MTC-4C user manual
Contents
1. Phason MTC 4C user manual The Modulating Temperature Control MTC 4C allows you to automatically control ventilation fans according to the ambient temperature When the temperature is at the temperature set point the MTC 4C operates the fans at the idle speed setting When the temperature exceeds the set point the MTC 4C increases the speed When the temperature increases 6 F above the set point the MTC 4C increases the speed to maximum When the temperature drops below the set point the MTC 4C shuts off the fans in shut off mode or operates the fans at the idle speed idle mode The MTC 4C is ideal for poultry livestock greenhouse or light industrial buildings Electrical ratings Features CAE E SEE SE SEE SEE SEE JEE SEE SER 3 Input 120 230 VAC 60 Hz Variable stage 10 A at 120 230 VAC general purpose resistive 7 FLA at 120 230 VAC PSC motor 1 2 HP at 120 VAC 1 HP at 230 VAC PSC motor Fuse 15 A 250 VAC ABC type ceramic One variable speed output Adjustable 40 90 F temperature set point Fixed 6 F temperature differential Automatic shut off and idle modes Fixed 2 F off set back for shut off mode Adjustable idle speed for idle mode One foot temperature probe extendable to 500 feet Overload protection fuse Rugged enclosure corrosion resistant water resistant and fire retardant CSA approval Two year limited warranty 14740006 MTC 4C user manual Installing the MTC 4C Phaso2. ceramic Important A suitable switch must be installed between the control and the motor Important Il est essentiel ou un interrupteur convenable soit install entre le contrdle et le moteur Caution For controlling shaded pole permanent split capacitor or universal motors only Caution Destin uniouement bague de d phasage ou condensateur permanent e Connect all ground wires to the grounding terminal located near the cable entry points Use liquid tight connectors at the cable entry points and seal with an RTV silicone HM Automatic shut off mode CEE idle mode ane When crossing other cables or power lines cross them at a 90 degree angle 14740006 Installing the MTC 4C Phason Extending probe cables You can extend temperature probe cables to lengths of up to 500 feet Follow the guidelines below and below when extending cables Use two wire 18 AWG jacketed cable Phason recommends Belden 9408 Alpha 5052 or an equivalent Extension cable is also available from Phason For more information contact your dealer or Phason Ifthe unit operates erratically with the extended probe run the cable along a different path or shorten it Join the extension cable to the temperature probe cable as shown on the next page gt Slide three pieces of heat shrink tubing over the wires one for the red wire one for the bla
3. ck wire and one for both Strip the ends of the wires and then twist them together Solder the wires together using rosin core flux solder DO NOT use acid core solder Slide the heat shrink tubing over the solder joints Shrink the tubing using a heat gun mgogo OW Your connection should look like this 4 2009 09 10 Phason Operation Operation The MTC 4C has two modes of operation automatic shut off mode and idle mode Automatic shut off mode In automatic shut off mode when the temperature drops below the set point the MTC 4C shuts off the fans Idle mode In idle mode when the temperature drops below the set point the MTC 4C operates the fans at the idle speed Using automatic shut off mode Position the jumper as shown in section G on page 3 Turn the Temperature knob to the point where the fan turns on Turn the Idle Speed knob to the minimum idle speed desired Fee RQ eee Turn the Temperature knob to the desired temperature Using idle mode Position the jumper as shown in section G on page 3 Turn the Temperature knob fully clockwise Turn the Idle Speed knob to the minimum fan speed desired E Ds a Turn the Temperature knob to the desired temperature Maintaining the MTC 4C Proper care and maintenance will help your MTC 4C last longer To prevent damage to the control perform the following steps after the first two weeks of operation and once a year after that 1 Switch off the power t
4. l Replace the fuse If the fuse blows immediately a problem exists with the wiring or the fan motor If the fuse blows after a delay minutes days or weeks the load is exceeding the current rating of the control The fan motor growls To ensure the motor is working disconnect the line at terminal 1 and terminal 4 and then connect these lines together The fan should run at full speed Use a short probe stock probe length on the MTC 4C to ensure excessive electrical noise is not being induced onto the probe The Temperature knob will not control the fan speed Check the probe wiring see page 3 Replace the temperature probe part number MT P3 if the motor runs at idle or full speed regardless of the temperature setting Contact your dealer if this guide fails to resolve your problem 14740006 7 Troubleshooting Phason Limited warranty This warranty applies only to the Phason Inc Phason Modulating Temperature Control MTC 4C If you need warranty service return the product and original proof of purchase to your dealer Phason warrants the MTC 4C subject to the following terms and conditions This warranty is valid only to the original purchaser of the product for two years from the manufacturing date The manufacturing date is stated in the first eight digits of the serial number in the form year month day Phason hereby warrants that should this product fail because of improper workmanship Phas
5. n Installing the MTC 4C The MTC 4C must be installed by a qualified electrician Before installing or servicing the MTC 4C switch OFF the power supply at the source Install the MTC 4C and all equipment connected to it according to local electrical codes Mount the unit on a sheltered vertical surface with the electrical knockouts facing down Use a screwdriver to tighten the screws in the enclosure Do not use a drill or over tighten the screws this can crack the enclosure and ruin the watertight seal Use the electrical knockouts for bringing wires or cables into or out of the enclosure Use watertight strain reliefs or conduit connectors at all cable entry points Before removing electrical knockouts remove the cover to prevent damaging the control Do not make additional holes in the enclosure this can damage the watertight seal or components and void the warranty Only permanent split capacitor motors appropriate for variable speed control or shaded pole motors can be used on the variable stage Fill out the information below to help configure your control and verify that you do not exceed the electrical ratings of the MTC 4C AxB e Maximum current draw per fan Number of fans Total current draw Voltage rating Power factor Mounting the MTC 4C When selecting a mounting location follow the guidelines below Select a location that is away from sources of heat Mount the control o
6. n a solid vertical surface with the electrical knockouts facing down will void the warranty N Failure to follow the mounting guidelines can allow moisture into the control and 2 2009 09 10 Phason Installing the MTC 4C Wiring the MTC 4C 1 Before wiring the control set the voltage switch to the correct line voltage used 120 or 230 VAC 2 Before removing electrical knockouts remove the cover to prevent damaging the control Use watertight strain reliefs or conduit connectors at all cable entry points 4 Connect the wites as shown below Wiring for 120 VAC 1 Connect LINE to terminal 1 2 Connect NEUTRAL to terminal 2 3 Connect the fan to terminals 3 and 4 Wiring for 230 VAC 1 Connect L1 to terminal 1 2 Connect L2 to terminal 2 3 Connect the fan to terminals 3 and 4 Connecting the temperature probe Follow the guidelines below and connect the temperature probe as shown in the diagram Do not run the probe cable in the same conduit as AC power cables Do not run the sensor cable beside AC power cables or near electrical equipment Faw Service Panel iin Insulate using a 31 wire nut or similar connector Line L1 Neutral L2 Enclosure Q z For 115 VAC Before connecting the power set the switch to the correct setting ie Fuse 15 A 250 VAC
7. o the control 2 Remove the cover and check inside for moisture If there is any moisture wipe it away using a dry cloth 14740006 5 Maintaining the MTC 4C Phason 3 Check all cable entry points to make sure they are properly sealed If they are not properly sealed apply silicone sealant around the entry points If you need to seal the enclosure use a sealant that is labelled as non corrosive electronics grade or neutral cure such as GE Silicone RTV6780B RTV 142 or RTV 162 Do not use a sealant that is labelled as acetic acid cure or acetoxy cure These sealants release acetic acid while curing which can damage the control and will void the warranty 4 Check all wites to make sure they are properly connected and that they are in good condition 5 Fasten the cover to the enclosure and then switch on the power to the control Cleaning the MTC 4C To clean the MTC 4C wipe the surface with a damp cloth Be careful when washing the room using a high pressure washer DO NOT spray the control using a high pressure washer this can damage the control and will void the warranty Evidence of moisture damage inside the control will void the warranty 6 2009 09 10 Phason Troubleshooting Troubleshooting The fan motor will not run Reset the thermal cutout on the fan motor and allow the motor to cool Check the wiring Use a test light or voltmeter to test the power at the contro
8. oducts can experience occasional failures and the user should recognize this possibility If Phason products are used in a life support ventilation system where failure could result in loss or injury the user should provide adequate back up ventilation supplementary natural ventilation or an independent failure alarm system The user s lack of such precautions acknowledges their willingness to accept the risk of such loss or injury Phason Inc 2 Terracon Place Winnipeg Manitoba Canada Phone 204 233 1400 E mail support phason ca R2J 4G7 Fax 204 233 3252 Web site www phason ca 8 2009 09 10
9. on will repair the unit effecting all necessary parts replacements without charge for either parts or labor Conditions Installation must be done according to Phason s enclosed installation instructions The product must not have been previously altered modified or repaired by anyone other than Phason The product must not have been involved in an accident misused abused or operated or installed contrary to the instructions in our user and or installation manuals Phason s opinion about these items is final The person requesting warranty service must be the original purchaser of the unit and provide proof of purchase upon request All transportation charges for products submitted for warranty must be paid by the purchaser Except to the extent prohibited by applicable law no other warranties whether expressed or implied including warranties of merchantability and fitness for a particular purpose shall apply to this product Any implied warranties are excluded Phason is not liable for consequential damages caused by this product Phason does not assume or authorize any representatives or other people to assume any obligations or liabilities other than those specifically stated in this warranty Phason reserves the right to improve or alter the MTC 4C without notice Phason controls are designed and manufactured to provide reliable performance but they are not guaranteed to be 100 percent free of defects Even reliable pr
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