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INSTALLATION INSTRUCTIONS
TABLE 4 – Steam Humidifier Capacity in Gallons/Day
120 Volts
Steam
Hose or
11.5 Amps
Insulated
Pipe
Steam
Insulated
Length
Hose
Pipe
< 2 ft .
11 .5
11 .5
2 ft .
11
11
4 ft .
10
11
6 ft .
9
11
8 ft .
10
10 ft .
10
12 ft .
10
14 ft .
9
16 ft .
9
18 ft .
9
20 ft .
9
HUMIDIFIER
Do not mount humidifier in a location where ambient
operating temperature exceeds 140°F or where freezing
temperatures may occur. Extreme temperatures may cause the
humidifier to leak which can damage furnishings or structure .
Mount humidifier in a location that allows access for servicing, and
clearance to remove front panel for replacing the canister and side
panel for access to the electrical components during installation .
See Figure 7 for minimum clearances around humidifier .
The humidifier should be mounted as close to the dispersion
tube as possible . Table 4 shows how capacity is reduced as the
distance between the humidifier and dispersion tube increases . If
the humidifier is mounted on the duct directly below the dispersion
tube, allow space for a bend in the steam hose . Allow a minimum
of 2" of steam hose to extend straight out of the humidifier before
beginning any bends; this will help ensure a tight connection with
the top of the canister .
The humidifier can be mounted to a wood surface, or to sheet metal
ductwork if it is structurally stable . Do not mount humidifier to fiber
duct board . Sound isolation may be desired when mounting to sheet
metal ductwork .
The humidifier must be mounted to a vertical surface and must be
mounted level in the upright position .
(CONTINUED)
16.0 Amps
11.5 Amps
Steam
Insulated
Steam
Hose
Pipe
Hose
16 .0
16 .0
20 .5
15 .5
15 .5
20
14 .5
15 .5
19
13 .5
15
18
14
14
14
13
13
13
13
208 Volts
16.0 Amps
Insulated
Steam
Insulated
Pipe
Hose
Pipe
20 .5
30 .0
30 .0
20
29
29 .5
20
28
29 .5
20
27
29
19
28
19
28
19
28
18
27
18
27
18
27
18
27
FIGURE 7 – Clearances
FRONT VIEW
4"
90-1702
240 Volts
11.5 Amps
16.0 Amps
Steam
Insulated
Steam
Hose
Pipe
Hose
23 .3
23 .3
34 .6
23
23
34
22
23
33
21
22
32
22
22
22
21
21
21
20
16" for
Steam
Hose
16" for
30" for
Electrical
Service
Access
Access
SIDE VIEW
16"
for Drain
Insulated
Pipe
34 .6
34
34
33
33
33
33
32
32
32
31
9
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