Alpine Installation, Operating, and Service Instructions

22 103448-02 - 6/13
n. If possible, install the vent and air intake terminals
on a wall away from the prevailing wind. Reliable
operation of this boiler cannot be guaranteed if the
terminal is subjected to winds in excess of 40 mph.
o. Air intake terminal must not terminate in areas that
might contain combustion air contaminates, such
as near swimming pools.
p. For sidewall venting the minimum horizontal
distance between any adjacent individual module
(boiler) vent terminations is twelve (12) inches.
Increasing this distance is recommended to avoid
frost damage to building surfaces where vent
terminations are placed.
CAUTION
Installing multiple individual module (boiler) vent
terminations too close together may result in cross
contamination and combustion product water
vapor condensation on building surfaces, where
vent termination are placed, and subsequent
frost damage. To avoid/minimize frost damage,
extend the distance from building surfaces to
vent termination end and increase the horizontal
distance between adjacent vent terminations.
q. The minimum horizontal distance between any
adjacent individual module (boiler) roof vent
terminations is one (1) foot.
7. Use noncombustible ¾" pipe strap to support
horizontal runs and maintain vent location and slope
while preventing sags in pipe. Do not restrict thermal
expansion or movement of vent system. Maximum
support spacing four (4) feet. Avoid low spots where
condensate may pool. Do not penetrate any part of
the vent system with fasteners.
8. Maintain minimum clearance to combustible materials.
See Figures 2A and 2B for details.
9. Enclose vent passing through occupied or unoccupied
spaces above boiler with the material having a re
resistance rating of at least equal to the rating of
adjoining oor or ceiling.
Note: For one or two family dwellings, re resistance
rating requirement may not need to be met, but is
recommended.
10. Multiple individual module vertical vent pipes may
be piped through a common conduit or chase so that
one roof penetration may be made.
IV. Venting A. General Guidelines (continued)
B. CPVC/PVC Venting
WARNING
CPVC vent components must be used within any
interior space where air cannot circulate freely,
such as air inside a stud wall, and in any boiler
closet.
WARNING
When using the CPVC/PVC vent options, the use
of CPVC is required when venting in vertical or
horizontal chase ways.
1. Components and Length Restrictions
a. See Table 5A for CPVC/PVC Vent & Air Intake
Components included with boiler, Table 5B for
CPVC/PVC Vent and Air Intake Components
(Installer Provided) required for Optional
Horizontal (Snorkel) Termination and Table 5C
for CPVC/PVC Vent and Air Intake Components
(Installer Provided) required for Optional Vertical
(Roof) Termination.
WARNING
All condensate that forms in the vent must be
able to drain back to the boiler.
b. Vent length restrictions are based on equivalent
length of vent/combustion air pipe (total length
of straight pipe plus equivalent length of
ttings). Maximum vent/combustion air lengths
are listed in Table 8. Do not exceed maximum
vent/combustion air lengths. Table 6 lists
equivalent lengths for ttings. Do not include
vent/combustion air terminals in equivalent
feet calculations. See “Combustion Air/Vent,
Equivalent Length Work Sheet”.
c. The vent termination location is restricted as per
'General Guidelines', Paragraph A, 6.
(Refer to Figure 4).
2.
System Assembly
a. Plan venting system to avoid possible contact
with plumbing or electrical wires. Start at
vent connector at boiler and work towards vent
termination.
b. Do not exceed maximum Vent/Combustion Air
length. Refer to Table 8.
c. Design the Vent System to allow 3/8" of thermal
expansion per 10 feet of CPVC/PVC pipe. Runs
of 20 feet or longer that restrained at both ends
must use an offset or expansion loop. Refer to
Figure 5 and Table 7.