Carrier Touch Pilot Control Series Control Manual

8.4 - Control pointThe control point represents the water temperature that the unitmust produce. The control point calculation is based on the activesetpoint and its reset.control point = active setpoint + resetThe heat exchanger entering water temperature is controlled bydefault, but the heat exchanger leaving water temperature canalso be controlled (service configuration is required).8.4.1 - Active setpointThree setpoints can be selected as active in Cooling mode andtwo setpoints in Heating mode.Setpoint 1 Setpoint 2 Setpoint 3Cooling Occupied period Unoccupied period Ice storagecooling setpointHeating Occupied period Unoccupied period -The first cooling/heating setpoint is normally used during occupiedperiods, whereas the second cooling/heating setpoint is usedduring unoccupied periods. The third cooling setpoint is used forice storage.Depending on the current operating type, the active setpoint canbe selected:- By choosing the active setpoint in the General Parametersmenu (Setpoint Select, GENUNIT).- Via the volt-free contacts (see section 4.7).- Via network commands [SP_SEL].- Via the schedule setting – schedule 2 (OCCPC02S).Mode Setpoint controlLocalRegardless of the current setpoint schedule, the user can selectthe setpoint manually via the control interface (Setpoint Select,GENUNIT).RemoteIf the setpoint switch is used once, the setpoint schedule controlwill be cancelled (setpoint control will be based on setpointswitch only).NetworkRegardless of the current setpoint schedule, the user can selectthe setpoint manually via the control interface (Setpoint Select,GENUNIT) or the service tool. Once the forced selection isdeactivated, the setpoint schedule will be used again.The following tables summarise the possible setpoint selectionsbased on the control type (local, remote, network) and the followingparameters:- Heating/Cooling operating mode.- Setpoint select.- Setpoint selection contact status.- Schedule 2 status for setpoint selection.8 - STANDARD CONTROL OPERATIONS AND OPTIONSLocal operating modeParameters statusActive setpointHeat/Cool[hc_sel]Setpoint[sp_sel]Ice mode enabled[Ice_cnfg]Ice done switch[Ice_sw]Setpoint switch[setp_sw]Setpoint occupancy[sp_occ]cool sp-1 - * * - cooling setpoint 1cool sp-2 no * * - cooling setpoint 2cool sp-2 yes close * cooling setpoint 2cool sp-2 yes open * ice setpointcool auto - * * occupied cooling setpoint 1cool auto no * * unoccupied cooling setpoint 2cool auto yes close * unoccupied cooling setpoint 2cool auto yes open * unoccupied ice setpointheat sp-1 - * * - heating setpoint 1heat sp-2 - * * - heating setpoint 2heat auto - * * occupied heating setpoint 1heat auto - * * unoccupied heating setpoint 2(*) any configuration, (-) default configurationRemote operating modeParameters statusActive setpointHeat/Cool[hc_sel]Setpoint[sp_sel]Ice mode enabled[Ice_cnfg]Ice done switch[Ice_sw]Setpoint switch[setp_sw]Setpoint occupancy[sp_occ]cool - - * open - cooling setpoint 1cool - no * close - cooling setpoint 2cool yes close close cooling setpoint 2cool - yes open close - ice setpointheat - - * open - heating setpoint 1heat - - * close - heating setpoint 2(*) any configuration, (-) default configurationNetwork operating modeParameters statusActive setpointHeat/Cool[hc_sel]Setpoint[sp_sel]Ice mode enabled[Ice_cnfg]Ice done switch[Ice_sw]Setpoint switch[setp_sw]Setpoint occupancy[sp_occ]cool - - * * occupied cooling setpoint 1cool - - * * unoccupied cooling setpoint 2heat - - * * occupied heating setpoint 1heat - - * * unoccupied heating setpoint 2(*) any configuration, (-) default configuration26