Page 2 - TABLE OF CONTE NTS
TABLE OF CONTE NTS GENERAL INFORMAT ION ...........................................................................................................3 Pre-Programmed Configuration .............................................................................................................................
Page 3 - G E N E R A L I N F O R M AT I O N; PRE-PROGRAMMED CONFIGURATION
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 3 of 15 May 2008 G E N E R A L I N F O R M AT I O N The SMMC-3 Control Panel m anages snow and ice m elting equipm ent for sidewalks, driveways, gutters, downspout s, etc. Suitable for cont...
Page 4 - WA R N I N G S
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 4 of 15 May 2008 Installation & O perating Instructions 120 VAC, to conta ctor coils snow/i ce sensor opt i ons m axim um 2 se nsors p er zo ne * * maxi mum 1 SMPS-1 sensor per zone 1 2...
Page 5 - – temperature sensor.; POWER SUPPLY; PRE-PROGRAMMED CONNECTIONS; DO NOT
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 5 of 15 May 2008 5. The SMMC-3 term inal blocks serve 5 distinct connection sectors (see Fig 4 ), they are: 1. SMTS-1 – temperature sensor. 2. SMAS-1 aerial sensors / SMGS-1 gutter sensors ...
Page 6 - After energizing the controller, you should see:; The Sm all green LED; To cycle system and check sensor operation:; After 20 m inutes, confirm the display reads 32°F
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 6 of 15 May 2008 Fig. 4 SMMC -3 Control Panel (Typical Connections) S Y S T E M C H E C K Before you energize the controller, confirm: · All the sensors, relay coils and the power suppl y a...
Page 7 - O P E R AT I O N; MODE 1 – INDEPENDENT
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 7 of 15 May 2008 O P E R AT I O N The SMMC-3 is a program m able controller, capabl e of controlling three separate snow/ ice m elting zones. A control relay for each zone is included in th...
Page 8 - ZONE X
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 8 of 15 May 2008 ZONE ASSIGNMENT The SMMC-3 uses the concept of a zone syst em to m ost efficiently control snow/ ice m elting equipm ent. The term “zone” means an area (either surface area...
Page 9 - PROGRAMMING INSTRUCTIONS
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 9 of 15 May 2008 PROGRAMMING INSTRUCTIONS The SMMC-3 program has been structured into 6 levels; within each of these levels are further degrees of selection. Each programming step is clearl...
Page 11 - Error Messages; Manual only; DOWN
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 11 of 15 May 2008 Error Messages The SMMC-3 will display an error message whenever a problem is detected with the connection to the SMTS-1 or any of the SMPS-1 ’s. Note that the connection ...
Page 12 - T R O U B L E S H O O T I N G G U I D E; SYMPT OMS
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 12 of 15 May 2008 T R O U B L E S H O O T I N G G U I D E SYMPT OMS PROBABLE CAUSE CORRECT ION System is not operating and syst em light is not lit. No Power to SMMC-3 Turn on power using s...
Page 14 - S P E C I F I C AT I O N S; SENSOR EXTENSION WIRE SPECIFICATIONS
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com GA-2318, R1 Sheet 14 of 15 May 2008 S P E C I F I C AT I O N S Electrical Power Requirem ents 120 VAC, 50/60 hz, 480VA Control Relays – Outputs 120 VAC, Pilot Duty, 120VA Power Supply – Sensors 24 VAC, Class...
Page 15 - L I M I T E D WA R R A N T Y A N D L I A B I L I T Y; or cable at the installation site
PO. Box 726 n TULSA, O K 74101 n TEL 918-627-5530 n FAX 918-641-7336 n www.nelsonheaters.com Ó Copyright 2008 GA-2318, R1 Sheet 15 of 15 May 2008 L I M I T E D WA R R A N T Y A N D L I A B I L I T Y Nelson warrants that if there are any defects in material or workmanship in any heating cable or acce...