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NOTE: 1. 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.
2. Wood frame or blocks may be used to raise boiler to maintain 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 restrictions, leakage, corrosion and other deficiencies which could
cause an unsafe condition.
3. Insofar as is practical, close all. building doors and windows and all doors between the
space in which the appliances remaining connected to the common venting system are
located and other spaces of the building. Turn 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. Do not operate a
summer exhaust fan. Close fire dampers.
4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust
thermostat so appliances will operate continuously.
5. 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.
6. After it has been determined that each appliance remaining connected to the common venting
system properly vents when tested as outlined above, return doors, windows, exhaust fans
and any other gas-burning appliance to their previous condition of use.
7. 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 revision,
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.
The boiler should be placed to provide the most direct connections to the combustion air, vent
and system piping as possible.
Place crated boiler as close to selected location as possible and uncrate boiler. The uncrated
boiler may be moved into position with an appliance dolly or 2-wheel hand truck. The dolly or hand
truck should be inserted under the left hand side of the boiler. It is possible to slide the boiler for a
short distance on a smooth floor or surface.
NOTE: Refer to manual section LOCATING THE BOILER for required clearances for servic
ing and maintenance.
PLACING THE BOILER