Honeywell EXCEL 10 W7751H Manual de usuario descargar pdf

INSTALLATION INSTRUCTIONS

95-7553-04

Excel 10 W7751H Smart VAV Actuator

BEFORE INSTALLATION

The W7751H Smart VAV Actuator is a factory-combined

Excel 10 Variable Air Volume (VAV) Box Controller and an

ML6174 Direct-Coupled Actuator with De-clutch mechanism.

The actuator/controller assembly is field mounted to the VAV

box damper shaft similar to the mounting of a standard

actuator, and the controller wiring is terminated to the screw

terminals that are located under a snap-on cover. See Fig. 1.

The Smart VAV Actuator is a Free Topology Transceiver (FTT)

ONMARK® compliant controller. The W7751H2025 is for

smoke control use.

The ML6174 Direct-Coupled Actuator with De-clutch

mechanism (see Fig. 2 for location) allows the installer to

manually open or close the VAV box damper connected to the

W7751H without power or software tool to command it.

The controller in the W7751H contains a Microbridge flow-

through pressure sensor and communicates via the

78 kilobaud Echelon® L

ONWORKS® Bus Network.

Triac output loads must draw a minimum current of 25 mA at

24 Vac, 60 Hz nominal. Triac maximum current rating: 77 mA.

The actuator on the W7751H mounts directly onto the VAV

box damper shaft and has up to 70 lb-in. torque (8 Nm), 90

degree stroke, and 90 second timing at 60 Hz.

The actuator on the W7751H can accommodate the optional

field-installed auxiliary switches.

NOTE: Mounting thermostat/sensor greater than 20 ft from

the W7751H2025 requires 14506944-001 Transient

Protectors. They must be installed on the thermostat/

sensor leads from the T7770C pins 3, 4, 5, 6, and 7.

INSTALLATION

Horizontally mount the W7751H on the damper shaft and

allow clearance for wiring, servicing and module removal.

Avoid mounting the W7751H in areas where acid fumes or

other deteriorating vapors can attack the metal parts of the

actuator, or in areas where escaping gas or other explosive

vapors are present. See Fig. 2 for mounting dimensions.

Fig. 1. Excel 10 Smart VAV Actuator.

IMPORTANT

The assembly is intended only for horizontal shaft

mounting, to assure proper heat dissipation from the

controller housing. The Smart VAV Actuator must not

be mounted with the controller at the top.

M19924

CCW

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1 - INSTALLATION

INSTALLATION INSTRUCTIONS95-7553-04Excel 10 W7751H Smart VAV ActuatorBEFORE INSTALLATIONThe W7751H Smart VAV Actuator is a factory-combined Excel 10 V

Pagina 2 - 95-7553—04 2

EXCEL 10 W7751H SMART VAV ACTUATOR95-7553—04 10NOTE: During item 2, the occupancy override state of the controller changes based on how long the bypas

Pagina 3 - (1/32 IN.)

EXCEL 10 W7751H SMART VAV ACTUATOR11 95-7553—04Fig. 20. W7751H to PWM Valve Actuator and series or parallel fan.Fig. 21. W7751H to pneumatic transduce

Pagina 4 - 95-7553—04 4

EXCEL 10 W7751H SMART VAV ACTUATORAutomation and Control SolutionsHoneywell International Inc. Honeywell Limited-Honeywell Limitée1985 Douglas Drive N

Pagina 5 - Auxiliary Switches

EXCEL 10 W7751H SMART VAV ACTUATOR95-7553—04 2Fig. 2. W7751H mounting dimensions in in. (mm).The W7751H assembly is field mounted to the VAV box dampe

Pagina 6 - 95-7553—04 6

EXCEL 10 W7751H SMART VAV ACTUATOR3 95-7553—04Fig. 3. Cover removal and mounting tab/terminal block access.Fig. 4. Mounting W7751H to VAV box damper h

Pagina 7 - Wiring Details

EXCEL 10 W7751H SMART VAV ACTUATOR95-7553—04 4Fig. 6. Use Damper Shaft Adapter for 3/8 in. (10 mm) diameter round or square damper shafts.The W7751H i

Pagina 8 - 95-7553—04 8

EXCEL 10 W7751H SMART VAV ACTUATOR5 95-7553—04IMPORTANTThe minimum position set screw on the actuator is not available on the W7751H device.Fig. 8. Li

Pagina 9 - CHECKOUT

EXCEL 10 W7751H SMART VAV ACTUATOR95-7553—04 6Fig. 10. Power wiring for multiple controllers.Fig. 11. 201052 Auxiliary Switch mounted on W7751H.NOTES:

Pagina 10 - CONFIGURATION DIP SWITCHES

EXCEL 10 W7751H SMART VAV ACTUATOR7 95-7553—04Fig. 14. Auxiliary switch cam adjustment.NOTE: For 2 or 3 switch models, cams align with their respectiv

Pagina 11 - 11 95-7553—04

EXCEL 10 W7751H SMART VAV ACTUATOR95-7553—04 8Fig. 16. W7751H modulating reheat valve wiring diagram. (For Note 2 instructions, refer to Fig. 15.)Fig.

Pagina 12 - W7751H Actuator Checkout

EXCEL 10 W7751H SMART VAV ACTUATOR9 95-7553—04Fig. 18. W7751H discharge air sensing(For Note 2 instructions, refer to Fig. 15.)CHECKOUTW7751H Checkout

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