Installation Instructions; Location - Aprilaire 850 Installation & Maintenance Instructions Manual

InSTallaTIon InSTRUCTIonS

loCaTIon

The Model 850 must be located near the Model 800 Residential
Steam Humidifier to minimize the length of the steam hose . If the
Model 850 is mounted directly above the humidifier, 16" is required
for the steam hose to make the bend . See Figure 2 . noTe: The loop
in the condensate hose is required to prevent steam from escaping
into the drain .
Six feet of steam hose is provided with the Model 800 Steam
Humidifier . If the Fan Pack is mounted more than six feet from the
Humidifier, splice in 1" copper pipe (1-1/8" O .D .) as shown in
Figure 3 . Due to condensation inside the hose or pipe, the output
of the Fan Pack depends on the length of the steam hose or pipe
connecting it to the Humidifier . When the humidifier is wired to
120 volts, the fan pack will deliver 11 .5 gpd with up to 2 feet of hose
or insulated pipe . Each additional 2 feet of hose or pipe will reduce
output by approximately 1 gpd .
Humidity behaves like a gas and under ideal conditions will expand to
fill the space . However, air movement due to drafts or as a result of
temperature stratification may cause uneven distribution of humidity
within the conditioned space . To ensure even RH distribution, install
system in a central location . If a central location is not available, it
may be necessary to install two systems . Two systems will provide
more even RH distribution than one .
To prevent condensation on surfaces and furnishings, install the fan
pack so the steam being discharged has enough room to be absorbed
into the air before encountering surfaces .
4
FIGURe 2 – Side View
IMPORTANT:
Loop drain hose
below Model 850
to provide trap.
30" Recommended
for Service Access
Drain
FIGURe 3
3/4" x 1" (7/8" x 1-1/8" O.D.)
Reducing Coupling
1-1/2" Hose Clamp
Steam Hose
Humidifier
16" Minimum
for Steam Hose
90-1551
Fan
Pack
Steam Hose
1-1/2" Hose Clamp
1" (1-1/8" O.D.)
Insulated Copper Pipe
90-1565