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DREXAN HeatTracer Скачать руководство пользователя страница 5

HD110301-1 Rev2

Page 5 of 23

FIRE SUPPRESSION SYSTEM FREEZE PROTECTION APPLICATIONS

Properly designed freeze protection systems maintain water temperature at a minimum of 40°F/4°C
to prevent fire suppression piping from freezing.

Fire Suppression System Freeze Protection Applications

A typical freeze protection system includes the heating cables, connection kits, cable monitoring
and temperature control, and power distribution.

FIG. 1 – TYPICAL FIRE / FREEZE PROTECTION SYSTEM

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Содержание HeatTracer

Страница 1: ...HD110301 1 Rev2 Page 1 of 23 Fire Sprinkler Freeze Protection Design Install Guide...

Страница 2: ...m Freeze Protection Design Guide Page 11 STEP 1 Collect the Required Information for Each Line Page 11 STEP 2 Design Considerations Page 12 STEP 3 Electrical Requirements Page 13 STEP 4 Selecting Cabl...

Страница 3: ...ot cover the following applications Hazardous locations as defined in the National Canadian Electric Code Supply voltages other than 100 130V or 208 277V For assistance with application requirements t...

Страница 4: ...cal energy is efficiently used while providing the required reliable freeze protection A correctly designed and specified system will comprise the following Heating cable correctly selected for the li...

Страница 5: ...n water temperature at a minimum of 40 F 4 C to prevent fire suppression piping from freezing Fire Suppression System Freeze Protection Applications A typical freeze protection system includes the hea...

Страница 6: ...ground general water piping given the following conditions are met Heating cable is permanently secured to insulated metal pipes using TAPE GCR HT glass tape or to plastic pipes using TAPE AL aluminum...

Страница 7: ...racer connection kits Heating cable is protected from the pipe to the power connection box in CSA certified water sealed conduit with a minimum diameter of suitable for the location The system is cont...

Страница 8: ...dpipe up to and including 20 diameter is used UL listed fiberglass or closed cell flame retardant insulation with weatherproof cladding is used The system is controlled by a Controller with integrated...

Страница 9: ...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 alar...

Страница 10: ...PE GCR HT glass tape or to plastic pipes using TAPE AL aluminum tape The system is controlled by a Controller with integrated ground fault protection with alarm contacts connected to a fire control pa...

Страница 11: ...rature at which the cable will normally become energized not necessarily the coldest temperature Metal or non metallic Pipe Some materials have superior heat transfer compared to others For example me...

Страница 12: ...more electrical power over time and is not required with a correctly designed system A lower wattage cable has a longer circuit length On projects with long runs this reduces the number of circuits th...

Страница 13: ...level as per the National and Canadian Electrical Codes This protection is provided in Drexan s recommended Controllers STEP 4 SELECTING CABLE POWER OUTPUT When determining the minimum ambient tempera...

Страница 14: ...2 5 2 0 1 6 1 4 1 3 1 1 20 29 4 9 3 0 2 3 1 9 1 7 1 6 1 3 40 40 6 4 3 9 3 0 2 5 2 2 2 0 1 8 1 0 18 3 7 2 2 1 7 1 4 1 3 1 1 1 0 10 23 4 5 2 7 2 1 1 8 1 5 1 4 1 2 20 29 5 4 3 3 2 5 2 0 1 8 1 7 1 4 40 4...

Страница 15: ...29 30 0 16 0 11 0 9 0 7 0 6 1 5 0 40 40 39 0 21 0 15 0 11 3 9 3 8 0 6 4 14 0 18 22 0 12 0 8 0 6 3 5 2 5 0 4 0 10 23 27 2 15 0 10 0 8 0 7 0 6 0 4 4 20 29 33 0 17 3 12 0 9 3 8 0 7 0 5 2 40 40 43 0 23 0...

Страница 16: ...tion and 1 foot for the end termination Table 2 HEAT LOSS ADDERS CABLE PER FOOT Pipe Hardware Types Pipe Size Inches Flange Per Pair Vent Drain Pipe Support Globe Ball Butterfly Gate Valve 0 3 1 1 1 1...

Страница 17: ...n connect up to three heaters to power or be used as an inline splice no power or inline tee no power AMIGA consists of a pipe mounted stanchion and an enclosure junction box with terminal blocks moun...

Страница 18: ...nels are desired contact Drexan HeatTracer for design and delivery Single circuit control Heating cable circuits that do not exceed the current rating of the selected Controllers can be switched direc...

Страница 19: ...sfer An additional layer of foil tape fastening the cable to the pipe also assists in the heat transfer and can prevent the cable from being embedded in the insulation Do not cut the cable until it is...

Страница 20: ...HD110301 1 Rev2 Page 20 of 23 FIG 7...

Страница 21: ...n can prevent additional labor costs Minimum readings of 20 Megohms for each circuit is an acceptable level to test for A record should be kept of the reading after the cable has been installed This r...

Страница 22: ...____ Tested By ___________________________ Date Witnessed By ________________________ Date Readings after Installation Insulation Resistance M Ohms ______________________________________ Tested By ___...

Страница 23: ...ir Zero power output Low or no input voltage Repair electrical supply Connections not properly made Repair connections Pipe is at elevated temperature Check pipe temperature and recalculate the output...

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