WarmlyYours | SCP-120 | Specification | WarmlyYours SCP-120 Specification

Premium Snow Melt Control
MODEL SCP-120
FEATURES & BENEFITS
• Automatic snow/ice melting control
• Operates electrically- and mechanically - held contactors
for pilot duty applications
• Energy Management Computer (EMC) interface
• Accommodates MI, constant wattage and self-limiting
heaters
• 120 VAC operation voltage
• Multiple sensor capability
• Heater hold-on and test capabilities
• CSA Certified for use in Canada and U.S.
• Simple to install and operate
• Low system costs
• Minimum energy costs
12.75"
(324mm)
CL
*1.3125"
(33mm)
*Conduit Entry 3 x 1-1/16" (27mm)
2.3125"
(59mm)
(23
5.5"
2mm)
7.5"
(191mm)
*2.125"
(54mm)
**High Limit Sensor Probe
(one sensor included per control)
11.500"
(292mm)
*2.125"
(54mm)
9.125"
(232mm)
6.562"
(167mm)
CL
*Entry Point
DESCRIPTION
The SCP-120 Snow Melt Control, when used with compatible
sensors, automatically controls snow/ice melting heaters,
ensuring minimum operating costs. Typical applications
include driveways, sidewalks, loading docks and stairs.
The SPC-120 provides a relay closure interface for use with
Energy Management Computers (EMC). This feature can also
be used for general purpose remote control, annunciation and
other advanced applications.
The adjustable hold-on timer continues heater operation for up
to 10 hours after snowfall stops to ensure complete melting.
The optional Remote Control Override RCO, can be located
where system operation can be conveniently observed. It
duplicates many of the controls and indicators on the SPC120 front panel. It is used to clear tracked and drifting snow
that may not land on a sensor.
All sensor and communications wiring is NEC Class 2. This
simplifies installation while enhancing fire and shock safety.
The SPC-120 can interface with up to six sensors from
the AIR-SS product family. Using more sensors provides
superior performance by better matching the controller to site
performance requirements.
**The calibrated 40°F to 90°F (4°C to 32°C) high limit Thermistor
probe sensor (included) prevents excessive temperatures
when using constant wattage and MI heaters. for testing the
sensor, acceptable range is +/- 100,000 Ohms depending
on temperature. It also permits safe testing at outdoor
temperatures too high for continuous heater operation.
The SPC-120 is an exceptionally capable deicing controller.
For complete information describing its application, installation
and features, please contact Customer Service or check on
the web www.WarmlyYours.com. UL Listed for use in Canada
and U.S. Markets.
24/7 Installation Support • Lifetime Technical Assistance • Free Design Service • www.WarmlyYours.com • (800) 875-5285
SPECIFICATIONS
General
Area of use . . . . . . . . . . . . . .Nonhazardous locations
Approvals . . . . . . . . . . . . . . . .Type 873 Temperature Regulating Equipment
Enclosure
Protection . . . . . . . . . . . . . . . .NEMA 3R
Cover attachment . . . . . . . . .Hinged polycarbonate cover, lockable
Entries . . . . . . . . . . . . . . . . . .3 × 1-1/16”
Material . . . . . . . . . . . . . . . . .Polycarbonate
Mounting . . . . . . . . . . . . . . . .Wall mounted
Control
Supply . . . . . . . . . . . . . . . . . .120 VAC, 50/60HZ, 35VA
Load . . . . . . . . . . . . . . . . . . . .Load switching provided by Relay Panel (sold separately)
Contact type . . . . . . . . . . . . . .Form C
Maximum Ratings . . . . . . . . .Voltage: 240 VAC Current: 24 amps
Heater hold-on timer . . . . . . .0 to 10 hours; actuated by snow stopping or toggle switch
System test . . . . . . . . . . . . . . Switch toggles the heater contact on and off. If temperature exceeds high limit, heater cycles to
prevent damage.
Snow/Ice Sensors
Sensor type . . . . . . . . . . . . . .Up to 6 sensors from the AIR-SS product family
Circuit type . . . . . . . . . . . . . . .NEC Class 2
Lead length . . . . . . . . . . . . . . Up to 500’ (152m) using 18 AWG 3-wire jacketed cable Up to 2,000’ (609m) using 12 AWG 3-wire
jacketed cable
High Limit Thermostat
Adjustment range . . . . . . . . . .40°F to 90°F (4°C to 32°C)
Dead band . . . . . . . . . . . . . . .1°F (0.6°C)
Sensor type . . . . . . . . . . . . . .Thermistor network
Circuit type . . . . . . . . . . . . . . .NEC Class 2
Lead length . . . . . . . . . . . . . . Up to 500’ (152m) using 18 AWG 2-wire jacketed cable
Up to 1,000’ (304m) using 12 AWG 2-wire jacketed cable
Energy Management Computer (EMC) Interface
Inputs . . . . . . . . . . . . . . . . . . . OVERRIDE ON (10 ma dry switch contact)
OVERRIDE OFF (10 ma dry switch contact)
Outputs . . . . . . . . . . . . . . . . . . SUPPLY (10 ma dry switch contact)
SNOW (10 ma dry switch contact)
HEAT (10 ma dry switch contact)
HIGH TEMP (10 ma dry switch contact)
ALARM (10 ma dry switch contact)
Environmental
Operating temperature . . . . . . –40°F to 160°F (–40°C to 71°C)
Storage temperature . . . . . . . .–50°F to 180°F (–45°C to 82°C)
ORDERING INFORMATION
ORDER NUMBER
DESCRIPTION
ACCESSORIES
SCP-120
PREMIUM SNOW MELT CONTROL
RCO REMOTE CONTROL OVERRIDE (OPTIONAL)
AIR-SS AERIAL-MOUNTED SNOW SENSORS
(SOLD SEPARATELY)
LIMITED WARRANTY
WarmlyYours 2-year limited warranty covering defects in workmanship and materials applies. Contact your Account
Manager for complete warranty information.
This document is the property of WarmlyYours. Subject to change without notice.
10204 6/09
24/7 Installation Support • Lifetime Technical Assistance • Free Design Service • www.WarmlyYours.com • (800) 875-5285
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