Carrier RDS006-060, RVS, RVR, RHR, RVC, RHS, 50RHC Operation, Units with Aquazone Complete C Control

Page 36

Table 25 — Approximate Fluid Volume (gal.)

per 100 Ft of Pipe

 

PIPE

 

DIAMETER (in.)

VOLUME (gal.)

 

Copper

 

1

4.1

 

 

 

1.25

6.4

 

 

 

1.5

9.2

 

Rubber Hose

 

1

3.9

 

Polyethylene

 

3/4 IPS SDR11

2.8

 

 

 

1 IPS SDR11

4.5

 

 

 

11/4 IPS SDR11

8.0

 

 

 

1/2 IPS SDR11

10.9

 

 

 

2 IPS SDR11

18.0

 

 

 

11/4 IPS SCH40

8.3

 

 

 

11/2 IPS SCH40

10.9

 

 

 

2 IPS SCH40

17.0

 

LEGEND

 

 

IPS

— Internal Pipe Size

 

 

SCH

— Schedule

 

 

SDR

— Standard Dimensional Ratio

 

NOTE: Volume of heat exchanger is approximately 1.0 gallon.

Table 26 — Antifreeze Percentages by Volume

 

MINIMUM TEMPERATURE FOR

ANTIFREEZE

 

FREEZE PROTECTION (F)

 

 

10

 

15

20

 

25

Methanol (%)

25

 

21

16

 

10

100% USP Food Grade

38

 

30

22

 

15

Propylene Glycol (%)

 

 

 

 

 

 

 

 

Ethanol (%)

29

 

25

20

 

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Cooling Tower/Boiler Systems — These systems typ- ically use a common loop temperature maintained at 60 to 90 F. Carrier recommends using a closed circuit evaporative cooling tower with a secondary heat exchanger between the tower and the water loop. If an open type cooling tower is used continu- ously, chemical treatment and filtering will be necessary.

Ground Coupled, Closed Loop and Plateframe Heat Exchanger Well Systems (50RHR,RVR, RHS,RVS,RDS Only) — These systems allow water temperatures from 30 to 110 F. The external loop field is divid- ed up into 2 in. polyethylene supply and return lines. Each line has valves connected in such a way that upon system start-up, each line can be isolated for flushing using only the system pumps. Locate air separation in the piping system prior to the fluid re-entering the loop field.

OPERATION

Power Up Mode — The unit will not operate until all the inputs, terminals and safety controls are checked for normal operation.

NOTE: The compressor will have a 5-minute anti-short cycle upon power up.

Units with Aquazone™ Complete C Control

STANDBY — Y and W terminals are not active in standby mode, however the O and G terminals may be active, depend- ing on the application. The compressor will be off.

COOLING — Y and O terminals are active in Cooling mode. After power up, the first call to the compressor will initiate a 5 to 80 second random start delay and a 5-minute anti-short cycle protection time delay. After both delays are complete, the compressor is energized.

NOTE: On all subsequent compressor calls the random start delay is omitted.

HEATING STAGE 1 — Terminal Y is active in heating stage 1. After power up, the first call to the compressor will initiate a 5 to 80 second random start delay and a 5-minute anti-short cycle protection time delay. After both delays are complete, the compressor is energized.

NOTE: On all subsequent compressor calls the random start delay is omitted.

HEATING STAGE 2 — To enter Stage 2 mode, terminal W is active (Y is already active). Also, the G terminal must be ac- tive or the W terminal is disregarded. The compressor relay will remain on and EH1 is immediately turned on. EH2 will turn on after 10 minutes of continual stage 2 demand.

NOTE: EH2 will not turn on (or if on, will turn off) if FP1 tem- perature is greater than 45 F and FP2 is greater than 110 F.

EMERGENCY HEAT — In emergency heat mode, terminal W is active while terminal Y is not. Terminal G must be active or the W terminal is disregarded. EH1 is immediately turned on. EH2 will turn on after 5 minutes of continual emergency heat demand.

Units with Aquazone Deluxe D Control

STANDBY/FAN ONLY — The compressor will be off. The Fan Enable, Fan Speed, and reversing valve (RV) relays will be on if inputs are present. If there is a Fan 1 demand, the Fan Enable will immediately turn on. If there is a Fan 2 demand, the Fan Enable and Fan Speed will immediately turn on.

NOTE: DIP switch 5 on S1 does not have an effect upon Fan 1 and Fan 2 outputs.

HEATING STAGE 1 — In Heating Stage 1 mode, the Fan Enable and Compressor relays are turned on immediately. Once the demand is removed, the relays are turned off and the control reverts to Standby mode. If there is a master/slave or dual compressor application, all compressor relays and related functions will operate per their associated DIP switch 2 setting on S1.

HEATING STAGE 2 — In Heating Stage 2 mode, the Fan Enable and Compressor relays are remain on. The Fan Speed relay is turned on immediately and turned off immediately once the demand is removed. The control reverts to Heating Stage 1 mode. If there is a master/slave or dual compressor application, all compressor relays and related functions will op- erate 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.

Output 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 recogni- tion 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 re- verts to Cooling Stage 1 mode. If there is a master/slave or dual

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Contents Contents Safety ConsiderationsInstallation GeneralPage Physical Data Aquazone 50RHC,RVC006-060 Units PSC FAN Motor and BlowerPhysical Data Aquazone 50RHR,RVR006-060 Units Physical Data Aquazone 50RHS,RVS,RDS015-070 UnitsPermanent Split Capacitor Airflow Configuration Code Return DischargeRight Ext Power Cond Therm Supply Return Depth Height Out Pump Supply Ensate015-024 030Back Right Right BackTypical Installation 50RHC,RHR,RHS Units Top Right TopConfiguration Top View-Left Return Configuration Left Return Left ViewIsometric ViewConfiguration Left Return Left View Air Coil Opening Isometric ViewCode Front ViewHt Return/Bottom Discharge Return/Bottom Discharge Isometric ViewTop View Front-ViewRemove Screws Side DischargeRotate Move to SideMounting the Unit 50RHC Units50RHR Units 50RHS UnitsCondensate Drain Horizontal Unit PitchCondition Acceptable Level Field Power Supply Wiring Field Control WiringLOC BMCNEC ComprTypical Aquazone Deluxe D Control Wiring RVSHpws LONTrans A50-8154 Low Voltage Field Wiring 50RHC,RVC Electrical Data RLA LRA Motor Unit Circuit FUSE/HACRFLA RLA50RHR,RVR VOLTS-PHASE Voltage Compressor FAN Total MIN MAX 50RHR,RVR Electrical DataUnit Circuit Units RLA LRA FUSE/HACRPRE-START-UP 50RDS, RHS, RVS Electrical Data50RHR,RVR Blower Performance 50RHR,RVR Rated MIN FANSpeed 50RHC,RVC Blower Performance 50RVC Blower Performance with Hot Water Reheat HWR OptionReheat External Static Pressure ESP Loss Coil Face Velocity 50RHC,RVC Rated MIN FAN50RVC Blower Performance with Wet Coil 50RHS,RVS,RDS Blower PerformanceCoil Face Velocity WET Coil Reduction 50RHS,RVS,RDS Rated FANControl Jumper Settings See Fig Field Selectable Inputs50RHS, RVS Blower Performance with HWR Coil Face 50RHS, RVS with Reheat ESP LossDIP Switch Block S2 Accessory 1 Relay Options DIP Switch Block S2 Accessory 2 Relay OptionsHumidistat/Dehumidistat Logic Deluxe D DIP Switch Settings Accessory DIP Switch Position Relay OptionsControl Accessory Relay Configurations START-UPHWR Operating Modes OutputUnit Start-Up Cooling Mode Water Temperature Change Through Heat ExchangerOperating Limits Operating Limits 50RHC,RVC UnitsUnit Start-Up Heating Mode Typical Unit Operating Pressures and TemperaturesEntering Cooling Heating Water GPM Temp F TON50RHR,RVR Coaxial Water Pressure Drop 50RHS,RVS,RDS Coaxial Water Pressure Drop50RHC,RVC Coaxial Water Pressure Drop Approximate Fluid Volume gal Per 100 Ft of Pipe Antifreeze Percentages by VolumeOperation Units with Aquazone Complete C ControlComplete C Control LED Code Fault Descriptions Units with HWR OptionSystem Test Service Aquazone Deluxe D Control LED IndicaESD Gravity Flow Method Troubleshooting Refrigerant ChargingAir Coil Fan Motor Removal Troubleshooting Fault Heating Cooling Possible Cause SolutionUnit Does Not Operate 50RHC,RVC,RHR,RHS,RVR,RVS,RDS START-UP Checklist II. START-UPHeating Cycle Analysis Cooling Cycle Analysis
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