Carrier 50VQP084-300 Units with Aquazone Complete C Control, Units with Aquazone Deluxe D Control

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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, de- pending 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 active or the W terminal is disregarded. The compressor re- lay 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 temperature is greater than 7.2 C and FP2 is greater than 48.9 C.

EMERGENCY HEAT — In emergency heat mode, termi- nal 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 imme- diately 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 operate per their associated DIP switch 2 set- ting 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 7.2 C and FP2 (when shorted) is greater than 48.9 C 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 Emergen- cy Heat demand, EH2 will turn on after 5 minutes. Fan En- able 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 immediate- ly. If configured as stage 2 (DIP switch set to OFF) then the compressor and fan will not turn on until there is a stage 2 demand. The Fan Enable and compressor relays are turned off immediately when the Cooling Stage 1 demand is re- moved. The control reverts to Standby mode. The RV relay remains on until there is a heating demand. If there is a mas- ter/slave or dual compressor application, all compressor re- lays and related functions 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 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 be- comes active and is recognized as a call for heating and the control will immediately go into a Heating Stage 1 mode. With an additional 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.

COMPLETE C AND DELUXE D BOARD

SYSTEM TEST

System testing provides the ability to check the control operation. The control enters a 20-minute Test mode by mo- mentarily shorting the test pins. All time delays are in- creased 15 times.

Test Mode — To enter Test mode on Complete C or De- luxe D controls, cycle the power 3 times within 60 seconds. The LED (light-emitting diode) will flash a code representing the last fault when entering the Test mode. The alarm relay will also power on and off during Test mode. See Tables 20-22. To exit Test mode, short the terminals for 3 seconds or cycle the power 3 times within 60 seconds.

NOTE: The Deluxe D control has a flashing code and alarm relay cycling code that will both have the same numerical label. For example, flashing code 1 will have an alarm relay cycling code 1. Code 1 indicates the control has not faulted since the last power off to power on sequence.

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Contents Safety Considerations ContentsGeneral Installation406 50VQP Unit Physical Data442 782A50-8436 50VQP084-150 Unit DimensionsA50-8437 50VQP168-300 Unit DimensionsA50-8467 A50-8466A50-8468 A50-8470 A50-8469A50-8471 A50-8472A50-8477 A50-8476A50-8478 A50-8479A50-8485 A50-8482A50-8483 A50-8484Trap Condensate Drain A50-8486Field Power Supply Wiring Water Quality Guidelines 50VQP084-168 Unit with Complete C Control Typical A50-843850VQP084-168 with Deluxe D Control Typical A50-8439J6J5 AL1J1 J8 50VQP Unit Electrical Data Standard Unit 50VQP Unit Electrical Data Dual Point Power UnitPRE-START-UP Field Control WiringA50- 6268tf.tif A50-8441Page 50VQP084 Blower Performance Data 50VQP096 Blower Performance Data 421 459 499 533 569 600 633 663 691 722 749 412 455 492 526 563 595 628 658 687 718 745441 478 513 549 581 614 644 672 703 730 759 456 495 529 561 595 625 656 685 712 741 76750VQP120 Blower Performance Data 526 561 592 621 649 679 706 732 758 785 809 833 857 882 511 544 578 608 637 668 695 722 748 776 800 825 849 874 897544 575 605 633 661 691 717 742 767 794 818 842 867 890 555 589 618 646 676 702 728 753 779 803 827 850 875 89850VQP150 Blower Performance Data 598 623 656 687 715 744 772 799 825 850 872 896 919 942 963 581 613 646 678 706 735 763 791 817 842 867 889 912 935 958605 637 666 697 727 755 783 809 835 858 882 905 928 951 973 618 647 678 708 738 766 793 819 844 867 891 914 937 959 98050VQP168 Blower Performance Data 50VQP192 Blower Performance Data BkW 3020.8 Sheave/Mtr 50VQP240 Blower Performance Data 605 633 660 689 714 739 763 790 813 836 858 882 904 50VQP300 Blower Performance Data 553 588 620 653 685 715 744 771 796 822 847 872 896 538 574 609 640 673 703 733 761 788 812 838 863 888 912568 602 633 666 697 726 755 782 806 832 857 881 904 581 613 646 678 706 735 763 791 817 842 867 889Deluxe D Control Jumper Settings See Fig Complete C Control Jumper Settings See FigField Selectable Inputs DIP Switch Block S2 Accessory 2 Relay Options DIP Switch Block S2 Accessory 1 Relay OptionsSTART-UP Operating LimitsUnit Start-Up Heating Mode Unit Start-Up Cooling ModeWater Temperature Change Through Heat Exchanger 50VQP Unit Operating LimitsAntifreeze Percentages by Volume Approximate Fluid Volume L Per 30 M of PipeOperation Coaxial Water Pressure DropUnits with Aquazone Deluxe D Control Units with Aquazone Complete C ControlComplete C and Deluxe D Board System Test Complete C Control LED Code Fault Descriptions Aquazone Deluxe D Control LED Indica ServiceRefrigerant Charging TroubleshootingAir Coil Fan Motor Removal FP1 and FP2 Thermistor Location A50-8163Troubleshooting Unit Does Not Operate Page Page Catalog No Form 50VQP-C1SI 11-10 Copyright 2010 Carrier CorporationII. START-UP 50VQP START-UP ChecklistBook Catalog No Form 62AQ-1SI Pg CL-1 Replaces New TabCooling Cycle Analysis Heating Cycle Analysis
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