Steam Distributors - Liebert SGH Steam Installation And Operation Manual

Figure #5
Remote Mounted Blower Packs (SGBP)
FRONT
POWER AND
CONDENSATE
CONTROL
STEAM
WIRING FROM
HUMIDIFIER
10-20
005-030
See Figure #6 for mounting clearances.
A 3.2" (8.0cm)
3. All SGH blower packs consist of a steel
cabinet containing: blower/motor powered by
voltage directly from the humidifier, fuse, relay,
speed select switch, stainless steel steam
distributor, supply air grille with adjustable
louvers, and built-in manual reset safety
thermostat to turn off the humidifier if the
blower pack gets overheated. Control
thermostat, mounted on the steam distributor,
starts the fan when steam is generated. When
supply voltage differs from voltage required to
run blower motor, blower pack will contain a
proper transformer. All blower packs provide
intake air filters.
4. Refer to Figure #6 for overhead and frontal
clearances required for blower packs.
Minimum clearance for the sides of the
Blower Pack unit is 12 inches. Dimensions
apply to both built-on and remote-mounted
versions of blower packs.
5. Mount remote blower pack(s) using factory
supplied wall mounting bracket, see Figure #5,
with clearance as recommended in Figure #6.
6. Steam distributor on the built-on and remote
blower packs have a hot surface that could
result in burns if touched. If space allows, we
recommend mounting at least 8 feet above the
floor.
7. Do not use blower packs as ducted blowers.
The air volume from a blower pack is not
sufficient to absorb the steam generated.
8. 8. Pipe the steam line as stated in the STEAM
LINE section on page 6.
WALL
SIDE
3.2" A
(8 cm)
050-100 050-100
3.2" (8.0cm)
- 3 -
Figure #6
Overhead and Frontal Clearances for Blower
Packs
SGH Min. Min. Overhead
Model Number Clearance
of Blower inches (cm)
Packs
010 1
020 1
050 1
100 1
200 2
*Remote mounted only. Four remote mounted blower
packs are recommended on the 200 model.
Nominal conditions 72ºF, 35% RH.

STEAM DISTRIBUTORS

1. Each cylinder requires its own steam line
and at least one distributor (do not join two
or more cylinders to one larger steam line).
Any cylinder's steam line may be divided into
multiple branches to feed more than one
distributor. Steam supply line "tees" are
common copper fittings that are available for
this purpose.
2. Steam distributor locations are typically as
follows: supply air duct, return air duct, air
handling unit. Proper location should
consider: air temperature, relative humidity
before the distributor, air velocity, dimensions
of the location, amount of steam being
introduced into the duct, downstream
obstructions, and surfaces vulnerable to
wetting.
3. When steam distributors are located in a duct,
they should be in a straight section of duct at
least 6 feet (2 meters) from any elbow or
obstruction. If the duct or plenum conditions
result in poor absorption distance
characteristics, please consult your local
representative or the factory. See Figure #7.
4. Steam distributors should always span the
width of the air stream. Multiple steam
distributors, arranged in a bank, can
minimize absorption distance.
Min. Front
Clearance
inches (cm)
18 (45) 30 (76)
18 (45) 36 (91)
36 (91) 84 (213)
48 (122) 156 (396)
42 (122) 156 (396)