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Table of Contents
Summary of Contents for Reznor EFMA
- Page 1 EFMA Floor Heating System INSTALLATION GUIDE Oct. 2011 Edition www.rezspec.com...
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Page 3: Table Of Contents
4.8 Measuring Resistance and Measures’ table ....23 4.9 Using the EFMA System ......24 5. -
Page 4: Efma Floor Heating System
• Floor temperature varies based on insulation and floor characteristics; • The EFMA system can be installed under a shower floor only if the floor is ceramic or natural stone. A waterproof membrane must be used to maintain the heating cables in a dry environment. -
Page 5: Components
Components Two-phase conductor 120V: phase - neutral 240V/208V: phase - phase aramid fiber roving ground wire (bare wire) cold lead heating cable junction channel cold lead floor heating system heating cable floor covering wire insulation cement glue aramid fiber roving PVC sheath self-levelling cement... -
Page 6: Always
• Ensure that the black heating cable is completely embedded in cement or an equiv- alent binder (cement glue, ceramic glue, self-levelling cement); • Ensure that the voltage supplied equals the nominal voltage of the EFMA system; • Repair the product only using the EFMA repair kit available at your authorized REZNOR dealer;... -
Page 7: Never
1.3 Never • Install EFMA sections so that the heating cables are less than 76 mm (3”) from each other. The temperature could be too high and could cause damages; • Shorten or alter any part of the heating cable (Fig. 1.3);... -
Page 8: Technical Information
2.1 Surface Area and Power Output of EFMA Products Width Length Surface area Power Resistance Product # 120V sq. ft. Watts EFMA85AK1ELNG1 6’ 169.4 EFMA120AK1ELNG1 7’ 6” 120.0 EFMA150AK1ELNG1 10’ 96.0 EFMA170AK1ELNG1 11’ 6” 84.6 EFMA240AK1ELNG1 15’ 59.9 EFMA300AK1ELNG1 19’ 47.5 EFMA360AK1ELNG1 22’... - Page 9 Width Length Surface area Power Resistance Product # 240V/208V sq. ft. Watts EFMA170AK3ELNG1 11’ 6” 338.8 EFMA240AK3ELNG1 15’ 240.0 EFMA300AK3ELNG1 19’ 192.0 EFMA360AK3ELNG1 22’ 6” 159.8 EFMA420AK3ELNG1 26’ 6” 137.0 EFMA475AK3ELNG1 30’ 121.1 EFMA600AK3ELNG1 37’ 6” 95.0 EFMA720AK3ELNG1 45’ 79.2 EFMA840AK3ELNG1 52’...
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Page 10: Insulation Test
Fig. 2.2 CAUTION! Dangerous Test • Write the reading in the measures’ table; • This reading must be over 1,000,000 ohms; • If the reading is under 1,000,000 ohms, stop work and contact REZNOR’s technical specialists at 1 800 695-1901. -
Page 11: Resistance Test
• Write the reading in the measures’ table; • Verify the heating cable integrity by comparing your reading to the value on the cold lead label; • If your reading is off (see Table 2.1) at any step, stop work and contact REZNOR’s technical specialists at 1 800 695-1901. -
Page 12: Types Of Heating And Floor Coverings
Section 5. 3.2 Radiant Floor Heating EFMA can be used as the room’s primary heat source. It can heat the room using the EFMA system only. Proceed as follows: • Connect the system to an ambient temperature regulator;... -
Page 13: Typical Floor Coverings
IMPORTANT! Do not install a radiant floor heating system on a noninsulated or poorly insulated subfloor, or over a crawl space. The efficiency of this type of primary room heating system will depend on factors such as surface area, heat conductivity of the floor covering, insulation on outside walls, etc. -
Page 14: Installation Instructions
• Determine cold lead location; • Calculate the heating area in square feet (sq. ft.); • Select the EFMA product from Table 2.1 to cover 80% of the surface, or subtract a mimimum of 50 mm (2”) around walls and stationary elements. -
Page 15: Preparing The Subfloor
• For concrete subfloors, apply a surface sealer that is compatible with electrical heating systems in accordance with the cement glue manufacturer’s instructions. Completely coat the surface; • Let dry before installing the EFMA system (refer to the sealer’s instructions for drying time). 4.3 Marking the Floor Felt marker • On the floor of an empty room (under construction or major renovations), draw the... - Page 16 • The floor temperature sensor must be centered between two parallel heating cables under the EFMA fiberglass mat (Fig. 4.3 b). The ideal location is one where it is likely to be away from stationary objects and sheltered from outside influences (sunlight) that could skew floor temperature readings.
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Page 17: Installing The Efma Floor Heating System
• Continue to unroll the EFMA system on the floor, working around the stationary elements marked out beforehand (see Section 4.4.1); • As needed, reposition EFMA: its adhesive allows it to be positioned more than once. • You may use hot glue or tape to fasten the EFMA to the subfloor;... -
Page 18: Working Around Walls And Obstacles
Work around an obstacle Work around a 45° wall an obstacle obstacles THE HEATING CABLE Fig. 4.4 1 • When the EFMA roll meets a wall or obstacle, simply cut the mat and pivot it in another direction (Fig. 4.4.1);... -
Page 19: Mat Rippling
Never cut or try to shorten the heating cable. • Ensure that the EFMA surface is flat against the subfloor; • Avoid walking on the EFMA system. If you must, wear soft rubber soled shoes; • Always start unrolling EFMA at least 50 mm (2”) from the walls;... -
Page 20: Installing The Temperature Sensor
4.5 Installing the Temperature Sensor Hot glue gun, hammer, wood chisel or concrete chisel channel temperature sensor Fig. 4.5 • To minimize floor height, chisel a 10 mm X 10 mm X 250 mm ( ” X ” X 10”) channel in the subfloor to receive the temperature sensor. CAUTION! The sensor must be embedded in cement or an equivalent binder (cement glue, ceramic glue, self-levelling cement). -
Page 21: Applying Self-Levelling Cement
• Level the subfloor with self-levelling cement or cover the cable with a layer of cement glue when installing the stones or ceramics. IMPORTANT! Do not turn on the EFMA floor heating system before the cement has completely dried. Follow the manufacturer recommandations (may take up to 30 days, depending on the product). -
Page 22: Connecting The System
Upon installing the thermostat of the measures’ table. 4.8 Measuring Resistance and Measures’ table • The master electrician who installed and connected the EFMA system must complete the measures’ table (this label is available at the opening of the product) and give it to the customer. This sheet must be kept near the electrical service. -
Page 23: Using The Efma System
4.9 Using the EFMA System • The EFMA floor heating system is now ready for use. However, before turning on the system, make sure the curing period specified by the cement or binder manufac- turer has expired. Adjust the thermostat’s temperature based on your needs and desired level of comfort. -
Page 24: Temperature Regulation
Can I cut the EFMA heating cable to shorten it? A.1: NEVER. If the EFMA roll is too long, detach the excess cable from the mat and spread it on the floor in regular loops identical to those on the mat. Keep the minimum distance from the walls and between parallel runs of cable (radius bending of at least 20 mm [¾”] for loops). - Page 25 Q.13: Can EFMA be installed over concrete? A.13: Yes. Apply a concrete sealer before installing the EFMA system. See Section 4. Q.14: Can carpet be installed over EFMA? A.14: Yes, if the system is completely embedded in self-levelling cement. You can install low-pile carpet over the slab if the carpet’s thermal resistance does not...
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Page 26: Expert Tips: Installation And Floor Covering
(Fig. 7.1); • Though unlikely, the floor temperature sensor may need to be replaced. REZNOR recommends installing a flexible plastic tube from the sensor to the thermostat on the wall;... -
Page 27: Warranty
Subject to the legal warranties relating to quality and durability of goods provided for by the Consumer Protection Act: REZNOR warrants the EFMA heating cables of its floor heating system for a 25-year period beginning from the date of purchase, against any malfunction or manufac- turing defect.
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