Foundation Requirements; Removal Of Existing Boiler From Common Vent System - UTICA BOILERS UB90-50 Installation Manual

G. Foundation Requirements
Boiler must be placed on level surface. Boiler is NOT to be
installed on carpeting.
Notes:
If boiler is not level condensate drain lines will not function
properly. Adjustable feet are located on the boiler to make
up for minor surface irregularities or tilt.
Wood frame or blocks may be used to raise boiler to main-
tain drain pitch or to be above external condensate pump
reservoir.
H. Removal Of Existing Boiler From Common Vent
System
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 appliances remaining connected to it. 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 re-
strictions, leakage, corrosion and other deficiencies which
could cause an unsafe condition.
3.
Insofar as is practical, close all building doors and win-
dows and all doors between the space in which the ap-
pliances remaining connected to the common venting
system are located and other spaces of the building. Turn
BEFORE INSTALLING THE BOILER
4.
5.
6.
7.
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on clothes dryer and any appliance not connected to the
common venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhaust, so they will operate
at maximum speed. Close fire dampers.
Place in operation the appliance being inspected. Follow
the lighting instructions. Adjust thermostat so appliances
will operate continuously.
Test for spillage at the draft hood relief opening after 5
minutes of main burner operation. Use the flame of a
match or candle, or the smoke from a cigarette, cigar or
pipe.
After it has been determined that each appliance remain-
ing connected to the common venting system properly
vents when tested as outlined above, return doors, win-
dows, exhaust fans and any other gas-burning appliance to
their previous condition of use.
Any improper operation of the common venting system
should be corrected so the installation conforms with the
National Fuel Code, NFPA-54/ANSI -Z223.1-latest revi-
sion, or section 5 of CSA-B 149 for Canadian standards.
When resizing any portion of the common venting system,
the common venting system should be resized to approach
the minimum size as determined using the appropriate
tables in part 11 in the National Fuel Gas Code, NFPA-54/
ANSI- Z223.1-latest revision, or section 5 of CSA-B 149
for Canadian standards.