PLUMBING CONNECTIONS
WARNING: PLUMBING CONNECTIONS MUST COMPLY WITH APPLICABLE SANITARY, SAFETY AND PLUMBING CODES.
Connect the water supply line to the 3/8" NPT (internal thread) copper tube inlet. The 3/8" water line supplies water to both the generator tank and the cooling system where steam is condensed before entering the drain line. Install the line strainer provided. A manual shutoff valve must be provided convenient to the steamer.
DRAIN CONNECTIONS
The drain connection (Fig. 2) must be 1" IPS down, preferably with one elbow only, maximum length of 6 feet, and piped to an open gap type drain. CAUTION: In order to avoid any back pressure in the steamer, do not connect solidly to any drain connection.
WATER QUALITY
DRAIN VENT
BY CUSTOMER
20 (500) MIN .
2 (51)
| 1 1/4 NPT TO OPEN |
| GAP DRAIN |
BY CUSTOMER |
Fig. 2
The water supply connected to this steamer should contain no more than 2.0 grains of hardness per gallon with pH from 6.5 to 8.0. This degree of hardness and pH can easily be obtained with the use of a properly maintained water softener.
Water supplies vary from one location to another. A local water treatment specialist should be consulted before installing any steam generating equipment.
Untreated water contains scale producing minerals which can precipitate onto the surfaces in the boiler. Due to the temperatures in the boiler, the minerals can bake onto the surfaces and components. This can result in early component failure and reduced product life.
Mineral scale on components causes several problems:
1.The surfaces of the heating devices become coated with scale, reducing the heat transfer efficiency. This can produce hot spots on the heating elements and result in premature failure.
2.The water level probes become coated with scale. Scale will bridge across the probe insulator from the metal extension which senses the water level in the boiler shell. Once this scale becomes wet, the water level control is unable to maintain the proper water level in the boiler. This situation may cause an electric heating element to fail if the element is not adequately covered by water.
Strainers and filters will NOT remove minerals from the water.
Refer to REMOVAL OF LIME SCALE DEPOSITS, page 12.
VENT HOOD
Some local codes may require the steamer to be located under an exhaust hood. Information on the construction and installation of ventilating hoods may be obtained from Vapor Removal from Cooking Equipment, NFPA standard No. 96 (latest edition).
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