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®
WEATHERMAKER
48/50AJ,AK,AW,AY,A2,A3,A4,A5020-060
Single Package Large Rooftop Units
with COMFORTLINK™ Version 5.x Controls
Controls, Start-Up, Operation,
Service and Troubleshooting
CONTENTS
Page Page
Unit Configuration Submenu . . . . . . . . . . . . . . . . . . . . . . . 35
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .2
Cooling Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . .
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CONTENTS (cont) SAFETY CONSIDERATIONS Installation and servicing of air-conditioning equipment can Page be hazardous due to system pressure and electrical compo- Indoor Air Quality Control. . . . . . . . . . . . . . . . . . . . . . . . . . 67 nents. Only trained and qualified service personnel should in- •OPERATION • SETTING UP THE SYSTEM stall, repair, or service air-conditioning equipment. Untrained • PRE-OCCUPANCY PURGE personnel can perform the basic maintenance functions of re- Dehumidifica
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A scheduling function, programmed by the user, controls GENERAL the unit occupied/unoccupied schedule. Up to 8 different This book contains Start-Up, Controls Operation, Trouble- schedules can be programmed. shooting and Service information for the 48/50A Series The controls also allow the service person to operate a quick rooftop units. See Table 1. These units are equipped with test so that all the controlled components can be checked for ComfortLink™ controls. proper operation. Use this guide
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Co m f o r t Lin k Alarm Status N A V I G A T O R 1 2 . 58 5 4 . 6 F 4 4.1 F 4 4 . 0 F M O D E ES C ENTER Run Status Service Test Temperatures Pressures Setpoints Inputs Outputs Configuration Time Clock Operating Modes Alarms TIME EWT LWT SETP System diagnostics are enhanced by the use of multiple marquee, the user can access a built-in test routine that can be external sensors for air temperatures, air pressures, refrigerant used at start-up commissioning to diagnose operational prob- temperatu
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Items in the Configuration and Service Test modes are password protected. The display will flash PASS and WORD when required. Use the and arrow keys to enter the ENTER four digits of the password. The default password is 1111. Pressing the ESCAPE and keys simultaneously ENTER will scroll an expanded text description across the display indi- cating the full meaning of each display point. Pressing the ESCAPE and keys when the display is blank ENTER (MODE LED level) will return the display to it
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Table 2 — Scrolling Marquee Menu Display Structure (ComfortLink™ Display Modes) RUN SERVICE TIME OPERATING TEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATION ALARMS STATUS TEST CLOCK MODES Auto View of Service Test Mode Air Air Pressures Occupied Heat General Inputs Fans Unit Time of Day System Currently Run Status (TEST) Temperatures (AIR.P) Setpoint (GEN.I) (FANS) Configuration (TIME) Mode Active (VIEW) (AIR.T) (OHSP) (UNIT) (SYS.M) Alarms (CURR) Software Refri
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START-UP Controls — Use the following steps for the controls: IMPORTANT: The unit is shipped with the unit control IMPORTANT: Do not attempt to start unit, even disabled. To enable the control, set Local Machine Disable momentarily, until all items on the Start-Up Checklist (Service Test STOP) to No. and the following steps have been completed. 1. Set any control configurations that are required (field- installed accessories, etc.). The unit is factory configured Unit Preparation — Check that u
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Table 3 — Fan Performance — 48AJ,AK020,025 and 48A2,A3020 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 (CFM) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 4,000 328 0.62 406 0.84 472 1.07 529 1.30 580 1.54 626 1.78 668 2.02 708 2.27 745 2.51 780 2.76 5,000 369 0.97 439 1.19 500 1.43 554 1.69 604 1.95 650 2.21 692 2.48 731 2.74 769 3.01 804 3.28 6,000 415 1.43 477 1.65 533 1.90 584 2.17 631
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Table 5 — Fan Performance — 48AJ,AK,A2,A3035 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.20.4 0.60.8 1.01.2 1.41.6 1.8 2.0 (Cfm) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 7,000 534 2.46 584 2.80 630 3.13 674 3.48 716 3.82 756 4.16 793 4.50 829 4.83 863 5.17 896 5.49 8,000 590 3.27 635 3.63 677 3.99 718 4.35 757 4.72 794 5.08 830 5.45 864 5.81 897 6.18 929 6.54 9,000 646 4.23 687 4.62 726 5.00 764
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Table 7 — Fan Performance — 48AJ,AK,A2,A3040 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.20.4 0.60.8 1.01.2 1.41.6 1.82.0 (Cfm) RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp Rpm Bhp RpmBhp 8,000 502 2.90 550 3.30 596 3.71 639 4.12 680 4.54 720 4.97 759 5.40 796 5.85 832 6.31 867 6.77 9,000 552 3.81 595 4.24 637 4.67 677 5.11 715 5.55 752 6.00 788 6.45 823 6.92 857 7.39 890 7.87 10,000 602 4.89 642 5.34 680 5.80 717 6.26 752 6.73 787 7.20 821 7.67 854 8.16 886 8.64 917 9
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Table 9 — Fan Performance — 48AJ,AK,A2,A3050 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 (Cfm) RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp 8,000 512 2.98 560 3.38 604 3.79 647 4.20 688 4.62 728 5.05 766 5.49 803 5.94 839 6.40 874 6.86 9,000 561 3.90 604 4.33 645 4.77 685 5.20 723 5.65 760 6.10 796 6.55 831 7.02 864 7.49 897 7.97 10,000 611 5.00 651 5.45 689 5.91 725 6.37 761 6.84 795 7.31 829 7.79 861 8.27 893 8.76 9
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Table 11 — Fan Performance — 48AJ,AK,A2,A3060 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 (Cfm) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 12,000 476 4.33 534 5.04 585 5.78 632 6.56 674 7.39 714 8.24 751 9.12 786 10.02 819 10.93 851 11.85 14,000 536 6.19 588 6.96 636 7.74 680 8.56 720 9.41 758 10.30 793 11.21 827 12.15 859 13.11 890 14.08 15,000 566 7.28 617 8.09 662 8.90 704 9.73 744 10.59 781 11.50 816 1
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Table 13 — Fan Performance — 50AJ,AK027,030 and 50A2,A3025-030 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 (CFM) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 4,000 314 0.54 394 0.72 460 0.89 517 1.05 569 1.22 615 1.39 658 1.55 697 1.72 734 1.88 769 2.05 5,000 352 0.85 422 1.03 484 1.22 540 1.42 590 1.61 636 1.79 678 1.98 718 2.17 755 2.35 791 2.54 6,000 394 1.26 456 1.45 513 1.65 565 1.86 613 2
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Table 15 — Fan Performance — 50AJ,AK036 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 (Cfm) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 7,000 431 1.99 484 2.35 534 2.72 580 3.08 625 3.46 8,000 475 2.69 523 3.08 569 3.47 612 3.86 653 4.26 9,000 521 3.53 565 3.94 606 4.36 646 4.78 684 5.20 10,000 568 4.52 608 4.96 646 5.40 683 5.84 719 6.29 11,000 615 5.68 652 6.14 687 6.60 722 7.07 755 7.55 12,000 663 7.01 697 7.49 730 7.98 762 8.47 794 8.97 13,000 712 8.53 743 9.03 77
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Table 17 — Fan Performance — 50AJ,AK041 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 (Cfm) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 8,000 475 2.69 523 3.08 569 3.47 612 3.86 653 4.26 9,000 521 3.53 565 3.94 606 4.36 646 4.78 684 5.20 10,000 568 4.52 608 4.96 646 5.40 683 5.84 719 6.29 11,000 615 5.68 652 6.14 687 6.60 722 7.07 755 7.55 12,000 663 7.01 697 7.49 730 7.98 762 8.47 794 8.97 13,000 712 8.53 743 9.03 774 9.54 804 10.05 834 10.57 14,000 760 10.24 790 10.
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Table 19 — Fan Performance — 50AJ,AK051 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 (Cfm) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 10,000 397 2.69 461 3.31 516 3.96 564 4.63 608 5.33 12,000 450 4.03 509 4.71 560 5.41 605 6.12 647 6.86 13,000 477 4.83 533 5.55 582 6.27 627 7.01 668 7.77 14,000 505 5.74 558 6.49 606 7.24 649 8.01 689 8.79 15,000 533 6.75 584 7.53 630 8.32 672 9.11 711 9.91 16,000 561 7.88 610 8.68 655 9.50 696 10.32 734 11.14 17,000 590 9.12 637 9.
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Table 21 — Fan Performance — 48AW,AY020,025 and 48A4,A5020 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 (CFM) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 4,000 339 0.71 414 0.97 478 1.25 534 1.54 585 1.84 631 2.14 674 2.44 714 2.75 751 3.06 787 3.37 5,000 384 1.10 452 1.37 510 1.66 563 1.96 611 2.28 656 2.60 698 2.93 738 3.27 775 3.60 811 3.94 6,000 433 1.61 494 1.89 548 2.1
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Table 23 — Fan Performance — 48AW,AY,A4,A5035 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.20.4 0.60.8 1.01.2 1.41.6 1.82.0 (Cfm) RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp Rpm Bhp RpmBhp 7,000 553 2.59 602 2.92 648 3.26 691 3.61 732 3.95 770 4.29 807 4.63 842 4.96 875 5.29 907 5.62 8,000 612 3.45 656 3.81 698 4.17 738 4.53 776 4.90 812 5.27 847 5.63 881 6.00 913 6.36 944 6.72 9,000 672 4.47 712 4.86 750 5.24 787 5.62 8
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Table 25 — Fan Performance — 48AW,AY,A4,A5040 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.20.4 0.60.8 1.01.2 1.41.6 1.8 2.0 (Cfm) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 8,000 526 3.10 573 3.50 617 3.91 660 4.33 700 4.75 740 5.18 778 5.62 814 6.07 850 6.53 884 7.00 9,000 579 4.08 621 4.51 662 4.95 701 5.39 738 5.83 775 6.28 810 6.74 845 7.21 878 7.69 911 8.17 10,000 633 5.24 671 5.70 709 6.16 744 6.62 779 7.09 813 7.57 846 8.05 879 8.53 910
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Table 27 — Fan Performance — 48AW,AY,A4,A5050 Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 (Cfm) Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 8,000 536 3.18 582 3.58 626 3.99 668 4.41 708 4.83 747 5.27 785 5.71 821 6.16 857 6.63 891 7.09 9,000 588 4.17 630 4.60 670 5.04 709 5.48 746 5.93 782 6.38 818 6.84 852 7.31 885 7.79 918 8.28 10,000 642 5.35 680 5.80 717 6.27 753 6.73 787 7.20 821 7.68 854 8.16 886 8.65
