12
STS INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Outdoor Enclosure
INSTALLATION
Notes:
1. The Outdoor Enclosure has two available steam dis tri bu tion confi gurations. The standard con fi g u ra tion has a steam outlet on the right side of the
Outdoor Enclosure for con nect ing to steam dispersion unit piping. The optional internal steam dis tri bu tion con fi g u ra tion routes steam within the
Outdoor Enclosure and down through the enclosure pipe chase into a building.
2. There are four knockouts located on the right and left side of the enclosure. Knockout sizes are 1½" (hole dia. 50 mm) for STS models 25-100, and
2" (hole dia. 63.5 mm) for STS models 200-800. Run the electrical power into the en clo sure at these knockouts.
3. All piping from the STS unit to the steam outlet is stainless steel pipe. Depending on the application, tubing or DriSteem steam hose is recommended
for interconnecting piping from steam outlet to dispersion assembly.
4. Install a riser trap in the branch line leading to the humidifi er.
5. The preferred location for the STS steam control valve is inside the Outdoor Enclosure. If one of these valves must be located inside the building, it
must be located within 6' (1.8 m) of the humidifi er to reduce pressure drop.
6. See the dimensions in Table 13-1.
Table 12-2:
Outdoor Enclosure weights
STS model
Shipping weight*
Operating weight*
lbs
kg
lbs
kg
25
600
272
680
308
50
625
284
840
381
100
640
290
860
390
200
1050
476
1650
748
400
1125
510
1750
794
800
1225
556
2250
1021
* Includes humidifi er
mc_012611_1016
Table 12-1:
Outdoor Enclosure connection sizes
Description
STS model
25 – 100
200 – 800
Water makeup
(fi ll)
1/4” pipe thread (DN8) 1/4” pipe thread (DN8)
Drain
3/4” (DN20)
1” (DN25)
Condensate
return
3/4” pipe thread (DN20) 3/4” pipe thread (DN20)
Steam outlet
See Table 27-1.
mc_012611_1017
mc_012511_1635
DC-1476
Ventilation fans
Power block
Knockouts, 4" (102 mm) on center
Enclosure drain 1½" pipe thread
(DN40) with male nipple
Pipe chase
G
A
Standard steam outlet
Optional steam outlet
See Note 2
STS humidifi er
L
K
6.5"
FIGURE 12-1: OUTDOOR ENCLOSURE WITH STANDARD OR OPTIONAL STEAM OUTLET, ELEVATION VIEW
