5
CONTROLLING YOUR ROOF & GUTTER CABLE INSTALLATION
The Warmup Roof & Gutter De-Icing Cable works most effectively with an automatic thermostat and sensing
device. The sensor monitors for moisture and temperature to maintain the required temperature.
For outdoor mounted controls, use the DS-series of automatic controllers, the Commbox and the TRF-115.
For indoor-mounted devices, select the ETO2, USETOG module with USETOR roof sensor(s) and USETOK mounting
tube for ground sensor USETOG.
When using the NAMSR-Kits from Warmup, no control device is necessary. Simply plug into an outdoor rated
outlet supplied by a GFCI breaker of the appropriate voltage.
ELECTRICAL PROVISIONS FOR THE SYSTEM
The electrical connections to the De-Icing Cables shall be in accordance with the National Electrical Code (in the
USA) or Canadian Electrical Code (in Canada).
INSTALLING YOUR ROOF & GUTTER HEATING CABLE
Choose a starting point
- Select the starting point of your system by locating the desired placement of the
outdoor electrical outlet or the junction box routing to the controller. Make sure to use caution and avoid high
traffic areas, restrict general access to the cable and stay away from windows, doors and other obtrusions.
Plan the pattern on your roof
- There are multiple methods for applying the cable to the roof and gutters
as further described in this manual. We recommend you plan a written route for the cable to ensure the most
efficient path and installation method for the heating cable.
Note that the heating cable is specifically intended for problem areas and does not need to be installed on all
areas of the roof. In some instances, on high-pitched roofs (over 40 degree slope) and on roofs with minimal
overhang, no cable on the actual roof line may be required. However, always ensure to create a path for the
ice to melt from the roof to the ground, placing cable on the roof, in the gutters and in the downspouts as
necessary. Extend the cable about 1’ out of the bottom of the downspout (surface) or about 1’ below the frost
line. As a reference, the frost line in cold areas is typically 20” to 30” deep.
SERVICE
1. Prior to the winter season, make sure gutters and downspouts are free of leaves and other debris.
2. Warmup recommends checking the insulation resistance of the heating cable sheath with a 2500 VDC
meggar. This reading is taken at the power connection end of the cable between a buss wire and the grounding
braid. The minimum acceptable reading is 20 megohms. The value should be recorded.
3. The installation should be checked every Fall. The following checks should be done.
A. Meggar test (see #2 above for procedure).
B. Inspect heating cable and connections for signs of damage.
C. If physical damage is found, replace the damaged sections.
D. If the installation fails the meggar test and physical damage cannot be found, then the complete circuit
should be removed and replaced with new roof and gutter heating cable.
4. Prior to repairs performed on roof, heating cable must be removed to prevent damage to cable. Cable must
not be exposed to chemical sealants that may be applied to roof surface and must be stored away from area
while sealants cure. Upon replacement of cable, inspect for signs of physical damage to cable and connections.
Replace any damaged sections and connections.
