Danfoss DHP-R 7Ua, User Manual

Page 1: ...VU 102 user s manual CONTROL SYSTEM DHP R...

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Page 3: ...formation 21 3 6 Settings 21 3 6 1 Heat pump 21 3 6 2 Heating 23 3 6 3 Extra heater 24 3 6 4 Heat stop 24 3 6 5 Brine control 25 3 6 6 Hot water 25 3 6 7 WCS 26 3 6 8 TWC 26 3 6 9 Shunt groups 27 3 6...

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Page 5: ...e An outdoor temperature sensor a primary supply temperature sensor and the system primary circulation pump are all connected to the mas ter control system The master can also control auxiliary heatin...

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Page 7: ...erature is looked up in a curve This curve must be adjusted to fit the tem perature needs of the specific building it is to control The temperature that is looked up is used as a set point for the int...

Page 8: ...multiple heat pumps If all the heat pumps are running but the integral still drops then the auxiliary heater is needed Start extra heater decides how much below the starting va lue for the last heat p...

Page 9: ...The heater is started when the integral passes the limit for starting the auxiliary heater and is tur ned of when it rises above the limit for starting the last heat pump When the heater is started i...

Page 10: ...in circulation pump to stand still for a long time There is therefore a pump exercise function Once every day the circulation pump is started and run for one minute The pump exercise times can be adju...

Page 11: ...tion to start as the integral starts at zero In order to speed up the heating after a restart it is possible to activate forced start conditions If the primary supply temperature falls more than Lim f...

Page 12: ...ope rating pressure switch is activated When a heat pump stops producing hot water it will instead produce heat for the building if there is a demand for heat 2 2 4 Top Up function Before hot water p...

Page 13: ...if heater seldom reaches high tem peratures in normal operation 2 3 Heat pump restrictions 2 3 1 Time restrictions The heat pump has two time conditions that must be met if it is to be allowed to star...

Page 14: ...ne circulation pump and one shunt valve and measure one temperature The purpose of the shunt module is to control the measured tem perature using the shunt valve The functiona lity can be configured f...

Page 15: ...h a cooling system the cold side of the heat pumps are used to generate comfort cooling or cooling for other purposes To control a cooling system the module HPC CM is used 2 5 1 Cooling tank and integ...

Page 16: ...n and disconnect the bore hole The brine will then circulate only through the cooling tank and the heat pumps so that maximum heat is removed from the cooling tank 2 5 2 Surplus heat dumping The heat...

Page 17: ...emperature and relative humidity When connected the dew point con trol can be activated The control system will then calculate the dew point and if necessary raise the cooling circuit set point to avo...

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Page 19: ...rom a menu and to abort editing without saving the value The red alarm LED is lit when an alarm is active If there are alarm that needs to be acknowledged the LED will blink When the operator panel is...

Page 20: ...l press escape 3 3 Alarms The menu Active alarms shows all the alarms that are currently active if there are any The alarms monitor the occurrence of errors Some alarms indicate se rious malfunctions...

Page 21: ...the heat pump and the rest of the system Under Running time run time information is found Under Databases the values stored in databases are listed First select one ca tegory and press Ok then select...

Page 22: ...ing activates and inactivates the control pressostat alarm when the heat pump is producing heat Hot water stop cond This setting decides whether the heat pump should stop making hot water when the hot...

Page 23: ...justed at diffe rent room temperature deviations from the set point Calendar room temp A week schedule that decides at what times the room temperature set point should be adjusted Can be used to lower...

Page 24: ...rolled by the system Heat up delay Heat up delay time from when the extra heater blocking is released starting the burner until the shunt valve starts to use heat from the burner subsys tem Burner off...

Page 25: ...m allowed number of running pumps Brine out min temp Lowest allowed temperature for outgoing brine Brine in min temp Lowest allowed temperature for incoming brine Brine in max temp Highest allowed tem...

Page 26: ...hould not close completely this setting defines the minimum shunt signal 3 6 8 TWC Start temp out Temperature limit on the hot water outlet for starting the heater Stop temp out Temperature limit on t...

Page 27: ...temperatures is set Only for outdoor temp compensated shunt groups Shunt 1 set point Set point for shunt groups keeping a constant temperature Shunt 1 outdoor temp stop Outdoor temperature at which th...

Page 28: ...zero disables the control completely Circulation delay To allow cold water to be pumped up from the bore hole to the cooling tank before the valve is opened this setting defines a delay that begins wh...

Page 29: ...e manual override sub menu lists all the outputs and some other signals that can be manually overridden In one setting the value to override the controller is chosen and another activates and deactiva...

Page 30: ...ly the same module HPC EM The functionality is selected by dip switches on the front and if these are set wrong the module will be shown in the wrong sub menu list These modules will not work until ac...

Page 31: ...rms are allowed to be sent during a 24 hour period This limit is there to prevent badly set alarm limits and frequently reoccurring errors from spending too much money on SMS When the max limit has be...

Page 32: ...that uses Ethernet to upgrade software in the controller After 30 minutes the web passwords are reset to the values you get when you buy the web license regardless what they were before 3 8 13 Restor...

Page 33: ...eat pump In each heat pump regardless of whether it is a master or slave configura tions have to be set as to whether it is connected to make hot water or not In the menu Settings Heat pump you will f...

Page 34: ...if the sensor wiring is faulty The first step is therefore to check and get rid of all alarms However not all sensors have alarms and the absence of an alarm is not a guarantee that a sensor has been...

Page 35: ...e settings regarding heat and hot water Among the important things to do is to adjust the set point curve for heat so that it corresponds to the needs of the specific building The last step would be t...

Page 36: ...ture compensation curve is a kind of P factor for the controller Incorrectly set room temperature compensation can cause the primary supply temperature to oscillate and due to the high inertia of a bu...

Page 37: ...to relevant personnel also becomes more common E mail thus becomes another way to connect WM HPC to superior supervisory systems 5 3 Control by external PLC In some cases there may be a need to contr...

Page 38: ...5 4 The sum alarm relay output The heat pump control system has an alarm output that sends out 24 VAC as soon as any A or B alarm is active This signal can be used to send information to a superior c...

Page 39: ...e Sensor supply temp B X A fault in the heat pump s supply temperature sensor has been detected Sensor return temp B X A fault in the heat pump s return temperature sensor has been detected Broken out...

Page 40: ...trl err B X Large controller error on shunt group 6 Shunt 7 sensor B X Temperature sensor for shunt group 7 is faulty Shunt 7 ctrl err B X Large controller error on shunt group 7 Shunt 8 sensor B X Te...

Page 41: ...d outputs are connected to DIGITAL OUT Usage DO1 Start stop compressor DO2 Start stop brinepump DO3 Start stop rad pump DO4 Channel 36 DO5 Block extra heater DO6 Sum alarm DO7 System pump DIGITAL IN U...

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