• To compensate the lowered heat pump heating performance under very cold weather conditions, the FSV #4023 should be set to “1(On)”(Default). -The threshold temperature to use backup heater for cold weather compensation: FSV #4024, Default “0.C”, Range -15 ~ 35.C -Above the threshold temperature, the backup heater usage is restricted to save energy consumption. • The FSV #4022 for backup heater priority should be set to “0(both)”(Default) or “1”(backup) to use backup heater. If not(booster heater priority), the backup heater can be operated in case of no booster heater demand. To use both heaters together at the same time, please check the capacity of the power circuit breaker of your house before. External Backup Boiler for Space Heating (Field Option) • The FSV #4031 should be set to “1(Yes)” to use a backup boiler as an additional heat source. By default option(“0(No)), no installation. • Under the installation of backup boiler in your house, you can freely choose the boiler priority(FSV #4032, Default “0(Off)”). • To compensate the lowered heat pump heating performance under very cold weather conditions, the backup boiler will be operating instead of heat pump under the threshold temperature(FSV #4033, Default “-15.C”, Range -20 ~ 5.C). ENGLISH Operating advanced function fIELD SETTING MoDE others : Code 50.. Field Setting Value Main Menu & Code Sub Menu Function Description Sub Code Default Min Max Step Unit Others Code 50.. Outing Water Out Temp for Cooling ..11 25 5 25 1 .C Room Temp for Cooling ..12 30 18 30 1 .C Water Out Temp for Heating ..13 25 15 55 1 .C Room Temp for Heating ..14 16 16 30 1 .C Auto Cooling WL1 Temp ..15 25 5 25 1 .C Auto Cooling WL2 Temp ..16 25 5 25 1 Auto Heating WL1 Temp ..17 15 15 55 1 .C Auto Heating WL2 Temp ..18 15 15 55 1 .C Target Tank Temp ..19 30 30 70 1 .C DHW Saving Mode Temp Difference ..21 5 0 40 1 .C TDM Variable A2A Max Operation Time ..31 30 5 60 5 min A2W Min Operation Time ..32 3 0 10 1 min Outing Mode (Hot Key of Wired Remote Controller) • All the target temperatures(both water outlet and room) for space heating/cooling/ auto(water-law) modes and the target tank temperature for DHW heating mode will be changed to the values defined in the table above to save energy consumption during the vacancy of house. With the lowered target temperatures(FSV #5011 ~ #5019), the system will be operated normally. Economic DHW Heating • Which is heat pump only, saving energy consumption. A target temperature of DHW shall be lowered as much as Users set with field setting values stored in wired remote controller. -New target DHW tank temperature will be the value subtracted the difference(#5021) from the present user’s setting. TDM(Time-Division Multi) variables • Under the installation of both A2A(Air-To-Air type air conditioner) and A2W(Air-To-Water type hydro unit) at the same time, our outdoor machine can supply its full capacity to the operating indoor machines(including A2A and A2W). If there are simultaneous operating demands from many A2A machines with A2W, the priority of controlling the outdoor machine(ex: compressor frequency) will be given to A2A, because of their fast response for use’s comfort. Only the remaining capacity of outdoor machine will be given to A2W during A2A’s normal operation. In this case, it might take very long time for A2W heating, so the outdoor machine will alternate the controlling priorities between A2A and A2W with time basis. • A2A maximum operation time: FSV #5031(Default “30 min.”, Range 5 ~ 60 min.), After this maximum time, the outdoor machine will operate only for A2W to speed up the A2W’s heating/cooling performance, even though there are A2A’s continuous operation demands. • A2W minimum operation time: FSV #5032(Default “3 min.”, Range 0 ~ 10 min.), in this minimum time, the outdoor machine will operate only for A2W, even though there are no more A2W’s continuous operation demands. 42_ Operating advanced function Appendix TEMPERaTURE TabLE available operation range Mode Target temperature Display Setting range Current display Setting method Control methodSet View Default Available Cooling Leaving water O O 16~25.C • Min : 5~18.C • Max : 18~25.C -50~94.C Up/Down Hydro or Indoor unit Room O O 18~30.C • Min : 18~22.C • Max : 24~30.C -50~94.C Up/Down Indoor unit Heating Leaving water O O 25~55.C • Min : 15~37.C • Max : 37~55.C -50~94.C Up/Down Hydro or Indoor unit Room O O 16~30.C • Min : 16~22.C • Max : 24~30.C -50~94.C Up/Down Indoor unit Water Law Cooling Outdoor X X 30~40.C • Min : 25~35.C • Max : 35~45.C -50~94.C Field Setting Mode SET/VIEW mode Hydro unit or Thermostat (Th-1 : Floor, Th-2 : FCU) Leaving water (WL1-Floor) X X 25~18.C • Min : 18~25.C • Max : 5~18.C -50~94.C Leaving water (WL2-FCU) X X 18~5.C • Min : 18~25.C • Max : 5~18.C -50~94.C Heating Outdoor X X -10~15.C • Min : -20~5.C • Max : 10~20.C -50~94.C Leaving water (WL1-Floor) X X 40~25.C • Min : 40~55.C • Max : 17~37.C -50~94.C Leaving water (WL2-FCU) X X 50~35....

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