IBC INTERSTAR IWT Series Installation & Operating Manual Download Page 5

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Safety information

Danger

Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any
other appliance. If you smell gas vapors, do not try to operate any appliance - do not touch
any electrical switch or use any phone in the building. Immediately, call the gas supplier from
a phone located remotely. Follow the gas supplier’s instructions, or if the supplier is
unavailable, contact the fire department.

Warning

Improper installation, adjustment, alteration, service or maintenance can cause property
damage, personal injury, or loss of life. Read and understand the entire manual before
attempting installation, start-up, operation, or service. Installation and service must be
performed only by an experienced, skilled installer or service agency.

The water heater contains very hot water under high pressure. Do not unscrew any pipe
fittings or attempt to disconnect any components of this water heater without positively
assuring that the water is cool and has no pressure. Always wear protective clothing and
equipment when installing, starting up or servicing this water heater to prevent scalding
injuries. Do not rely on the pressure and temperature gauges to determine the temperature
and pressure of the water heater. This water heater contains components that become very
hot when the boiler is operating. Do not touch any components unless they are cool.

Failure to follow all instructions in the proper order can cause personal injury or death. Read
all instructions, including all those contained in component manufacturers’ manuals before
installing, starting up, operating, maintaining, or servicing the water heater.

Summary of Contents for INTERSTAR IWT Series

Page 1: ...0 IWT 119 CAUTION The heat transfer medium must be water or other nontoxic fluid having a toxicity rating or Class of 1 as listed in Clinical Toxicology of Commercial Products 5th edition The pressure...

Page 2: ...jury to occupants and in extreme cases to death Keep instructions near the water heater for future reference When using electrical appliances follow safety precautions to reduce the risk of fire elect...

Page 3: ...Installation checklist 15 2 2 System zone control 16 2 3 Priority or non priority for hot water 17 2 3 1 Option 1 Priority 17 2 3 2 Option 2 Non priority 17 2 4 Locating the water heater 18 2 5 Temper...

Page 4: ...5 2 Start up 27 5 3 Temperature adjustment 27 6 0 Maintenance 29 6 1 Chemical cleaning of the heating coil 29 6 1 1 Flushing the tank 29 6 1 2 Refilling the tank 30 7 0 Troubleshooting 31 8 0 Diagram...

Page 5: ...n experienced skilled installer or service agency The water heater contains very hot water under high pressure Do not unscrew any pipe fittings or attempt to disconnect any components of this water he...

Page 6: ...lass of 1 as listed in clinical Toxicology of Commercial Products latest edition Installation start up and servicing of IBC boilers and water heaters must be done with due care and attention and shoul...

Page 7: ...Liters 40 151 53 201 66 250 79 3 300 119 450 Net tank volume USG Liters 38 3 145 50 7 192 63 9 242 77 4 293 113 426 Weight empty Lbs kg 100 45 3 127 57 6 145 65 8 166 75 230 104 Shipping weight Lbs k...

Page 8: ...111 419 Weight empty Lbs kg 188 85 246 111 Shipping weight Lbs kg 201 91 290 131 Domestic conn size 1 M 1 M First hour delivery Gal Hr 719 753 Continuous Draw Gal Hr 653 653 Boiler Output Required Bt...

Page 9: ...ht inches mm 45 2 1148 57 1448 54 5 1384 B Diameter inches mm 22 559 22 559 24 5 622 M NPT Hot water outlet M NPT Cold water outlet F NPT T P relief valve 1 M NPT In from boiler boiler supply Sensor w...

Page 10: ...Hot water outlet 1 M NPT Hot water outlet 1 M NPT Hot water outlet 1 M NPT In from boiler boiler supply 1 M NPT In from boiler boiler supply 1 M NPT In from boiler boiler supply 1 M NPT In from boiler...

Page 11: ...000 166 131 204 170 140 000 166 131 204 170 160 000 166 131 204 170 Table 3 Recovery rates IWT 40 IWT 50 135 F Boiler Output BTU Hr Boiler Flow 14 gpm 160 F Boiler Flow 14 gpm 180 F 1st Hour Rating G...

Page 12: ...000 244 192 300 249 180 000 252 199 309 259 Table 5 Recovery rates IWT 65 IWT 80 135 F Boiler Output BTU Hr Boiler Flow 14 gpm 160 F Boiler Flow 14 gpm 180 F 1st Hour Rating Gal Hr Continuous rating...

Page 13: ...3 280 200 000 344 240 413 311 220 000 367 263 443 342 240 000 390 287 474 373 Table 7 Recovery rates IWT 119 IWT 80 Max 135 F Boiler Output BTU Hr Boiler Flow 25 gpm 160 F Boiler Flow 25 gpm 180 F 1st...

Page 14: ...405 299 479 373 250 000 418 311 494 389 300 000 479 373 570 467 350 000 539 435 646 544 380 000 576 473 692 591 400 000 600 498 722 622 420 000 625 523 753 653 Table 9 Recovery rates IWT 119 Max Press...

Page 15: ...art HLW 101 2 Section IV of the ASME Boiler and Pressure Vessel Code all IBC InterStor IWT series indirect water heater products are exempt from compliance with the code Check with local codes for app...

Page 16: ...For more information see Temperature and pressure relief valve on page 18 1 3 Conformity Inspect shipment carefully for signs of damage All equipment is carefully inspected and packed IBC s responsib...

Page 17: ...t a time Increase the tank size if these factors are present Carefully review the IBC water heater Specifications on page 5 and consult ASHRAE sizing guides and other reliable references Dimensions we...

Page 18: ...be sized for the minimum flow rate with all the zones in use and a maximum flow with only the water heater in use The best method for zone control is the use of circulators The three most common syste...

Page 19: ...priority for hot water 2 3 1 Option 1 Priority The demand for space heating is interrupted until the hot water demand is satisfied This option provides the maximum delivery of hot water You can easil...

Page 20: ...Surface Distance from Combustibles For Service Front 1 24 Rear Right and Left Sides 1 1 Top 1 1 Bottom 0 0 Table 12 Clearances from heater jacket 2 5 Temperature and pressure relief valve 1 Supply a...

Page 21: ...stem having a back flow preventer in the cold water supply line the installation of a thermal expansion tank is required 6 Refer to Figure 8 for suggested external components 2 7 Removing the existing...

Page 22: ...orm to all applicable codes Caution Do not operate the IBC water heaters in areas where the water pH is above 8 0 or below 6 0 and or with chloride concentrations greater than 80 parts per million ppm...

Page 23: ...onnect to cold water supply connection using the following suggested components where applicable a union a heat trap a shut off valve a drain valve an expansion tank a back flow preventer and a vacuum...

Page 24: ...uidance 2 It is recommended that minimum size 1 pipe be used on the water heater zone to ensure adequate flow larger sizes min 1 Note The piping drawings in Section 8 0 are simple guides to a successf...

Page 25: ...d 1 full port zone valves with a high CV on the water heater zone to ensure adequate flow The water heater connection labeled In from Boiler must be piped to the boiler supply piping after the air pur...

Page 26: ...nsed environment and compare with the value derived from the measurement of the resistance obtained by connecting a good quality test meter capable of measuring up to 5 000 k 5 000 000 at the controll...

Page 27: ...754 55 13 17 436 140 60 2 490 60 16 15 311 145 63 2 255 65 18 13 474 150 66 2 045 70 21 11 883 155 68 1 857 75 24 10 501 160 71 1 689 80 27 9 299 165 74 1 538 85 29 8 250 170 77 1 403 90 32 7 334 175...

Page 28: ...angle to the back of the control 2 Loosen the mounting screw and carefully insert the sensing bulb into the well until the control mounts to the well head 3 Tighten the screw to lock in place 4 Conne...

Page 29: ...to place the boiler in operation 5 3 Temperature adjustment The tank sensor controls the maximum water temperature in the water heater If it is set too high the resulting hot water can cause painful s...

Page 30: ...Turn the faucet on full and allow it to run long enough to ensure the water and piping have been heated up to the discharge temperature of the tank Using an accurate thermometer test the water tempera...

Page 31: ...s a varying amount of sediment may collect in the tank Levels requiring service are indicated by a small temperature difference between the boiler supply and return lines and a reduced recovery rate R...

Page 32: ...olution to set in the tank for 30 minutes 11 Drain the tank completely using fittings and hoses as required to reach a drain 6 1 2 Refilling the tank 1 Fill the water heater tank with fresh cold water...

Page 33: ...valve does not open Follow steps for Boiler does not operate Check for 24VAC at the zone valve while there is a call for heat if correct voltage is available and connections are good replace the zone...

Page 34: ...Tank Set Point temperature DHW temperature sensor giving false reading Sensor is not fully inserted into the well Sensor giving incorrect resistance reading Sensor connected to IBC Therm terminals ins...

Page 35: ...components may operate when other loads are running at a higher priority resulting in cold air blowing or taking heat from another load You may need to modify the wiring to separate these functions fr...

Page 36: ...Figure 6 Primary secondary piping Figure 7 Two sided parallel piping on indirect side primary secondary on heating side 34 Section Diagrams...

Page 37: ...discharge pipe field supplied always required Drain pan Potable expansion tank required where backflow check valves are installed Whole house water filter required where contaminants are present in th...

Page 38: ...aker in the position shown with no shut off valves between the device and the tank Important Note All external components shown are field supplied IBC supplies the tank including the factory installed...

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Page 40: ...77 0277 T 856 877 0544 F 604 877 0295 F 856 735 5584 Toll Free 1 844 HEAT IBC 1 844 432 8422 www ibcboiler com Information in this document is subject to change without notice IBC assumes no responsib...

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