Thermaflow TH-750 Series Operation Manual Download Page 1

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TH-750-IMI-REV-

Since 1986

Manufacturers Of Steam Fired Specialty Equipment

ncorporated

ngineering

TH-750 SERIES

STEAM FIRED WATER HEATER

OPERATION & MAINTENANCE

MANUAL

READ THIS MANUAL COMPLETELY BEFORE ATTEMPTING START UP

P.O. Box 473639 • Charlotte, NC 28247

12249 Nations Ford Road • Pineville, North Carolina 28134

Phone 704.940.1228 • Fax 704.940.1227 • www.thermafloengineering.com

Summary of Contents for TH-750 Series

Page 1: ...Engineering r TH 750 SERIES STEAM FIRED WATER HEATER OPERATION MAINTENANCE MANUAL READ THIS MANUAL COMPLETELY BEFORE ATTEMPTING START UP P O Box 473639 Charlotte NC 28247 12249 Nations Ford Road Pinev...

Page 2: ...nic Steam Control Valve Powder Coated Base Support Stands Electronic Version Shown MADE IN USA PRODUCTS Manufacturing Facilities 12249 Nations Ford Road Pineville NC 28134 www thermafloengineering com...

Page 3: ...st before opening the hot STEAM side and always introduce steam to the unit slowly 10 For gravity return systems the TH 750 will be supplied with a factory sized Float Thermostatic steam trap Never su...

Page 4: ...lectric or self acting actuation of the steam control valve require no outside air source 19 Prior to startup all head flange bolts should be retightened as these may have loosened during shipping or...

Page 5: ...hell Never use the Pressure Temperature relief valve to remove air 7 The digital controller will sequence for a few minutes following initial power up and then return to its operation mode The control...

Page 6: ...oller will begin to increase as the steam is being introduced to the heating coil 17 After about 10 minutes of warm up slowly open fully the inlet steam isolation valve and allow the TH 750 to come up...

Page 7: ...ll utilize the Thermaflo Engineering type 25 series valve A manual corresponding with the valve type supplied is included in the documentation package that accompanies the TH 750 heater 24 The control...

Page 8: ...SCHEMATICS ON PAGES 19 26 OF THIS MANUAL Process Value Set Point Value Constant light equals process is running a flashing light equals a pause in the process Arrow keys adjust settings such as set po...

Page 9: ...water outlet line b Cold water inlet line c Condensate return line or boiler high temperature water return line 5 After the system has cooled drain the unit by opening the tank drain valve and holding...

Page 10: ...p should be verified and isolation valves have been fitted on each side of the pump for this service If the pump is not running make sure the pump ON OFF switch black in color and located on the right...

Page 11: ...ing any maintenance procedures 16 Follow Steps 1 through 7 of the shutdown procedures page 8 to take the unit offline before attempting to remove and inspect the heat exchanger coil 17 Assure that the...

Page 12: ...ighten the nuts c Number all bolts so that torque requirements can be followed d Apply torque in three steps of 60 80 then 100 of required final torque loading all bolts at each step before proceeding...

Page 13: ...gauge 28 If the unit is equipped with a circulating pump the pump relay must be interlocked with the temperature control valve so that the energy source will shut off if the pump is not operational Fa...

Page 14: ...emove the top thermometer from the shell The connection will be a and is located at the very top of the shell 4 Than using a small flexible funnel completely fill the shell with DD518 biodegradable de...

Page 15: ...13...

Page 16: ...REV 5 SEQUENCIAL ORDER 1 2 ROTATIONAL ORDER 1 3 4 5 5 6 3 7 8 7 2 6 4 8 1 2 1 3 4 5 5 6 9 7 8 3 9 10 7 11 12 11 2 6 10 4 8 12 APPENDIX A Bolt Torque Procedure 8 BOLTS SEQUENCIAL ORDER ROTATIONAL ORDE...

Page 17: ...3 13 14 15 15 16 7 17 18 19 19 20 11 2 14 6 18 10 4 16 8 20 12 APPENDIX A Bolt Torque Procedure 16 BOLTS 20 BOLTS SEQUENCIAL ORDER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SEQUENCIAL ORDER ROTATIONAL OR...

Page 18: ...domestic hot water supply it is highly recommended to install a master blend valve to prevent any chance of scalding Hookup shown with Float Thermostatic steam trap piped to gravity atmospheric conden...

Page 19: ...ty 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 3...

Page 20: ...ravity 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 tra...

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Thermaflow TH-750 Series, Operation Manual

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