4.2.1 Closing the housing
✱ Make sure that the plastic seal ( 1 ) in the housing base ( 3 ) is seated cor-
Thermostats as
TW, STW (STB),
rectly.
STB
✱ Place the housing top ( 2 ) onto the housing base ( 3 ).
( 1 )
✱ Tighten the cover screws ( 4 ).
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( 4 )
( 4 )
( 2 )
( 3 )
hex
4 Installation
( 4 )
( 4 )
cable gland
M 20x1.5
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