WaterFurnace Envision2 - Manual (Page 19)

19
ENVISION 2 COMPACT - 50 HZ INSTALLATION MANUAL
5-Speed ECM Constant Torque Motors
The 5-speed ECM is a ‘Constant Torque’ ECM motor and
delivers air flow similar to a PSC but operates as efficiently as
a variable speed ECM motor. Because it is an ECM motor, the
5-speed ECM can ramp slowly up or down like the variable
speed ECM motor. There are 5 possible speed taps available
on the 5-speed ECM motor with #1 being the lowest airflow
and #5 being the highest airflow. These speed selections are
preset at the time of manufacture and are easily changed in
the field if necessary.
If more than one tap are energized at the same time, built
in logic gives precedence to the highest tap number and
allows air flow to change with G, Y1, Y2 and W signals. Each
of those 5 speeds has a specific ‘Torque’ value programmed
into the motor for each speed selection. As static pressure
increases, airflow decreases resulting in less torque on the
rotor. The motor responds only to changes in torque and
adjusts its speed accordingly.
The 5-speed ECM motor is powered by line voltage but the
motor speed is energized by 24VAC.
5-Speed ECM Benefits:
- High efficiency
- Soft start
- 5 speeds with up to 4 speeds on-line
- Built in logic allows air flow to change with G, Y1, Y2
and W signals
- Super efficient low airflow continuous blower setting (G)
5-Speed ECM Blower Motor
Model Motor Spd
Motor
Tap
T’Stat
Cnct.
Blower
Size
Motor
kW
Airflow (L/s) at External Static Pressure (Pa)
0 12.45 24.90 37.35 49.80 62.25 74.70 87.15 99.60 112.05 124.50 149.40 174.30 199.20 224.10 249.00
005
High 5
229 x 178 0.37
474 470 465 458 451 444 439 433 427 421 415 404 387 - - -
Med High 4 W 434 427 420 413 408 399 392 388 385 375 366 356 335 - - -
Med 3 406 401 396 387 380 373 366 359 352 346 340 319 283 - - -
Med Low 2 Y1 373 366 361 354 347 340 333 324 316 309 302 281 - - - -
Low 1 G 309 293 278 267 257 248 241 223 205 189 - - - - - -
006
High 5 W
229 x 178 0.37
512 507 500 493 486 479 474 467 463 455 448 437 408 385 - -
Med High 4 Y2 465 458 451 444 437 429 425 418 411 404 399 382 370 356 - -
Med 3 422 413 404 396 392 382 375 368 363 354 345 335 321 271 - -
Med Low 2 Y1 380 370 363 356 347 342 335 326 316 309 304 288 257 - - -
Low 1 G 335 323 314 307 300 290 283 276 269 250 234 224 - - - -
009
High 5 W
279 x 254 0.37
743 729 720 706 696 684 675 663 656 644 635 616 590 569 538 465
Med High 4 Y2 710 689 668 658 649 637 625 611 599 588 578 555 538 498 465
Med 3 Y1 694 668 644 621 604 592 583 573 564 550 538 512 484 420 - -
Med Low 2 687 661 635 606 590 578 569 555 543 531 522 493 465 427 - -
Low 1 G 635 609 583 545 517 479 444 432 420 382 356 - - - - -
012
High 5 W
279 x 254 0.75
913 904 899 887 875 866 854 847 842 833 826 812 793 772 750 739
Med High 4 857 843 831 819 812 802 798 788 781 772 762 746 729 710 694 675
Med 3 Y2 805 798 791 779 767 757 750 741 732 720 710 691 682 661 637 616
Med Low 2 Y1 760 748 739 729 724 710 696 689 682 673 663 639 623 611 588 559
Low 1 G 694 670 649 635 625 614 604 595 588 576 564 540 526 493 - -
015
High 5 W
279 x 254 0.75
1074 1067 1060 1048 1041 1031 1022 1015 1008 998 991 979 958 939 918 892
Med High 4 Y2 1003 991 984 977 970 960 951 942 937 927 918 901 887 864 842 831
Med 3 934 923 916 906 901 890 880 871 864 854 847 828 812 795 774 757
Med Low 2 Y1 868 857 847 838 828 821 814 805 795 786 776 762 739 727 701 663
Low 1 G 805 793 783 769 762 755 748 736 727 720 713 694 673 644 621 599
017
High 5 W
279 x 254 0.75
1163 1156 1149 1137 1130 1121 1114 1104 1095 1088 1081 1062 1045 1017 979 927
Med High 4 Y1 1069 1060 1052 1045 1041 1029 1019 1012 1005 993 984 967 953 934 911 885
Med 3 1008 998 991 984 977 967 958 949 942 932 923 904 887 873 854 831
Med Low 2 946 937 932 923 916 906 899 887 878 866 857 842 824 812 786 767
Low 1 G 852 840 831 824 819 807 795 788 783 772 762 743 729 713 694 656
6/26/12
CAUTION: Disconnect all power before
performing this operation.
Setting Blower Speed - 5-Speed ECM
5-speed ECM blower motors have five (5) speeds of which
three (3) are selectable on single speed and four (4) are
selectable on dual capacity.
5-Speed ECM Motor Connections - Single Speed
5-Speed ECM Motor Connections - Dual Capacity
L G N
C
High Voltage
Connections
4.76 mm
1 2 3 4 5 G - Blue
Y1 - Red
AUX - Gray
C - Black
L - Orange
G - Green N - Brown
Low Voltage
Connections 6.35 mm
L G N
C
1 2 3 4 5
AUX - Gray G - Blue
Y1 - Red Y2 - Tan
C - Black
L - Orange
G - Green N - Brown
High Voltage
Connections
4.76 mm
Low Voltage
Connections 6.35 mm
Blower Performance Data