Install Instructions

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© 2019 tekmar 671
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D - 08/19
Melt – EconoMelt
When a Snow/Ice Sensor 090 or 094 is installed, the installer
can choose to select to either automatically or manually start
the snow melting system. Selecting EconoMelt to On allows
snow removal using a snow plow or shovel. The remaining thin
layer of snow or ice that mechanical snow removal methods
are unable to remove can be melted using the manual start
operation. The snow melting system stops when the sensor
is dry. The factory default for EconoMelt is Off.
Push Melt Button
Gateway 482 or 486 Melt Message
Manual Melt Switch
090 and Slab Dry and
Add Melt Time Elapses
WWSD
Press Stop Button
Melting
Manual
Start/
Auto
Stop
Off
Exits
CW
CO
Melt
Suspended
Enters
CWCO
Melt – Automatic Start and Timed Stop
Automatic start with a timed stop operation requires the instal-
lation of a Snow Sensor 095. The sensor is aerial mounted
on a pole near the melting surface. It is highly recommended
to also install a Slab Sensor 072 (20’ or 6 m cable) or 073
(40’ or 12 m cable) in order to regulate the slab temperature
and operate the snow melting system at the highest possible
efficiency. The control continually monitors the snow sensor
for the presence of moisture and slab temperature conditions
in which snow or ice may be present. When moisture is
detected, the control will show “Sensor Water Status Wet”
in the Slab Status menu. When the sensor is dry the control
will show “Sensor Water Status Dry”. The control includes a
Sensitivity setting in the Temperatures menu that allows the
installer to adjust the amount of moisture required to start and
stop the melting operation. In areas with low amounts of dust
and/or air pollution, the sensitivity may need to be increased.
The default sensitivity setting is Auto. This setting allows the
control to automatically determine the best suitable sensitivity
setting for the installation.
When moisture is detected and the control is not in WWSD
or CWCO or Away, the control automatically starts the snow
melting system. The snow melting system operates to heat
the slab to the slab target temperature and continues to
operate until the time set by the Manual Melt Run Time in the
Temperatures menu elapses. If the 095 re-detects water, the
timer is restarted to operate for the full run time.
Snow
Sensor 095
095 Detects Water
Manual Melt Run Time Elapses
WWSD
Push Stop Button
Gateway 482 or 486 Stop Message
CWCO
Melting
Auto
Start/
Timed
Stop
or
Idle
Off
095 Redetects Water
Additional Melting Time
Dry
Snow Ice Sensor
A Snow/Ice Sensor 090 or 094 automatically shuts off the
snow melting system when the water sensor is dry. Due to
the construction of the slab and the layout of the heating pipe
or electrical cable, there may be areas that do not melt com-
pletely. The Additional Melt Time setting in the Temperatures
menu allows the installer to set addition melting time after the
sensor is dry.