Crown Boiler PHNTM399, Инструкция по установке и эксплуатации

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III. Pre-Installation and Boiler Mounting
G. General (continued)
H. Boiler Stacking
1. For installations with unusually high space heating
and/or domestic hot water heating loads, where
employing 2 Phantom boilers will offer the benefits
of greater operational efficiency, floor space savings
and boiler redundancy, Phantom boilers may be
installed stacked maximum one boiler on top of
another. Refer to Table 3 “Phantom Boiler Model
Stacking Combinations” for details.
Table 3: Phantom Boiler Model Stacking
Combinations
Bottom Boiler Model Top Boiler Model
PHNTM399
PHNTM399
PHNTM500 PHNTM399 or PHNTM500
2. To field assemble individual Phantom boilers into a
stackable configuration, use the steps below:
a. Position the bottom boiler first. 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 Phantom boiler is factory packaged with
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]. Locate and remove the
brackets and the hardware. The stacking boiler
attachment bracket has three 7/32” diameter
holes punched in a triangular pattern. See
Figure 3 “Stacking Boiler Attachment Bracket
Placement”.
c. Phantom 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 specific
pattern to compensate for Phantom boiler model
variable depth.
d. Position the upper boiler on top of the bottom
boiler and align boiler front doors and sides flush
with each other.
• Place first 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 verified, 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 fourth
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.
WARNING
Asphyxiation Hazard. No common manifold
venting is permitted. Each boiler must have its
own individual vent and combustion air pipes
and terminals.
For sidewall venting individual model vent
terminals must terminate no closer than 12
in. (300 mm) horizontally and 3 ft. (900 mm)
vertically from each other in order to prevent
combustion air contamination. For vertical
through the roof venting, individual vertical
vent terminals, if level with each other, must
be spaced no closer than 12 in. (300 mm)
horizontally. If vertical terminals cannot end in
one plane, they must be spaced no closer than 3
ft. (900 mm) horizontally.
Follow instructions in Section IV “Venting”
of the manual for specifics of individual boiler
vent termination. Follow instructions in Section
V “Condensate Disposal” for each individual
boiler flue gas condensate line construction and
condensate disposal. Terminating individual
boiler condensate lines into common pipe prior
to drain disposal is permissible, providing
common pipe has sufficient flow capacity
to handle combined condensate volume of
stackable combination.
b. Gas Piping - Follow instructions in Section