brondell FreshSpa Warm FSW-20 Guide D'utilisation page 12

Installation
b. If you have connected the hot water supply, then remove the
pressure cap from the HOT connection on backside of the bidet
attachment and connect the open end of the Hot Water Flex Tubing
to the HOT connection using the same instructions from Step 5e.
8) Turn on Water Supply & Check for Leaks
a. Open the main water supply valve for all water connections (Cold
only or Hot and Cold) and check for leaks .
b. Wait 5-10 minutes, check again and if there are no leaks continue .
Note: if there is any leaking, check all rubber washers and make
sure all water connections are tight and secure. If necessary, you
can use plumbers tape for any leaking connections.
Fully installed view with both HOT and COLD water connections
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