Cetetherm Midi Wall IQHeat
Installation, service and operating instruction
8
•
Mount the outdoor temperature sensor on the north side of the building, 2 metres above the ground, or
higher. For installation of the outdoor temperature sensor, see
6.3 Installation of outdoor temperature
Picture 2
3.4
Mounting the options
•
If the substation shall be provided with a 3-point HB metering, see mounting instructions
•
If the substation shall be provided with a floor stand, see mounting instructions
3.5
Adjustments and settings for start up
•
Open incoming cold water supply and fill the service water and heating circuits, bleeding off any
trapped air.
•
Check the operation and opening pressures of the safety valves.
•
Adjust the hot water temperature by having a hot water tap open at normal flow rate for a time.
Measure the temperature at the draw-off point with a thermometer. The temperature should be
approximately 55°C. It takes about 20 seconds to get stable tap water temperature. See
troubleshooting chart for adjusting hot water temperature.
NOTE:
Make sure that no cold water is mixed with hot water while making this adjustment.
•
Start the heating circulation pump at the strongest flow setting during some minutes. The pressure
should be at least 100 kPa during winter and at least 60 kPa during summer.
•
Set the pump capacity of the heating circulation pump according to chapter
. Use the lowest setting that manages the heating demand for best electrical efficiency
Make any necessary adjustment of the heating curve of the control and regulating equipment.
Information about the controller can be found in this document.
•
Set time, date and hot water temperature on the adjustment center.
•
The property owner must be informed on how to operate, adjust and maintain the unit. It is overly
important to inform about the safety systems and the risks associated with the high pressure and
temperature of the district heating systems water supply.
3.6
Dismantlement
When the time comes for the substation to be dismantled and scrapped it must be disposed of in the correct
manner in accordance with local or national regulations.
3.7
Commissioning advice
The controller has been set at the factory. If any function needs tuning, values can be changed with reference
to this manual for parameter setting. Initially, the commissioning process should be carried out with the factory
settings. The parameter settings need tuning only if the district heat terminal does not function accordingly.
Summary of Contents for Midi Wall IQHeat
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