Daikin EKHBH008BB3V3 Operation Manual

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Contents

EKHBH/X008BBIndoor unit and options for air to water heat pump system4PW62571-1A – 05.2011Operation manual14[1] Weather dependent set pointThe weather dependent set point field settings define the parametersfor the weather dependent operation of the unit. When weatherdependent operation is active the water temperature is determinedautomatically depending on the outdoor temperature: low outdoortemperatures will result in warmer water and vice versa. Duringweather dependent operation, the user has the possibility to shift upor down the target water temperature by a maximum of 5°C.■ Field settings for heating operation■ [1-00] Low ambient temperature (Lo_A): low outdoortemperature.■ [1-01] High ambient temperature (Hi_A): high outdoortemperature.■ [1-02] Set point at low ambient temperature (Lo_Ti): thetarget outgoing water temperature when the outdoortemperature equals or drops below the low ambienttemperature (Lo_A).Note that the Lo_Ti value should be higher than Hi_Ti, as forlow outdoor temperatures (i.e. Lo_A) warmer water isrequired.■ [1-03] Set point at high ambient temperature (Hi_Ti): thetarget outgoing water temperature when the outdoortemperature equals or rises above the high ambienttemperature (Hi_A).Note that the Hi_Ti value should be lower than Lo_Ti, as forwarmer outdoor temperatures (i.e. Hi_A) less warm watersuffices.■ Field settings for cooling operation■ [1-05] Weather dependent for cooling function enable (1)/disable (0)■ [1-06] Low ambient temperature (Lo2_A): low outdoortemperature.■ [1-07] High ambient temperature (Hi2_A): high outdoortemperature.■ [1-08] Set point at low ambient temperature (Lo2_Ti): thetarget outgoing water temperature when the outdoortemperature equals or drops below the low ambienttemperature (Lo2_A).Note that the Lo2_Ti value should be higher than Hi2_Ti, asfor low outdoor temperatures (i.e. Lo2_A) less cold watersuffices.■ [1-09] Set point at high ambient temperature (Hi2_Ti): thetarget outgoing water temperature when the outdoortemperature equals or rises above the high ambienttemperature (Hi2_A).Note that the Hi2_Ti value should be lower than Lo2_Ti, asfor warmer outdoor temperatures (i.e. Hi2_A) colder water isrequired.Tt Target water temperatureT A Ambient (outdoor) temperatureShift value Shift value[2] Disinfection function(1)Applies only to installations with a domestic hot water tank.The disinfection function disinfects the domestic hot water tank byperiodically heating the domestic hot water to a specific temperature.■ [2-00] Operation interval: day(s) of the week at which thedomestic hot water should be heated.■ [2-01] Status: defines whether the disinfection function isturned on (1) or off (0).■ [2-02] Start time: time of the day at which the domestic hotwater should be heated.■ [2-03] Set point: high water temperature to be reached.■ [2-04] Interval: time period defining how long the set pointtemperature should be maintained.TDHW Domestic hot water temperatureT U User set point temperature (as set on the user interface)T H High set point temperature [2-03]t TimeLo_TiLo2_TiLo_ALo2_AHi_AHi2_ATATt+ 0500– 05Hi_TiHi2_Ti Shift value(1) When the unit is configured for restricted power supply condition mode,see "Appendix" on page 22.CAUTIONThe disinfection function field settings must be configuredby the installer according to the applicable legislation.WARNINGBe aware that the domestic hot water temperature at thehot water tap will be equal to the value selected in fieldsetting [2-03] after a disinfection operation.When the high domestic hot water temperature can be apotential risk for human injuries, a mixing valve (fieldsupply) shall be installed at the hot water outlet connectionof the domestic hot water tank. This mixing valve shallsecure that the hot water temperature at the hot water tapnever rises above a set maximum value. This maximumallowable hot water temperature shall be selectedaccording to the applicable legislation.CAUTIONMake sure that the disinfection function start time [2-02]with defined duration [2-04] is not interrupted by possibledomestic hot water demand.00.00 22.00 24.0001.00 23.00 tTDHWTHTU[2-02][2-03] [2-04]