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ThermaFlo TH-750 Series Operation & Maintenance Manual

Steam or boiler water fired startup
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READ THIS MANUAL COMPLETELY BEFORE ATTEMPTING START UP
THIS IS GENERAL INFORMATION PLEASE REVIEW FINAL DRAWING
OR CONSULT YOUR LOCAL REPRESENTATIVE OR THERMAFLO
2880 Fair Avenue• Newberry , South Carolina 29108
Phone 704.940.1228 • Fax 704.940.1227 • www.thermafloengineering.com
TH-750 Series Steam or
Boiler Water Fired Startup
Operation & Maintenance
Manual EC800II Panel Only
P. O . Box 70 • Newberry , South Carolina

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Summary of Contents for ThermaFlo TH-750 Series

  • Page 1 READ THIS MANUAL COMPLETELY BEFORE ATTEMPTING START UP THIS IS GENERAL INFORMATION PLEASE REVIEW FINAL DRAWING OR CONSULT YOUR LOCAL REPRESENTATIVE OR THERMAFLO P. O . Box 70 • Newberry , South Carolina 2880 Fair Avenue• Newberry , South Carolina 29108...
  • Page 2 TH750 CONNECTIONS AND ACCESSORIES IDENTIFICATION TH-750 Vertical Steam Fired Water Heater .-- ------- - Hot Water Outlet .---- ---- -- Outlet Thermometer 316LStainless Steel ASME Code Stamped Shell and fitting ------ Removable Vinyl Jacket Standard. ► ASME Pressure and ------- ■...
  • Page 3 Failure to install a "Y" strainer and drip trap on the steam supply line voids the warranty. 7. Be sure the steam supply is sized correctly- consult Thermaflo Engineering if you are unsure of the size. The steam supply line is NOT the same size as the control valve! 8.
  • Page 4 This also applies to boiler water above 180F. If this is not installed contact your area representative or Thermaflo immediately before startup to eliminate risk of burn or scalding.
  • Page 5 3. When the system powers up you will see the actual water temperature in the system as indicated below and the TARGET setpoint. Thermaflo has put the setpoint for Startup at 100F inital set point. DO NOT ATTEMPT TO CHANGE THIS until indicated to do so. This allows for a slow controlled warm up of the system.
  • Page 6 EC800II Electronic Temperature Controller System Figure 1: EC800II Temperature Controls, Indicators, and Connections EC800II Controller To limit or increase the valve opening % move 9 to program, then Press the far right A Button one time and that will bring up MENU, then press A and hold for 5 seconds.
  • Page 7 EC800II Digital BacNet Temperature Controller Wiring Schematic ITEM DESCRIPTION Output Status LEDs Actuatpr Output Signal, No Flow and Hogh Temp Digital Temperature Display, Actual Temp, Temp Setpoint, High Temp Setpoint Variable Function Calibration Buttons Temp Setpoint, High Temp, BacNet, PID, Valve Output ect BacNet and Internet Connections Flow Proving Connection When Used Remote Set Point Connection...

  • Page 8: Wiring Diagram

    JVV Electronic Fail Closed Control Valve Actuator INTELLIGENT MODULATING ACTUATOR USAGE INSTRUCTIONS When the EC800II Panel is powered up the top digital display of the JVV will power up. It takes WIRING DIAGRAM approx 45 seconds for the inner power pack to fully charge.
  • Page 9 Section 2- Startup Procedure and Operation HAVE YOU COMPLETED YOUR THERMAFLO CHECKLIST? 1. Verify that all manual valves are CLOSED on the heat (steam or HTHW) sources. 2. Verify that the black circulator pump on off switch on the right side of the panel is in the OFF position.

  • Page 10: Section 3 - Shutdown Procedure

    12. After 30 minutes of operation the TARGET temperature can be raised, This again is a step by step process, Switch the RUN/PROGRAM switch to program. Push the SELECT button until SETPOINT appears, SELECT then the bar graph will appaer. Using the up key STEP 1 will be to go to 105F then push the set button, and switch the RUN/PROGRAM switch to run and allow approx 5 minutes at 105F repeating the process up to a maximum setting of 120F.

  • Page 11: Section 4 - Maintenance

    Section 4 - Maintenance 1. Gasket creep is inherent to most gasketed joints, and retorquing is required. The greater the operating temperature and pressure, the greater the problem can become. It is imperative that the head bolts be torqued after installation, after initial setup, and inspected several times a year to be sure that the bolts are torqued correctly and there are no leaks.

  • Page 12: Safety Note

    TH-750. Every 2 years of operation, this bundle should be removed and cleaned so that effective heat transfer can continue to take place. Thermaflo now employees teflon baffles to eliminate baffle rubbing due to expansion/contraction.
  • Page 13 22. Examine the heat exchanger coil for scale buildup and signs of leakage. If no leakage is detected, carefully clean any excess scale from the coils and prepare the heat exchanger coil for installation. If leakage is detected between the coils and water in the tank, either repair the leaking coil(s) or replace the heat exchanger coil.
  • Page 14 29. Follow the startup procedures (page 5) to put the unit back online. Carefully check all connections for any sign of leakage. Bacnet is an Optional Purchase and must have been specified. Bacnet card can be installed in any EC800II Controller Contact Thermaflo. To connect the EC800II to BACnet  BACnet Communications Wiring interface .
  • Page 15 HIGH TEMPERATURE LOCKOUT RESET SELECT BUTTON TAKES YOU TO THIS MENU OPTION TO RESET Lockout Menu The Lockout menu is used to reset system lockouts. Reset Lockout Selections: RESET Default: N/A Available in Control Modes: TMC or ETV + TMC Menu Path: Lockout Description: The TMC Lockout outputs energize whenever the System Temperature rises above the Alarm Limit for the Trigger Delay period.
  • Page 16 Cleaning Procedure Shell and Tube Units: On an annual basis when using extremely hard water the inner bundle will need cleaning to remove lime and scale deposits. This is simply done by draining the unit and following these steps: 1. Close the outlet isolation valv e to the domestic system and turn off recirculation pump.
  • Page 17 APPENDIX A Garlock Bolt Torque Values B7 Bolts mg as ets 062" R ANSI lSO#FI anges Nominal Pipe Size Grade A Target Number of Bolts Size of Bolts (IN) (IN) Torque (FT - LBS) 2" 5/8" 2 1/2" 5/8" 3" 5/8"...
  • Page 18 1 - 2 1 - 2 11 - 12 APPENDIX A Bolt Torque Procedure SEQUENCIAL ORDER ROTATIONAL ORDER 8-BOLTS SEQUENCIAL ORDER ROTATIONAL ORDER 3 - 4 7- 8 9 - 10 12-BOLTS TH-750-IMI-REV-7 2020...
  • Page 19 1 - 2 9 - 10 11 -12 13- 14 15- 16 1 - 2 7 - 8 9 - 10 11 -12 13- 14 15- 16 17- 18 19- 20 APPENDIX A Bolt Torque Procedure SEOUE N C I A L OR D ER ROTAT I ONAL ORDER 16-BOLTS ROTAT I ONAL ORDER...
  • Page 20 2. Hookup shown with Float & Thermostatic steam trap piped to gravity atmospheric condensate return line. For pressurized condensate return systems or where a lift is required, the TH-750 must be fitted with a Thermaflo Engineering pump trap on pressure powered pump in place of the F & T Trap.
  • Page 21 2. Hookup shown with Float & Thermostatic steam trap piped to gravity atmospheric condensate return line. For pressurized condensate return systems or where a lift is required, the TH-750 must be fitted with a Thermaflo Engineering pump trap in place of the F & T trap.
  • Page 22 2. Hookup shown with Float & Thermostatic steam trap piped to gravity atmospheric condensate return line. For pressurized condensate return systems or where a lift is required, the TH-750 must be fitted with a Thermaflo Engineering pump trap in place of the F & T trap.

This manual is also suitable for:

Th-750vEc800ii

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