49
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
General venting (continued)
INSTALLATION
Table 49-1:
Equivalent vent lengths
Description
2" - 3" diameter
4" diameter
6" diameter
feet
meter
feet
meter
feet
meter
Long radius 90° elbow
3
0.9
4
1.2
6
1.8
Medium radius 90° elbow
5
1.5
7
2.0
10
3.0
Mitered 90° elbow
8
2.4
11
3.3
16
4.9
Long radius 45° elbow
1.5
0.5
2
0.6
3
0.9
Medium radius 45° elbow
2.5
0.8
3
1.0
5
1.5
Mitered 45° elbow
4
1.2
5
1.6
8
2.4
Concentric vent termination
5
1.5
7
2.0
Tee
16
4.9
21
6.5
32
9.8
3" to 2" (80 to 60 mm) step down adapter
5
1.5
7
2.0
10
3.0
FIGURE 49-1: VENT ELBOWS AND TEES
long
mitered
medium
concentric
Note: A maximum of eight elbows, including terminations, are allowed.
humidifier must be within the ranges shown in Table
49-2 from full output to minimum output.
• Do not common vent products of combustion the LX
series GTS humidifier with another LX series or any
other appliance.
• Flue gas outlet and combustion air inlet adapters
accept PVC, CPVC, Polypropylene and stainless steel
piping.
• Flue vent adapters, if used, must be installed vertically
at the point of connection to the GTS humidifier LX
series.
• Ensure that distances from vent terminal to adjacent
public walkways, buildings, and openable windows
and building openings are consistent with National
Fuel Gas Code, ANSI Z223.1, CAN/CGA B149
Installation Codes, National Gas Safety Code
(Installation & Use) Regulations (latest revision), or
governing codes.
• In areas accessible to the public, vent terminal must be
at least 7' (2.1 m) above ground level to prevent burns
from hot terminal surface.
• The vent terminal and air intake locations must be at
sufficient height above ground level to prevent blocking
by expected snowfall.
• Building materials must be protected from degradation
by flue gases.
• Maintain minimum horizontal clearance of 4' (1.22 m)
from electric meters, gas meters, regulators, and relief
equipment.
Table 49-2:
Venting pressure
Description
Minimum
Maximum
Flue gas outlet pressure
-0.05" WC
(+12 Pa)
+0.45" WC
(+112 Pa)
Combustion air inlet pressure
-0.45" WC
(-112 Pa)
+0.05" WC
(+12 Pa)