Install Instructions

48 103448-08- 9/16
IV. Venting E. Removing the Existing Boiler
• At top of vent pipe length install another
appropriate manufacturer’s 90° elbow so
that the elbow leg is opposite the building’s
exterior surface.
• Install horizontal vent terminal coupling.
• Brace exterior piping if required.
ii. Combustion Air Termination
• After penetrating wall, install a 90° elbow
so that the elbow leg is in the up direction.
• Install maximum vertical run of 7 ft.
(2.1 m) of combustion air pipe as shown in
Figure 6B.
• At top of vent pipe length install another
90° elbow so that the elbow leg is opposite
the building’s exterior surface.
• Install rodent screen (not supplied) and
horizontal air terminal (elbow).
• Brace exterior piping if required.
6. Vertical Vent Termination
a. Standard Two-Pipe Termination
See Figures 7 and 8.
i. Vent Termination
• Use the terminal supplied by the vent
system manufacturer shown in Table 10B.
Follow manufacturer’s instructions to
attach terminal to vent system.
ii. Combustion Air Termination
• Install vertical combustion air terminal.
Vertical combustion air terminal consists of
a 180° bend (comprised of two 90° elbows)
as shown in Figure 7A.
• Install rodent screen (not supplied) in the
combustion air terminal. Use a screen
having 1/2 in. x 1/2 in. (13 mm x 13 mm)
or larger mesh.
7. Running Flexible Stainless Steel Vent (Liner)
Through Unused Chimney or Chase
a. Models ALP080B through ALP285B are listed
for vertical venting by installing exible stainless
steel vent (M&G/DuraVent FlexNSeal brand)
in an UNUSED masonry chimney/chase and
supplying combustion air through a separate
wall or roof combustion air terminal. The unused
chimney ue must be structurally sound and in
good repair.
b. Refer to Figure 17A for details of chimney chase
installation.
c. When exible stainless steel pipe (liner) is used
for combustion product venting, it must be
installed at vertical or near vertical plane. This
will insure proper condensate ow back towards
the boiler.
d. Follow exible stainless steel pipe (liner)
manufacturer specic installation instructions
regarding application/listing, permits, minimum
clearances to combustibles, installation details
(proper joint assembly, pipe support and routing,
gasket and tting installation, optional tooling
availability/usage, routing through masonry
combination of combustion product venting and
combustion air supply).
e. When there is a conict between exible stainless
steel pipe (liner) manufacturer installation
instructions and Alpine boiler Installation,
Operating and Service Instructions, the more
restrictive instructions shall govern.
E. Removing the Existing Boiler
When an existing boiler is removed from a common
venting system, the common venting system is likely
to be too large for proper venting of the remaining
appliances. At the time of removal of an existing
boiler, the following steps shall be followed with each
appliance remaining connected to the common venting
system placed in operation, while the other appliances
remaining connected to the common venting system are
not in operation.
1. Seal any unused openings in the common venting
system.
2. Visually inspect the venting system for proper
size and horizontal pitch and determine there is no
blockage or restriction, leakage, corrosion, and other
deciencies which could cause an unsafe condition.
3. Insofar as is practical, close all building doors and
windows and all doors between the space in which
the appliances remaining connected to the common
venting system are located and other spaces of the
building. Turn on clothes dryers and any appliance
not connected to the common venting system.
Turn on any exhaust fans, such as range hoods and
bathroom exhausts, so they will operate at maxi mum
speed. Do not operate a summer exhaust fan. Close
replace dampers.
4. Place in operation the appliance being inspected.
Follow the Lighting (or Operating) Instructions.
Adjust thermo stat so appliance will operate
continuously.