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INFLOOR 386 Series, Installation Manual, Page: 1 / 36

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INFLOOR 386 Series Installation Manual Download Page 1

Series 386 

& 387

Installation Manual

Electric Cable

Please be aware local codes may require this product and/or the thermostatic control 

to be installed or connected by an electrician.

If you have any questions, please call 1-800-608-0562

www.infloor.com

Summary of Contents for 386 Series

Page 1: ...on Manual Electric Cable Please be aware local codes may require this product and or the thermostatic control to be installed or connected by an electrician If you have any questions please call 1 800...

Page 2: ...ual 3 or 3 5 spacing may be used under floor covering types with a maximum R value of R 2 5 Maximum circuit load 15 amps Maximum circuit overload protection 20 amp breaker GFCI Ground Fault Circuit In...

Page 3: ...er to Phase 9 for important design considerations These are the three most common installations 1 Wood framing With the cable installed on a well insulated wood subfloor and thin set mortar and tile o...

Page 4: ...ir parts and methods NEVER remove the nameplate label from the power leads Make sure it is viewable for inspection later NEVER allow a power lead or sensor wire to cross over or under a heating cable...

Page 5: ...erials Infloor Electric Cable system Wire Strap or HeatMatrix crack isolation membrane purchased separately or as part of a kit from Infloor Infloor Thermostat with floor sensor Infloor thermostats ar...

Page 6: ...that may require different wire spacing The area coverages shown are approximate and may vary due to installation pattern variations Also the heating cable is designed to operate 3 W linear foot Value...

Page 7: ...be done with power turned off to the circuit being worked on STEP 1 3 Use a digital multi meter set to the 200 or 2000 2k range to measure the resistance between the conductors of the cable power lead...

Page 8: ...sor wire AFTER CABLE AND SENSOR ARE FASTENED TO FLOOR OHMS Cable black to white black to blue for 240VAC Cable black to ground Cable white to ground blue to ground for 240VAC Sensor wire AFTER FLOOR C...

Page 9: ...an extra deep electrical box for the Infloor Thermostat Follow the instructions included with the thermostat for complete information on location and wiring Infloor Relay Install an extra deep electri...

Page 10: ...up to the electrical box For multiple power leads multiple cables install 3 4 conduit Infloor Thermostat Sensor The Infloor thermostat sensor should be installed in a plastic sensor tube P N 29011 or...

Page 11: ...ile working Trim out any rough drain openings or other obstructions if necessary Repeat the application process for each row until the space to be tiled is completely covered STEP 3 5 Outline the heat...

Page 12: ...needed Draw an outline around the Factory Splice and move it aside Cut a shallow channel in the HeatMatrix to allow the Factory Splice to lay flat with the rest of the heating cable in the channel Pu...

Page 13: ...covering a bench seat or step area not in a shower area place a single run of cable up the riser Use a section of HeatMatrix to secure the cable to the seat at the desired spacing then install a singl...

Page 14: ...this close to a wall anyway It may also be drawn closer but be careful that the cable will not be placed under any trimwork Remember the heating cable length CANNOT be cut to fit It must be kept its...

Page 15: ...r is well cleaned and the strap is wiped free of any oils However it is highly recommended to also place screws at each end of the strap and every 4 to 5 feet to ensure it does not come loose If using...

Page 16: ...eeded STEP 4 9 Draw an outline around the Factory Splice and move it aside Chisel a shallow channel to allow the Factory Splice to lay flat with the rest of the heating cable in the channel Add hot gl...

Page 17: ...ll sections of strap to fit the ends of that area Keep wire 3 away from the framing STEP 4 12 To secure long lengths of heating cable place additional short lengths of the strap at 3 4 ft intervals Sp...

Page 18: ...fing membrane It is recommended that a dedicated cable be installed in the shower area separate from the rest of the bath floor In case there is ever a problem with the shower installation this cable...

Page 19: ...part of the heating cable entering a shower area is damaged during installation do not attempt to repair it A field repair or modification of the cable may result in serious shock hazard Phase 6 Fina...

Page 20: ...ate over the power lead s and sensor tube to protect them against baseboard nails later STEP 7 5 If it was necessary to end a power lead at a junction box feed 14 or 12 gauge electrical wire from this...

Page 21: ...VAC is supplied to 240 VAC cables Otherwise dangerous overheating and possible fire hazard can result STEP 8 4 System Start Up After all controls are installed do not energize the system except to br...

Page 22: ...5 spacing the combined R value should not exceed R 1 5 Higher R values will diminish performance and trap too much heat Consult the floor covering manufacturer to verify compatibility with radiant el...

Page 23: ...installation is typically recommended for wood or laminate flooring due to expansion and contraction caused by changes in floor temperature When selecting floor coverings the R value should not exceed...

Page 24: ...od vinyl laminate or carpet floor coverings Attach the Infloor Electric Cable to Wire Strap on the subfloor or slab then pour self leveling mortar 1 4 to 1 2 thick according to manufacturer s specific...

Page 25: ...tar bed Plywood subfloor Tile stone or laminate flooring Joist Insulation beneath slab per International Residential Code Chapter 11 Heating cable Concrete slab with rewire or rebar Thin set or self l...

Page 26: ...sonal injury and or death do not perform any electrical work unless qualified to do so Work should be done with great care and with power turned off to the circuit being worked on Follow all local bui...

Page 27: ...2 Zone 1 Control Zone 2 Control Zone 2 Sensor Zone 1 Sensor 1 spool 70 ft2 3 spacing 1 spool 240 ft2 3 5 spacing Cable end Cable end 1 spool 120 ft2 3 spacing Wire Strap Kitchen and Family Room norma...

Page 28: ...etry Pantry Microwave Floor Sensor Cable end Cable end 1 spool 120 ft2 3 spacing 1 spool 118 ft2 2 5 spacing Wire Strap Kitchen and SunRoom normal and high heat loss framed floor construction One zone...

Page 29: ...way from toilet flange Wire Strap Control Floor Sensor 1 spool 100 ft2 3 spacing counter open to floor Master Bathroom normal heat loss framed floor construction One zone 120 volts One cable 49 ft of...

Page 30: ...hroom high heat loss below grade basement slab One zone 120 volts One cable 39 ft of Wire Strap or two 25 ft rolls Vanity Vanity Bath Tub Cable end Wire Strap Floor Sensor Control 1 spool 59 ft2 2 5 s...

Page 31: ...End Shower Curb Zone 1a Zone 1b Example of Cables only with W on the nameplate label where cable is installed in a shower area and enters over the curb Install cables at least 6 away from toilet rings...

Page 32: ...alled above the waterproofing liner if the attachment method does not puncture the liner A overlay of thinset is first applied over the liner Wire Strap or 2 inch HeatMatrix strips are then attached t...

Page 33: ...nameplate label set the meter to the 2000 ohm 2k scale Floor does not get warm Cable has been damaged Measure cable resistance Check for both open circuit and short circuit as detailed earlier in thi...

Page 34: ...ion Floor sensor is not wired properly or is not working properly Make sure only one floor sensor is connected to the control Loose connection s on line side and or load side of control Remove and rei...

Page 35: ...35 of 36 Notes...

Page 36: ...IOM INF Cable 1816 EDP 81017518 Copyright 2018 INFLOOR HEATING SYSTEMS USA Canada Toll free 800 608 0562 Fax 719 395 3555 117 E Arkansas Buena Vista CO 81211 infloor com...

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