Honeywell W7750A Performance Specifications, Power, Special Note for the W7750B,C Unit

EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER

2-1/8

(54)

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

NEYWORK

24

24

DO

VAC

NOT

NOT

NOT

NOT

NOT

WI

W2

Y1

Y2

G

Rc

Rh

VAC

COM

USED

USED

USED

USED

USED

5-5/8

(143)

E	LED	BYPASS	SNSR	GND	SET PT	AI-1	GND	DI-1	GND	GND	DI-2	NOT	LONWORKS		LON	3-1/16
GND						OHM						USED		BUS	JACK
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	J3	(77)
					5-3/16 (132)
									6 (152)

M10098B

Fig. 4. W7750A construction in in. (mm).

PERFORMANCE SPECIFICATIONS

Power:

24 Vac with a minimum of 20 Vac and a maximum of 30 Vac at either 50 or 60 Hz. The W7750A power consumption is 6 VA maximum at 50 or 60 Hz. The W7750B,C power consumption is 12 VA maximum at 50 or 60 Hz.The W7750A,B,C is a NEC Class 2 rated device. This listing imposes limits on the amount of power the product can consume or directly control to a total of 100 VA.

Special Note for the W7750B,C Unit:

The individual Triac outputs incorporate an internal common connection with the input power transformer. The Triacs provide a switched path from the hot side (R) of the transformer through the load to the common of the transformer. The W7750B,C Controller design must use the same power transformer for any loads connected to that controller; see Fig. 30.

Each individual Triac is rated 1A at 30 Vac maximum. Under all operating conditions, the maximum load/source power budget for the W7750B,C Controller is 100 VA. Actual allowable Triac current is 500 mA MAX.

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