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Honeywell W7751H manual

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Table of contents for the manual

  • Page 1

    INSTALLATION INSTRUCTIONS 95-7553-04 Excel 10 W7751H Smart V A V Actuator BEFORE INSTALLATION The W7751H Smart V A V Actuator is a factory-combined Excel 10 V ariable Air Volume (V A V) Bo x Controller an d an ML6174 Direct-Coupl ed Actuator wi th De-clutch me chanism. The actuator/controller assembly is field moun ted to the V A V box damper shaft[...]

  • Page 2

    EXCEL 10 W7751H SMART V A V ACTUATOR 95-7553—04 2 Fig. 2. W7751H mounting dimensions in in. (mm). The W7751H assembly is field mounted to the V A V box damper shaft, the same as used for a typical actuator . T he actuator on the W7751H open s or closes a damper by driving the damper shaft in either t he counterclockwise (CCW) or clockwise (CW) di[...]

  • Page 3

    EXCEL 10 W7751H SMART V A V ACTUATOR 3 95-7553—04 Fig. 3. Cover removal an d mounting tab/terminal block access. Fig. 4. Mounting W7 751H to V A V box damper housing when actua tor is not p arallel to V A V box damper ho using. Before mounting the W7751H onto the V A V box dampe r shaft, determine the following: 1. The damper shaft diameter , 3/8[...]

  • Page 4

    EXCEL 10 W7751H SMART V A V ACTUATOR 95-7553—04 4 Fig. 6. Use Damper Shaft Adapter for 3/8 in. (10 mm) diameter roun d or square dampe r shaft s. The W7751H is shipped with the actuator rotated in the ful ly clockwise (CW) position. The i nstallation procedure varies depending on the damper direction and angle: 1. If the damper rotates clockwise [...]

  • Page 5

    EXCEL 10 W7751H SMART V A V ACTUATOR 5 95-7553—04 IMPORT ANT The minimum position set scr ew on the actuator is not available on the W7751H devi ce. Fig. 8. Lif ting a range stop pin out of it s slot. Piping Air flow Pickup Connect the air flow pi ckup to the two connectors on the controller of the W7751H. See Fig. 9. Fig. 9. Sma rt V A V Actuato[...]

  • Page 6

    EXCEL 10 W7751H SMART V A V ACTUATOR 95-7553—04 6 Fig. 10. Power wiring for mul tiple controllers. Fig. 1 1. 201052 Auxiliary Switch mounted on W775 1H. NOTES: — If a range stop pin is used, it must be pointing inward toward the shaft (see Fig. 1 1) to allow clearance for the auxiliary switch. — Each switch is independently adjustable in two-[...]

  • Page 7

    EXCEL 10 W7751H SMART V A V ACTUATOR 7 95-7553—04 Fig. 14. Auxiliary switch cam adju stment. NOTE: For 2 or 3 switch models, cams align with th eir respective switches and are individually set using the same p rocedure described a bove. 6. Ensure switch activation at the desired degree of stroke by commanding the actuator to both fully open and f[...]

  • Page 8

    EXCEL 10 W7751H SMART V A V ACTUATOR 95-7553—04 8 Fig. 16. W7751H modulati ng reheat valve wiring diagram. (For Note 2 instructi ons, refer t o Fig. 15.) Fig. 17. W7751 H 2-stage reheat wiring diagram. (For Note 2 instructions, refer to Fig. 15.) 12 345 6 78 9 1 0 11 12 EARTH GROUND 24 V AC COM OUT 1 OUT 2 E-BUS COMM OUT COMM IN 24 V AC NOTE: LOA[...]

  • Page 9

    EXCEL 10 W7751H SMART V A V ACTUATOR 9 95-7553—04 Fig. 18. W7751H di scharge air sensing (For Note 2 instru ctio ns, refe r to Fig. 15.) CHECKOUT W7751H Checkout Step 1. Wiring Connections Inspect all wiring connections at the W7751H and the T7770 terminals, and verify compliance with in stallation diagrams. If any wiring changes are required, fi[...]

  • Page 10

    EXCEL 10 W7751H SMART V A V ACTUATOR 95-7553—04 1 0 NOTE: Du ring item 2, the occupancy ov erride state of the controller change s based on how l ong the bypass/override button is depressed. For example, if the button is pressed fo r 6 sec., the node sends the Service Pin Message , AND the node enters Continuous Un occ mode. T o clear Continuous [...]

  • Page 11

    EXCEL 10 W7751H SMART V A V ACTUATOR 11 95-7553—04 Fig. 20. W7751H to PWM V alve Actu ator and series or parallel fan. Fig. 21. W7 751H to pneuma tic transducer . 12 345 6 78 9 1 0 11 12 24 V AC COM OUT 1 OUT 2 E-BUS 24 V AC W7751H M10529 WALL MODULE EARTH GND SENSOR BYP ASS LED NOT EARTH GROUND TRIAC EQUIV ALENT CIRCUIT 2 1 1 2 MAKE SURE ALL TRA[...]

  • Page 12

    EXCEL 10 W7751H SMART V A V ACTUATOR Automation and Co ntrol Solutions Honeywell Internationa l Inc. Honeywell Limited-Hon eywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered T rademark © 2008 Honeywell Internationa l Inc. 95-7553—04 M.S. Rev . 03-08[...]