Aprilaire 400 Dealer Parts List

Model 400/400M Humidifiers
NO. BLUE/GRAY UNITS - PART NAME
4B Base (blue/gray)
5B Cover (blue/gray)
13B Automatic Digital Humidifier Control
16B Name Plate (blue/gray)
17B Hole Plug (blue/gray)
18B Resistor Case & Manual Mode Label
NO. ALMOND UNITS - PART NAME
4A Base (almond)
5A Cover (almond)
13A Automatic Humidifier Control
16A Name Plate (almond)
17A Hole Plug (almond)
18A Resistor Case & Manual Mode Label
NO. COMMON PARTS
1 Water Panel Evaporator
2 Scale Control Insert w/Float Chamber
3 Water Distribution Tray
6 Water Level Sensor Assembly
7 Water Solenoid Valve (24 Volt)
8 In-line Strainer
9 Saddle Valve
10 Orifice (Yellow)
11 Feed Tube with Strainer, Orifice, Compression Sleeve and Nut
12 Transformer
15 Damper Assembly
19 Float Assembly
20 Float Cover
24 Automatic Humidifier Control Gasket
OTHER
13C Manual Humidifier Control
Outdoor Temperature Sensor
Current Sensing Relay
Saddle Valve Adapter
Shock Arrestor
Maintenance Kits
(includes parts 45 (2),4004, 4403, 4406, 4407, 4335 and 4231)
Blower Activation Relay
Humidifiers
Dealer Parts List
QTY/CTN
1
1
1
1
1
1
QTY/CTN
1
1
1
1
1
1
QTY/CTN
10 (5-2 pks.)
6
1
1
1
12
1
144 (12-12 pks.)
1
1
1
1
1
1
QTY/CTN
1
1
1
6
1
1
10
Effective Date: September 1, 2012
MODEL 400 MODEL 400M
PART NO. PART NO.
4734 4734
4728 4728
60 N/A
4880 4880
4741 4741
4737 N/A
MODEL 400 MODEL 400M
PART NO. PART NO.
4404 N/A
4329 N/A
56 N/A
4409 N/A
4408 N/A
4336 N/A
PART NO. PART NO.
45 45
4403 4403
4407 4407
4410 4410
4040 4040
4004 4004
4001 4001
4231 4231
4335 4335
4010 4010
4332 4332
4406 4406
4405 4405
4305 N/A
PART NO. PART NO.
N/A 4655
8052 N/A
50 50
4229 4229
4280 4280
4788 4788
4851 4851