11
Installation Precautions
Digital Temperature Controllers (Simple Type) User’s Manual (H211)
z Waterproofing
The degree of protection is as shown below. Sections without any specification on their degree of
protection or those with IP@0 are not waterproof.
Front panel: IP66
Rear case: IP20, Terminal section: IP00
When waterproofing is required, insert the Waterproof Packing on the backside of the front panel.
The degree of protection when the Waterproof Packing is used is IP66. To maintain an IP66 degree
of protection, the Waterproof Packing must be periodically replaced because it may deteriorate,
shrink, or harden depending on the operating environment. The replacement period will vary with
the operating environment. Check the required period in the actual application. Use 3 years or
sooner as a guideline. If the Waterproof Packing and Port Cover are not periodically replaced,
waterproof performance may not be maintained. If a waterproof structure is not required, then the
Waterproof Packing does not need to be installed.