Demir Dokum HK 50 M Service Bulletin
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HK 50 M – HK 10M – HK 100S SERVICE BULLETIN3.3. DOMESTIC HOT WATER PARAMETER SETTINGSThe following set points are the functions set for the domestic water circle.3.3.1. Setpoint_DHW (Domestic hot water setting)Domestic water hot water settings (parameter 2)It is the value that determines the requested domestic water temperature. The maximum limit is set byparameter 8. (T_DHW_limit, Temperature can be set to 60 oC) The set temperature is 50 oC.3.3.2. BOILER type (DHW_Type) (Parameter 6)0 = No system for domestic hot water1 = Quick hot water exchanger with probe type2 = Tank with probe type6 = Tank with thermostat typeFor tank with thermostat type, if the system contact is closed, the hot water system is active. Otherwise, it isnot active. (If it is not desired to be active, it is set to Pre-set 0)3.3.3. Domestic hot water priority (DHW_Priority) (parameter 9)0 = Sliding priority ADuring the priority supply of the domestic water request, if it is at a very low temperature in the heatingsystem the system allows heating of the central heating system with the following function. Parameter 9 = 0is entered for this.(Setpoint_Ch-50 oC) < Manifold temp. < (Setpoint_Ch+1 oC )Note: Here, the heating system will be activated depending on whether the heating system is selected forhigh or low temperature.1= Sliding priority BIf parameter 9 = 1 is entered, the system does not stop the long-term heating system. As an explanation, wecan say that the system does not allow the temperature to fall.For this purpose, the detection of the system in the program is as follows.(Setpoint_Dhw+T_Tank_extra)-50 oC< Manifold temp. < (Setpoint_Dhw+T_Tank_extra)+1 oCT_tank_extra = Par.10 = preset to 30 oC2 = Absolute priority (priority is only for domestic water preparation boiler)3.4. MAIN FUNCTIONS3.4.1 Domestic hot water function priority:Domestic hot water priority; over the master card, the system has a priority on the operation position at highor low temperature.3.4.2. Frost protection function:Frost protection is possible in system stand-by mode. If the installation water temperature falls below 5 oC,the system starts to operate at the high temperature heating circuit.If outdoor air sensor is connected to the system, if the outdoor air temperature falls below 3oC and if the watertemperature of the installation manifold drops below 5oC after 10 minutes, one burner in the system starts towork at max load and works until the manifold water temperature reaches 20 oC.Service Administration 28 03/2010 |
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