Aprilaire 350 Owner's Manual
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Aprilaire 350 Owner's Manual

Aprilaire 350 Owner's Manual

Aprilaire 350: user guide
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See also: Service Manual , Installation Manual
Humidifiers
Owner's Manual
For Models 350, 360, 400, 500, 600 & 700
Includes Safety & Operating Instructions
and Warranty Information
READ AND SAVE THESE INSTRUCTIONS

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Summary of Contents for Aprilaire 350

  • Page 1 Humidifiers Owner’s Manual For Models 350, 360, 400, 500, 600 & 700 Includes Safety & Operating Instructions and Warranty Information READ AND SAVE THESE INSTRUCTIONS...

  • Page 2: Table Of Contents

    Models 350 & 360 ........

  • Page 3: Principle Of Operation

    The operating principle of your Aprilaire humidifier provides all of these advantages. Here, briefly, is the method: Except for Models 350 and 360, the Aprilaire Humidifier is installed to operate in conjunction with the furnace blower motor. When the Aprilaire Humidifier Control calls for humidity and the blower motor is operating, water flows to the distribution tray located at the top of the humidifier.
  • Page 4 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.

  • Page 5: Operating Instructions - Models 400, 600 & 700

    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.
  • Page 6 Aprilaire Humidifier. 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. For every 1°F change in outdoor...

  • Page 7: Manual Mode

    “5” on the dial range, then the RH in your home is 35%. Manual Mode: (Automatic Mode – see page 3) Your Aprilaire Humidifier Control is installed in the cold air return. It is important to anticipate a drop in outdoor temperature and reduce the setting accordingly to avoid excessive condensation.
  • Page 8 The furnace blower motor must be operating and the furnace calling for heat for the Aprilaire Humidifier to function. Note: Turning the knob to “Test/Reset” resets the “Change Water Panel” internal timer. In addition, at this setting, the humidifier will only operate for 1 minute.

  • Page 9: Operating Instructions - Models 350, 360 & 500

    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.

  • Page 10: Annual Maintenance

    TABLE OF CONTENTS ANNUAL MAINTENANCE 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”...

  • Page 11: Periodic Preventative 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.

  • Page 12: Models 350 & 360

    Replace the Water Panel evaporator (Stock No. 35) with a Genuine Aprilaire Water Panel. Slide the Water Panel back into the scale control insert (3) and snap the distribution tray cover (4) into the distribution tray (2). Then snap the distribution tray back into the scale control insert.

  • Page 13: Model 400

    Replace tube if it is cracked, brittle, or has been damaged. 9. Slide a new Aprilaire No. 45 Water Panel evaporator (7) into the scale control insert/float chamber (8). Snap the distribution tray (5) back on the scale control insert (8).

  • Page 14: Model 500

    Replace the Water Panel evaporator (Stock No. 35 for Model 600 and Stock No. 10 for Model 500) with a new Genuine Aprilaire Water Panel. Slide the Water Panel evaporator back into the scale control insert with the colored spot up and snap the distribution tray (5) back into place.

  • Page 15: Model 700

    Replace the Water Panel evaporator (Stock No. 35) with a new Genuine Aprilaire Water Panel. Slide the Water Panel evaporator back into the scale control insert with the colored spot up and snap the distribution tray (4) back into place.

  • Page 16: Limited Warranty

    TABLE OF CONTENTS WARRANTY REGISTRATION Visit us on-line at www.aprilaire.com to register your Aprilaire product. If you do not have on-line access, please mail a postcard with your name, address, phone number, product purchased and date of installation to: Research Products Corporation, P.O.

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360700500600400

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