Cetetherm Midi Wall IQHeat, Инструкция по установке, обслуживанию и эксплуатации

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Cetetherm Midi Wall IQHeat
Installation, service and operating instruction
22
9
Service instructions
To avoid the risk of scalding, make sure that no-one draws any water while servicing the
substation.
Grey marked service actions must be carried out by an authorized service technician.
NOTE: Make sure that the Midi Wall substation has been correctly installed.
For more information about IQHeat, see User instruction IQHeat Doc-1552 .
9.1 Tap water, service instructions
9.1.1 Tap water too cold
Reason Action
District heating supply too low Check the primary inlet temperature
The temperature can be checked by means of the energy meter,
minimum 65ºC, or at the district heating medium supply.
The hot water drain temperature can be monitored on the control panel
display, see
User instruction IQHeat Doc-1552 chapter Hot water
circuit .
District heating strainer clogged See
10.1 Check if the district heating strainer is blocked.
Hot water valve and actuator does not
work See
10.2 Check the function of the heating and hot water valve and
actuator
.
9.1.2 Tap water too warm
Reason Action
Hot water valve and actuator does not
work See
10.2 Check the function of the heating and hot water valve and
actuator
.
9.1.3 Hot water temperature unstable
Reason Action
Pending differential pressure Check available differential pressure and the primary inlet
temperature
The temperature can be checked by means of the energy meter,
minimum 65ºC, or at the district heating medium supply.
Faulting settings for drain hot water Check pre-set parameters on control panel display
Check set value for drain hot water, see User instruction IQHeat Doc-
1552 chapter Hot water circuit.
District heating strainer clogged See
10.1 Check if the district heating strainer is blocked .
DHWC pump is not running Check that the electrical power is on.
See
10.4 Check DHWC pump .