Critical settings – tekmar 552 Thermostat Quick Start User Manual
Page 4

All specifications are subject
to change without notice
4
552_Q - 02/14.
Product design, software and literature are Copyright ©2014 by tekmar Control Systems Ltd., 
A Watts Water Technologies Company. Head Offi ce: 5100 Silver Star Road, Vernon, B.C. 
Canada V1B 3K4, 250-545-7749, Fax. 250-545-0650 Web Site: www.tekmarControls.com
For a full list of settings and operational details, please refer to the thermostat 
Installation and Operation Manual (552_D) included with compatible 
tekmarNet
®
controls or download the brochure from www.tekmarcontrols.com
8. Critical Settings
The following settings are essential to the successful operation of the system.
Step 1: 
Set switch setting #1 and tekmarNet
®
system control located in the mechanical
room to Unlock to change Access level to Installer. Return to Lock setting once installation 
has been completed.
Step 2: Press and hold “Home” button for 3 seconds to enter programming menus.
Step 3: Touch NEXT to locate the Setup Menu and touch ENTER.
Setup Menu Settings
SENSOR 1
Select to the type of sensor connected to 
auxiliary sensor input 1.
Range: OFF, ROOM, FLOR (floor), OUT 
(outdoor)
Default: OFF
SENSOR 2
Select to the type of sensor connected to 
auxiliary sensor input 2.
Range: OFF, ROOM, FLOR (floor)
Default: OFF
ROOM SENSOR
Select whether the built-in room 
temperature sensor is on or off.
Range: OFF or ON
Default: ON
W1 TERMINAL UNIT
Select the terminal unit type of the first 
stage of heat W1.
Range: CTRL, HRF1, HRF2, CONV, 
COIL, OTHR 
Default: CTRL
Setup Menu Settings
W1 PUMP
Select whether the boiler system pump 
or mix system pump on a tekmarNet
®
system control should operate while the 
first stage of heat W1 is operating.
Range: OFF or ON
Default: ON
W1 THERMAL MOTOR
Select whether the first stage of heat W1 
operates a thermally actuated zone valve 
(wax actuator). When set to ON, there is a 
3 minute delay before operating the pump 
and any heat sources.
Range: OFF or ON
Default: OFF
W CYCLES PER HOUR
Select the number of heating cycles 
per hour. Only available when the 
thermostat is not connected to a 
tekmarNet
®
System Control.
Range: SYNC, AUTO, 2 to 12
Default: SYNC
