Instruction/ maintenance manual of the product W7751H Honeywell
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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.
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
An important point after buying a device Honeywell W7751H (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell W7751H yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell W7751H - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell W7751H you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell W7751H will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell W7751H, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell W7751H.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell W7751H. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell W7751H along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
