7
DRAIN CONNECTIONS
The drain connection must be 1" (25 mm)
IPS down, preferably with one or two
elbows only, maximum length 6 feet (1830
mm) and piped to an open gap type drain
(Figure 1). Drain pipe should be either iron
or copper. DO NOT use PVC pipe
– PVC
pipe may lose its rigidity or glue may fail.
CAUTION: To avoid
injury or damage to the
steamer, do not connect
solidly to any drain
connection.
WATER QUALITY
The water supply connected to the steam generator should meet the following
guidelines:
Failure to comply with water quality statement on page 4 may void the warranty.
Water supplies vary from one location to another. Other factors affecting steam
generation are iron content, chlorides, and dissolved gasses. 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 section in this manual.
