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OPERATION INSTRUCTIONS
The MSA‑1 snow melting control is designed to send a signal to the MSC‑1 control panel indicating when snow or ice
conditions exist. The MSC‑1 control panel uses this information, along with temperature data from the TS‑1 to determine
when snow‑melting equipment should be energized.
The MSA‑1 may be tested for functionality if outside temperature is below 3°C (38°F), Apply a small amount of moisture onto
the surface of the moisture sensor, the MSC‑1 should energise the heating equipment in the associated zone. After this test,
dry the sensor, the heating equipment in the associated zone should de‑energize after the pre‑set hold time.
Every year, in the fall the MSA‑1 must be inspected for physical damage and to clean up the snow sensor surface. To clean
the snow sensor surface:
1. Disconnect MSA‑1 from the power supply.
2. With a clean wet swab clean up the surface of the snow sensor.
3. Reconnect MSA‑1 to the power supply.
ELECTRICAL SPECIFICATIONS
Environmental
Working / Storage temperature
Humidity environment
Supply requirements
Power supply voltage
Maximum amperage
Mounting connector
Connection Leads length
©2009 Easy Heat
‑40°C (‑40°F) to 70°C (160°F)
0 to 100 %
24VAC
500mA
1/2" NPT
10 feet
www.easyheat.com
MSA‑1 Installations & Operation Instructions
14068-001 Rev. 3
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