Cetetherm Mini Plus CM737
Installation, service and operating instruction
8
4.4
Mounting options
•
If the substation is connected to a system sensitive to high temperature or to a low temperature system,
for example floor heating, a safety thermostat must be mounted and activated before start up.
See chapter
4.5
Adjustments and settings
•
Open incoming cold-water supply and fill the service water and heating circuits, bleeding off any
trapped air.
•
Allow 5 minutes for the controller start up sequence and to regain functionality after a power cut.
See
7.3 Starting up and component control of control panel
•
Check the operation and opening pressures of the safety valves.
•
Now 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
15.1 Tap water service instructions
for adjusting hot water temperature.
NOTE:
Make sure that no cold water is mixed with the hot water while making this adjustment.
•
Start the heating circulation pump with the highest output setting. Let the heating system heat up and
bleed the system again, see
15.2 Heating system service instructions
. After final bleeding, the pressure
should not be less than 1.0 bar in winter and not less than 0.6 bar in summer.
•
Set the pump capacity of the heating circulation pump according to the pressure head diagram. Use the
lowest setting that manages the heating demand for best electrical efficiency.
•
Activate the outdoor sensor (needed for heating curve control) and/or room temperature sensor via the
room panel. Se
7.4 Configure the control panel after installation
•
Set the day and time on the operator control panel. See
and
•
Set the operating mode on control panel. See
8.1 Choosing the operating mode
•
The property owner must be instructed in the operation, setting and care of the unit. It is particularly
important to provide information about the safety systems and about hazards that may arise in relation
to the high pressure and temperature of the district heating water.
4.6
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.
4.7
Commissioning advice
The controller has been set at the factory. If any function needs tuning, values can be changed regarding this
manual for parameter setting. Initially, the commissioning process should be carried out with the factory
settings. To activate Eco function or summer heating, see
Category 2 parameters: ECO-functions.
