7
335122-201 REV. B LIT TOP
A08435
Fig. 3 -- Clearances to Combustibles
Step 3 -- Combustion and Ventilation Air
S US: Section 9.3 of the NFPA 54/ANSI Z223.1--2006, Air for
Combustion and Ventilation
S CANADA: Part 8 of the CAN/CSA--B149.1--05, Venting
Systems and Air Supply for Appliances
Step 4 -- Duct Systems
S US and CANADA: Air Conditioning Contractors Association
(ACCA) Manual D, Sheet Metal and Air Conditioning
Contractors National Association (SMACNA), or American
Society of Heating, Refrigeration, and Air Conditioning Engineers
(ASHRAE) 2001 Fundamentals Handbook Chapter 34 or 2000
HVAC Systems and Equipment Chapters 9 and 16.
Step 5 -- Acoustical Lining and Fibrous Glass Duct
S US and CANADA: current edition of SMACNA, NFPA 90B as
tested by UL Standard 181 for Class I Rigid Air Ducts
Step 6 -- Gas Piping and Gas Pipe Pressure Testing
S US: NFPA 54/ANSI Z223.1--2006; chapters 5, 6, 7, and 8 and
national plumbing codes.
S CANADA: CAN/CSA--B149.1--05 Parts 4, 5, and 6, A, B, E,
G, and H.
In the state of Massachusetts:
S This product must be installed by a licensed plumber or gas fitter.
S When flexible connectors are used, the maximum length shall
not exceed 36 in. (914 mm)
S When lever type gas shutoffs are used they shall not exceed 36 in.
(914 mm).
S The use of copper tubing for gas piping is not approved by the
state of Massachusetts.
Step 7 -- Electrical Connections
S US: National Electrical Code (NEC) ANSI/NFPA 70--2008
S CANADA: Canadian Electrical Code CSA C22.1
352AAV
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