Exhaust Vent/Air Intake Pipe Sizing; Exhaust Vent/Air Intake Pipe; Installation - RBI IEW-199 Installation And Operation Instructions Manual

VENTING & AIR INLET PIPING
Figure 3.10
D. EXHAUST VENT/AIR INTAKE PIPE SIZING
1. Infinite Energy boiler model IEW-199 to be installed
using 3" Schedule 40 or 80 PVC or CPVC piping
using the provided vent adapter. Infinite Energy model
IEW-399 boilers are to be installed using 4" Schedule
40 or 80 PVC or CPVC piping using the vent adapter
provided.
2. Concentric polypropylene venting systems can be
installed using optional vent adapters. Table 3.2 shows
the appropriate Stock Codes.
Table 3.2: Stock Codes
Boiler Model
IEW-199
IEW-399
Contact your RBI Representative for more information
on this option.
3. The total combined length of exhaust vent and air
intake piping is 200 equivalent feet (60 m).
a. The equivalent length of elbows, tees and other
fittings are listed in Table 3.3.
12
Table 3.3: Equivalent Length of Fittings
Table 3.4: Sample Equivalent Length Calculation
Straight Length of Pipe
Conc. Vent Termination
E. EXHAUST VENT/AIR INTAKE
Stock Code
3354236
3354237
Fitting Description
Elbow, 90° Short Radius
Elbow, 90° Long Radius
Elbow, 45° Short Radius
Coupling
Air Intake Tee
Stainless Steel Vent Kit
Concentric Vent Kit
b. The equivalent length can be calculated as follows.
Exhaust
50'
90° Elbows, SR 2 x 5'= 10'
45° Elbows, SR
This is well below the 200 feet maximum
equivalent length. If the total is above 200
equivalent feet, alternate boiler locations or
exhaust penetration location should be considered.

INSTALLATION

1. Figure 12.1 shows the exhaust connection on top of
the boiler, near the rear in the center.
a. The exhaust connections for the IEW-199 (3") and
IEW-399 (4") are male CPVC pipe.
b. These connections are to be joined with suitable
PVC/CPVC adhesives in accordance with
manufacturers' instructions.
2. The Air Intake connection is to the right of the exhaust.
3. Both connections are clearly marked.
4. Remove all burrs and debris from the joints and fittings.
WARNING
This appliance uses a positive pressure venting
system. All joints must be sealed completely to
prevent leakage of flue products into living spaces.
Failure to do this may result in severe personal injury,
death or major property damage.
5. Horizontal lengths of exhaust vent must be installed with
a slope of not less than 1/4" per foot (21 mm per meter)
toward the boiler to allow condensate to drain from the
vent pipe. If the vent pipe must be piped around an
obstacle that causes a low point in the piping, a drain
with an appropriate trap must be installed.
6. All piping must be fully supported. Use pipe hangers
at a minimum of 4 foot (1.22 meter) intervals to
prevent sagging of the pipe.
Equivalent Length
5 feet
4 feet
3 feet
0 feet
0 feet
1 foot
3 feet
Air Inlet Total
50' 100'
1 x 5' = 5' 15'
2 x 3' = 6' 6'
1 x 3' = 3' 3'
Total 124'