Aprilaire 700A Service Manual

SERVICE MANUALfor HUMIDIFIER25648 RP 1780 6/8/04 11:20 AM Page 1

- 9 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODEL 440)MODEL 440Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.25648 RP 1780

- 10 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODELS 550, 550A, 558 / 560, 560A, 568)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PA

- 11 -MODEL 400EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODEL 400)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.25648 RP 1780

- 12 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODEL 600)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.MODEL 60025648 RP 1780

- 13 -INDIVIDUAL UNIT SERVICE—MODELS 760, 760A, 768 & 700WARNING: 1. 120 VOLTS may cause serious injury from electrical shock. Disconnectpower and

- 14 -The motor will operate if power is connected to the unit, the furnace blower is runningand the humidistat switch is closed. To check the fan mot

- 15 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODELS 760 760A 768 & 700)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.910

- 16 -INDIVIDUAL UNIT SERVICE—MODELS 445, 445A & 448WARNING: 1. 120 VOLTS may cause serious injury from electrical shock. Disconnectpower and shut

- 17 -3. ELECTRICAL COMPONENTS — All components should be tested in place makingsure all electrical connections are secure and there are no breaks in

- 18 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODELS 445, 445A & 448)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.20A o

GENERAL SERVICE PAGELack of Humidity …………………………………………………………2Excess Humidity …………………………………………………………4Leaking Water ……………………………………………………………4Noise …………………

- 19-2. ELECTRICAL COMPONENTS — All components should be tested in place beforeremoval, making sure all electrical connections are secure and there ar

- 20 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODEL 350)MODEL 350Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.25648 RP 1780

- 21 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODEL 360)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.MODEL 36025648 RP 1780

- 22 -INDIVIDUAL UNIT SERVICE—MODELS 110 & 112WARNING: 1. 120 VOLTS may cause serious injury from electrical shock. Disconnectpower and shut off w

- 23 -II. EXCESS HUMIDITY — See Page 4.III. LEAKING WATER — See Page 4.The Models 110 and 112 are provided with a cover over the distribution tray. Th

-24 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODELS 110 & 112)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.MODELS 110-11

For the ultimate in humidity control,the Aprilaire Humidifier Control isavailable. Installed out of sight, itsexclusive microprocessor technology auto

®P.O. BOX 1467 • MADISON, WI 53701-1467Call toll-free 1-800-334-6011 • FAX 608/257-4357FORM NO. 1780 3.04.04DP10006354Printed in U.S.A.25648 RP 1780

- 2 -GENERAL SERVICEWARNING: 120 VOLTS may cause serious injury from electrical shock on Model 110, 112,350, 360, 445, 760A and 760 humidifiers. Disco

- 3 -Chart A Model Model Model Model ModelSquare Feet Capacity * 760(1)/760A(1)/768(1)/700(1)110(1)112(1)350(2)/360(2)Loose House 1,050 800 1,150 1,10

- 4 -II. EXCESS HUMIDITYHumidity Control Check —Check Wiring — A closed short in the low voltage control circuit leading to the humidistat maycause th

- 5 -EXAMPLE: The supply water line fills the quart jar in 2 min. 30 sec. or 150 sec. 7,509divided by 150 = 50.1 lbs./hr. The quart jar was filled wit

- 6 -II. EXCESS HUMIDITY — See Page 4.CAUTION: 1. Sudden operation may cause personal injury or property damage. Turnthe Automatic Humidifier Control

- 7 -III. LEAKING WATER — See Page 4.The Models 220 and 224 are provided with a cover over the distribution tray. These coversare quite effective in m

- 8 -EXPLODED RP APRILAIRE PLENUM HUMIDIFIER(MODELS 220 & 224)Instructions for Ordering PartsSpecify:MODEL NO. — PART NAME — PART NO.MODELS 220-22