Annoyingly recurring repair costs?

• Rain gutters, down pipes and roof drains get covered by ice, overflow or burst.
• Frost damage in plaster and brickwork, in ceilings, foundations or façades.
• Melt water cannot drain off.
• Danger of accidents by icicles dropping from roofs.

Gutter heating cables can help you prevent this!

 

Gutter heating cables with

• 2m connecting cable
• Waterproof bushings.

 

GlasBest/PVC/E

(Specifications see table 1). Dimensionally stable design, single or dual installation, connection on one side.

 

SiPCPS/E - Connection on one side, single installation. Specifically suited for narrow gutters and down pipes, manholes, etc.

Power:    max. 30W/m

Voltage:  230V or other

Heating cable length: short length as required

 

GlasBest/PVC/E (specifications see table 1). Dimensionally stable design, dual installation, connection on both sides.

 

SD-36 - Self-delimiting band heater. Connection on one side. Single installation.

Power:    18W/m at 0°C

                36W/m in ice water

Voltage: 230V

Heating cable length: as required

Disadvantage: Relatively high purchase cost

 

Important: Regulating equipment should be fitted even for self-delimiting (also called self-regulating) band heaters because although the power consumption decreases with increasing temperature, there is still a current flow.

 

Accessories and determination of requirements:

Mounting accessories in downspout

 

Spacer for round gutter

 

Mounting bracket (50cm, can be split)

 

Example for determining the required parts:

For a 10m gutter and 2 down pipes with 3m length each, it is necessary to heat a length of 16m. In this case the following parts are required:

1 gutter heating cable Glasbest/PVC, length 32m
2 support tubes
6m suspension cable
6 support clamps
1 to 2 assembly ribs, where required

 

Adjustment and control:

Anti-freeze protector: dual thermostat

 

Electronic controller: ice detector with humidity and temperature sensor

 

 

Planning and assembly:

The required heating power of approx. 30 to 60 watts per meter gutter and down-pipe can be achieved by routing the Glasbest/PVC heating cable (15 to 30 W/m) in a dual loop-type manner.

Down pipes should be heated as far as 1m below the ground surface (frost limit). For plastic-gutters heating cables of up to 25W/m max. will be used.

Key to figure above:

Tragrohr                                                 Stay pipe
ca. 1 m                                                    approx. 1m
Anschlusskabel                                    Connecting cable
Rinnenbügel oder Montagesteg        Gutter strap or mounting bracket
Heizleitung                                             Heating cable
Tragseil                                                  Carrier cable
Tragschelle                                           Support clamp
1 m im Boden                                       1m into the ground

Smaller systems are often controlled manually (switched on/off, possibly with control lamp) or via the anti-freeze protector. For larger systems we always recommend installation of an ice detector with humidity and temperature sensor. The heating will only be switched on if required, i.e. when ice or snow has accumulated in the gutters or during the transition from melting to freezing temperatures. This means that energy cost reductions of up to 80% can be achieved.

Gutter heatings should be activated only in winter, while the system should be switched off in summer.

 

In case of wide rectangular gutters or large roof areas a heating power of approx. 200 to 300W/m² should be assumed, depending on the local conditions. To achieve this performances, the heating cables will by laid in a loop-type configuration with a clearance of approx. 10cm using assembly brackets.

A proven installation method for pitched roofs is to attach the heating cable using carrier cables and support clamps.

Key to figure above:

Tragseil           Carrier cable
Tragschelle     Support clamp

Heizleitung      Heating cable

 

Important! Heating cables must be laid in such a way that they do not intersect. They must be accommodated completely within the gutter, including the sleeves. The electric connection may be established only by a qualified electrical engineer in accordance with the VDE regulations.

Table 1

Heating cable length	Voltage volts	Power watt total	Power W/m
3.4m	230	105	30
4.2m	230	85	20
6.5m	230	165	25
7.8m	230	145	18
11.5m	230	305	25
14m	230	250	18
15m	230	440	20
17.5m	230	380	22

Table 2

Heating cable length	Voltage volts	Power watt total	Power W/m
11.5m	230	305	25
14m	230	250	18
15m	230	440	20
17.5m	230	380	22
20m	230	650	30
20m	230	500	25
22m	230	450	20
24m	230	415	17
26m	230	380	15
29m	230	950	30
29m	230	730	25
32m	230	870	27
36m	230	775	22
40m	230	695	18
41.5m	230	670	15
43m	230	1230	30
46m	230	1150	25
50m	230	1060	22
52m	230	1565	30
54.5m	230	1495	27
61m	230	1335	22
67m	230	1130	17
70m	230	1540	22
73.5m	230	1470	20
82m	230	1320	15
86m	400	1860	22
94m	400	2430	25
105m	400	2175	20
116m	400	1970	17
127m	400	2580	20
142m	400	2300	15