IR Energy ETSV Series, Руководство пользователя

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Series ETSV - Models 40, 80 September 14, 2020 Page 15
Common Vertical Venting
• Common vent sizing information is defined in the appropriate gas installation code (Refer to ANSI Z223�1 and CSA
B149�1 for sizes and installation information)�
• LT276 Series ETSV 59 Jan� 30, 2020
• Connection locations to the common vent should be offset to avoid pressure interferences between heaters, refer to ANSI
Z223�1 and CSA B149�1�
• Use of approved thimble to pass through combustible roof material is required� Additionally, B type vent materials are re-
quired for stacks above the roof line� Use of approved vent cap is required�
• All heaters to a common vent are recommended to operate at the same time� Connect the electrical circuit to the same
thermostat to ensure simultaneous operation�
Vertical Venting
• The heater operates at a negative vent pressure�
• Refer to the National Fuel Gas Code, ANSI Z223�1 (NFPA 54) in the USA and CSA B149�1 Installation Codes in Canada,
to size for Category I (B-vent) fan assisted appliances�
• Minimum vent pipe size is 4”(10cm) for an individual heater
• Use of an approved thimble to pass through combustible roof materials is required�
• Use of an approved vent cap is required�
• Check local codes for vertical vent size�
Vented Operation
• Requirements for combustion air supply and dilution air vary by jurisdiction, building type and specific installation details� See
local codes for guidance� In general, fresh air ventilation must be provided to the building space at 3 cfm per 1000 BTU/Hr
in Canada and 4 cfm per 1000 BTU/h in USA� The exhaust fan must be electrically interlocked with the heater�
• Optional outside air supply is not recommended for unvented heaters due to possible pressure imbalances in the building
space�
• Ensure that minimum combustible clearances are maintained for unvented heaters� Refer to Clearance to Combustibles, for
required clearance dimensions�
Horizontal Venting