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Testing the relay outputs
The control includes an Override menu to
check if the control’s relays are operating
and that the control is wired correctly to the
snow melting equipment.
1. Press and hold the Home button for
3 seconds.
2. Press NEXT to navigate to the Override
menu.
3. Press ENTER to enter the Override
menu.
4. Select Manual Override to Hand.
5. For hydronic systems, set System Pump
to On. The system pump should now be
operating.
6. Set Heat Relay to On. The boiler or
electric heating cables should start
heating.
7. For modulating boilers, change the Boiler
Percent from 0 to 100%. The boiler
should be firing.
8. Select the Override Time after which the
control resumes normal operation.
9. Exit the Manual Override by selecting
Auto.
Manual override —
maximum heat
In hydronic application modes, the control
includes a Maximum Heat operation where
the control operates the snow melting
system to maintain the maximum allowed
heating setpoints. This allows testing of the
snow melting system during warm weather.
1. Press and hold the Home button for
3 seconds.
2. Press NEXT to navigate to the Override
menu.
3. Press ENTER to enter the Override
menu.
4. Select Manual Override to Max.
5. Select the Maximum Heat Time after
which the control resumes normal
operation.
6. Exit the Manual Override by selecting
Auto.
Manual override — test
When operating an electric snow melting
system, the control includes a Test
operation where the electrical heating
cables can be energized for 10 minutes
after which the control resumes normal
operation. This allows testing of the electric
snow melting system during warm weather.
1. Press and hold the Home button for
3 seconds.
2. Press NEXT to navigate to the Override
menu.
3. Press ENTER to enter the Override
menu.
4. Select Manual Override to Test.
5. Exit the Manual Override by selecting
Auto.
Manual override — purge
When operating a hydronic snow melting
system, it is necessary to purge and
bleed all air out of the system. The control
includes a Purge operation where the
System Pump is turned on to assist in
purging air from the system.
1. Press and hold the Home button for
3 seconds.
2. Press NEXT to navigate to the
Override menu.
3. Press ENTER to enter the
Override menu.
4. Select Manual Override to Purge.
5. Select the Maximum Purge Time
after which the control resumes
normal operation.
6. Exit the Manual Override by
selecting Auto.
