Preface; Venting Multiple Boilers; Terminal Spacing - Crown Boiler PHNTM080 Installation Instructions Manual

These instructions are meant to provide information specific to multiple boiler ("Lead-Lag") installations of the following
models:
• PHNTM080
• PHNTM100
• PHNTM120
• PHNTM150
• PHNTM180
For larger Phantom models, refer to the instructions provided with that boiler for information on multiple installations.
Boilers covered by these instructions apply to the above models where the complete model number ends in "C" (example:
PHTM180HNT1SUC). Consult the factory before attempting multiple boiler installations where the above models have a
different last letter.
These instructions cover only multiple boilers installations consisting solely of the above models. It is also generally
recommended that all boilers on the installation be of the same size.
These instructions provide supplemental information. Except where specifically stated, they do not replace
the instructions in the manual provided with the boiler. Failure to follow all applicable instructions could
result in property damage, personal injury, or loss of life.
• Asphyxiation Hazard. Do not manifold ("common vent") any portion of multiple boiler vent or intake
systems. Doing so may result in unreliable operation, boiler damage, personal injury, or loss of life.
• Failure to maintain the proper clearances between adjacent terminals may result in aspiration
of flue gas into the combustion air supply, resulting in unreliable operation, property damage,
personal injury, or loss of life.
The vent and air intake systems must exactly match one of the vent options described in Section VII of the Phantom 80-180
installation manual. Manifolding of either the vent or intake systems is prohibited.
Spacing requirements between the terminals of adjacent boilers is as follows:
• Horizontal Fitting Terminals (Figures 2.1, 2.2) – A horizontal spacing of 36" between any vent terminal and any
intake terminal is recommended; however, this spacing may be reduced to 12" if necessary (Figure 2.1). Maintain a
minimum spacing between adjacent intake terminals of 4" as shown in Figure 2.2.
• Low Profile Terminals (Figure 2.3) – Maintain a minimum of 12" between the adjacent inlet and outlet openings as
shown in Figure 2.3.
• Horizontal Ipex or Diversitech Concentric Terminals (Figure 2.4) – At their closest point adjacent "bells" must
either be within 4" of each other OR greater than 24" apart as shown in Figure 2.4.
• Vertical Fitting Terminals (Figure 2.5) – Maintain at least 12" horizontally (center to center) between the exhaust
terminal of one boiler and the intake terminal of another boiler as shown in Figure 2.5.
• Vertical Ipex, Diversitech, or Duravent PPs Concentric Terminals (Figure 2.6) -At their closest point adjacent
"bells" must either be within 4" of each other OR greater than 24" apart as shown in Figure 2.6.
I Preface
WARNING
II Venting Multiple Boilers
WARNING
A. Terminal Spacing
4