potable water when using Oventrop fresh
water and dwelling stations”
䡺 Replace heat exchanger (possible with a
nickel brazed heat exchanger)
Hot water has no pressure
• Strainer in the cold water meter blocked
䡺 Clean strainer
• Heat exchanger calcified
䡺
See chapter “Decalcification of the heat
exchanger”