HD110301-1 Rev2
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Branch Lines with Sprinklers
MultiTrace is designed to maintain branch lines containing sprinklers at 40°F/4°C in areas subject to
freezing.
FIG. 5 – TYPICAL FIRE SUPPRESSION SYSTEM FOR BRANCH LINES WITH SPRINKLERS
Application Requirements
The system complies with Drexan HeatTracer design and installation requirements for freeze
protection of fire suppression branch lines with sprinklers given the following conditions are met:
The heating cable is permanently secured to insulated metal pipes using TAPE-GCR-HT glass
tape or to plastic pipes using TAPE-AL aluminum tape
Temperature controller alarm contacts must be connected to the fire control panel
The system is controlled by a Controller with integrated ground fault protection with alarm
contacts connected to a fire control panel
The sprinkler design must account for the sprinkler shadow created by the outer diameter
of the thermal pipe insulation
Closed cell waterproof thermal insulation with flame-retardant waterproof covering is used
Heating cable is installed per manufacturer’s instructions with approved connection kits
Additional heating cable is run to compensate for sprinkler heads, sprigs, valves and pipe
supports as detailed in these design guidelines and installation instructions
Approvals
CSA /UL (CUS) certified for non-hazardous locations.
