INSTRUCTION MANUAL HT-50B-SM B&G Series U Heat Exchangers Removable Bundle Design Single Wall, DaimonbackTM Double Wall and Hi-Temperature Units Series SU/DSU, WU/DWU and HTWU/DHTWU Series TCS/DTCS and TCW/DTCW
STORAGE NOTE: If the heat exchanger cannot be installed and put into operation immediately upon receipt at the jobsite, certain precautions are necessary to prevent deterioration during storage. Responsibility for integrity of the heat exchangers must be assumed by the user. Bell & Gossett will not be responsible for damage, corrosion or other deterioration of heat exchanger equipment during transit and storage.
18. Set exchangers level and square so that pipe connections may be made without forcing. 12. Start operation gradually. Do not admit hot fluid to the unit suddenly when empty or cold. Do not shock unit with cold fluid when unit is hot. CAUTION: Fluids must be gradually introduced to the unit. Failure to do so can cause damage to the heat exchanger. 13. Do not operate equipment under conditions in excess of those specified on nameplate.
MAINTENANCE 11. Do not open heads until all pressure is off equipment, the unit drained of all fluids, and the equipment surfaces cooled to ambient temperature. 12. Do not blow out heat exchangers with air when operating fluids are of a flammable or otherwise hazardous nature. WARNING: Proper precautions must be taken (special clothing, equipment, etc.) to protect personnel from injury due to escaping fluids or hot heat exchanger surfaces.1 b.
19. Before reinserting the tube bundle into the shell or collar of a tank, place the ring/tank gasket over the end of the tube bundle and bring forward to the backside of the tubesheet. FRONT HEAD TUBE BUNDLE (PARTIALLY REMOVED) WARNING: It is extremely important to follow a proper tightening sequence. If it is not followed, the flanges can become cocked and a leak will result.
TYPICAL INSTALLATIONS FIGURE 1 — Typical installation of a “SU/DSU” Heat Exchanger when used as a Convertor FIGURE 2 — Typical installation of a “SU/DSU” Heat Exchanger when used as an Instantaneous Heater FIGURE 3 — Typical installation of a “SU/DSU” Heat Exchanger when used with a storage tank For proper sizing of Airtrol System consult B&G Representative FIGURE 4 — Typical installation of a “WU/DWU” Heat Exchanger when used as a Convertor 6 NOTE: All valves, pumps, tanks, vents, etc.
TYPICAL INSTALLATIONS cont. When the “WU/DWU” is installed on a hot water boiler as shown, a B&G Flo-Control Valve prevents gravity circulation of boiler water when Booster is not running. When installed on a steam boiler, note that boiler water is pumped into the “WU/DWU” Heater from the bottom of the boiler.
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