27
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Interconnecting piping requirements
Table 27-1:
Steam loss of interconnecting steam hose and tubing
Description
Nominal hose or tubing size
Steam loss
Insulation thickness
Noninsulated
Insulated
inches
DN
lbs/hr/ft
kg/h/m
lbs/hr/ft
kg/h/m
inches
mm
Steam hose
1½
40
0.15
0.22
N/A
N/A
N/A
N/A
2
50
0.20
0.30
N/A
N/A
N/A
N/A
Tubing
1½
40
0.11
0.164
0.02
0.03
2
50
2
50
0.14
0.21
0.025
0.037
2
50
Note: These data are based on an ambient air temperature of 80 °F (27 °C), fi berglass insulation, and copper tubing.
CONNECTING TO HUMIDIFIER WITH STEAM HOSE
• Support steam hose for its full length to prevent sags, or low spots:
– For single dispersion tube without condensate drain, maintain a
minimum pitch of 2"/ft (15%) toward the steam cylinder.
– For dispersion devices with condensate drain, maintain a minimum pitch
of 2"/ft (15%) toward the dispersion device.
• Use DriSteem steam hose. Other manufacturers of steam hose may use
unacceptable release agents or material mixes that can affect humidifi er
system performance adversely. Using hose from alternative manufacturers
increases the possibility of foaming in the cylinder and accelerated steam
hose aging. Foaming causes condensate discharge at the dispersion
assembly.
• Do not use steam hose in outdoor applications.
• Do not insulate steam hose. Insulation causes accelerated heat aging,
causing the steam hose to become hard and susceptible to failure due to
cracks.
• For single dispersion tube applications, see hose kit sizes in Table 32-1.
Important:
Steam hose must be supported for its full length
to prevent sagging or low spots.
For tubing connections, see "Connecting to
humidifi er with tubing" on page 28.
INSTALLATION
Dispersion: