INSTALLATION INSTRUCTIONS (CONTINUED)
16" Minimum
30" Recommended
for Service Access
IMPORTANT:
Loop drain hose
below Fan Pack
to provide trap.
Drain
FAN PACK LOCATION
The Fan Pack must be located near the Steam Humidifier to minimize
the length of the steam hose. If the Fan Pack is mounted directly
above the humidifier, 16” is required for the steam hose to make
the bend. See Figure 4. NOTE: The loop in the condensate hose is
required to prevent steam from escaping into the drain.
Condensation running through the steam hose back into the canister
may cause a gurgling noise. Install Tee & Trap #4028 (included with
Model 865) as shown in Figure 10 to divert condensation to drain to
eliminate the gurgling noise.
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.
The following guidelines are for a 120V installation in which the unit
discharges into a space with 70°F air temperature and 40% RH.
• Allow 4 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 5.
If the Steam Humidifier operates on 240V, allow an additional foot of
space between the grille and any obstruction or surface.
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.
90-1551
FIGURE 4 – Side View
FIGURE 5 – Minimum Clearances
1-1/2 feet
minimum
to ceiling
2 feet
minimum to
side wall
Maximize
4 feet
minimum to
objects in
front of grille
90-1552
NOTE:
See Figure 10 for drain
tee & trap installation
recommendations.
10
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