PB Heat 211A - Manual (Page 4)

2
PREINSTALLATION
A. ACCESSIBILITY CLEARANCES
1. The following recommendations allow for reasonable
access to the boiler. Local codes or special
conditions may require greater clearances.
a. For servicing the boiler: provide 48" (1219 mm)
between the control manifold and adjacent wall
or other appliance.
b. For access to draft hood or passage to access the
boiler control manifold(s): provide 48" (1219 mm)
between the side of the boiler and adjacent wall or
other appliance.
c. See Figure 1.1. Clearances with an “S” are
minimum clearances for service accessibility.
B. COMBUSTIBLE CONSTRUCTION
CLEARANCES
1. This boiler is design certified for the following
clearances to combustible construction.
• 24" (610 mm) between the front, top, sides and
rear of the jacket.
• 6" (152 mm) from steam and hot water pipes
• 6" (152 mm) from vent connector
• See Figure 1.1. Clearances with a “C” indicate
minimum clearances from combustible
construction.
C. AIR FOR COMBUSTION AND
VENTILATION
1. Adequate combustion air and ventilation air must be
provided for this appliance in accordance with the
section of the National Fuel Gas Code entitled, “Air
for Combustion and Ventilation” or applicable
provisions of the local building code. Subsections 2
through 8 as follows are based on the National Fuel
Gas Code requirements.
1. PREINSTALLATION
The equipment shall be installed with those installation requirements of the authority having jurisdiction or, in the
absence of such requirements, to the current edition of the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or
CAN/CGA B149 Installation Codes.
Where required by the authority having jurisdiction, the installation must conform to American Society of
Mechanical Engineers Safety Code for Controls and Safety Devices for Automatically Fired Boilers, ASME CSD-1.
NOTICE
Read these instructions carefully before beginning the installation.
Study the control folder and consult drawings.
A shipping list is enclosed with each boiler, listing the items packed at the factory. Check the list as you unpack parts. If any parts
are missing or damaged, report the problem to the delivering carrier immediately.
Figure 1.1: Clearance Requirements