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PO. Box 726 n TULSA, OK 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com
GA-2318, R1
Sheet 14 of 15
May 2008
SPECIFICATIONS
Electrical
Power Requirements
120 VAC, 50/60 hz, 480VA
Control Relays – Outputs
120 VAC, Pilot Duty, 120VA
Power Supply – Sensors
24 VAC, Class 3, 12VA
Temperature Sensor Supply
5 VDC, Class 2, 0.5VA
Mechanical
NEMA 12 non-metallic enclosure
System Memory
Non-Volatile: no data loss
with a loss of system power
Dimensions
12.375” W x 10.25” H x 4.75” D
Certification
Environmental Specifications
Ambient Operating Temperature Range
-4°F to 160°F / -20°C to 70°C
Storage Temperature
-4°F to 185°F / -20°C to 85°C
Relative Humidity
0 to 90% RH, non condensing
SENSOR EXTENSION WIRE SPECIFICATIONS
Aerial Sensor SMAS-1
3 Conductor Instrumentation Cable, #18-20AWG, shielded or unshielded,
common conductors such as twisted pair communications wire, telephone wire,
electrical building wire and doorbell wire is not acceptable.
Manufacturer: Belden #8770 or equal
Gutter Sensor SMGS-1
3 Conductor Instrumentation Cable, #18-20AWG, shielded or unshielded,
common conductors such as twisted pair communications wire, telephone wire,
electrical building wire and doorbell wire is not acceptable.
Manufacturer: Belden #8770 or equal
Temperature Sensor SMTS-1
3 Conductor Instrumentation Cable, #18AWG, unshielded, common conductors
such as twisted pair communications wire, telephone wire, electrical building
wire and doorbell wire is not acceptable.
Manufacturer: Belden #5301UE or equal
Pavement Sensor SMPS-1
4 Conductor Instrumentation Cable, #18AWG, shielded, common conductors
such as twisted pair communications wire, telephone wire, electrical building
wire and doorbell wire is not acceptable.
Manufacturer: Belden #9418 or equal