©2015 EasyHeat
www.easyheat.com
14104-001 Rev. 4
GENERAL INFORMATION
The GC-1 heating cable controller has been designed
and manufactured for the sole intended use of control-
ling heating cables in residential and commercial roof
and gutter de-icing applications. The GC-1 uses micro-
controller technology to reduce energy consumption by
energizing the heating cable only when the appropriate
temperature and moisture conditions occur.
The GC-1 controller includes the MSG-1 sensor, used to
detect moisture on roofs and in gutters. Roof moisture
detection is made with the unique sensor wire design;
the sensing grid on the bottom of the MSG 1 detects
gutter moisture. The MSG-1 housing sits directly in the
gutter and the sensor wire is secured to the roof. The
combination roof and gutter detection system provides
quick detection of potentially damaging roof and gutter
icing conditions. When moisture is detected, the GC-1
activates the de-icing cables.
Figure 1
The MSG-1 sensor operates on low voltage provided by
the GC-1 control unit and includes mounting hardware
and 30’ of wire for connection back to the GC-1. The
GC-1 automatically detects and sets-up for supply volt-
ages between 120VAC and 277VAC; no dipswitches or
jumpers are required. The GC-1 has a LED indicator to
display when cables are energized.
WARNING! Improper installation, use and/or mainte-
nance of the GC-1 can cause fire, electrical shock and/
or result in roof and gutter ice build-up
The GC-1 controller is shown in Fig.1, with the MSG-1
and accessories (6 coated clips, mounting screw and
coated strapping) shown in Fig. 2.
6.0”
6.4”
11399-001 REV 0
w w w . e a s y h e a t . c o m
GC-1 CONTROLLER
Figure 2
MSG-1 AND ACCESSORIES
GC-1 CONTROLLER
6.4"
6.0"
Roof and Gutter De-Icing Control
Installation and Operating Instructions
GC-1
FOR EXTERIOR INSTALLATION ONLY
