Cleveland steamcraft 21-CET-8 Service Manual page 23

Figure 2-13. Drain Layout
NOTE:
The drain line must be free air vented, have gravity flow from
steamer, and terminate outside the perimeter of the unit
The one inch minimum clearance between the drain opening and floor
drain provides the SteamCraft 3.1 with free air venting. The drain outlet
discharges exhaust steam and hot condensate from the steamer. The
drain outlet must be free air vented to equalize the pressure in the
SteamCraft 3.1 with the atmosphere. Without a free air vent, either high
or low pressure in the compartment will cause malfunction or damage.
• Pressure build up in the steamer will cause steam and hot water
leakage around the door.
• A vacuum will implode the steamer and cause permanent damage.
1. The drain lines must be installed in compliance with the Basic Plumbing
Code of the Building Officials and Code Administrators International, Inc.
(BOCA), and the Food Service Sanitation Manual of the Food and Drug
Administration (FDA).
2. The total length of pipe and number of bend fittings required to reach the
open drain determines the pipe size used to extend the drain line to an
open drain.
• If the drain outlet extension requires six feet or less of pipe, and no
more than two elbows are required, use 1-1/4-inch pipe and fittings.
• If the drain outlet extension requires six to twelve feet of pipe, or
requires three or more elbows, use 2-inch pipe and fittings.
3. The drain line must have a gravity flow from the SteamCraft 3.1 drain
outlet to the floor drain. Do not install a trap in the drain line.
4. Free air venting requires a minimum of one inch clearance between the
end of the drain line and the top of the floor drain.
5. Do not connect the steamer drain to drains or plumbing of any other
equipment If drains of two or more units are connected together
• Low pressure can develop, causing an implosion and physical collapse
of the steamer.
• Drainage from another unit can flow back into compartment of the
steamer.
Model 21-CET-8 Service Manual Page 15