Figure - Aprilaire 850 Installation & Maintenance Instructions Manual

INSTALLATION INSTRUCTIONS
LOCATION
(CONTINUED)
The following guidelines are for a 240V installation in which the unit
discharges into a space with 70°F air temperature and 40% RH .
• Allow 5 feet of unobstructed space directly in front of the grille .
• Allow 2 feet on either side of the grille .
• Allow 1-1/2 feet above the grille .
See Figure 4 .
If the room temperature is less that 70°F, allow an additional 6" to
each distance for every two degree drop in temperature .
If the RH set point is higher than 45%, allow an additional foot of
space between the grille and any obstruction or surface .
Warmer room air temperature and RH below 35% will reduce the
amount of unobstructed space required to absorb discharged steam,
but the distances provided are recommended minimums .
NOTE: Condensation running through the steam hose back into the
canister may cause a gurgling noise . Install Drain Tee and Trap #4028
as shown in Figure 5 to divert condensation to drain to eliminate
gurgling noise .
(CONTINUED)
FIGURE 4 – Minimum Clearances
INTERNAL WALL

FIGURE 5

STEAM HOSE
1" I.D.
(DOWNWARD
SLOPE FROM
HUMIDIFIER
TO TEE)
1-1/2 FEET
MINIMUM
TO CEILING
2 FEET
MINIMUM
TO SIDE
WALL
5 FEET
MINIMUM
TO OBJECTS
MAXIMIZE
IN FRONT
OF GRILL
HOSE CLAMP
HOSE CLAMP
TEE
ASSEMBLY
STEAM
HUMIDIFIER
HOSE
CLAMP
FLARED
END
TRAP
NOTE: PRIME WITH WATER
BEFORE USING HUMIDIFIER
HOSE CLAMP
DRAIN HOSE
7/8" I.D.
90-2196
TO FAN PACK
STEAM HOSE, 1" I.D.
(DOWNWARD SLOPE TO TEE)
#4028 KIT
CONTENTS:
HOSE CLAMPS (5)
TRAP (1)
STEAM
TEE ASSEMBLY (1)
HOSE
1" I.D.
REFER TO STEAM
HUMIDIFIER
INSTALLATION
MANUAL FOR
ADDITIONAL
APPLICATION
INFORMATION.
90-1844
5