2 CVS-21HA.rev.03
FEATURES ........................................................................................ 3
PRECAUTIONS ................................................................................. 5
LOCATION OF THE CONTROLS...................................................... 6
INSTALLATION.................................................................................. 9
USING THE CONTROLLER .............................................................. 13
Values flashing on the display ....................................................... 13
How to select the temperature unit ................................................ 13
How to view and reset temperatures ............................................. 14
To view the room temperature ................................................... 14
To view the minimum and maximum temperatures ................... 14
To reset the minimum and maximum temperatures .................. 15
Parameter descriptions .................................................................. 15
Parameter factory settings ............................................................. 21
How to adjust the parameters ........................................................ 22
Parameter adjustment ranges........................................................ 28
Alarms............................................................................................ 29
How to lock the parameters ........................................................... 30
HOW THE CONTROLLER OPERATES ............................................ 31
TROUBLESHOOTING ....................................................................... 34
TECHNICAL SPECIFICATIONS ........................................................ 37
FOR CUSTOMER USE
This controller has a serial number
located on the side of the enclosure.
Please record this number and retain
it for your records.
Model number
Serial number
CVS-21HA
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