Aprilaire 850 Specifications download pdf (Page 23)

Absorption Distance (Minimum distance from dispersion tube downstream to any obstruction or bend in duct)

Input

Power

Humidifier

Output

Airflow Velocity

70°F & 30% RH

Setpoint

70°F & 45% RH

Setpoint

65°F & 45% RH

Setpoint

120 V 11.5 gal/day

300 fpm 7" 11" 13"

600 fpm 3" 6" 7"

1200 fpm 2" 3" 3"

1800 fpm < 2" 2" 2"

208 V 20.5 gal/day

300 fpm 13" 19" 23"

600 fpm 6" 10" 12"

1200 fpm 3" 5" 6"

1800 fpm 2" 3" 4"

240 V 23.3 gal/day

300 fpm 15" 23" 28"

600 fpm 6" 12" 13"

1200 fpm 5" 6" 7"

1800 fpm 3" 4" 5"

APRILAIRE STEAM

The Aprilaire dispersion tube employs tubelets that reach inside the tube and capture the hottest, driest steam and

introduce this into the air stream in a controlled manner. Any condensation that forms in the dispersion tube or the

tubelet is captured and drained out of the duct. Proper dispersion of steam into the air steam insures the humidity is

delivered into the home and not on the duct walls.

The distance the steam absorbs

into the air depends on the air

temperature, RH set point, and air

flow velocity in the duct. In general

if the distance from the dispersion

tube to an obstruction is less than

28” the steam will have enough

distance to absorb into the air. Ifthe

distance is less refer to the chart

to the right.

Applications that do not have

forced air through a duct system to distribute air into the home are typically installed with the Aprilaire Model 850 fan pack.

The Fan Pack is mounted in the conditioned space and distributes the humidity into the air.

Canister Replacement (Model 80)

Canister replacement is recommended every humidifier season. When the canister cannot

reach the correct conductivity, it will stop and wait for the canister to be replaced.

Abnormal water conditions may cause the unit to operate for month or years.

If the canister cannot reach 11.5 amps the unit will shut down, the service light will turn

on and it will wait for the tank to be replaced.

DRI-STEEM's reputation as the commercial/

industrial humidification leader is built on 45 years

of product innovation. Aprilaire has combined

DRI-STEEM's commercial steam humidification

expertise with Aprilaire's residential market

knowledge to produce steam humidifiers perfect

for residential applications where evaporative

technology is not practical.

Region of Waterloo Water

Testing Laboratory

Ontario, Canada

Glenn H. Curtiss Museum

Hammondsport, New York

University of Alberta

Hospitals

Alberta, Canada

TO REMOVE THE CANISTER IT’S A SIMPLE PROCEDURE.

1. Turn power off at the unit, it will automatically drain.

2. When draining is complete, turn off electrical to the unit.

3. Remove the front panel

4. Disconnect electrodes, water sensor, and hose clamp at

top of canister

5. Replace canister and provided o-ring

Performance You Can Count On

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Aprilaire 850 Specifications Page 23

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