Daikin EKHBX030BA Installation Manual

Also see for EKHBH030BA: Operation manual

EKHBH/X030BAIndoor unit for air to water heat pump system4PW62568-1 – 07.2010Installation manual23Room thermostat installation configurationThe following table summarizes the required configuration andthermostat wiring at the terminal block (X2M: 1, 2, 3, 4) in the switchbox. Pump operation is listed in the third column. The three lastcolumns indicate whether the following functionality is available onthe user interface (UI) or handled by the thermostat (T):• space heating or cooling on/off (y)• heating/cooling changeover (=)• heating and cooling schedule timers (pr)Pump operation configurationWithout room thermostat: DIP switch SS2-3 = OFFWhen no thermostat is connected to the indoor unit, pump operationwill be determined by the leaving water temperature.To force continuous pump operation when no room thermostat isconnected do the following:- set toggle switch SS2-3 to ON,- short-circuit the terminal numbers 1-2-4 on the terminal blockin the switch box.With room thermostat: DIP switch SS2-3 = ONWhen the thermostat is connected to the indoor unit, the pump willoperate continuously whenever there is heating or cooling demandrequested by the thermostat.Dual set pointWhen dual set point is enabled, the pump operation will bedetermined depending on the status of the DIP switch SS2-3 and setpoint selection contacts. Refer to the pump operation configurationswhen the thermostat is connected or not as described above.The following table summarizes the required configuration and wiringat the terminal block (X2M: 1, 2, 4) in the switch box. Pump operationis listed in the third column. The three last columns indicate whetherthe following functionality is available on the user interface (UI) orhandled by the set point selection contacts SP1 and SP2:• space heating or cooling on/off (y)• heating/cooling changeover (=)• heating and cooling schedule timers (pr)■ When no room thermostat is connected tothe indoor unit, toggle switch SS2-3 should beset to OFF.■ When the room thermostat is connected tothe indoor unit, toggle switch SS2-3 should beset to ON.■ On the room thermostat, confirm the correct settings (6®02=yes,6®05=9, 6®06=5) to prevent the pump from repeatedly turning onand off (i.e. chattering), and thereby impacting the lifetime ofthe pump.■ When the room thermostat is connected to the indoorunit, the heating and cooling schedule timers arenever available. Other schedule timers are notaffected. For more information on the schedule timers,refer to the operation manual.■ When the room thermostat is connected to the indoorunit, and the = button or y button is pressed, thecentralised control indicator e will flash to indicatethat the room thermostat has priority and controlson/off operation and change over operation.Thermostat ConfigurationPumpoperation yyyy ==== pppprrrrNo thermostat • SS2-3 = OFF• wiring: (non)determined byleaving watertemperature(a)(a) The pump will stop when space heating/cooling is turned off or when the waterreaches the desired water temperature as set on the user interface. With spaceheating/cooling turned on, the pump will then run every 5 minutes during 3minutes to check the water temperature.UI UI UI• SS2-3 = ON• wiring:on when spaceheating orcooling is on(y)UI UI UIHeating onlythermostat• SS2-3 = ON• wiring: (seeinstallationmanual of theroomthermostat kit)on whenheatingrequest byroomthermostatT — —Thermostat withheating/coolingswitch• SS2-3 = ON• wiring: (seeinstallationmanual of theroomthermostat kit)on whenheatingrequest orcooling requestby roomthermostatT T —4321ONOFF4321ONOFFX2M1 2 3 4X2M1 2 3 4NOTE To set the pump speed, refer to "Setting the pumpspeed" on page 25.When dual set point is enabled, the "forced continuouspump operation" is not possible. When SS2-3 is ON whileSP1 and SP2 are both closed, the pump operation will bethe same operation as "with room thermostat" and thesecond set point will be the applicable set point. Refer to"Dual set point control" on page 30.Dual set pointConfiguration Pump operation yyyy ==== pppprrrr• [7-02]=1• SS2-3 = OFF• wiring:determined byleaving watertemperature(a)(a) The pump will stop when space heating/cooling is turned off or when the waterreaches the desired water temperature as set on the user interface. With spaceheating/cooling turned on, the pump will then run every 5 minutes during 3minutes to check the water temperature.UI UI UI• [7-02]=1• SS2-3 = ON• wiring:on when main or/andsub set point isrequestedSP2/SP1 UI —SP1 = First set point contactSP2 = Second set point contactX2MSP1SP21 2 3 4X2M1 2 3 4SP1SP2