Armstrong World Industries EHU-701, EHU-700 Series, EHU-703 Installation, Mounting the Humidifier

INSTALLATION

4)MOUNTING THE HUMIDIFIER

MODEL EHU-701:Making sure the unit is level, hold it against the mounting surface and mark the hole pattern. Attach the units to studs or other sturdy structure with the two 3/8"× 1½" lag screws provided.

MODELS EHU-703 & 704: Making sure the mounting bracket is level, attach it to studs or other sturdy structure with the two 3/8"× 1½" lag screws provided. Hang the humidifier on the mounting bracket.

5)ELECTRICAL SERVICE WIRING

Refer to the nameplate on the unit for recommended fuse size. Table 6-1 relates the fuse size to the appropriate branch size. A complete wiring diagram shown in Figure 12-1 is located inside the door of the humidifier.

IMPORTANT: Please observe the following:

a.Make certain there is a manually operated interlocking circuit breaker or safety switch (not furnished) in the electric service ACCESSIBLE TO AND WITHIN SIGHT OF THE HUMIDIFIER.

b.USE ONLY WIRE WITH COPPER CONDUCTORS RATED 90°C OR HIGHER FOR HIGH VOLTAGE AND GROUNDING.

c.Pass high voltage ground lead through provided ferrite core (AN) between where it enters the cabinet and where it connects to ground lug.

d.Ground the humidifier cabinet; a ground lug is provided in the wiring compartment.

Table 6-1. Series EHU-700 Capacities and Electrical Ratings

Nom		Recommended											Output Per Hour @ Voltage Shown
	Current	Branch Circuit					Single Phase											Three Phase
Amp
	Module		Circuit	120		208			240		277		208		240		3461		380			4152		480		600
Rating		Wire
			Breaker	lb	kg	lb		kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg		lb	kg	lb	kg	lb	kg
								EHU-701 Humidifier (One Small Steam Generator)
7	CM 7	14	15	2	0.9	4		1.8	5	2.3	6	2.7	7	3.2	8	3.6	12	5.4	13	6		15	6.8	17	7.7	21	9.5
12	CM 12	14	15	4	1.8	7		3.2	8	3.6	10	4.5	12	5.4	14	6.3	21	9.5	23	10.4		25	11.3	29	13.2	36	16.3
14	CM 14	12	20	5	2.3	8		3.6	10	4.5	11	5	15	6.8	17	7.7	24	10.9	27	12.2		29	13.2	34	15.4	42	19
16	CM 16	12	20	6	2.7	10		4.5	11	5	13	6	17	7.7	19	8.6	28	12.7	30	13.6		33	15	38	17.2	—	—
20	CM 20	10	25	—	—	12		5.4	14	6.3	16	7.3	21	9.5	24	10.9	35	15.9	38	17.2		42	19	—	—	—	—
24	CM 24	10	30	—	—	14		6.3	17	7.7	19	8.6	25	11.3	29	13.2	42	19	—	—		—	—	—	—	—	—
32	CM 32	8	40	—	—	19		8.6	22	10	26	11.8	33	15	38	17.2	—	—	—	—		—	—	—	—	—	—
40	CM 40	8	50	—	—	24		10.9	28	12.7	32	14.5	42	19	—	—	—	—	—	—	—		—	—	—	—	—
								EHU-703 Humidifier (One Large Steam Generator)
20	CM 20	10	25	—	—	12		5.4	14	6.3	16	7.3	21	9.5	24	10.9	35	15.9	38	17.2		42	19	48	21.8	60	27.2
24	CM 24	10	30	—	—	14		6.3	17	7.7	19	8.6	25	11.3	29	13.2	42	19	46	20.9		50	22.7	58	26.3	72	32.7
32	CM 32	8	40	—	—	19		8.6	22	10	26	11.8	33	15	38	17.2	55	24.9	61	27.7		66	29.9	77	34.9	96	43.5
40	CM 40	8	50	—	—	24		10.9	28	12.7	32	14.5	42	19	48	21.8	69	31.3	76	34.5		83	37.6	96	43.5	120	54.4
48	CM 48	6	60	—	—	29		13.2	33	15	39	17.7	50	22.7	58	26.3	83	37.6	91	41.3		100	45.4	115	52.2	—	—
								EHU-704 Humidifier (Two Large Steam Generators)
40	CM 20	8	50	—	—	24		10.9	28	12.7	32	14.5	42	19	48	21.8	69	31.3	76	34.5		83	37.6	96	43.5	120	54.4
48	CM 24	6	60	—	—	29		13.2	33	15	39	17.7	50	22.7	58	26.3	83	37.6	91	41.3		100	45.4	115	52.2	144	65.3
64	CM 32	4	80	—	—	39		17.7	45	20.4	51	23.1	67	30.4	77	34.9	111	50.3	122	55.3		133	60.3	154	69.8	192	87.1
80	CM 40	3	100	—	—	48		21.8	56	25.4	64	29	83	37.6	96	43.5	138	62.6	152	68.9		166	75.3	192	87.1	240	108.8
96	CM 48	2	125	—	—	58		26.3	67	30.4	77	34.9	100	45.4	115	52.2	166	75.3	182	82.5		199	90.2	230	104.3	—	—
NOTES:	1 346 Volt units require 346/200 volt 4-wire system.

2415 volt require 415/240 volt 4-wire system.

KW rating = humidiity output (lbs/hr) x 0.345 (for energy calculations only; not for branch circuit sizing).

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