Pentair Raychem HWAT System Installation And Operation Manual
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Pentair Raychem HWAT System Installation And Operation Manual

Pentair Raychem HWAT System Installation And Operation Manual

Hot water temperature maintenance systems for thermally insulated pipes, electronic controller
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HWAT System
INSTALLATION AND OPERATION MANUAL
FOR HOT WATER TEMPERATURE MAINTENANCE
SYSTEMS FOR THERMALLY INSULATED PIPES
THERMAL MANAGEMENT SOLUTIONS
WWW.THERMAL.PENTAIR.COM

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  • Page 1 HWAT System INSTALLATION AND OPERATION MANUAL FOR HOT WATER TEMPERATURE MAINTENANCE SYSTEMS FOR THERMALLY INSULATED PIPES THERMAL MANAGEMENT SOLUTIONS WWW.THERMAL.PENTAIR.COM...
  • Page 2 • Damaged heating cable can cause electrical arc- ing or fire. Do not use metal attachments such as pipe straps or tie wire. Use only Pentair Thermal Management approved tapes and cable ties to secure the cable to the pipe.

  • Page 3: Table Of Contents

    Table of Contents General Information 1.1 Use of the Manual 1.2 Safety Guidelines 1.3 Typical HWAT System 1.4 Electrical Codes 1.5 Approvals 1.6 Warranty 1.7 Trade Coordination 1.8 General Installation Notes 1.9 Tools Required Heating Cable Verification and Selection 2.1 Heating Cable Heating Cable Installation 3.1 Heating Cable Storage 3.2 Pre-Installation Checks...
  • Page 4 Test Procedures Troubleshooting Guide Raychem-IM-H57548-HWATsystem-EN 16/08...

  • Page 5: General Information

    Houston, TX 77036 Tel: +1.800.545.6258 Tel: +1.650.216.1526 Fax: +1.800.527.5703 Fax: +1.650.474.7711 thermal.info@pentair.com www.thermal.pentair.com Important: For the Pentair Thermal Management warranty and agency approvals to apply, the instruc- tions that are included in this manual and product packages must be followed. Raychem-IM-H57548-HWATsystem-EN 16/08...

  • Page 6: Safety Guidelines

    General Information Safety Guidelines The safety and reliability of any heat-tracing system depends on the quality of the products selected, and on proper design, installation, and maintenance. Incorrect design, handling, installation, or mainte- nance of any of the system components can cause underheating or overheating of the pipe, or dam- age to the heating cable system, and may result in system failure, electric shock, or fire.

  • Page 7: Electrical Codes

    General Information Temperature sensor Insulation Heating 180° cable Glass seal tape Heating cable Pipe temperature sensor Thermal insulation Controller label p o w Splice u t i t r i b d i s p a n Note: Partial pipe insulation shown here for clarity.

  • Page 8: Warranty

    Refer to the specific product data sheets for details. Warranty Pentair Thermal Management standard limited war- ranty applies to all products. An extension of the limited warranty period to ten (10) years from the date of installation is available...

  • Page 9: General Installation Notes

    General Information General Installation Notes Read and observe the instructions in this guide to insure that the HWAT System is installed successfully. • Accidental damage to the system can be minimized during construction by installing thermal insulation on the pipe immediately after the pipe has been traced and the heating cable has been tested.

  • Page 10: Tools Required

    General Information Tools Required For installing cable and connection kits: • Utility knife • Diagonal cutters • Cable cutters • Tape measure • Screwdriver • Heat gun or propane torch For testing the heating cable: • Megohmmeter 2500 Vdc • Multimeter (voltage, resistance and capacitance) Raychem-IM-H57548-HWATsystem-EN 16/08...

  • Page 11: Heating Cable Verification And Selection

    Heating Cable Verification and Heating Cable Verification and Selection Selection Heating Cable The HWAT System includes HWAT-R2 heating cable designed to maintain the piping at specific tempera- ture settings with the use of the HWAT-ECO or ACS- 30 controllers. Figure 2 shows the construction of the heating cable.

  • Page 12: Heating Cable Installation

    Heating Cable Installation Heating Cable Installation Heating Cable Storage • Store the heating cable in a clean, dry location. Temperature range: 0°F (–18°C) to 140°F (60°C). • Protect the heating cable from mechanical damage. Pre-Installation Checks Check materials received: • Review the heating cable design and compare the list of materials to the catalog numbers of the heating cables and connection kits received to confirm that the proper materials are on site.
  • Page 13 Heating Cable Installation • If the cable is on the wrong side of an obstacle such as a crossing pipe or I-beam, you will need to reinstall it or cut and splice it. • When installing the heating cable, the cable must not be compressed or pinched between two objects.
  • Page 14 Heating Cable Installation • The heating cable must not be embedded directly in the sealing material; the pipe should have ther- mal insulation over it (if allowed by local codes) or the heating cable should be run through the pen- etration in a tube or conduit.
  • Page 15 Heating Cable Installation • Protect all heating cable ends from moisture, con- tamination and mechanical damage. Figure 6: HWAT cable layout When paying out the heating cable, AVOID: • Sharp edges • Excessive pulling force or jerking • Kinking and crushing •...
  • Page 16 Heating Cable Installation Attaching the heating cable Starting from the end opposite the reel, tape the heating cable to the pipe every 2 feet. Work back to the reel. Leave extra heating cable at the power con- nection, at all sides of splices and tees to allow for future servicing.
  • Page 17 Figure 10. WARNING: Do not use metal attachments such as pipe straps or tie wire. Do not use vinyl-based electrical or duct tape. Use only Pentair Thermal Management approved tapes. Raychem HWAT heating cable Continuous AT-180...

  • Page 18: Heating Cable Components

    Heating Cable Components Heating Cable Components General Connection Kit Information Raychem RayClic connection kits must be used with HWAT-R2 heating cable. A complete circuit requires a power connection and an end seal. Splices and tees and other connection kits are used as needed. Use the HWAT System Design Guide (H57510) to select appropriate connection kits.
  • Page 19 Heating Cable Components TABLE 1: SERVICE LOOPS FOR EACH CONNECTION KIT Connection # of cable Cable length/ Total cable length kit name connections/kit connection (Service loop) RayClic-PC 2.0 ft (0.6 m) 2 ft (0.6 m) RayClic-S 1.0 ft (0.3 m) 2 ft (0.6 m) RayClic-T 1.0 ft (0.3 m)

  • Page 20: Control And Monitoring

    Control and Monitoring Control and Monitoring HWAT-ECO and ACS-30 Controllers The Raychem HWAT-ECO controller is designed for use only with HWAT-R2 heating cables and must be used to ensure proper water temperature. Refer to the HWAT-ECO Installation and Operation Manual (H57340) for the installation and operation instructions of the controller.

  • Page 21: Thermal Insulation

    Thermal Insulation Thermal Insulation Insulating the System Pipes must be insulated with the correct thermal insulation to maintain the desired pipe tempera- tures. For pipes 1 1/4 inches and smaller, use insu- lation that is oversized by 1/4 inch to allow room for insulating over the heating cables.
  • Page 22 Thermal Insulation sealing compound such as Dow Corning Fire Stop, 3M Fire Barrier, or T&B Flame-Safe. • Do not use staples to close the insulation. Use tape or the adhesive-lined edge of the insulation to ensure that the seam remains sealed. Staples can damage the HWAT heating cable.
  • Page 23 Thermal Insulation • Splice and Tee connection kits may be installed above the insulation using the optional SB-04 mounting bracket. The pipe and heating cable ser- vice loops must be fully insulated as shown above. Figure 16: Installing connection kits below insulation. •...

  • Page 24: Power Supply And Electrical Protection

    Power Supply and Electrical Power Supply and Electrical Protection Protection Voltage Rating Verify that the supply voltage is either 208 or 240 volts as specified by the HWAT System design. Circuit Breaker Sizing Circuit breakers must be sized using the cable lengths shown in Table 3.

  • Page 25: Ground-Fault Protection

    If arcing does occur, the fault current may be too low to trip conventional circuit breakers. Pentair Thermal Management, the U.S. National Electrical Code, and the Canadian Electrical Code require both ground-fault protection of equipment and a ground- ed metallic covering on all heating cables.
  • Page 26 Commissioning and Preventive Commissioning and Preventive Maintenance Maintenance Pentair Thermal Management requires a series of commissioning tests be performed on the HWAT System. These tests are also recommended at regu- lar intervals for preventive maintenance. Results must be recorded and maintained for the life of the system, utilizing the “Installation and Inspection...

  • Page 27: Commissioning And Preventive Maintenance

    Commissioning and Preventive Maintenance Charred or damaged cable must be replaced to avoid the risk of arcing or fire. Figure 17: Shielding the cable from the flame Circuit length verification (capacitance test) The installed circuit length is verified through a capacitance measurement of the HWAT heating cable.

  • Page 28: Preventative Maintenance

    Cable and Connection Continuity Cable and connection continuity test verifies all the electrical connections are made properly. Pentair recommends conducing this test as the cable is installed to identify any potential problems imme- diately. This test can also be conducted after the entire cable run is installed but before end seals are applied.

  • Page 29: Test Procedures

    Test Procedures Test Procedures System Tests The following tests must be done after installing the RayClic connection kits, but before the thermal insulation is applied to the pipe: 1. Visual inspection 2. Insulation resistance test After the thermal insulation has been installed on the pipe, the following tests must be performed: 1.
  • Page 30 Test Procedures • Before installing the cable • Before installing components • Before installing the thermal insulation • After installing the thermal insulation • Prior to initial start-up (commissioning) • As part of the regular system inspection • After any maintenance or repair work Procedure Insulation resistance testing (using a megohm- meter) should be conducted at three voltages;...
  • Page 31 B for any particular circuit should not vary more than 25 percent as a function of measuring voltage. Greater variances may indicate a problem with your heat-tracing system, confirm proper installation and/ or contact Pentair Thermal Management for assis- tance. Test A Test B...
  • Page 32 Test Procedures Insulation Resistance test procedure 1. De-energize the circuit. 2. Disconnect the HWAT-ECO or ACS-30 controller if installed. 3. Disconnect bus wires from terminal block. 4. Set test voltage at 0 Vdc. 5. Connect the negative (—) lead to the heating cable metallic braid or RayClic green wire.
  • Page 33 Test Procedures TABLE 4: CAPACITANCE FACTORS Heating Cable Capacitance Factor ft/nF m/nF HWAT-R2 Compare the calculated circuit length to the design drawings and circuit breaker sizing tables. Figure 19: Capacitance test 4. Power check The power output of self-regulating heating cable is temperature-sensitive and requires the following special procedure to determine its value: Important: Run hot water through the piping sys-...
  • Page 34 Test Procedures TABLE 5: RATED CURRENT (A/FT OR M) Heating Pipe Rated Current Cable Temperature (A/ft or m) HWAT-R2 140˚F (60˚C) .017 (.056) 5. Temperature test When testing an HWAT System for temperatures it is important to test in an appropriate sequence. Testing should start at the point of use closest to the water heater and progress out.

  • Page 35: Fault Location Tests

    Test Procedures Fault Location Tests There are three methods used for finding a fault within a section of heating cable: 1. Ratio method 2. Conductance method 3. Capacitance method 1. Ratio method The ratio method uses resistance measurements taken at each end of the heating cable to approxi- mate the location of a bus wire short.
  • Page 36 Test Procedures Braid Figure 22: Low resistance ground-fault test The approximate location of the fault, expressed as a percentage of the heating cable length from the front end is: Fault location: x 100 (A + B) Example: A = 1.2 ohms B = 1.8 ohms Fault location: D = 1.2 / (1.2 + 1.8) x 100...
  • Page 37 Test Procedures The approximate location of the fault, expressed as a percentage of the heating cable length from the front end, is: Fault location: 1/ A x 100 (1/A + 1/B) Example: A = 100 ohms B = 25 ohms Fault location: D = (1/100) / (1/100 + 1/25) x 100 = 20%...

  • Page 38: Cable And Connection Continuity

    Test Procedures Cable and Connection Continuity Test: To complete a continuity test it is best to start the installation with a power connection kit. A com- pleted power connection kit allows for easier testing. The bus wires and braid can be temporarily con- nected together at the power connection end (Figure 24) and resistance can be tested at the other end as each additional component is added to the system.
  • Page 39 Test Procedures 6. If a higher reading is measured on one of the tests all connections are not completed and there is not continuity for one or both of the bus wires. 7. If resistance values of braid to A and braid to B are not within 20% of each other inspect all connec- tion kits (splice, tee, and cross) between the power connection and the cable end that is being tested.
  • Page 40 Troubleshooting Guide Test Procedures Symptom Probable Causes Low water temperature Insulation is wet, or missing. HWAT-ECO controller lowered the pipe setpoint temperature because water heater is cold. Ambient too low. Improper voltage applied. Improper insulation thickness used. HWAT-ECO or ACS-30 was set incorrectly. Cold water is being introduced into the hot water system.
  • Page 41 Check the pipe temperature. Verify heater selection. Check the power output of the heating cable per the design vs. actual. Reduce pipe temperature if possible or contact your Pentair Thermal Management representative to confirm design. Replace damaged heating cable. Check the pipe temperature.
  • Page 42 Troubleshooting Guide Symptom Probable Causes Circuit breaker trips Circuit breaker is undersized. Connections and/or splices are shorting out. Physical damage to heating cable is causing a direct short. Bus wires are shorted at the end. Circuit lengths too long Nick or cut exists in heating cable or power feed wire with moisture present or moisture in connections.
  • Page 43 Troubleshooting Guide Corrective Action Recheck the design for startup temperature and current loads. Do not exceed the maximum circuit length for heating cable used. Replace the circuit breaker, if defective or improperly sized. Visually inspect the RayClic connection systems. Replace if necessary. Check for damage around the valves and any area where there may have been maintenance work.
  • Page 44 Troubleshooting Guide Troubleshooting Guide Pentair Thermal Management Industrial Heat-Tracing Installation and Inspection Record Facility: Commission Inspection date: Inspected by (Name): Panel and Circuit Breaker Number: Water heater/mixing valve temperature setting (°F) Designed circuit length (ft): Capacitance test Cap factor (Table 4):...
  • Page 45 Troubleshooting Guide Test Date:_________ (Circuit Number) megohm megohm megohm megohm Raychem-IM-H57548-HWATsystem-EN 16/08...
  • Page 46 Raychem-IM-H57548-HWATsystem-EN 16/08...
  • Page 47 Raychem-IM-H57548-HWATsystem-EN 16/08...
  • Page 48 Fax: +1.713.868.2333 cn.thermal.info@pentair.com thermal.info@pentair.com Pentair, RayClic, and HWAT are owned by Pentair or its global affili- ates. All other trademarks are the property of their respective owners. Pentair reserves the right to change specifications without prior notice. © 2004–2016 Pentair.
  • Page 49 HWAT-ECO INSTALLATION AND OPERATION MANUAL FOR HOT WATER TEMPERATURE MAINTENANCE SYSTEM ELECTRONIC CONTROLLER THERMAL MANAGEMENT SOLUTIONS WWW.THERMAL.PENTAIR.COM...
  • Page 50 Arcing may not be stopped by conventional circuit breakers. • Approvals and performance are based on the use of Pentair Thermal Management parts only. Do not substitute parts or use vinyl electrical tape.
  • Page 51 Table of Contents General Information 1.1 Use of the Manual 1.2 Features 1.3 Technical Data 1.4 Care and Maintenance 1.5 HWAT Heating Cables Installation 2.1 Installing the Controller 2.2 Wiring the Controller Programming the Controller 3.1 Programming Overview 3.2 Initializing the Controller 3.3 Advanced Programming Error/Alarms and Troubleshooting Pre-Defined Programs...
  • Page 52 Item Qty Description HWAT-ECO controller Temperature sensor with 13 ft (4 m) cable Mounting screws Mounting washers Aluminum tape Manual Figure 1: Kit contents EN-RaychemHWATECOcontroller-IM-H57340 03/13...
  • Page 53 6.5" (165 mm) 3.4" (85 mm) 2 ea - 1/2" conduit entries To water heater sensor To HWAT-ECO network/alarm entries Power supply (green LED) Power to heating cable (green LED) Heat-up cycle (green LED) - increased risk of scalding Pipe Temperature alarm (requires installed sensor) (green LED) Alarm (red LED) Escape, backspace;...
  • Page 54 EN-RaychemHWATECOcontroller-IM-H57340 03/13...

  • Page 55: General Information

    • HWAT System Product and Selection Design Guide (H57538) • HWAT System Installation and Operation Manual (H57548) Important: For the Pentair Thermal Management warranty and agency approvals to apply, the instruc- tions included in this manual and product packages must be followed.
  • Page 56 General Information • Building Management System (BMS) interface that receives a DC voltage to set the maintain temperature. • Alarm relay to signal power, temperature, or communication problems. • Pipe temperature monitoring, low temperature alarm and high temperature cut-out. • Master/slave function that allows one HWAT-ECO to control up to eight additional HWAT-ECO controllers.

  • Page 57: Technical Data

    General Information Technical Data Only for HWAT-Y2 and HWAT-R2 heating cables Maintain temperature 105˚F (40˚C) to 140˚F setpoint (60˚C) Hot water piping 60˚F (15˚C) to 80˚F (25˚C) ambient temperature Controller ambient 40˚F (5˚C) to 105˚F (40˚C) temperature ambient Switching capacity 24 A 208/240 Vac max.
  • Page 58 General Information Alarm contacts Max. 24 Vdc or 24 Vac, 1A, SPST, voltage free, NO/NC Alarm events • Loss of power • Controller reinitialized • Internal controller temperature too high • Lost date and time settings • Internal failure • Pipe temperature too high (optional) •...
  • Page 59 General Information Electromagnetic Complies to EN 5014-1 Compatibility (EMC) for emission and 60730-1 for immunity Real time clock Leap year correction Clock accuracy ±10 minutes per year Enclosure rating NEMA 12 (IP54) – indoor use only Enclosure material Mounting Wall mount with two screws or optional DIN rail Conduit entries 2 ea –...
  • Page 60 General Information Password 4-digit password protection Master/slave Master is selectable in the controller, up to 8 slaves can be connected Master/slave cable 2-wire, min. 24 AWG (0.2 mm ) twisted pair and insulation of 300 V, Max length cable is 100 m Parameters in memory All parameters are stored in nonvolatile memory,...

  • Page 61: Care And Maintenance

    Do not pour water directly on the device. Do not use a water hose or high pressure cleaner. Important: In case of questions or product failure, please contact your Pentair Thermal Management rep- resentative, or call Pentair Thermal Management at 800-545-6258. HWAT Heating Cables...
  • Page 62 WARNING: To minimize the danger of fire from sustained electrical arcing if the heating cable is damaged or improperly installed, and to comply with the requirements of approvals agencies, Pentair Thermal Management and national electrical codes, ground-fault equipment protection must be used on each heating cable branch circuit.

  • Page 63: Installation

    Installation Installing the Controller Install the controller in an indoor, dry, clean, acces- sible location. If using the optional pipe temperature sensor, make sure you install the controller within 328 ft (100 m) of where you want to monitor the pipe temperature.
  • Page 64 Installation Figure 3: Opening the controller Wall mounting the controller Mount the controller using either of the options below: 1. You can mount the controller to the wall using the two supplied screws and sealing rings in the two holes located inside the bottom part of the controller.
  • Page 65 Installation 5.9" (148 mm) 1.7" (43 mm) TEMP Figure 4: Hole locations for mounting with screws EN-RaychemHWATECOcontroller-IM-H57340 03/13...
  • Page 66 Installation 2. Optionally you can mount the controller using DIN 35 Rail mounting. Optional Din Rail Mount (Rail not provided) Mounting Removing Press tab to remove box Figure 5: Mounting with DIN 35 Rail EN-RaychemHWATECOcontroller-IM-H57340 03/13...

  • Page 67: Wiring The Controller

    Installation Wiring the Controller The diagram below shows the arrangement of the terminal blocks for power, alarm, pipe temperature sensor, BMS and network. HWAT-ECO General Arrangement Alarm terminal block Sensor, BMS, Power and network terminal block terminal block Ground TEMP Ø...
  • Page 68 Installation The diagram below shows the connection of a single controller (without optional water heater sensor, BMS, network and alarm connections). Important: Tighten the terminal screws to 6 inch- lbs. (0.68 N-m) Wiring diagram for HWAT-ECO HWAT Incoming power heating 208/240 Vac Max cable Ground...
  • Page 69 Installation For controlling multiple HWAT circuits with the same programming parameters (i.e. voltage, maintain temperature, ambient temperature, economy tem- perature), connect the heating cable output relay to an external contactor coil(s). HWAT-ECO internal relay Ground Line voltage 208 V or 240 V Install contactor manufacturer’s recommended snubber circuit across the coil...
  • Page 70 Installation of the temperature sensor to the TEMP terminal in the controller (PL4). The sensor wires do not have a special polarity. To connect a wire, use a screw- driver to push down the orange tab on the side of the terminal.
  • Page 71 Installation The pipe temperature sensor must be placed on 1-inch diameter pipes or larger, installed opposite from the HWAT heating cable to accurately measure the pipe temperature. The temperature sensor cable is 13 ft 3 in (4 m) in length, however the user can extend the cable up to 328 ft (100 m) by splicing a length of 300 volt, 18 AWG (0.75 mm ) cable.
  • Page 72 Installation Alarm wiring (optional) The alarm contact (24 Vac, 24 Vdc, 1A) inside the con- troller can be used to switch an external device. The contact is closed during operation and open during an alarm or during loss of power. In a network, all alarm contacts should be connected in series.
  • Page 73 Installation Alarms and Troubleshooting” for more information about alarm conditions. The alarm contact is designed as a fail safe mode and can be wired for normally open (NO) or normally closed (NC) operation. The following table summa- rizes the relay positions in the different controller states: Position Power Off...
  • Page 74 Installation MASTER SLAVE 1 TEMP TEMP Figure 12: Networking controllers together The diagram below shows the connection of multiple controllers (with optional RS-485 connections). EN-RaychemHWATECOcontroller-IM-H57340 03/13...
  • Page 75 Installation Master Slave 1 Slave 2 RS-485 RS-485 Alarm 208/240V 208/240V HWAT HWAT 208/240V Sensor heating heating cable cable HWAT heating cable Figure 13: Connecting multiple controllers (with RS-485) max. 20 AWG max. 24 AWG (0.5 mm (0.2 mm When multiple controllers are networked and you are using BMS and Alarm...
  • Page 76 Installation Building Management System (BMS) (optional) See Table 5 on page 39. The BMS input of the HWAT-ECO is a 0 to 10-Vdc input. If the controller is programmed to have a BMS connection, the BMS controls the temperature set- point.
  • Page 77 Installation Figure 16 shows the connection of a single controller (with optional sensor, BMS and alarm connections). Master Alarm 208/240V Sensor HWAT RayClic-PC heating cable Figure 16: Single controller connection (with sensor, BMS, and alarm connections) EN-RaychemHWATECOcontroller-IM-H57340 03/13...
  • Page 78 Installation Closing the controller Position the cover in front of the wall-mounted box. The separation sheet inside the controller will help guide the cover and the connector. Push the cover onto the box. Note that the connector pins will offer some resistance.
  • Page 79 Installation 02-11-2012 09:30 Maintain Power supply (green LED) Power to heating cable (green LED) Heat-up cycle (green LED) - increased risk of scalding Pipe temperature alarm (requires installed sensor) (green LED) Alarm (red LED) Escape, backspace; NO; or display maintain temperature setpoint Arrow keys: to change menu selection or position the cursor Confirm selection, new value or YES Figure 18: Controller display...

  • Page 80: Programming The Controller

    Programming the Controller Programming Overview Display functions Quickstart Any key to start The display has two lines with 16 characters each. The display shows the following text on start up: The HWAT-ECO has six buttons: Up/Down/Left/Right arrows Escape (ESC) button Enter button You can program the HWAT-ECO by simply executing the Quickstart program which is suitable for normal...

  • Page 81: Initializing The Controller

    Programming the Controller Initializing the Controller The first time you power up the controller, you must execute the Quickstart program to set the initial set- tings. Once initialized continue to power the control- ler for at least 6 hours to charge the internal battery. TABLE 1: QUICKSTART MENU Time and date Year...
  • Page 82 Programming the Controller TABLE 1: QUICKSTART MENU Default program Constant “Scroll to program and press Enter.” Apartments Family home Prison Hospital Nursing home Hotel Sports center Convales. home During the Quickstart you can press the ESC button to go back to a previous menu. On startup the dis- play will show the following text: Quickstart Any key to start...
  • Page 83 Programming the Controller Cable type Use the up/down arrows to select HWAT-Y2 or HWAT-R2 cable used in your installation. Press Enter. Voltage Use the up/down arrows to select 208 V or 240 V (applied voltage to the cable). Press Enter. Units Use the up/down arrows to select English or Metric units.
  • Page 84 Programming the Controller The minimum temperature is 105˚F (40˚C) or the economy temperature, whichever is higher. The maximum temperature depends on cable type, volt- age and ambient temperature. The programmed maintain temperature will display if you press the ESC button once the system is in operation. TABLE 2: MAXIMUM MAINTAIN TEMPERATURE (208-VOLT) Ambient temperature Heating cable...
  • Page 85 Programming the Controller the temperature. The minimum temperature is 105˚F (40˚C) and the maximum temperature is the selected maintain temperature. Default programs The HWAT-ECO has 9 pre-defined programs. (See “Chapter 5, Pre-Defined Programs” for more infor- mation.) Use the up/down arrows to select a pre- defined program.
  • Page 86 Programming the Controller indicate that the controller is unlocked. If you wish to lock (password protect) the controller, see section 3.3.2.6 for instructions. Displaying Maintain Temperature Setpoint After finishing the Quickstart, the display will show the date, time, temperature mode and a star to indi- cate that the controller is unlocked.

  • Page 87: Advanced Programming

    Programming the Controller 02-11-2013 09:13 Pipe T: 110°F Advanced Programming Advanced programming options are also available. Table 4 and the remainder of this section outline the advanced programming options that include modify- ing initial settings, setting additional features such as BMS and Network Master, reinitializing the entire controller, or customizing the pre-defined programs.
  • Page 88 Programming the Controller TABLE 4: ADVANCED PROGRAMMING MENU 1 Time and 1 Year Select Year Date 2 Month Select Month 3 Day Select Day 4 Hour Select Hour 5 Minutes Select Minutes 2 Setup 1 Main Temp “Enter maintain temp. setpoint” (enter pass- 2 Economy Temp “Enter economy temp.
  • Page 89 Programming the Controller TABLE 4: ADVANCED PROGRAMMING MENU 3 Timer 1 Default program Constant (enter pass- Apartments word if Lock Family home is ON) Prison Hospital Nursing home Hotel Sports Center Convalesc. home 2. Edit program Monday Edit timer for Monday Tuesday Edit timer for Tuesday Wednesday...
  • Page 90 Programming the Controller Setup When Lock is on (no star in the lower right corner) enter a password to access the setup menu. The controller locks again after 60 seconds of inactivity. When Lock is off the following menus are directly accessible.
  • Page 91 Programming the Controller installed. Use the up/down arrows to select from 60˚F (15˚C) to 80˚F (25˚C). Press Enter to confirm. If your design requires that the ambient temperature is significantly different from one location to another, you will need an HWAT-ECO controller for each ambient condition.
  • Page 92 Programming the Controller reprogramming. Once you unlock and reprogram, you will need to relock by entering your password. If Lock is On, the Setup and Timer menus are pro- tected by the password. After you enter the pass- word, the controller remains unlocked until five minutes of key inactivity or until you select Lock ‘On’...
  • Page 93 Programming the Controller TABLE 5: BMS VOLTAGE INPUT U-BMS/U-GLT Temp °F (°C) HWAT-Y2 HWAT-R2 (VOLT) >147 (>64) >6.4 147 (64) 140 (60) 131 (55) 122 (50) 113 (45) 106 (41) 7. Network Master In large installations where more than one HWAT- ECO controllers are connected to each other, you must select one controller as the Master.
  • Page 94 Programming the Controller After selecting “Master: Yes”, the slave controllers will initialize and show: :Slave: “x y” x= phase number (1 to 3) y= slave identification (A, B and C) The master controller is always 1 A, the slave con- trollers will get their number and identification auto- matically.
  • Page 95 Programming the Controller where the sensor is installed and can generate a low pipe temperature alarm. 1. Set Status: Enabled or Disabled 2. Set temperature: – Minimum: 95°F (35°C) – Maximum: < Maintain (or Economy) 3. Set Alarm filter time: 5–30 minutes 4.
  • Page 96 Programming the Controller cycle, Maintain temperature, Economy temperature, or Off. See “Chapter 6, Heat-Up Cycle Graphs” for more information. Edit pre-defined programs To edit a program, switch Lock to Off. If password protected, you will need to enter the password to unlock the controller.
  • Page 97 Programming the Controller ..04:00 – 04:30: Off 00:00 – 00:30: Heat-up cycle 04:30 – 05:00: Economy 00:30 – 01:00: Heat-up cycle 05:00 – 05:30: Economy 01:00 – 01:30: Heat-up cycle 05:30 – 06:00: Economy 01:30 – 02:00: Heat-up cycle 06:00 –...
  • Page 98 Programming the Controller required to return back to the maintain temperature after the Heat-Up cycle is complete and the heating cable is off, refer to “Chapter 7, Cool-Down Graph.” Holiday This menu is used to set the controller to Off, timed- off, or to resume your timer program.

  • Page 99: Error/Alarms And Troubleshooting

    Error/Alarms and Troubleshooting Please ensure that the unit is correctly connected to the power supply and the heating cable is connected to the HWAT-ECO unit. Error code Definitions Cause/reasons Remedy Error 1: Internal temperature Turn off power and allow the alarm;...
  • Page 100 Error code Definitions Cause/reasons Remedy Error 4: Internal Error Controller needs to be replaced. Contact Pentair Thermal Management representative Error 5: No/Low current alarm Ensure that the heating circuit is connected to power output of the HWAT-ECO. If controlling a contactor, ensure that the Short Heater Alarm is enabled.
  • Page 101 Error/Alarms and Troubleshooting Error code Definitions Cause/reasons Remedy Error 8: Time is lost Input time again (will be asked by the unit when a button is Battery is drained due pressed) to not being powered for a long time. Error 9: Pipe temperature is •...
  • Page 102 Error/Alarms and Troubleshooting Indications/Trouble shooting Cause/reasons Remedy Water temperature Too low water • Check boiler tem- too low temperature perature and timer program • Boiler temperature is too low • Mixing valves and janitor sinks may be • Cold water entering allowing cold water to system cross over to the hot...
  • Page 103 Error/Alarms and Troubleshooting Indications/Trouble shooting Cause/reasons Remedy Water tempera- Too high water • Change heater ture too high temperature type in HWAT-ECO (can only be done • Heater used is differ- in quick install ent type than entered "Setup" on page 36 in program.

  • Page 104: Pre-Defined Programs

    Pre-Defined Programs = Heat-up cycle = Maintain temperature = Economy temperature = Off Constant Heat-up Maintain Economy Monday-Sunday Apartments Heat-up Maintain Monday-Friday Economy Heat-up Maintain Saturday-Sunday Economy Family home Heat-up Maintain Monday-Sunday Economy Prison Heat-up Maintain Monday-Sunday Economy EN-RaychemHWATECOcontroller-IM-H57340 03/13...
  • Page 105 Pre-Defined Programs = Heat-up cycle = Maintain temperature = Economy temperature = Off Hospital Heat-up Maintain Monday-Sunday Economy Nursing home Heat-up Maintain Monday-Sunday Economy Hotel Heat-up Maintain Monday-Sunday Economy Sports center Heat-up Maintain Monday-Sunday Economy Convalescent home Heat-up Maintain Monday-Sunday Economy EN-RaychemHWATECOcontroller-IM-H57340 03/13...

  • Page 106: Heat-Up Cycle Graphs

    Heat-Up Cycle Graphs To calculate heat-up and cooldown times when heat cycle is used. Heat-Up HWAT-Y2 (52) (49) 208V (46) 1/2-inch pipe 1-inch pipe (43) 2-inch pipe 70°F (21°C) ambient (41) 0 Time (hours) (52) (49) 240V (46) 1/2-inch pipe 1-inch pipe (43) 2-inch pipe...
  • Page 107 Heat-Up Cycle Graphs Heat-Up HWAT-R2 (66) (60) (54) 208V 1/2-inch pipe (49) 1-inch pipe 2-inch pipe (43) 70°F (21°C) ambient (41) Time (hours) (66) (60) (54) 240V 1/2-inch pipe (49) 1-inch pipe 2-inch pipe (43) 70°F (21°C) ambient (41) Time (hours) EN-RaychemHWATECOcontroller-IM-H57340 03/13...

  • Page 108: Cool-Down Graph

    Cool-Down Graph These cool down curves represent when the heating cable is turned off. Cool-Down (66) 70°F (21°C) ambient 1/2-inch pipe (63) 1-inch pipe 2-inch pipe (60) (57) (54) (52) (49) (46) (43) (40) Time (hours) EN-RaychemHWATECOcontroller-IM-H57340 03/13...
  • Page 110 Fax: +86.21.5426.2917 Fax: +1.713.868.2333 cn.thermal.info@pentair.com thermal.info@pentair.com Pentair and HWAT are owned by Pentair or its global affiliates. All other trademarks are the property of their respective owners. Pentair reserves the right to change specifications without prior notice © 2004–2013 Pentair.

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