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Aprilaire AA-4788

Maintenance Kit For Aprilaire Model 400 400A 400M
Price: $77.00


Aprilaire fresh ideas for indor air4785 Maintenace Kit for the Model 350 and 3604785 Maintenace Kit for the Model 350 and 3604793 Maintenace Kit for the Model 5504837 Maintenace Kit for the Model 560
Humidifier
Maintenance
4788 Maintenace Kit for the Model 400 400A 400M4792 Maintenace Kit for the Model 500 500A 500M4839 Maintenace Kit for the Aprilaire 600 600A 600M4750 Maintenace Kit for the Model 700 700A 700M 768 760

The Aprilaire maintenance kit 4788 includes everything you need to make your Aprilaire Model 400, 400A, 400M like new.

This 400 Series kit includes one each of the following items:

  1. #45 Water Panel ($12)
  2. #4403 Scale Control Insert ($17)
  3. #4406 Float Pair ($18)
  4. #4407 Water Distribution Tray ($18)
  5. #4405 Float Tray Cover ($11)
  6. #4004 In-Line Strainer ($5)
  7. #4231 Yellow Orifice ($3)
  8. #4335 Feed Tube with Compression Fitting ($10)
  9. Owner's Manual - Printed

The total cost of these items if purchased individually would be $94.00, save $17 by purchasing the 4788 maintenance kit.

Aprilaire 400 Series Parts
Aprilaire Staock #45 Water Panel
NuCalgon Micro-Plus Treatment System
Aprilaire 400A Installation and Template (2 Pages, 1M pdf)Aprilaire Humidifier Owners and Operation Manual (11 Pages, 854k pdf)
Parts Drawing for Aprilaire 400A (2 Pages, 912k pdf)Aprilaire Orifice Assembly Drawing (1 Page, 85k pdf)
Aprilaire Humidifier Service, Repair, Maintenace Manual (26 Pages, 3.7M pdf)Aprilaire Service Manual 2006 (26 Pages,3.5M pdf)
Aprilaire 58 Digital Humidistat Installation (15 Pages, 1.3M pdf)Annual Aprilaire Humidifier Service (1 Page, 361k pdf)
Installation of Digital Humidistat (8 Minutes, 13M wmf)Humidity Confort Zone information

Where is My 400 400A 400M Model Number

The Model Number on the Model 400 400A 400M is located on the side with the solenoid valve. The Aprilaire 400 Series can be configured with the bypass duct on the right or left. Thus the soleniod and label can be located on the right or left side.
Where is my Aprilaire 400 400A 400M Model Number

Aprilaire In-Line Strainer & Orifice

NuCalgon NP24 Series Filter Housing NP24DDAprilaire Flow-Thru humidifiers have a solenoid with a small strainer filter in the body. These strainers should be inspected and cleaned when replacing the water panel. If the strainer becomes clogged the water pressure will tear it and pieces will jam the solenoid or loose pieces will block the orifice.


Aprilaire 24 Volt Solenoid
Aprilaire 4004 InLine Strainer Aprilaire 4231 Yellow Orifice
Nu-Calgon Wholesale Professional Quality filters
Professional
Quality
NuCalgon Micro-Carbon 4 Inline Water Filter
NuCalgon MicroPlus 2 Water Filter w/Treatment
NuCalgon NP24 Series Filter Housing
Purification
  &Treatment

Aprilaire Humidifier Service Video


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