Installation; Code Requirements; Removing An Existing Boiler - IBC Sl Series Installation & Operating Manual

3.0 Installation

Refer to the Specifications section for dimensional drawings and connection specifications. Use these
drawings to find a suitable location for the appliance.

3.1 Code requirements

The appliances are tested and certified under CSA 4.9 / ANSI Z21.13. Below are the code
requirements for every installation.
Canada
Conform to local codes, or in the absence of
these, with the latest editions of CAN/CGA
B149.1 and the Canadian Electrical Code Part 1
CSA C22.2 No. 1.
Where required by jurisdiction, installation must
conform to the Standard for Controls and Safety
Devices for Automatically Fired Boilers,
ANSI/ASME CSD-1.
If there is any conflict, follow the more stringent
regulations.
Table 2 Code requirements by country

3.2 Removing an existing boiler

When an existing boiler is removed from a common venting system, the common venting system
may be too large for proper venting of the appliances that remain connected to it. When resizing
any portion of the common venting system, use the minimum size according to the appropriate
tables in the National Fuel Gas Code, ANSI Z223.1 - latest edition. In Canada, follow the B149.1
Installation Code.
When removing an existing boiler, the following checks must be carried out for each of the
appliances still connected to the common exhaust system, by operating them one at a time:
Seal any unused opening in the common venting system.
Visually inspect the venting system for proper size and horizontal pitch. Determine that there
is no blockage or restriction, leakage, corrosion and other deficiencies that could cause an
unsafe condition.
(Where practical) Close all building doors and windows such as doors adjacent to
appliances remaining connected to the common venting system and other spaces.
US
Conform to the current National Fuel Gas Code
ANSI Z223.1 and the National Electrical Code
ANSI/NFPA 70.
Where required by jurisdiction, installation must
conform to the Standard for Controls and Safety
Devices for Automatically Fired Boilers,
ANSI/ASME CSD-1.
If there is any conflict, follow the more stringent
regulations.
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