6.4.3 Drain connection
Drain connection standards and regulations
Make sure to comply with all national and state laws and regulations, as well as with all applicable lo‐
cal requirements and regulations set forth by the relevant local utilities and authorities, that apply to
the drain connection and to the wastewater's properties. These include, but are not limited to:
■
Latest edition of the International Plumbing Code published by the International Code Council (ICC)
or the Uniform Plumbing Code published by the International Association of Plumbing and Mechan‐
ical Officials (IAPMO)
■
The Food Service Sanitation Manual published by the Food and Drug Administration (FDA)
■
The standards published by the National Sanitation Foundation (NSF)
Rules for safely installing the drain connection
In order to prevent hazards related to an improperly installed drain connection, make sure to observe
the following rules:
■
The drain pipes' material must be able to withstand a sustained temperature of 140 °F.
■
The drain pipe must not taper or have any other diameter-reducing deformations at any point.
■
The drain pipe's minimum diameter will depend on the pipe's total length and the number of elbows
used. For a pipe length of up to 6 feet and a maximum of two elbows, the minimum inner diameter
will be 1½". For a pipe length of 6 to 12 feet or a maximum of three elbows, the minimum inner
diameter will be 2".
■
The drain pipe must have a downward slope of min. 5% (3°)
■
Do not directly connect the unit drain to the sewer system vertically.
■
The connection between the drain pipe and the sewer system must be located outside the perime‐
ter of the unit's base area. Due to potential wastewater vapors, there must not be a drain connec‐
tion or open sewer line below the unit's base area.
■
The drain connection must be implemented using a rigid, naturally ventilated pipe.
■
A ventilation clearance of at least 1" must be maintained between the end of the drain pipe and the
upper edge of the drain or pan.
■
Do not connect any other units to the combi oven's drain pipe.
■
Do not connect the combi oven to any other units’ drain pipe.
6 Installation
Installation Manual
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