Materials List; Operation; Specifications & Dimensions - Aprilaire 850 Installation & Maintenance Instructions Manual

MATERIALS LIST

MATERIALS FURNISHED
850 Fan Pack
75VA transformer for the Steam Humidifier (included with service part
5658 only, installed in Model 865/866 steam humidifiers)
Model 65 Digital Manual Humidistat (provided with service part 5658
and Model 865)
Power connector for Model 65 Digital Manual Humidistat
2 housing mounting screws
4 grille mounting screws
2 serrated nuts for mounting steam manifold
1 stainless steel 45° elbow

OPERATION

On a call for humidity, the Steam Humidifier provides power to the Fan Pack . The Fan Pack blower distributes the steam to the room . When the
call for humidity ends and the humidifier stops producing steam, the Fan Pack blower will continue to operate for 2 minutes to distribute the
remaining steam before de-activating .
When installing with the Model 800 Steam Humidifier, use the Manual Digital Humidistat included (see Figure 8) . When installing with the
Model 801 Modulating Steam Humidifier, use the Model 5558 Modulating Humidistat (see Figure 9) .
SPECIFICATIONS & DIMENSIONS
TECHNICAL SPECIFICATIONS
• 24 VAC supplied by the steam humidifier . If
purchasing the 5658 fan pack service part ensure
the included 75VA transformer is installed in the
steam humidifier .
• Stainless steel steam dispersion chamber
• Noise dampening housing liner
• Ultra quiet fan (50 dB)
NOT FURNISHED
Steam hose – 6' steam hose provided with the Steam Humidifier
Steam hose clamp – provided with the Steam Humidifier
Wire for humidistat and wire to power the Fan Pack
Model 5558 Modulating Humidistat (for Model 866 only)
DIMENSIONS
FIGURE 1 – Model 850 Fan Pack Dimensions (inches)
14
16-3/16
9
FAN INLET FAN OUTLET
STEAM DISPERSION MANIFOLD
3-15/16
5-3/16
6-29/32
7-21/32
1-3/32
90-2193
3