9
STS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Table 9-1:
STS mounting options
Mounting
method
STS model
25, 50, 100 200, 400, 800
Trapeze hanger
standard
—
H-legs
—
standard
Support legs
optional
—
Wall brackets
optional
—
Mounting the humidifi er
Important:
Installation must comply with local governing
codes.
These mounting methods are the only options
available to maintain compliance to the UL
998 standard. Alternate mounting methods will
compromise the humidifi er’s CE, ETL, and C-ETL
approval.
Support legs, trapeze hanger, and wall
brackets are not available for STS models 200,
400, and 800.
The STS humidifi er tank must be level from side to side and front to back. For
all mounting methods, shim and adjust when mounting, and verify that tank is
level after it is fi lled and at operating weight.
SUPPORT LEGS
See Figure 8-1. Use the enclosed bolts, nuts, and washers to fasten the
legs to the tank.
WALL BRACKETS
See Figure 8-3. DriSteem does not recommend mounting STS model 200,
400, or 800 with wall brackets. DriSteem recommends using 3/8" (M10)
fasteners.
•
Concrete or block wall:
Use concrete anchors (expansion bolts) rated for the
operating weight of the STS humidifi er. Position the wall brackets so they
are fl ush with the front and back fl anges of the tank.
•
Wood stud wall
: Mount two horizontal 2 × 4 boards
(100 mm × 50 mm timbers) 16" (404 mm) on center:
–
STS 25: Lag bolt (coach screw) the 2 × 4s to two studs.
– STS 50: Lag bolt the 2 x 4s to three studs.
–
STS 100: Lag bolt the 2 x 4s to four studs.
Lag bolt the wall brackets to the horizontal 2 × 4s. Position the wall brackets
fl ush with front and back fl anges of tank.
•
Metal stud wall:
Follow the wood stud wall guidelines above, but provide
a second set of 2 × 4s (100 mm × 50 mm timbers) on the backside of the
wall. Run bolts with washers through the face 2 × 4, through each metal
stud, and through the backside 2 × 4. Fasten the bolts and the face and
backside 2 x 4s to the wall with washers and nuts.
H-LEGS
See Figure 8-4. With the STS tank securely held in place above the fl oor,
attach front and rear supports using the supplied 3/8" (M10) bolts, nuts, and
washers.
Make sure the bottom of the tank is supported by the H -leg supports
;
this can be accomplished by having the bolts slightly loose as the unit is
lowered to the fl oor, then tighten them after the unit is place.
TRAPEZE HANGER
See Figure 8-2. Secure the threaded rods to an overhead structure strong
enough to support the operating weight of the humidifi er, fi eld-installed piping,
and (if mounted on the humidifi er) control cabinet.
For overhead installations, install a drip pan to prevent possible damage to
equipment below in the event of a water leak.
