Carrier PSV, PSD006-070, 50PSH Units with HWR Option, Units with Wshp Open Multiple Protocol

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application, all compressor relays and related functions will operate per their associated DIP switch 2 setting on S1.

HEATING STAGE 3 — In Heating Stage 3 mode, the Fan Enable, Fan Speed and Compressor relays remain on. The EH1 output is turned on immediately. With continuing Heat Stage 3 demand, EH2 will turn on after 10 minutes. EH1 and EH2 are turned off immediately when the Heating Stage 3 demand is re- moved. The control reverts to Heating Stage 2 mode.

The output signal EH2 will be off if FP1 is greater than 45 F AND FP2 (when shorted) is greater than 110 F during Heating Stage 3 mode. This condition will have a 30-second recognition time. Also, during Heating Stage 3 mode, EH1, EH2, Fan Enable, and Fan Speed will be ON if G input is not active.

EMERGENCY HEAT — In Emergency Heat mode, the Fan Enable and Fan Speed relays are turned on. The EH1 output is turned on immediately. With continuing Emergency Heat de- mand, EH2 will turn on after 5 minutes. Fan Enable and Fan Speed relays are turned off after a 60-second delay. The control reverts to Standby mode.

Output EH1, EH2, Fan Enable, and Fan Speed will be ON if the G input is not active during Emergency Heat mode.

COOLING STAGE 1 — In Cooling Stage 1 mode, the Fan Enable, compressor and RV relays are turned on immediately. If configured as stage 2 (DIP switch set to OFF) then the com- pressor and fan will not turn on until there is a stage 2 demand. The Fan Enable and compressor relays are turned off immedi- ately when the Cooling Stage 1 demand is removed. The con- trol reverts to Standby mode. The RV relay remains on until there is a heating demand. If there is a master/slave or dual compressor application, all compressor relays and related func- tions will track with their associated DIP switch 2 on S1.

COOLING STAGE 2 — In Cooling Stage 2 mode, the Fan Enable, compressor and RV relays remain on. The Fan Speed relay is turned on immediately and turned off immediately once the Cooling Stage 2 demand is removed. The control reverts to Cooling Stage 1 mode. If there is a master/slave or dual compressor application, all compressor relays and related functions will track with their associated DIP switch 2 on S1.

NIGHT LOW LIMIT (NLL) STAGED HEATING — In NLL staged Heating mode, the override (OVR) input becomes ac- tive and is recognized as a call for heating and the control will immediately go into a Heating Stage 1 mode. With an addition- al 30 minutes of NLL demand, the control will go into Heating Stage 2 mode. With another additional 30 minutes of NLL demand, the control will go into Heating Stage 3 mode.

Units with HWR Option

FAN ONLY — A (G) call from the thermostat to the (G) terminal of the Deluxe D control board will bring the unit on in fan only mode.

COOLING STAGE 1 — A simultaneous call from (G), (Y1), and (O) to the (G), (Y1), (O/W2) terminals of the Deluxe D control board will bring the unit on in Cooling Stage 1.

COOLING STAGE 2 — A simultaneous call from (G), (Y1), (Y2), and (O) to the (G), (Y1), (Y2), and (O/W2) ter- minals of the Deluxe D control board will bring the unit on in Cooling Stage 2. When the call is satisfied at the thermo- stat the unit will continue to run in Cooling Stage 1 until the Cooling Stage 1 call is removed or satisfied, shutting down the unit.

NOTE: Not all units have two-stage cooling functionality.

HEATING STAGE 1 — A simultaneous call from (G) and (Y1) to the (G) and (Y1) terminals of the Deluxe D control board will bring the unit on in Heating Stage 1.

HEATING STAGE 2 — A simultaneous call from (G), (Y1), and (Y2) to the (G), (Y1), and (Y2) terminals of the Deluxe

D control board will bring the unit on in Heating Stage 2. When the call is satisfied at the thermostat the unit will con- tinue to run in Heating Stage 1 until the call is removed or satisfied, shutting down the unit.

NOTE: Not all units have two-stage heating functionality.

REHEAT MODE — A call from the humidistat/dehumidis- tat to the (H) terminal of the Deluxe D control board will bring the unit on in Reheat mode if there is no call for cool- ing at the thermostat. When the humidistat/dehumidistat call is removed or satisfied the unit will shut down.

NOTE: Cooling always overrides Reheat mode. In the Cooling mode, the unit cools and dehumidifies. If the cool- ing thermostat is satisfied but there is still a call for dehu- midification, the unit will continue to operate in Reheat mode.

Units with WSHP Open Multiple Protocol —

The WSHP Open multi-protocol controller will control me- chanical cooling, heating and waterside economizer outputs based on its own space temperature input and set points. An optional CO2 IAQ (indoor air quality) sensor mounted in the space can maximize the occupant comfort. The WSHP Open controller has its own hardware clock that is automatically set when the heat pump software is downloaded to the board. Oc- cupancy types are described in the scheduling section below. The following sections describe the functionality of the WSHP Open multi-protocol controller. All point objects referred to in this sequence of operation will be referenced to the objects as viewed in the BACview6 handheld user interface.

SCHEDULING — Scheduling is used to start/stop the unit based on a time period to control the space temperature to spec- ified occupied heating and cooling set points. The controller is defaulted to control by occupied set points all the time, until ei- ther a time schedule is configured with BACview6, Field Assis- tant, i-Vu®Open, or a third party control system to enable/dis- able the BAS (Building Automation System) on/off point. The local time and date must be set for these functions to operate properly. The occupancy source can be changed to one of the following:

Occupancy Schedules — The controller will be occupied 24/7 until a time schedule has been configured using either Field Assistant, i-Vu Open, BACview6 or a third party control system to enable/disable the BAS on/off point. The BAS point can be disabled by going to Config, then Unit, then Occupancy Sched- ules and changing the point from enable to disable then click- ing OK.

NOTE: This point must be enabled in order for the i-Vu Open, Field Assistant, or BACview6 control system to assign a time schedule to the controller.

Schedule_schedule — The unit will operate according to the schedule configured and stored in the unit. The schedule is accessible via the BACview6 Handheld tool, i-Vu Open, or Field Assistant control system. The daily schedule consists of a start/stop time (standard or 24-hour mode) and seven days of the week, starting with Monday and ending on Sunday. To enter a daily schedule, navigate to Config, then Sched, then enter BACview6 Admin Password (1111), then go to schedule_schedule. From here, enter either a Weekly or Excep- tion schedule for the unit.

Occupancy Input Contact — The WSHP Open controller has the capability to use an external dry contact closure to deter- mine the occupancy status of the unit. The Occupancy Sched- ules will need to be disabled in order to utilize the occupancy contact input.

NOTE: Scheduling can only be controlled from one source.

BAS (Building Automation System) On/Off — A BAS system that supports network scheduling can control the unit through a network communication and the BAS scheduling function once the Occupancy Schedules have been disabled.

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Contents Contents Installation, Start-Up, Service InstructionsInstallation Safety ConsiderationsGeneral Physical Data 50PSH, PSV, PSD018-070 Units Typical Installation 50PSH Unit Code Return Discharge CSP ASPBSP CAP50PSV Dimensional Data HWR Hot Water Reheat Left Hand Right Hand A50-7846efBack Discharge Side DischargeMount the Unit Install Condensate DrainTrap Condensate Drain Connection Open Loop and Recirculating Well Water Quality GuidelinesMaterial Metal Hose Minimum Bend Radii Typical Ground-Water Piping InstallationSupply/Return Hose Kit Wire Field Power SupplyAstat Complete C Controller Fault CodesDescription of Operation LED Alarm Relay TransYellow RED Wire NumberBMC ComprLWT ECMUnits with ECM, Complete C and LON Controller 460 A50-8363Units with ECM, Deluxe D and LON Controller 460 A50-8364Hpws SATMves WHSP-OPEN 8354 A508356 LWT Wshp Open Control A50-838050PSH, PSV, PSD Electrical Data PSC High-Static Motor 50PSH, PSV, PSD Electrical Data PSC Motor50PSH, PSV, PSD Electrical Data, ECM Motor Low Voltage Field Wiring Wire Field ControlsField-Supplied Sensors for Wshp Open Controller Rnet Wiring SpecificationsA50-8441 A50-8442A50-8443 Rnet WiringWire Terminal Operate ECM Interface BoardECM Blower Motor Performance Data Setting SizeFPM Rated MIN FANUnit Airflow CFM Speed Size Coil Units with Reheat ESP Loss Face VelocityField Selectable Inputs Complete C Control Jumper SettingsDeluxe D Control Jumper Settings PRE-START-UPVAC DIP Switch Block S2 Accessory 1 Relay OptionsDIP Switch Block S2 Accessory 2 Relay Options Humidistat/Dehumidistat Logic Deluxe D DIP Switch SettingsA50-8145 HWR Operating ModesOperating Limits 50PSH, PSV, PSD Units Unit Start-Up Cooling ModeSTART-UP Operating LimitsWater Flow Temp Unit Start-Up Heating ModeWater Temperature Change Through Heat Exchanger Cooling Heating Water Flow Rate GPM Rise F Drop FGPM/ton Pressure Heat Cooling Rise Drop Psig Flow Flow BACview6 Display Interface Unit Start-Up with Wshp Open ControlsGPM 50PSH, PSV, PSD Water Water Temperature F Flow50PSH, PSV, PSD Coaxial Water Pressure Drop Unit SizeUnits with Aquazone Complete C Control Approximate Fluid Volume gal Per 100 Ft of PipeAntifreeze Percentages by Volume OperationUnits with Wshp Open Multiple Protocol Units with HWR OptionPage Page Complete C and Deluxe D Board System Test LED Status Description of Operation Alarm RelayOff Description Status LED Test LED Complete C Control LED Code Fault DescriptionsLED Code Fault Description Aquazone Deluxe D Control LED IndicaService Replacing the Wshp Open Controller’s Bat TroubleshootingRefrigerant Charging Air Coil Fan Motor RemovalFP1 and FP2 Thermistor Location Page Fault Description Solution ECM TroubleshootingA50-8448 ECM Pin ConnectorsA50-8447 ECM Troubleshooting Flow DiagramTXV Wshp TroubleshootingFault Heating Cooling Possible Cause Solution Good PracticesCode Condensate FaultCode 7 Auto Resetting No Fault Code ShownLow Discharge Air Temperature in HeatingHigh Head Pressure Low Suction PressureAppendix a Wshp Open Screen Configuration Appendix a Wshp Open Screen Configuration Schedules 1 Set PointsWeekly Schedule ExceptionService Appendix a Wshp Screen Open ConfigurationTest Point Name Password Editable Range Default Level Configuration ServiceScreen Name Linkage AlarmPage Page Copyright 2009 Carrier Corporation II. START-UP 50PSH,PSV,PSD START-UP ChecklistA50-8495 Heating Cycle AnalysisCooling Cycle Analysis A50-8494
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