Specifications

	Electrical	Mechanical
	Power Requirements	NEMA 12 non-metallic enclosure
	120 VAC, 50/60 hz, 480VA
	Control Relays – Outputs	System Memory
	120 VAC, Pilot Duty, 120VA	Non-Volatile: no data loss
	Power Supply – Sensors	with a loss of system power
	Power Supply – Sensors	Dimensions
	24 VAC, Class 3, 12VA	Dimensions
	Temperature Sensor Supply	12.375” W x 10.25” H x 4.75” D
	Temperature Sensor Supply
	5 VDC, Class 2, 0.5VA

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

3Conductor 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

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

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

Emerson SMMC-3 manual Sensor Extension Wire Specifications

SPECIFICATIONS