Humidifiers Owner’s Manual For Models 350, 360, 400, 500, 600 & 700 Includes Safety & Operating Instructions and Warranty Information READ AND SAVE THESE INSTRUCTIONS
TABLE OF CONTENTS Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Operating Instructions – Models 400, 600 & 700 • Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 • Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Operating Instructions – Models 350, 360 & 500 . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS PRINCIPLE OF OPERATION With your purchase of this humidification system, you have invested in a humidifier that operates on the evaporative principle – nature’s own way of adding moisture – providing optimum relative humidity throughout the heating season. It is very possible that you have questions concerning your new humidifier – questions on what it can do for you, and what you should do to receive maximum benefits from it. This booklet is intended to answer these questions.
The minerals and solid residue not trapped by the replaceable Water Panel evaporator are flushed down the drain in the Models 350, 360, 500, 600 and 700. This is the most effective and least expensive method to dispose of trouble-causing minerals. The drain also eliminates the problems caused by stagnant water. There are some homes where drain facilities are not accessible or available.
TABLE OF CONTENTS OPERATING INSTRUCTIONS – MODELS 400, 600 & 700 There are 2 possible modes of operation of your Aprilaire Humidifier Control – Automatic and Manual. An explanation of both modes follows: Automatic Mode: (Manual Mode-see pg 5) Your Aprilaire Humidifier Control is installed in the cold air return duct. During the first heating season, your Humidifier Control needs to be set initially to match your home’s condition. Please follow these steps when adjusting your control (refer to Figure A). 1.
The relative humidity in your home will now be accurately controlled to meet your needs and should not need further adjustment during future heating seasons. Make note of the dial setting in the event you temporarily move the knob to “OFF” when performing annual maintenance of your Aprilaire Humidifier. FIGURE A 90-1054 Your Aprilaire Automatic Humidifier is a high precision system that will accurately maintain the relative humidity in your home to a maximum of 45% RH and a minimum of 10% RH.
TABLE 2 – % Relative Humidity Guide Dial Setting Outdoor Temperature (˚F) 1 2 3 4 5 6 7 -10 10 10 10 15 20 25 30 0 10 10 15 20 25 30 35 10 10 15 20 25 30 35 40 20 15 20 25 30 35 40 45 30 20 25 30 35 40 45 45 40 25 30 35 40 45 45 45 As an example, if the outdoor temperature is 20°F, and, following step 3, the humidifier turns off at “5” on the dial range, then the RH in your home is 35%.
TABLE 3 – Outdoor-Indoor Relative Humidity Outside Temperature +40°F +30°F +20°F +10°F 0°F –10°F –20°F Your Aprilaire Humidifier Control is a precision instrument that can be used to determine the RH accurately in your home during the winter. Recommended RH 45% 40% 35% 30% 25% 20% 15% FIGURE B To do this, follow these steps: 1. Activate the furnace blower by setting your thermostat to a higher temperature. 2. Turn the control dial setting to the “OFF” position.
TABLE OF CONTENTS OPERATING INSTRUCTIONS – MODELS 350, 360 & 500 Your Aprilaire Humidifier is controlled by a manual humidistat installed either in the living area or in the cold air return. It is important to anticipate a drop in temperature and reduce the setting accordingly to avoid excessive condensation. For example, with an outside temperature of 20° the correct setting will be 35% relative humidity.
TABLE OFMAINTENANCE CONTENTS ANNUAL For best performance, we recommend that you replace the Water Panel evaporator in your Aprilaire Humidifier at least annually with the exception of Model 400 which should be changed twice per heating season. If you have a Humidifier Control equipped with a “Change Water Panel” indicator light, it will be lit (during operation only) when it is time to change your Water Panel. See individual model instructions for additional maintenance.
TABLE OF CONTENTS PERIODIC PREVENTATIVE MAINTENANCE NOTE: Periodic inspection and preventative maintenance of your total heating system is important for efficient and safe operation. Your heating contractor should include humidifier service at the same time. All models are equipped with a water delivery system that includes a water feed tube, in-line water strainer and orifice as shown below. These parts should be inspected and/or cleaned periodically to assure continued proper humidifier performance.
MODELS 350 & 360 REQUIRED MAINTENANCE INSTRUCTIONS (APRILAIRE HUMIDIFIER MODELS 350 & 360) WARNING 120 volts may cause serious injury from electrical shock. Disconnect power and shut off water supply before servicing. 4 2 9 5 3 1. Inlet Grille 2. Distribution Tray 3. Scale Control Insert 4. Distribution Tray Cover 5. Water Panel Evaporator 6. Drain Spud 7. Power Cord 8. Metal Housing 9. Water Panel Evaporative Assembly 8 6 7 1 1. Note Manual Humidistat setting and turn dial to the “OFF” position. 2.
MODEL 400 REQUIRED MAINTENANCE INSTRUCTIONS (APRILAIRE HUMIDIFIER MODEL 400) CAUTION Sudden operation may cause personal injury or property damage. Turn Humidifier Control to “OFF” or lowest setting before servicing. 1. Front Cover 2. Feed Tube 3. Integral Bypass Damper 4. Water Panel Evaporative 1 Assembly 5. Distribution Tray 6. “V” Notches 7. Water Panel Evaporator 8. Scale Control Insert/Float Chamber 9. Overflow Drain Line 10. Float Cover 11. Float 12.
MODELS 500 & 600 REQUIRED MAINTENANCE INSTRUCTIONS (APRILAIRE HUMIDIFIER MODELS 500 & 600) CAUTION Sudden operation may cause personal injury or property damage. Turn Humidifier Control to “OFF” or lowest setting before servicing. 4 1. Front Cover 2. Feed Tube 3. Integral Bypass Damper 4. Water Panel Evaporative Assembly 5. Distribution Tray 6. “V” Notches 7. Water Panel Evaporator 8. Scale Control Insert 9. Drain Line 5 8 6 7 1 2 3 9 90-1076 1.
MODEL 700 REQUIRED MAINTENANCE INSTRUCTIONS (APRILAIRE HUMIDIFIER MODEL 700) WARNING ELECTRICAL SHOCK HAZARD. Can cause injury or death. Disconnect all electrical power supplies before servicing. Shut off water supply before disconnecting or tapping into any water supply line. 3 1. Humidifier Cover Assembly 2. Base Assembly 3. Water Panel Evaporative Assembly 4. Distribution Tray 5. ”V” Notches 6. Water Panel Evaporator 7. Scale Control Insert 8. Drain Line 9. Power Cord 4 5 2 7 1 6 8 90-1075 9 1.
TABLE OF CONTENTS LIMITED WARRANTY Your Research Products Corporation Aprilaire Humidifier unit is expressly warranted for five (5) years from date of installation to be free from defects in materials or workmanship except, however, for the disposable Water Panel which will have to be replaced from time to time depending upon the amount of use.
