tekmar 521 Programmable Thermostat Quick Start - Manual (Page 3)

© 2014 521_Q - 02/14 3 A Watts Water Technologies Company
7. User Interface
6. Switch Settings
Switch Position Action
1
ON
LOCK ACCESS LEVEL
Thermostat is locked and the access level cannot be changed. Set
to Lock when installation has been completed.
OFF
UNLOCK ACCESS LEVEL
Thermostat is unlocked and the access level may be changed. Go
to the Setup menu to change the access level. Set to Unlock during
the installation process.
2
ON
H/C/F
Thermostat is configured to operate one stage heating, one stage
cooling and fan.
OFF
1H OR 2H
Thermostat is configured to operate one or two stage heating with
a fan.
Sa
Floor
F
F
MIN
Heat On Cool On
Room Floor
Heat Cool
Off
MAX
MODE
Fr Th We Tu Mo Su
P
ON
OFF