Warmlyyours SCP-120 User Manual

Automatic Snow/Ice Melting System Control PanelInstallation and Operation Manual24/7 Installation Support • Lifetime Technical Assistance • Free D

InstallationConfi guring the High Limit Sensor Dip Switch pin 3 is used to set the high limit sensor op-eration to one of two possible operati

Figure 10: 120 VAC SCP-120 Operating two electrically held contactorsSupply

Figure 16: SCP-120 & RCO remote connection22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

Figure 19: SCP-120 Sensor Connections22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1RedBlackWhiteRedBlac

Figure 20: SCP-120 EMC connections

Figure 21: SCP-120 Electrician’s DVM

Figure 22: SCP-120 (Slab or Ambient High Limit Sensor) 95-107 ohms (on 200k scale of ohms meter) Thermistor connections

Contactor ConnectionsContactor Connection Number1 Sensor Connection (White Wire)2 Senso

24/7 Installation Support • Lifetime Technical Assistance • Free Design Service • www.WarmlyYours.com • (800) 875-5285

24/7 Installation Support • Lifetime Technical Assistance • Free Design Service • www.WarmlyYours.com • (800) 875-5285 APS-3C Automatic Contro

Safety Make all electrical connections in compliance with the National Electric Code (NFPA 70) and local electrical code. If you have questions conce

High Limit Sensor The calibrated 40°F to 90°F (4°C to 32°C) high limit sensor prevents excessive temperatures when using constant wattage an

Initial Settings When fi rst placing the system in service, the hold-on time should be set to an initial value. Three to fi ve hours is sugg

Figure 2: SCP-120 front panel detailRCO Remote Control Unit The RCO Remote Control Unit is used with the SCP-120. It adds remote control and

Operating the HEATER CYCLE switch operates heaters for the CYCLE TIME which is nor-mally set to 2 hours. Operating the HEATER CYCLE switch

Control Supply Load Contact type Maximum Ratings Heater hold-on timer System testSnow/Ice Sensors Sensor type Circuit type Lead len

OPERATIONSCP-120 The snow melting system can be monitored and controlled either locally from the SCP-120 itself or from two remote locations in

Switches: • HEATER CYCLE switch momentarily depressed will start a manual heater cycle for the set CYCLE TIME. Momentarily depressed while hea