16
Important:
Use only solid (not foam core) piping. Plastic pipe
and fittings are available through most plumbing
suppliers. Always check the marking on the pipe
to make sure you are using the correct material.
Use of cellular core PVC (ASTM F891), cellular
core CPVC, or Radel
®
(polyphenolsulfone) in non-
metallic venting systems is prohibited.
VENT PIPE LENGTH AND SIZING
See
Table 13
(page 25), and
Table 16
(page 28) for vent pipe
sizing. If the installation requires a vent riser, suitable drainage must
be provided to ensure condensation does not accumulate. See
Figure
34
(page 28). The specified maximum lengths are for
each
of the
intake and exhaust systems and
not
for the combined lengths of
both systems. Minimum pipe length is 600 mm (2’) with a minimum
of one 90° elbow per side (intake and exhaust).
1.
Determine termination type and pipe size.
2.
Determine number of elbows in vent system. Do not include
termination elbow. Calculate the maximum equivalent length
of the exhaust and air intake system using
Table 6
to determine
equivalent length values.
90° LONG SWEEP ELBOW
(LESS RESTRICTIVE)
90° SHORT SWEEP ELBOW
(MORE RESTRICTIVE)
Figure 11. Vent Pipe Elbows
STREET ELBOW
NORMAL ELBOW
BACK TO BACK ELBOWS
150 mm (6”) minimum
PREFERRED PRACTIICE
Figure 12. Vent Pipe Elbow Use
Table 6. Elbow Type and Equivalent Lengths of Straight Pipe
Elbow Type
Equivalent Length Of Straight Pipe
Short Sweep/Radius
Long Sweep/Radius
90°
8’ (2.4 m)
5’ (1.5 m)
45°
4’ (1.2 m)
2.5’ (760 m)
POLYPROPYLENE VENT SYSTEMS
Note:
This heater is certified to use solid wall polypropylene venting.
Do not install with the corrugated type flex venting.
Polypropylene vent systems do not use cement to connect the pipe
and elbow sections but use a push together gasket seal method. Do
not attempt to connect polypropylene with sealant cement.
•
Polypropylene vent systems are designed to use specific
adaptors to connect the water heater venting. These adaptors
are available through your venting supplier.
•
The PVC vent termination elbow supplied with this heater has
been certified to be used with polypropylene vent systems.
A polypropylene to PVC end connection is required and is
available through your venting supplier.
•
Optional wall plates that fit the polypropylene venting are also
available through your supplier.
Table 7. Pressure Switch Setting per Model
Pressure Switch Setting (NC)
40-Gallon
50-Gallon
Outlet Air (OAPS)
1.8” w.c.
1.8” w.c.
Intake Air (IAPS)
-1.88” w.c.
-1.88” w.c.
VENT PIPE RUNS
1.
The exhaust vent system must not, under any circumstances,
be run downhill then run uphill thus forming a valley. It may
leave a space to accumulate condensation and block vent pipe.
2.
Horizontal runs require a minimum 3 mm (1/8”) rise per 1.5 m (5’)
and a support according to venting manufacturer’s instructions.
Ensure there is enough height between heater and termination
to raise vent pipe runs the required distance.
3.
Vertical runs must provide proper support to prevent stress
on the pipes according to venting manufacturer’s instructions.
VENT PIPE INSTALLATION
The following guidelines should be followed when installing the air
intake and exhaust vent system:
•
Vent diameter must not be reduced unless specifically noted in
the installation instructions.
•
Support all horizontal pipe runs according to local codes or the
venting manufacturer’s instructions such as IPEX (www.ipexna.
com/resources/technical-library).
•
Covering non-metalic vent piping with thermal insulation is
prohibited.
•
Vents run through unconditioned spaces where below freezing
temperatures are expected, are not recommended.
•
Vents run through unconditioned spaces inside a building
may result in the condensation of flue gases during the winter
season.
VENTING INSTRUCTIONS
1.
Calculate “Equivalent Vent Length” before starting. Do not
exceed the values shown in
Table 13
(page 25), and
Table 16
(page 28)
.
Содержание 100 Series
Страница 53: ...53 DIAGRAMS DIAGRAMS WIRING DIAGRAM Figure 48 Wiring Diagram...
Страница 55: ...55 NOTES NOTES...
