Carrier PSD006-070, PSV, 50PSH instruction manual DIP Switch Block S2 Accessory 1 Relay Options, Vac

Page 33

Heating/Cooling Thermostat Type — Switch 3 provides se- lection of thermostat type. Heat pump or heat/cool thermostats can be selected. Select OFF for heat/cool thermostats. When in heat/cool mode, Y1 is used for cooling stage 1, Y2 is used for cooling stage 2, W1 is used for heating stage 1 and O/W2 is used for heating stage 2. Select ON for heat pump thermostats. In heat pump mode, Y1 used is for compressor stage 1, Y2 is used for compressor stage 2, W1 is used for heating stage 3 or emergency heat, and O/W2 is used for reversing valve (heating or cooling) depending upon switch 4 setting.

O/B Thermostat Type — Switch 4 provides selection for heat pump O/B thermostats. O is cooling output. B is heating out- put. Select ON for thermostats with O output. Select OFF for thermostats with B output.

Dehumidification Fan Mode — Switch 5 provides selection of normal or dehumidification fan mode. Select OFF for dehu- midification mode. The fan speed relay will remain OFF dur- ing cooling stage 2. Select ON for normal mode. The fan speed relay will turn on during cooling stage 2 in normal mode.

Output — Switch 6 provides selection for DDC operation. If set to DDC output at EH2, the EH2 terminal will continuously output the last fault code of the controller. If the control is set to EH2 normal, then the EH2 will operate as standard electric heat output. Set the switch to ON to set the EH2 to normal. Set the switch to OFF to set the DDC output at EH2.

Boilerless Operation — Switch 7 provides selection of boiler- less operation and works in conjunction with switch 8. In boil- erless operation mode, only the compressor is used for heating when FP1 is above the boilerless changeover temperature set by switch 8 below. Select ON for normal operation or select OFF for boilerless operation.

Boilerless Changeover Temperature — Switch 8 on S1 pro- vides selection of boilerless changeover temperature set point. Select OFF for set point of 50 F or select ON for set point of 40 F.

If switch 8 is set for 50 F, then the compressor will be used for heating as long as the FP1 is above 50 F. The compressor will not be used for heating when the FP1 is below 50 F and the compressor will operates in emergency heat mode, staging on EH1 and EH2 to provide heat. If a thermal switch is being used instead of the FP1 thermistor, only the compressor will be used for heating mode when the FP1 terminals are closed. If the FP1 terminals are open, the compressor is not used and the control goes into emergency heat mode.

DIP SWITCH BANK 2 (S2) — This set of DIP switches is used to configure accessory relay options.

Switches 1 to 3 — These DIP switches provide selection of Accessory 1 relay options. See Table 14 for DIP switch combinations.

Switches 4 to 6 — These DIP switches provide selection of Accessory 2 relay options. See Table 15 for DIP switch combinations.

Table 14 — DIP Switch Block S2 —

Accessory 1 Relay Options

ACCESSORY 1

DIP SWITCH POSITION

RELAY OPTIONS

1

2

3

Cycle with Fan

On

On

On

Digital NSB

Off

On

On

Water Valve — Slow Opening

On

Off

On

OAD

On

On

Off

Reheat — Humidistat

Off

Off

Off

Reheat — Dehumidistat

Off

On

Off

LEGEND

NSB — Night Setback

OAD — Outside Air Damper

NOTE: All other DIP switch combinations are invalid.

Table 15 — DIP Switch Block S2 —

Accessory 2 Relay Options

ACCESSORY 2

DIP SWITCH POSITION

RELAY OPTIONS

4

5

6

Cycle with Compressor

On

On

On

Digital NSB

Off

On

On

Water Valve — Slow Opening

On

Off

On

OAD

On

On

Off

LEGEND

NSB — Night Setback

OAD — Outside Air Damper

NOTE: All other switch combinations are invalid.

Auto Dehumidification Mode or High Fan Mode — Switch 7 provides selection of auto dehumidification fan mode or high fan mode. In auto dehumidification fan mode, the fan speed relay will remain off during cooling stage 2 if terminal H is active. In high fan mode, the fan enable and fan speed relays will turn on when terminal H is active. Set the switch to ON for auto dehumidification fan mode or to OFF for high fan mode.

Factory Setting — Switch 8 is set to ON. Do not change the switch to OFF unless instructed to do so by the factory.

Units with Modulating Hot Water Reheat (HWR) Option — A heat pump equipped with hot water reheat (HWR) can operate in three modes: cooling, cooling with reheat, and heating. The cooling and heating modes are like any other water source heat pump. The reversing valve ("O" signal) is energized in cooling, along with the compressor contactor(s) and blower relay. In the heating mode, the revers- ing valve is deenergized. Almost any thermostat will activate the heat pump in heating or cooling modes. The Deluxe D microprocessor board, which is standard with the HWR option, will accept either heat pump (Y,O) thermostats or non- heat pump (Y,W) thermostats.

The reheat mode requires either a separate humidistat/ dehumidistat or a thermostat that has an integrated dehumidifi- cation function for activation. The Deluxe D board is config- ured to work with either a humidistat or dehumidistat input to terminal “H” (DIP switch settings for the Deluxe D board are shown in Table 16). Upon receiving an “H” input, the Deluxe D board will activate the cooling mode and engage reheat.

Table 16 — Humidistat/Dehumidistat Logic and

Deluxe D DIP Switch Settings

Sensor

2.1

2.2

2.3

Logic

Reheat

Reheat

(ON) - H

(OFF) - H

 

 

 

 

 

Humidistat

Off

Off

Off

Reverse

0 VAC

24 VAC

Dehumidistat

Off

On

Off

Standard

24 VAC

0 VAC

Table 17 shows the relationship between thermostat input signals and unit operation. There are four operational inputs for single-stage units and six operational inputs for dual-stage units:

Fan Only

Cooling Stage 1

Cooling Stage 2

Heating Stage 1

Heating Stage 2

Reheat Mode

33

Image 33
Contents Contents Installation, Start-Up, Service InstructionsSafety Considerations InstallationGeneral Physical Data 50PSH, PSV, PSD018-070 Units Typical Installation 50PSH Unit BSP ASPCAP Code Return Discharge CSP50PSV Dimensional Data HWR Hot Water Reheat Left Hand Right Hand A50-7846efBack Discharge Side DischargeMount the Unit Install Condensate DrainTrap Condensate Drain Connection Water Quality Guidelines Open Loop and Recirculating WellMaterial Metal Hose Minimum Bend Radii Typical Ground-Water Piping InstallationSupply/Return Hose Kit Wire Field Power SupplyDescription of Operation LED Alarm Relay Complete C Controller Fault CodesTrans AstatBMC Wire NumberCompr Yellow REDLWT ECMUnits with ECM, Complete C and LON Controller 460 A50-8363Units with ECM, Deluxe D and LON Controller 460 A50-8364SAT HpwsMves 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 ControlsA50-8441 Rnet Wiring SpecificationsA50-8442 Field-Supplied Sensors for Wshp Open ControllerWire Terminal Rnet WiringOperate ECM Interface Board A50-8443ECM Blower Motor Performance Data Setting SizeUnit Airflow CFM Speed Size Rated MIN FANCoil Units with Reheat ESP Loss Face Velocity FPMDeluxe D Control Jumper Settings Complete C Control Jumper SettingsPRE-START-UP Field Selectable InputsDIP Switch Block S2 Accessory 2 Relay Options DIP Switch Block S2 Accessory 1 Relay OptionsHumidistat/Dehumidistat Logic Deluxe D DIP Switch Settings VACA50-8145 HWR Operating ModesSTART-UP Unit Start-Up Cooling ModeOperating Limits Operating Limits 50PSH, PSV, PSD UnitsWater Temperature Change Through Heat Exchanger Unit Start-Up Heating ModeCooling Heating Water Flow Rate GPM Rise F Drop F Water Flow TempGPM/ton Pressure Heat Cooling Rise Drop Psig Flow Flow BACview6 Display Interface Unit Start-Up with Wshp Open Controls50PSH, PSV, PSD Coaxial Water Pressure Drop 50PSH, PSV, PSD Water Water Temperature F FlowUnit Size GPMAntifreeze Percentages by Volume Approximate Fluid Volume gal Per 100 Ft of PipeOperation Units with Aquazone Complete C ControlUnits with Wshp Open Multiple Protocol Units with HWR OptionPage Page LED Status Description of Operation Alarm Relay Complete C and Deluxe D Board System TestOff LED Code Fault Description Complete C Control LED Code Fault DescriptionsAquazone Deluxe D Control LED Indica Description Status LED Test LEDService Refrigerant Charging TroubleshootingAir Coil Fan Motor Removal Replacing the Wshp Open Controller’s BatFP1 and FP2 Thermistor Location Page Fault Description Solution ECM TroubleshootingA50-8448 ECM Pin ConnectorsA50-8447 ECM Troubleshooting Flow DiagramFault Heating Cooling Possible Cause Solution Wshp TroubleshootingGood Practices TXVCode 7 Auto Resetting Condensate FaultNo Fault Code Shown CodeHigh Head Pressure Temperature in HeatingLow Suction Pressure Low Discharge AirAppendix a Wshp Open Screen Configuration Appendix a Wshp Open Screen Configuration Weekly Schedule Set PointsException Schedules 1Appendix a Wshp Screen Open Configuration ServiceTest Configuration Service Point Name Password Editable Range Default LevelScreen Name Linkage AlarmPage Page Copyright 2009 Carrier Corporation II. START-UP 50PSH,PSV,PSD START-UP ChecklistCooling Cycle Analysis Heating Cycle AnalysisA50-8494 A50-8495