tekmar 654 Snow Melting Control Quick Start - Manual (Page 3)

3 Product design, software and literature are Copyright ©2014 by
tekmar Control Systems Ltd., A Watts Water Technologies Company All specifications are subject to change without notice.
Printed in Canada. 654_Q - 02/14.
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
8. Critical Settings
Item Field Description
APPLICATION MODE
Select the control application mode.
PWM = Hydronic Pulse Width Modulation.
BOIL = Hydronic boiler heats snow melting
system.
MIX = Hydronic mixing valve or injection
pump heats snow melting system.
ELEC = Electric snow melt.
090 = Tandem Snow/ Ice Detection
Default = PWM
SNOW / ICE SENSOR
Select if a Snow / Ice Sensor 090 or 094, or
Snow Sensor 095 is installed.
Default = 090
SLAB SENSOR
Select if a Slab Sensor 072 or 073 is installed
to measure the slab temperature.
Default = ON
SLAB PROTECTION
Select if the slab should be protected from
large temperature differentials to avoid
cracking the concrete due to high tensile
stress.
Default = ON
OUTDOOR/BOILER RETURN SENSOR
Select if the Out/Bret wiring terminal is
connected to an outdoor sensor or a boiler
return sensor.
Default = OUT
The System Menu provides settings on how to configure and operate the mechanical equipment.
Item Field Description
ECONOMELT
EconoMelt allows the user to mechancially
remove snow then manually start the system
to melt the thin snow layer or ice.
Default = OFF
tekmarNet ® SYSTEM PUMP
Select if the system pump located on the
tekmarNet
® System Control should operate
when the snow melt zone is heating.
Conditions: Application Mode is set to
PWM, Boil or Mix and Boiler Type is set
to CTRL (tN4 control).
Default = ON
AUXILIARY RELAY
Select if the auxiliary relay should function
as system pump or as an alert.
Default = SYS
MAXIMUM MELT TIME
Select to limit the amount of melting run
time.
Default = 3.0 days