AERCO Modulex EXT 1530 - 3060 - Manual (Page 42)

MODULEX EXT 1530, 1912, 2295, 2677, 3060 Boilers
Installation, Operation & Maintenance Manual
3.22.1 Important Factors for Terminal Orientation and Location
Terminals should be positioned so as to avoid products of combustion from entering openings into
the buildings or other vents.
The terminal should be located where dispersal of combustion products is not impeded and with
due regard for the damage or discoloration that might occur to building surfaces in the vicinity. In
certain weather conditions condensation may also accumulate on the outside of the air inlet pipe.
Such conditions must be considered and where necessary insulation of the inlet pipe may be
required. In cold and/or humid weather water vapor may condense when leaving the vent
terminal. The effect of such condensation must be considered. The terminal must be located in a
place not likely to cause a nuisance.
Maintain 12” of clearance above the highest anticipated snow level or grade, whichever is greater.
Please refer to your local codes for the snow level in your area.
The whole route of the vent system must be installed upwards and NEVER completely nor partly
downwards.
3.22.2 Minimum and Maximum Wall Thickness
The label at right, which is placed on the unit,
indicates the minimum and maximum wall thickness
through which venting is allowed to penetrate
horizontally
. However, if venting is vertical, then there
is no minimum wall thickness.
3.23 Vent Pipe Sizing
The maximum length is the combined length of straight horizontal and vertical runs, and the
equivalent straight length of fittings. The required lengths for each boiler are as follows:
NOTE
The examples referenced in the table below are on the next page.
Table 3-4: MODULEX EXT Vent and Piping Diameter Chart
Model
No. of
Modules
Vent Diameter
Inches (mm)
Max. Vent Equiv.
Feet (M)
Examples 1 & 2
Max. Vent Equiv.
Feet (M)
Examples 3 & 4
EXT 1530 4 10” (254 mm) 100 ft. (30 m) 6 + 6 (1.8 + 1.8)
EXT 1912 5 10” (254 mm) 100 ft. (30 m) 6 + 6 (1.8 + 1.8)
EXT 2295 6 12” (304 mm) 100 ft. (30 m) 6 + 6 (1.8 + 1.8)
EXT 2677 7 12” (304 mm) 100 ft. (30 m) 6 + 6 (1.8 + 1.8)
EXT 3060 8 12” (304 mm) 100 ft. (30 m) 6 + 6 (1.8 + 1.8)
Table 3-5: MODULEX EXT Vent and Piping Length Chart
Model
Vent Pipe
Diameter
Sharp 90° Elbow
Equivalent
Feet (m)
Sweep 90° Elbow
Equivalent
Feet (m)
45° Elbow
Equivalent
Feet (m)
Maximum Length
Equivalent
Feet (Meters)
EXT 1530 10”
(254 mm)
13 Feet
(4 m)
7 Feet
(2 m)
5 Feet
(1.5 m)
100 Feet
(30 m)
EXT 1912
EXT 2295
12”
(304 mm)
13 Feet
(4 m)
7 Feet
(2 m)
5 Feet
(1.5 m)
100 Feet
(30 m)
EXT 2677
EXT 3060
Page 42 of 138 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0095_0E
12/01/14 Phone: 800-526-0288 GF-139