Install Instructions

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Figure 2E: Access Panel and Gasket Installation
III. Pre-Installation and Boiler Mounting G. General (continued)
WARNING
Access Panel must be installed while boiler is in
operation.
H. Boiler Stacking
1. For installations with unusually high space
heating and/or domestic hot water heating loads,
where employing two (2) Alpine boilers will offer
the benets of greater operational efciency, oor
space savings and boiler redundancy, the Alpine
boilers may be installed stacked one on the top of
the other. Refer to Table 3 “Alpine Boiler Model
Stacking Combinations” for details.
Table 3: Alpine Boiler Model Stacking
Combinations
Bottom
Boiler Model
Top Boiler Model
(2)
ALP080B
(1)
ALP080B
ALP105B
(1)
ALP080B or ALP105B
ALP150B
(1)
ALP080B through ALP150B
ALP210B
(1)
ALP080B through ALP210B
ALP285B ALP080B, ALP105B, ALP150B & ALP285B
Notes:
(1)
Floor-mounted builds only
(2)
Floor-mounted or wall-mounted build where applicable
2. To eld assemble individual Alpine boilers
into a stackable conguration, use the steps
below:
a. Position the bottom boiler rst. Refer to Sections
II “Unpacking Boiler” and III “Pre-Installation
& Boiler Mounting” of the manual for details.
Always position higher input boiler model as
bottom boiler.
b. Each Alpine boiler is factory packaged with two
(2) Stacking Boiler Attachment Brackets (P/N
101679-01) and the bracket mounting hardware
[six (6) self-drilling hex washer head plated
#8 x ½” long screws, P/N 80860743]. Locate
and remove the brackets and the hardware.
The Stacking Boiler Attachments Bracket
has three 7/32” diameter holes punched in a
triangular pattern. See Figure 3 “Stacking Boiler
Attachment Bracket Placement”.
c. Alpine boiler left and right side panels have
a series of dimples at panel top and bottom.
These dimples are positioning dimples for
Stacking Boiler Attachment Bracket mounting
screws. Side panel bottom positioning dimples
are evenly spaced from boiler front and back,
while side panel top positioning dimples follow
specic pattern to compensate for Alpine boiler
model variable depth.
d. Position the upper boiler on the top of the bottom
boiler and align boiler front doors and sides ush
with each other.
• Place rst Stacking Boiler Attachment
Bracket onto the upper boiler left side panel,
at the panel lower left corner and align
bracket two upper holes with corresponding
side panel lower dimples.
• The remaining lower bracket hole must align
with a matching bottom boiler left side panel
top positioning dimple.
• Once bracket holes and side panel dimple
alignment is veried, attach the bracket to
top and bottom boiler left side panels with
the mounting screws.
e. Repeat above procedure to install second
Stacking Boiler Attachment Bracket and secure
the stacked boiler right side panels together at
the front right corner.
f. Install the third Stacking Boiler Attachment
Bracket to secure top and bottom boiler left side
panels at the rear left corner. Align the bracket
holes with corresponding positioning dimples in
the top boiler and bottom boiler left side panels,
then secure bracket with the screws.
g. Repeat above procedure to install the forth
Stacking Boiler Attachment Bracket to secure
stacked boiler right side panels at the rear right
corner.
3. When installing stackable boiler
combinations observe the following
guidelines:
a. Venting - Top and bottom boilers must have their
individual vent piping and vent terminals.